Answer:
A. Muscle and Nerve cells
Explanation:
These two kinds of cells remain in a non-dividing state. The rest of these cell types multiply/divide.
Three living species X, Y, and Z share a common ancestor T, as do extinct species U and V. A grouping that consists of species T, X, Y, and Z (but not U or V) makes up Three living species X, Y, and Z share a common ancestor T, as do extinct species U and V. A grouping that consists of species T, X, Y, and Z (but not U or V) makes up a polyphyletic group. an ingroup, with species U as the outgroup. a paraphyletic group. a monophyletic clade. a valid taxon.
Answer:
Explanation:
Creative Bioarray has developed and validated the 3T3 neutral red uptake photoxicity assay, erythrocyte hemolysis assay and a phototoxicity screening assay using 3D human epidermis model.
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The digestive and excretory systems
THE EXCRETORY SYSTEM
Answer: The attachment shows the nephron which is the functional unit of the kidney.
It does the work of urine formation through 3 distinct processes.
-Ultra filtration( Small molecules are forced out of the selectively permeable membrane of the glomerulus into the Bowman's capsule under regulated pressure.these molecules are from the blood in the glomerulus brought in by the afferent arteriole.
- Selective reabsorption ( Useful molecule and iron such as glucose and sodium are reabsorbed back into the blood as the filtrate flows through the tubule(nephron)
-Tubular Secretion. ( Movement of molecules not filtered by the glomerulus during the initial stage of filtration back into the filtrate through the renal capillaries.
Stella's urine sample shows the presence of large protein (ULTRAFILTRATION)
John's blood test report indicates a high toxin level ( ULTRAFILTRATION AND TUBULAR SECRETION)
Miguel's blood test shows an increase in metabolic waste( ULTRAFILTRATION AND TUBULAR SECRETION)
Janice's urine report shows the presence of vital materials ( SELECTIVE REABSORPTION).
You are tracking three loci in the fruit fly, locis A, B, and C, and want to know whether the loci are linked and if so what their physical distances are from one another as well as the physical order they are in. To find out this information you perform a three-point testcross with a fly that is heterozygous for all three alleles. The progeny of this cross are:
Complete question:
You are tracking three loci in the fruit fly, loci A, B, and C, and want to know whether the loci are linked and if so what their physical distances are from one another as well as the physical order they are in. To find out this information you perform a three-point testcross with a fly that is heterozygous for all three alleles. The progeny of this cross are:
a/a B/b C/c 389
A/a b/b c/c 410
a/a b/b C/c 39
A/a B/b c/c 44
a/a b/b c/c 77
A/a B/b C/c 83
a/a B/b c/c 6
A/a b/b C/c 5
Total 1053
(a) What is the recombination frequency between loci A and B?
(b) What is the recombination frequency between loci B and C?
(c) What is the recombination frequency between loci A and C?
(d) Are these loci linked?
(e) Demonstrate the physical arrangement of the genes on the chromosome, i.e. the order of the genes on a chromosome as well as their map distances.
(f) Write out the genotypes of the parents for this cross, indicating which alleles are linked with one another for each parent?
Answer and Explanation:
The Crossing-over frequency between two genes depends on the distance between them. A short distance between genes is a very little target for crossing-over to occur, which means that only a few of them will happen, compared with the number of events between genes that are more separated between each other. Two genes that are very close will have a few recombination events and are strongly bounded. While two separated genes will have more chances of recombination and are not bound.
To know if two genes are linked, we must observe the progeny distribution. In a tri-hybrid cross, If individuals, whos genes assort independently, are test crossed, they produce a progeny with equal phenotypic frequencies 1:1:1:1:1:1:1:1. If we observe a different distribution, that is that phenotypes appear in different proportions, we can assume that genes are linked in the heterozygote parent.
In the present example, the phenotypic ratio shows different proportions than the expected ones if they were not linked.
We can recognize the parental gametes in the descendants because their phenotypes are the most frequent,
a/a B/b C/c 389
A/a b/b c/c 410
while the double recombinants are the less frequent.
a/a B/b c/c 6
A/a b/b C/c 5
And simple recombinant gametes produced by the cross, which frequencies are intermediate.
a/a b/b C/c 39
A/a B/b c/c 44
a/a b/b c/c 77
A/a B/b C/c 83
Comparing the parental and the double recombinant we will realize that they only change in the position of the alleles C/c. This suggests that the position of the gene C is in the middle of the other two genes, A and B, because in a double recombinant only the central gene changes position in the chromatid.
