As formation of sperm and eggs is meiosis which is reduction division.
Mitosis is the process of cell division in which one cell gives rise to two genetically identical daughter cells, resulting in cell duplication and reproduction. The number of chromosomes is preserved in both the daughter cells.Mitosis is known as the Equational division of a cell ,the usual method of cell division, characterized typically by the resolving of the chromatin of the nucleus into a threadlike form, which condenses into chromosomes, each of which separates longitudinally into two parts, one part of each chromosome being retained in each of two new cells resulting from the original cell. In eukaryotic, sexually reproducing organisms, a process known as meiosis is used to reduce the number of chromosomes in a cell prior to reproduction. These cells are packaged into gametes by numerous species, including egg and sperm. During reproduction, the gametes may then collide and meld to form a new zygote.To know more about mitosis check the below link:
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Davion is in the clinic for a check up. At birth, you diagnosed him with Treacher-Collins Syndrome, a genetic disorder that affects the development of the bones and other tissues in the face. TCS is believed to be caused by a change in the gene on Chromosome 5, which affects facial development. About 40% of the time, one parent has Treacher Collins Syndrome. If the parents of the affected child are not affected by the syndrome, the chances of a sibling having Treacher Collins are minimal. Which organelle in the cell is responsible for Davion's inheritance of this genetic disease?
According to the research, the correct answer is ribosomes. The organelle in the cell that is responsible for Davion's inheritance of this genetic disease called Treacher-Collins Syndrome is ribosome.
What is Treacher-Collins Syndrome?It is a syndrome considered polyformative when multiple malformations are found, it has an abnormal craniofacial development pattern, and it is caused by a mutation of the chromosome that codes for the protein melasa.
In this sense, the protein melase is involved in ribosomal biogenesis, that is, it is involved in the transcription of the ribosomal DNA gene, as an important component of cell organelles called ribosomes, rRNA is essential for protein assembly.
Therefore, we can conclude that according to the research, Ribosome mutations of the protein melasa have been associated with Treacher Collins syndrome.
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FILL IN THE BLANK. a value-returning statement must have a(n) ____ statement. question 11 options: logical void return assignment
A value-returning statement must have a return statement.
what is return statement?
The function from which it was called receives the execution flow back in the return statement. There is no requirement that conditional statements be used with this sentence. The moment the statement is executed, the program's flow immediately halts and returns control to the caller. A non-void function must return a return value; a void function's return statement may or may not return anything.
Using a return statement in a function with a void return type: Now the issue of what happens if a return statement is contained within a void return type function arises. Since we are aware of this, we can conclude that a function declaration for which the return type is void will not have a return statement.
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Calcium is involved in all of the following functions except:
a. Calcium provides energy for cells.
b. Calcium deposits into bones and teeth to provide a rigid structure.
c. Calcium is necessary for blood clotting.
d. Calcium is necessary for muscle contraction and relaxation.
e. Calcium is necessary for nerve functioning.
Answer:
A. Calcium provides energy for cells
Explanation:
With the process of elimination, we can rule B, C, D, and E because they are all involved with calcium
B: Calcium is crucial for bone and teeth structure (it’s one of the main components of bone and teeth)
C: One role calcium plays in blood clotting is platelet activation
D: Calcium causes contraction by reacting with regulatory proteins in the muscle, which causes muscle contraction/relaxation
E: Calcium is necessary for nerve functioning because it contributes to providing a depolarizing signal and contributes to synaptic activity
Calcium is involved in all of the functions except Calcium provides energy for cells. So, the correct option is (A).
What is the role of Calcium in the body?Calcium is important for the structure of bones and teeth as it is one of the main components of bone and teeth. It plays a role in blood clotting is platelet activation. Calcium causes contraction by reacting with regulatory proteins in muscles, causing muscle contraction/relaxation.
It is essential for nerve functioning as it contributes to providing a depolarizing signal and contributes to synaptic activity. Calcium deficiency can affect all parts of the body resulting in weak nails, slow hair growth, and fragile, thin skin.
