Answer:
D.They both produce new cells.
Explanation:
Meiosis and mitosis are both processes of cell division; however, they have many differences. Meiosis occurs in sex cells and produces haploids that can be fertilized. Mitosis occurs in body cells and produces diploids that replace old or damaged cells. Still, both processes result in the creation of new cells.
Answer:
D) They both produce new cells!
Explanation:
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what is the significance of t tubules?
Explanation:
The significance tubules are the site of spermatogenesis where germ cell develop into spermatozoa in close interaction with sertoli cells.Answer:
Explanation:
T-tubules are invaginations of the plasma membrane, which are present exclusively in striated muscle. Their role is to maintain the SR calcium store under the tight control of membrane depolarization via the voltage sensor channel DHPR .
Describe what is happening in each of the phases of cellular division with what you observe from the photomicrographs in the lab instructions (describe and compare both).
Answer:
Interphase - There are 3 subphases called - G1 , S and G2 . In these subphases, DNA material is duplicated, and essential proteins for cell division are formed.
Prophase - the nuclear envelop and nucleolus disappears and condensed DNA forms chromosomes that are short in size.
Metaphase - the form of two sister chromatids are arranged in the middle of the metaphase/equatorial line. Two centrioles are found at two poles of the cell which initiate the formation of spindle fibers.
Anaphase - spindle fibers are formed and can be observed. These fibres attach with the kinetochore present in the centromere of chromosomes and these chromatids now start separated by pulling and pushing force of spindle fibers in opposite poles
Telophase - chromatids reach at destination pole and then nuclear envelop starts creating again in both poles. Nucleolus reappears and now in a cell two nucleus are found.
Gene X always produces the same mRNA (one splice form) and the same protein in all cells in which it is expressed. The same amounts of gene X mRNA and protein are present in brain, kidney, and heart cells. However, the activity associated with the protein is present only in the heart. Which of the following are possible explanations?
a. A splicing factor necessary for removing all of the primary transcript's introns is present only in the heart.
b. A splicing factor necessary for removing all of the primary transcript's introns is present only in the brain and kidney.
c. Protein X is phosphorylated only in the heart.
d. Protein X is phosphorylated only in the brain and kidney.
There are two explanations for this phenomenon: phosphorylation of the protein X in the heart activates its function (Option C) or phosphorylation of the protein X in the kidney and the brain deactivates its function (Option D). Therefore, both Option C and Option D are correct.
Phosphorylation is a posttranslational protein modification that is capable of activating or deactivating protein function.
Phosphorylation alters the three-dimensional structure of a protein, thereby modifying its function (i.e., activate or deactivate the target protein).
Phosphorylation occurs at specific amino acids (e.g., serine and threonine residues) of the target protein.
Moreover, mRNA splicing (RNA processing) occurs before the protein state, it is a transcriptional process. This process consists in removing the non-coding regions or 'introns' from pre-mRNA and subsequent joining protein-coding regions or 'exons' to enable the translation of the mRNA into a protein.
In consequence, in this case, it is possible that 1-phosphorylation of the protein X in the heart activates its function, or 2-phosphorylation of the protein X in the kidney and the brain deactivates its function. Therefore, both Option C and Option D are correct.
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Select all of the meals that contain carbohydrate.
A. Bowl of chili with kidney beans
B. Meat and cheese platter
C. Bowl of ice cream with fresh blueberries on top
D. Bowl of whole wheat pasta with red sauce
E. Plate of bacon and eggs
Why do i only have one dimple on my left cheek?
Answer:
A single dimple on one cheek is a rare phenomenon. Transfer of dimples from parents to children occurs due to just one gene. The dimple creating genes are present in the sex cells prior to the process of reproduction. Each parent provides one of these genes to the child.
Describe the composition and structure of DNA. Include the parts of the DNA molecule, and how it is put together, including the types of bonds.
DNA is a double helix composed of nitrogenous bases, which form hydrogen bonds with each other. It also contains a deoxyribose sugar and phosphate backbone.
WHAT IS PHOTOSYNTHESIS?
Answer:
Photosynthesis is the process in which plants make their own food from inorganic substances like carbondioxide and water to organic substances in the presence of sunlight and chlorophyll
Explanation:
Have a nice day
A forest was cleared and turned into a field of organic soybean plants. Which of the following most likely occurred?
A. The variety of plants and animals both increased
B. The number of insects increased
C. The number of insects decreased
D. The number of plant species increased
When a forest is cleared, biodiversity decreases. The correct answer is option C: The number of insects decreased
Biodiversity refers to different species of plants and animals in a habitat. We will all agree that the biodiversity in a forest ecosystem is much higher than the biodiversity in a field of organic soybean plants.
There are less species of organisms in the field of organic soybean plants.
Therefore, the variety of plants and animals both decrease.
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diagram of a tick with labels
Answer:
I posted some pictures, I hope it helps!
what is the full form of ATP?
Answer:
ATP stands for Adenosine triphosphate, an organic molecule responsible for driving nearly all cellular mechanisms and processes in living organisms. Hence, biologists often refer to ATP as the “energy currency of the cell.”
On the basis of their use and development, Natural resources can be classified as ________ and ________
Answer:
renewable , non-renewable
Explanation: natural resources can be classified as either renewable or non-renewable depending on whether or not they replenish naturally.