A------C------B
Now we will call Region I to the area between A and C and Region II to the area between C and B.
Once established the order of the genes we can calculate distances between them, and we will do it from the central gene to the genes on each side. First We will calculate the recombination frequencies, and we will do it by region. We will call P1 to the recombination frequency between A and C genes, and P2 to the recombination frequency between C and B.
P1 = (R + DR) / N
P2 = (R + DR)/ N
Where: R is the number of recombinants in each region, DR is the number of double recombinants in each region, and N is the total number of individuals. To calculate the recombination frequency, we have to know that 1% of recombinations = 1 map unit = 1cm. And that the maximum recombination frequency is always 50%.
So:
P1 = (R + DR) / N = 5 + 6 + 77 + 44 + 39 / 1053 = 171/1053 = 0.162 P2 = (R + DR)/ N = 6 + 5 + 83 / 1053 = 94/1053 = 0.089Now, to calculate the recombination frequency between the two extreme genes, A and B, we can just perform addition or a sum:
P1 + P2= Pt
0.162 + 0.089 = Pt
0.251 = Pt
The genetic distance will result from multiplying that frequency by 100 and expressing it in map units (MU). One centiMorgan (cM) equals one map unit (MU). The map unit is the distance between the pair of genes for which one of every 100 meiotic products results in a recombinant product.
P1 = 0.162 x 100 = 16.2%P2 = 0.089 x 100 = 8.9%Pt = 0.251 x 100 = 25.1 %(a) What is the recombination frequency between loci A and B? 0.251
(b) What is the recombination frequency between loci B and C? 0.089
(c) What is the recombination frequency between loci A and C? 0.162
(d) Are these loci linked? Yes. Their recombination frequency is inferior to 50% and the phenotypic rate is different from 1:1:1:1:1:1:1:1
(e) Demonstrate the physical arrangement of the genes on the chromosome, i.e. the order of the genes on a chromosome as well as their map distances.
A-------------------C-----------------B
A--- 16.2 UM --C ---8.9 UM--B
A-------------25.1 UM--------------B
(f) Write out the genotypes of the parents for this cross, indicating which alleles are linked with one another for each parent?
a/a C/c B/b x A/a c/c b/b
Indicate which of the following statements is TRUE. Group of answer choices Covalent bonds connect nucleotides in a strand; noncovalent interactions hold strands into a double-stranded structure. Uracil is similar to thymine except that uracil lacks a methyl group on the carbon at position 5 on the carbon-nitrogen ring. Frederick Griffith demonstrated that a transforming chemical from dead bacteria could change the genetic information of living bacteria. The pyrimidine bases in nucleic acids are cytosine, thymine, and uracil. All of the above statements are true.
Answer:
The answer is "All of the above statements are true".
Explanation:
In the given-question all choices were true, which can be defined as follows:
The covalent bonds are linked to a range of nucleic acids. Non-covalent encounters involve a dual washed ashore system. The Uracil is just the same as pyrimidines, except that at position 5 throughout the carbohydrate ring it lacks in the methyl group in carbon. Frederick-Griffith proved a possible change throughout the genetic material of bacterial cells with both the morphing chemical from dead bacterial cells. Cytosine, thymine, and uracil are pyrimidine fundamentals in nucleic acids.Cells that secrete a lot of substances via active transport need a lot of ___in their cytoplasm.
А)endoplasmic reticulum
B)mitochondria
С)golgi apparatus
D)lysosomes
E)chromosomes
Answer:
The correct answer is
Explanation:
Lysosomes are used in transportation of cytoplasm.
Hope this helps....
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1. The Hawaiian Islands are examples of islands that formed over a hotspot. Based on this information, which of the following processes formed the Hawaiian Islands? (2 points) Melted rock called magma rose through holes in Earth's crust and gradually solidified as it cooled. Tectonic movement forced certain segments of Earth's crust downward and other segments upward in jagged chunks. One tectonic plate moved beneath another plate at a subduction zone, causing the rock to melt and rise above Earth's surface. Segments of Earth's crust bent and doubled over, and moving wind and water gradually shaped the rock into gently sloping domes.
Answer:
The correct answer is - Melted rock called magma rose through holes in Earth's crust and gradually solidified as it cooled.