It plays an important role in both neurotransmitter release and muscle contraction. So, calcium deficiency can bring about seizures in people.
Thus, Calcium is involved in all of the functions except Calcium provides energy for cells. So, the correct option is (A).
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the activities of the digestive system are regulated by
The activities of the digestive system are regulated by:
hormones,parasympahetic and sympathetic neurons,the contents of digestive tract,intrinsic nerve plexus.What is the human digestive system?The human digestive system is a system used in the human body for the process of digestion. The system of human digestion consists primarily of the digestive tract or the series of structures and organs through which food and liquids pass during their processing into forms absorbable into the bloodstream. Digestive system also consists of those structures through which wastes pass in the process of elimination and other organs that contribute juices necessary for the digestive process.
The endocrine system control the digestive processes. The endocrine system also controls the release of hormones and enzymes required for digestion of food in the digestive tract.
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a woman has been trying to conceive for several years, unsuccessfully. at a fertility clinic, they discover that she has blocked fallopian tubes. using modern technologies, some of her eggs are removed, fertilized with her husband's sperm, and implanted into her uterus. the procedure is successful, but the couple discovers that their new son is color-blind and has blood type o. the woman claims that the child can't be theirs since she has blood type a and her husband has type b. also, neither parent is color-blind, although one grandparent (the woman's father) is also color-blind. in regard to the baby's color blindness, a sex-linked recessive trait, you explain that
Though the parents have blood group A and B , still their son is of blood group and colorblind aswell is possible due to codominance.
What is codominance?
In terms of genetics, codominance is a sort of inheritance in which two distinct expressions (alleles) of the same gene result in distinct features in a person.
Red blood cells with blood type A have a specific antigen (class of protein) on their membrane. Red cells in type B blood have a unique antigen on their membrane, but neither is present in type O blood.
The type O gene is "recessive" because if you only have one copy of the O gene and one copy of the A gene, you will still have A antigens on your cell membranes. You must have two O parent cells in order to belong to group O. However, group O continues to be more prevalent merely because it is the ancestor form.
The X chromosome is where color blindness is most frequently inherited as a recessive trait. In genetics, this is referred to as X-linked recessive inheritance. As a result, men tend to be affected by the illness more frequently than women (8% male, 0.5% female). Males only get one X chromosome, thus even while the recessive trait is present, there isn't another X chromosome that would provide a dominant trait of normal color vision. On the other hand, most female offspring have a propensity to develop into what are known as "carriers," which are people who have the recessive gene (color blindness) as well as the dominant gene (normal color vision), resulting in the expression of the dominant feature.
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what are male gametes called
Answer: sperm
Explanation:
Male gametes are also called sperm
What is the function of glucagon
Glucagon counteracts the actions of insulin by by increasing blood glucose levels.
What is glucagon?Glucagon is a peptide hormone, produced by alpha cells of the pancreas. It increases concentration of glucose and fatty acids in the bloodstream. It is considered to be the main catabolic hormone of the body. It is also used as a medication to treat a number of health conditions.
Insulin is also produced from the pancreas and it's function is to regulate the level of blood glucose in the blood stream. As alpha cell produces glucagon, beta cells produces insulin.
The main function of glucagon is to counter the effect of insulin by stimulating hepatic glucose production which will increase the blood glucose level.
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which compounds serve as major sources of energy for ruminant animals?
Volatile fatty acids are produced when cellulose is fermented by the rumen bacteria. The primary source of energy for ruminants is these volatile fatty acids, which are primarily propionic, butyric, and acetic acid.
Where does ruminant glucose come from?Less than 10% of the required glucose is frequently absorbed from the ruminant digestive system after dietary carbohydrates in ruminants are fermented to short-chain volatile fatty acids in the rumen (2, 6, 67). Therefore, up to 90% of the glucose that Rumi- nans require must be provided via gluconeogenesis.