Explanation:
The Hawaiian Islands are the chain of eight major islands situated in U.S. of Hawaii. These are formed over a hot spot. About 75 million years ago such hotspot took place in the center of the Pacific Plate.
There are hot spot due to the volconic activity and in the moving over the tectonic plate of a subduction zone. Volcanic activity and overriding of plates that cause rising magma by melting the moving down plates whice leads to volcanic arcs formation. The magma that rose gradually cooled down and become solid over the time. It is an example of a large seamount and island chain created by hot-spot volcanism.
Thus, The correct answer is - Melted rock called magma rose through holes in Earth's crust and gradually solidified as it cooled.
The poles experience 6 months of daylight and 6 month of darnos . The sun is never higher than 23.5 degrees above the horizon . Use one or both of these ideas as evidence to explain why the season are most extreme at the poles
Answer:
North and South pole are cold as they do not receive direct sunlight. South pole is much colder than North pole. The Sun is always low on the horizon, even during summer and winters.
The Sun only comes up for a few months, that is why both nights and days are dark and cold.
The average mean temperature in summers at North pole is 32 degrees Fahrenheit and in winters its minus 40 degrees. While at south pole it is minus 18 degrees Fahrenheit and in winters it is minus 76 degrees Fahrenheit.
how do i explain assimilation of glucose?
Explanation:
Is the movement of digested food molecules into the cells of the body where they are used
Example:glucose is used respiration to provide energy
Answer:
Assimilation is that process distribute to cells during absorbs and nutrients or digestion your body is known as assimilation.
Explanation:
Assimilation nutrients gets the food to your cells they used growth and repair,assimilation of nutrients in the small intestine.
Assimilation is that process important cell take nutrient from the pump and intestine into your body and his distributed in your body.
The other side intestine cell another pump that glucose into the blood and surround the intestine, glucose in the blood can its a serious problems, blood flows to the liver deliver into the glucose storage.
Glucose is delivered to all the cell in your body,liver cell can store glucose as glycogen,in your body cell use glucose to make cellular energy in body.
Glucose can contain reach small intestine down into individual sugars,like glucose,take sugar from the intestinal cells.
Assimilation is the process of vitamins, minerals and chemical food,
assimilation is the chemical alteration of substance in the liver or cellular secretions.
land environments are different than water environments
true
false
Answer:
true
Explanation:
because land environment is different from water environment .
Hope it help you
Answer:
True
Explanation:
Bile juice dose not contain any digestive enzymes yet it is essential for digestion why so ?explain
Explanation:
Although bile juice does not contain any enzymes, it contains bilirubin and biliverdin. These help to break big fat globules into small globules which is taken to pancreatic juices to be further digested. This is known as emulsification of fat. It also helps in secretion of lipase. Thus it plays an important role because majority of the fat digestion process is carried out by it.
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The table below shows the number of chromosome pairs for various
organisms.
Organism
Number of
Chromosome Pairs
16
Badger
Carp
Dog
52
39
Cat
19
Which organism can produce the highest number of genetically different
gametes?
A. Dog
B. Badger
C. Carp
D. Cat
Answer:
CArp
Explanation:
The correct option is C. Carp
What is the number of cells produced in mitosis?
Mitosis is a process of nuclear division in eukaryotic cells that occurs when a parent cell divides to produce two identical daughter cells.
Is carp a fish?Carp is a large freshwater fish native to central Asia. Introductions in many countries have helped to make carp the most widely distributed freshwater fish in the world. They are extensively farmed in Europe, Asia, and the Middle East, and are a popular angling fish in Europe.
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2) Micah and Taylor investigate the effect of tap water and spring water on the growth of plants.
They grew two plants of the same type and size in separate containers. Every three days, they
added the same amount of tap water to one plant and the same amount of spring water to the
other. Describe an action that would best improve the reliability of their results?
Answer:
To improve the reliability of the results, the nutritional component of each category of water must be tested and recorded.
Second, the experiment should be carried out under greenhouse conditions.
The above actions will afford more control. When an experiment is controlled, it means that except for the dependent variable, all other variables are kept constant by the scientist.
By performing the experiment under greenhouse conditions, the kind of water the plants receive, temperature and other biotic actors are kept within measurable limits thus increasing the reliability of the results.
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What kind of membrane do chloroplasts have?
The scientist has chosen to study the motion of clouds in the atmosphere during a thunderstorm which type of model is most appropriate for her investigation
Answer: COMPUTER SIMULATION
Explanation: Computer simulation is a model that helps to scientists to have a clear and better understanding and be able to effectively predict the occurrence of future outcomes of real physical situations.