What is the primary energy source and how is it created in ruminants?The rumen, reticulum, omasum, and abomasum are the four digestive chambers found in ruminants. Volatile fatty acids are produced when rumen microorganisms ferment food.
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In a plant, when the rate of respiration is less than the rate of photosynthesis, what happens to the volume of carbon dioxide that is released?.
When a plant's respiration rate is lower than its rate of photosynthesis, more carbon dioxide is discharged into the atmosphere.
The cell is releasing more oxygen than it is consuming at locations where the rate of photosynthesis exceeds the rate of the cell battery. The photic compensation point is another location where the rates of photosynthesis and cellular respiration are equal.As a result, CO2 released during cellular respiration is used during photosynthesis, while oxygen released during photosynthesis is absorbed during cellular respiration. As a result, there is no gas exchange between the plant and the environment.In a plant, when the rate of respiration is less than the rate of photosynthesis, what happens to the volume of carbon dioxide that is released discharged into the atmosphere.
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then major contribution of forensic entomology to death inestigations is
In situations forensic entomology where insects have attacked a corpse, the main benefit is to assist in determining the PMI.
For what is forensic entomology most known?The use of species identification, known growth rates, and data on insect succession to pinpoint the site and roughly establish the time of the victim's death is the main focus of entomology study and case application in forensic science.
What three things can an entomologist use forensics to determine?Forensic scientists can determine the postmortem index, any shift in the corpse's posture, and the cause of death by observing the insect population and the growing larval stages.
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the primary function of the krebs cycle is to
The Krebs cycle's primary purpose is to generate energy, which is then stored and transmitted as ATP or GTP. The cycle plays a key role in other biosynthetic processes as well.
What is the main primary function of the Krebs cycle?The production of ATP from the energy released during citric acid hydrolysis is the major purpose of the citric acid cycle in metabolism. As a means of releasing energy, anabolism creates larger molecules out of smaller ones.
Including those that create amino acids, nucleotide bases, and cholesterol, which are necessary as intermediates in the product Therefore, ion of other compounds.
Therefore, Using the Krebs cycle's carriers, the Krebs cycle's primary purpose is to move highly energetic electrons to the electron transport chain.
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why do we need to label the membrane
Which statement best compares bacteria and fungi?
A. Bacteria and fungi always cause infectious diseases.
B. Bacteria are living organisms, whereas, fungi are not.
C. Both bacteria and fungi rely on living organisms to reproduce and survive.
D. Most bacteria and fungi are harmless and may be beneficial to other living things.
Researchers performing __________ insert a weak electric current into the brain to stimulate it. a. lesioning b. esb c. eeg d. pet please select the best answer from the choices provided a b c d
Researchers performing ESB technique insert a weak electric current into the brain to stimulate it.
What does ESB contain in psychology?
Electrical stimulation of the mind (ESB) is a method which includes the creation of a susceptible electric modern into precise places withinside the mind via way of means of the use of more than one microelectrode to use brief pulses of electrical currents supposed to imitate the herbal glide of impulses via the neural pathways.
What contribution do ESBs make to our understanding of the brain?
Electrical brain stimulation (ESB) is useful in a variety of settings, including neurosurgery and experimental research. Neurosurgeons can use this procedure to help doctors determine which brain tissue needs to be removed.
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Glucose is an example of a monosaccharide.
• True
• False
Answer: True, because it cannot be broken down further by hydrolysis.
Explanation:
In an asexual life cycle, cells reproduce by meiosis. fertilization. All of the answer choices are correct. meiosis and fertilization. mitosis.
Answer:
k
Explanation:
The illustration draws an analogy between the way energy drives matter to cycle in an ecosystem and the way water causes a waterwheel to turn. Give an example of another analogy that could be used to show the relationship between energy and the cycles of matter.