Computer simulation makes use of mathematical models to effectively analyse and predict future occurrences which helps the world to be better prepared and able to effectively manage physical and real world situations.
what are the methods used in biodegrable waste managment? plz amswer i will give brainliest if u answer im using my last points
Answer:
The different types of waste are urban, industrial, agricultural, biomedical, and radioactive wastes.
Methods used within biodegradable waste management are composting, landfilling, incineration, recycling and plasma gasification.
Explanation:
Answer:
Composting. Since biodegradable or organic wastes like vegetable peels, waste food, leaves, dead flowers, and egg shells can be recycled, they are converted into manure by burying them in compost pits.
Explanation:
What is the central idea of Food Safety Myths Exposed?
Do you agree or disagree, why or why not, give examples. The knowledge produced by science builds on old ideas and is constantly changing.
Answer:
agree
Explanation:
people are never going to stop learning
things will evolve
what has been discovered in the past is still relevant
The knowledge produced by science builds on old ideas and is constantly changing agree.
What is Science?Science is a methodical process that creates and arranges knowledge in the form of universe-related explanations and predictions that can be put to the test.
Some of the earliest archeological evidence for scientific reasoning is tens of thousands of years old, and science may be as old as the human species.
In the period between 3000 and 1200 BCE, Mesopotamia and Ancient Egypt produced the oldest written documents in the history of science. Greek natural philosophy of classical antiquity, where formal attempts.
Therefore, The knowledge produced by science builds on old ideas and is constantly changing agree.
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Experience with dog breeding has taught geneticists ________. A) that, given enough time, any desired trait can be bred into dogs B) that purebred dogs have offspring with qualities identical to the parents, because all purebred dogs are alike genetically C) that, while physical traits can be molded through artificial selection, behavioral traits cannot D) that geographically isolated groups of dogs may be selected for quite different traits, resulting in a different dog breed
Answer:
D) that geographically isolated groups of dogs may be selected for quite different traits, resulting in a different dog breed
Explanation:
Artificial selection is a type of selective breeding made by humans in which offspring with desired traits are selected. Modern dogs evolved by artificial selection. Dog breeding began around 30,000 years ago from selective breeding of wolves that were separated from their original population and bred to produce dogs with desired traits (especially, loss of aggressive behavior). Purebred are reproductively isolated groups of dogs originated from the same lineage (i.e., the same common ancestor for each group), that never mated with another dog breed.
Here is a easy question summary the Interphase, prophase metaphase, anaphase and telophase step by step for each of the phase
Answer:
Interphase:
The DNA is present as uncondensed chromatin, which is not visible under a microscope. The DNA is contained within a clearly defined nucleus . Centrosomes and other organelles have been duplicated , and the cell is enlarged in preparation for division .
Prophase:
The DNA supercoils and chromosomes condense, becoming visible under a microscope). The chromosomes are comprised of genetically identical sister chromatids, which are joined at a centromere). Paired centrosomes then move to the opposite poles of the cell and form microtubule spindle fibers , the nuclear membrane breaks down, and the nucleus dissolves .
Metaphase:
The microtubule spindle fibers from both centrosomes connect to the centromere of each chromosome , microtubule depolymerisation causes spindle fibers to shorten in length and contract , causing chromosomes to align along the center of the cell.
Anaphase:
The continued contraction of the spindle fibers cause genetically identical sister chromatids to separate . Once the chromatids separate, they are individual chromosomes. The genetically identical chromosomes move to the opposite poles of the cell .
Telophase:
Once the two chromosome sets arrive at the poles, spindle fibers dissolve and chromosomes decondense, becoming invisible under light microscopes. Nuclear membranes reform around each chromosome set , and cytokinesis occurs concurrently, splitting the cell into two separate cells.
I - O selecionador pede para que a pessoa descreva como se comportaria em determinada situação ou trabalhe em cima de um case. PORQUE II - É importante identificar com essa prova como o candidato se comportaria diante de uma situação real e específica do dia a dia no trabalho.
Answer:
O seletor quer saber a ação da pessoa.
Explicação:
O seletor pede que a pessoa descreva como ela se comportaria em uma determinada situação ou trabalharia em um caso, porque o seletor quer saber sobre o comportamento e a inteligência da pessoa para lidar com a situação. o selecionador também quer treiná-lo porque essas situações vão vir na vida profissional dele então ele tem a informação e a experiência de como lidar com isso.