The comparison between how energy drives matter to circulate in an ecosystem and how the wind drives a windmill can also be used to illustrate how energy and the cycle of matter are related. The wind powering the windmill causes its blades to spin in a circle. Energy propels matter through the ecosystem in a similar way that wind propels a windmill.
Do materials really move through ecosystems in cycles?Between soil and the air, as well as between organisms as they live and die, matter cycles. The atoms that make up the organisms in an ecosystem alternate between living and nonliving components on a regular basis.
The following sections of this concept focus on four specific biogeochemical cycles: the water, carbon, nitrogen, and phosphorus cycles.
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hippoboscidae have wings that will fall off once they reach their final host. we call these wings.
These are deciduous wings.
The principal characteristic of the fowl's wings is to provide them with the potential to fly. All birds have two wings, however, that does not mean flying.
Each of the wings includes a thin membrane supported by using a system of veins. The membrane is shaped by way of layers of integument carefully apposed, while the veins are fashioned where the 2 layers stay separate; now and again the lower cuticle is thicker and extra heavily sclerotized underneath a vein.
There are 4 preferred wing shapes that are not unusual in birds: Passive soaring, energetic hovering, elliptical wings, and high-speed wings.
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What are the two main purposes of the cell cycle
Cell division is intended to be stopped or prevented when it is not required and to be forced to occur when it is. For cells to divide and proliferate in multicellular creatures, this is crucial.
What is cell cycle?Cells go through a series of stages known as the cell cycle in order to divide and create new cells. For this reason, it is sometimes referred to as the "cell division cycle."
Two "daughter" cells are created from a single "parent" cell through the division of the "parent" cell.
One copy of the DNA, which serves as the cell's "blueprint" or "source code," and just half of the cytoplasm of the parent cell make up a daughter cell upon birth.
Therefore, Cell division is intended to be stopped or prevented when it is not required and to be forced to occur when it is. For cells to divide and proliferate in multicellular creatures, this is crucial.
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1. Which of the following situations will lead to natural selection? a. The seeds of two plants land near each other and one grows larger than the other. b. Two types of fish eat the same kind of food, and one is better able to gather food than the other. c. Male lions compete for the right to mate with females, with only one possible winner. d. all of the above
2. Which description is an example of a phenotype? a. A certain duck has a blue beak. b. A mutation occurred to a flower. c. Most cheetahs live solitary lives. d. both a and c
3. Which situation is most likely an example of convergent evolution? a. Squid and humans have eyes similar in structure. b. Worms and snakes both move without legs. c. Some bats and birds have wings that allow them to fly. d. all of the above
4. Which situation would most likely lead to allopatric speciation? a. Flood causes the formation of a new lake. b. A storm causes several large trees to fall down. c. A mutation causes a new trait to develop. d. An injury causes an organism to seek out a new food source.
5. What is the main difference between dispersal and vicariance? a. One leads to allopatric speciation, whereas the other leads to sympatric speciation. b. One involves the movement of the organism, and the other involves a change in the environment. c. One depends on a genetic mutation occurring, and the other does not. d. One involves closely related organisms, and the other involves only individuals of the same species.
6. Which variable increases the likelihood of allopatric speciation taking place more quickly? a. lower rate of mutation b. longer distance between divided groups c. increased instances of hybrid formation d. equivalent numbers of individuals in each population
7. What is the main difference between autopolyploid and allopolyploid? a. the number of chromosomes b. the functionality of the chromosomes c. the source of the extra chromosomes d. the number of mutations in the extra chromosomes
8. Which reproductive combination produces hybrids? a. when individuals of the same species in different a. geographical areas reproduce b. when any two individuals sharing the same habitat reproduce c. when members of closely related species reproduce d. when offspring of the same parents reproduce
9. Which condition is the basis for a species to be reproductively isolated from other members? a. It does not share its habitat with related species. b. It does not exist out of a single habitat. c. It does not exchange genetic information with other species. d. It does not undergo evolutionary changes for a significant period of time.
10. Which situation is not an example of a prezygotic barrier? a. Two species of turtles breed at different times of the year. b. Two species of flowers attract different pollinators. c. Two species of birds display different mating dances. d. Two species of insects produce infertile offspring.
11. Which term is used to describe the continued divergence of species based on the low fitness of hybrid offspring? a. reinforcement b. fusion c. stability d. punctuated equilibrium
12.Which components of speciation would be least likely to be a part of punctuated equilibrium? a. a division of populations b. a change in environmental conditions c. ongoing gene flow among all individuals d. a large number of mutations taking place at once
All of the above
What is natural selection?
One method of evolution is natural selection. More environment-adapted organisms are more likely to survive and pass on the genes that contributed to their success. Over time, species change and diverge as a result of this process.
As a result of natural selection, reproductive individuals pass on genetic changes that are advantageous to their progeny's survival. New creatures are created as a result, and they have a higher chance of surviving and reproducing. For instance, giraffes have an advantage over other species because of their long necks, which have evolved to allow them to eat leaves that other species cannot. Longer-necked individuals were able to reproduce and pass on their trait to the next generation because they had access to better food sources. Shorter-necked individuals would be less likely to survive and pass on their genes as a result of having less food availability.
The plant that grows larger has seeds adapted to the environment, which proliferate more readily than seeds from other plants.
One of the two fish species that consume the same food is more adapted and can thus gather more food.
Favorable male lions will be able to compete with other male lions for female mates and will be preferred over them because of their superior adaptation and physical characteristics.
Natural selection, also referred to as "survival of the fittest," is a phenomenon in which organisms that are best adapted to a particular environment are chosen while inferior organisms are weeded out.
In all three cases, biological evolution will take place as a result of selection favoring organisms that are better adapted to their surroundings and capable of competing with other species for survival.
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lactic acid was generated by the leg muscles after a bunch of hard squats and is now circulating in the blood which of the following is likely to occur as a compensation of this lactic acid buildup
The following are likely to occur as a compensation of lactic acid buildup:
Decreased urinary pHIncreased H+ in bloodIncreased hyperventilationIncreased H+ selectionWhat is lactic acid?
Red blood cells and muscle cells are the principal producers of lactic acid. When oxygen levels are low, it develops when the body metabolizes carbohydrates for energy.
In the body, lactic acid serves three basic purposes:
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Question 2 Which of these is NOT a way of classifying muscles? a. muscle location b. the type of action they
cause c. color of muscle muscle shape
Answer:C
Explanation:
simple preparation of injectable hydrogels with phase-separated structures that can encapsulate live cells
Ordinary injectable hydrogels are not phase-separated since they are made from water-soluble molecules to assure injectability, unlike natural ECMs made of phase-separated insoluble structural proteins like collagen and elastin.
For tissue engineering, in situ hydrogel systems have been employed. In order to create a hydrogel in situ for tissue engineering, patient-derived healthy cells are typically multiplied in vitro, combined with polymer solutions, and injected into a problem region. Hydrogels that can be injected into the body are regarded as potential artificial extracellular matrix (ECM) materials since they can be applied with little to no invasiveness. A hydrogel with phase-separated structures forms in situ when potassium sulfate is added in the right quantities to a gelling solution of mutually cross-linkable tetra-arm poly(ethylene glycol). These phase-separated structures allow for the encapsulation of live mouse chondrogenic cells without affecting their proliferative activity and offer an improvement in fracture toughness of up to 8 times.
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Which element is important in directly triggering contraction? a. sodium (Na') b. calcium (Ca. [tex]{ }^{++}[/tex]) cotassium ( [tex]\left.\mathrm{K}^{\wedge}\right)[/tex] d. chloride (Cl)
Answer:A
Explanation:
Auxin moves between cells through a process called polar transport. Auxin molecules move from one cell to the next through pin proteins. However, their movement is unidirectional. What accounts for this unidirectional movement?.