When did coronavirus started and where wil mark brainliest
Explanation:
Wuhan chine in November
hope this helps
Consider this animal cell. The organelles in an animal cell are labeled. Part E represents small dots on the nucleolus. What is the function of the small, dark organelles labeled E? They contain enzymes for the digestion of old cell parts. They regulate what enters and leaves the cell. They produce proteins for the cell. They store water and other materials.
The dark organelles labelled E is called the Ribosomes.
Answer:
C
Explanation:
Edge 2020
Classify the events according to the gas they primarily contribute to the atmosphere.
#1 goes to methane, #2 goes to oxygen,#3 goes to carbon dioxide,#4 goes to carbon dioxide. make sure you double check.
Explanation:
A plant can produce oxygen sufficient for the consumption of four people whereas carbon dioxide absorbed by the plant is more than forty-eight pounds. The total release of carbon dioxide by livestock is 15 % of the greenhouse gas production whereas methane production is 155-264 pounds. When a forest fire happens it releases a massive amount of carbon dioxide which is around 1.8 million tons.
What are greenhouse gases?Greenhouse gases are gases such as methane, carbon dioxide, CFCs, and HFCs. They have impacted the atmosphere negatively. The concentration of these gases is highly rising in the atmosphere at an alarming rate. These gases trap the heat of the sun and do not leak out.
Therefore, the emission of greenhouse gases should be monitored.
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Use this list of technical steps for the following question: 1. Two cells were fused using a small electrical current. 2. An embryo was implanted into a "surrogate mother". 3. All nuclear DNA was removed from a sperm. 4. A cell was taken from an adult sheep. 5. All nuclear DNA was removed from an egg. What is the order of events in producing a cloned animal
Answer:
The correct order of events would be - 4, 5, 1 and 2.
Explanation:
In the process of producing the cloned there are various steps are involved. Carrying out these steps in order is essential to produce the cloned animal. These steps are in correct order are given as follows-
4. A cell was taken from an adult sheep or the animal that is desired to be cloned.
5. All nuclear DNA was removed from an egg of the sheep.
1. two distinct cells of the animal were fused together with the help of electrical current.
2. the embryo formed by fusing the cells now implanted into a surrogate mother.
how bone tissue and muscle tissue interact
Answer:
The bone tissue and muscle tissues interact for the system is more complex than components system is separately.
Explanation: Bone tissue and muscle tissue responsible for communication between bone and muscle is to research potential especially bone and muscle.
That they are bone and muscle are concept that bone and communicate biochemical and complementary and work bone and muscle in health and disease.
The bone and muscle in the viewed as that mechanical nature, bone simply the attachment sites, this is much more complex bone and muscle.
Development to the bone and muscle cells only a common experience a tightly networks of genes.
The muscle and bone regarding review article major goal of loading, bone and muscle relation mechanical coupling, and is also earliest muscle factors, bones are not through of as the pituitary adrenals, bone endocrine organ .
I WILL GIFT BRAINLIEST FOR THE RIGHT ANSWER!! In the following reaction, if you wanted to produce more chlorine gas (Cl2), what should you do? (2 points) 4HCl + O2 ⇄ 2H2O + Cl2
Answer:
B. the rate of forward reaction increases .
what is the balanced equation for photosynthesis.
An organism that reproduces asexually will have
Answer:
An offspring identical to itself.
Explanation:
The difference between asexually reproduction and sexually reproduction is that when you asexually reproduce, you are simply duplicating yourself. There are many ways you can asexually reproduce, like after a certian growth time, you would just simply split yourself. A part of you can just come off too. The last one is franmentation. It is when you take a big part of you off, and then if it was big enough, it would grow. (Occurs in Starfish). But when you sexually reproduce, two haploids would come together, creating a diploid which would duplicate. And asexually reproduction, you would already start with a full set of genes. (Which is identical to your mother's)
Describe the characteristics of scientific inquiry.
Answer:
Learner Engages in Scientifically Oriented Questions.
Learner Gives Priority to Evidence in Responding to Questions.
Learner Formulates Explanations from Evidence.
Learner Connects Explanations to Scientific Knowledge.
Learner Communicates and Justifies Explanations.
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how does root pressure move water
Answer:
Root pressure is caused by the accumulation of water in the xylem pushing on the rigid cells