Cell-to-cell (from one cell to another and then to the next) carriers (a type of membrane transport protein) are what move auxin molecules between nearby cells, and the direction of the flow is governed by where the carriers are located on the plasma membrane of the relevant cells.
Transport from one cell to the one next to it is accomplished through a somewhat intricate combination of various sub-processes. The so-called chemiosmotic model was developed to describe the process underlying the distinct nature of auxin transport through living cell files of the plant. Ruberry and Sheldrake first postulated the mechanism in the 1970s, and this prophetic forecast was finally realised in the twenty-first century.
The mechanism below explains how auxin is drawn into cells by the so-called acid trap and how it can only leave them when certain carriers are active. These carriers regulate the directionality of the flow from cells and, more generally, the direction of auxin transport through the entire plant body.
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In mature animals, cell division is mainly restricted to repairing tissues by __________ old or damaged cells.
Cell division in adult animals is mostly limited to repair and replacement. A cell develops many sub-cellular structures when it differentiates in order to perform certain functions. It now functions as a specialized cell. Chromosomes composed of DNA molecules are found in a cell's nucleus.
Our telomeres are long when we are born, but as we age and our cell division more frequently, they get shorter and shorter. The chromosomes are less protected when cell division telomeres shorten, and eventually the chromosomes are exposed to damage and cell division is halted.
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which of the following tactile receptors is found in the dermal papillae? identification of tactile receptors which of the following tactile receptors is found in the dermal papillae? identification of tactile receptors tactile disc ruffini corpuscle free nerve endings tactile corpuscle
Meissner corpuscle or tactile corpuscle is the tactile receptor found in the dermal papillae.
Professor Georg Meissner and Professor Rudolf Wagner initially identified Meissner corpuscles, often referred to as Wagner-Meissner corpuscles or tactile corpuscles, as a subset of mechanoreceptors in 1852. These unique encapsulated nerve terminals transmit low-frequency vibration and fine touch sensations to the central nervous system from the dermal papillae of glabrous skin (CNS). Meissner corpuscles are crucial for somatosensory acuity, particularly in the palmar skin and digital extremities. This has clinical implications for diabetic neuropathy, peripheral neuropathy, and the aging-related deterioration of dermatological tactile sense.
Meissner corpuscles are ellipsoid mechanoreceptors that are situated 150 micrometres superficially within the dermal papillae. The corpuscles have a long axis that is perpendicular to the skin's surface and are between 20 and 40 micrometres in diameter and 80 and 150 micrometres in length. Less than three corpuscles per papilla, with one corpuscle every two to four dermal papillae. The site of genesis affects the receptors' size and density.
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In which case would facilitated diffusion be needed
A with very small non polar particles moving down the concentration gradient
Facilitated diffusion happens with a extremely tiny non-polar particles descending the concentration gradient.
The passive transport of molecules down the concentration gradient is known as facilitated diffusion. It is a selective process, meaning that only specific molecules and ions can pass through the membrane. However, it blocks the passage of other molecules across the membrane.
It help to greatly enhance the speed of transportation of molecules across the membrane.
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correctly label the following parts of the large intestine.
Answer:
ok
Explanation:
Electrical synapses involve coupling of neurons by: ________
Electrical synapses involve coupling of neurons by synaptic clefts.
What are synaptic cleft?
Synaptic cleft is a space between two neurons, connecting them to one another forming a synapse. It is bound on one side by pre-synaptic neuron and. have post-synaptic neuron on the other side. The presynaptic neuron is always an axon terminal.
Moreover, the space between two neurons across which the impulse is transmitted by a neurotransmitter is known as synaptic cleft. The neuron that transmits the signals are known as presynaptic neurons and the neurons that receive the signal are known as postsynaptic neurons.
Therefore the synaptic cleft, also known as the synaptic gap, is the space in between the axon of one neuron and the dendrites of another and is where the electrical signal is translated to a chemical signal that can be perceived by the next neuron.
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