What is the ratio of surface area to volume for a sphere with the following measurements. Surface area = 432m2, volume = 864m3
Answer:
the ratio of the surface area to the volume is 1:2
As part of a resource recovery project, a city decides to open reuse centers.
What kind of materials might a reuse center accept?
A. Household garbage
B. Industrial waste
C. Leftover art supplies
D. Yard trimmings
The reuse center might accept: D. Yard trimmings
What is a reuse center?
A reuse center, also known as a recycling center or a second-hand store, is a facility where various materials and items that are still in usable condition are collected, sorted, and made available for resale or redistribution. The main goal of a reuse center is to divert materials from the waste stream and promote their reuse, extending their lifespan and reducing the demand for new products.
These centers typically accept a wide range of items, such as furniture, appliances, clothing, electronics, books, toys, and more. By accepting and selling these items at affordable prices, reuse centers help reduce waste, conserve resources, and provide affordable options for individuals and communities.
A reuse center can accept yard trimmings as it include grass clippings, leaves, branches, and other organic waste from landscaping and gardening activities.
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What is a living cell?
Answer:
Though they are often debated, there are eight main characteristics that define a cell as living.
The first is genetic code. All living things contain DNA, which is like the instruction manual for life. DNA is contained in each cell, and passed from parent to offspring.
The second is growth and development. Whether by creating more cells or creating more organelles within the cell, all living things grow and develop.
The third characteristic is reproduction. Reproduction can be sexual or asexual, but in the case of single cells, it is asexual.
The fourth characteristic is response. All living things, including cells, react to external stimuli, such as temperature or salinity.
The fifth characteristic is homeostasis. Homeostasis is the condition by which living things maintain a stable internal environment in the midst of an ever-changing external environment.
The last three characteristics go hand in hand, and are sometimes combined, but in my mind they are distinctly separate.
Sixth is consumption, which is taking in food and other materials. A cell specifically takes in molecules such as water or glucose during consumption.
Seventh is metabolism, which is using materials consumed in order to create energy. Living cells use enzymes to break down materials to produce ATP (adenosine triphosphate), which is usable energy.
Finally, all living cells undergo excretion in some form. Some examples in cells include exocytosis and osmosis.
These 8 characteristics, though often controversial, determine a cell as living.
The rock shown is made of light and dark mineral crystals that are evenly
distributed
Which phrase describes the most likely environment in which this rock
formed?
A. Very low temperature and very high pressure
B. Very low temperature and pressure
C. Very high temperature and very low pressure
D. Very high temperature and pressure
Answer:
I think it’s c because the crystals look quite large and doesn’t seem squashed
Hope that helps
Explanation:
Answer:
C is the wrong answer
Explanation:
I got it wrong
click on the link below to see the primate family tree diagram. Which of the following statements is true?
Answer:
biology is amazing it contains some reproductive topics
Orangutans evolved from an ancestor they share with gorillas is true regarding primate family tree diagram. This means that orangutans and gorillas have a common ancestor. Option C is the correct answer.
Evolution is the process through which species change over time. It occurs through the accumulation of genetic variations and natural selection. The primate family tree shows the evolutionary relationships between different primate species, including orangutans and gorillas. Option C is the correct answer.
Orangutans and gorillas share a common ancestor in their evolutionary history. This means that at some point in the past, there was a species that gave rise to both orangutans and gorillas. Over time, as the common ancestor of orangutans and gorillas diverged into separate lineages, each species developed its own unique traits and characteristics. Despite their distinct characteristics, orangutans and gorillas still share certain genetic similarities due to their common ancestry. These similarities can be observed in their DNA sequences.
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The complete question is, "Which of the following statements is true regarding primate family tree diagram?
A. Orangutans evolved from lesser apes and Old World monkeys.
B. Gorillas evolved from orangutans.
C. Orangutans evolved from an ancestor they share with gorillas.
D. Gorillas are more closely related to lesser apes than to chimpanzees."
2. Calculate the rate of population increase for the whales and the seals from the data in table 2, trial 1. What does this rate represent?
Hint: From the point of zero change on the graph to the highest population achieved is a change in time of 100 months. (Refer to the science skills practice in the lesson for the correct formula for the rate of population change.)
Answer:
There are no tables but it should be a bell curve. as a population of whales rise the population of seals will decrease, eventually creating a plateau in the whale population. shortly after the plateau in the whale population the whale population will begin to decline ( as food becomes less available) causing the seal population will begin to rise and restabilize. this pattern should continue cyclically creating a wave function on a graph!
Explanation:
Match the following description with the appropriate type of respiration:
a. occurs in the mitochondria
b. resting muscles depend on this type of respiration
c. lactic acid builds up in muscle fibers
d. rapidly produces ATP for short time periods
e. produces large quantities of ATP but takes longer to synthesize
1. anaerobic respiration
2. aerobic respiration
Answer:
The correct answer is -
1. c, and d.
2. a, b, and e.
Explanation:
Anaerobic respiration is the short and quick way of producing energy, however, it produces less amount of energy than aerobic respiration and produces lactic acid as a byproduct. It takes place in the cytoplasm of the cell and working or acting muscles depend on such respiration.
Aerobic respiration is the main and important respiration process that takes place in mitochondria and it takes time to produce ATPs that are much more than anaerobic respiration. Resting muscles get energy by this type of respiration.
9. Which is the SI base unit of mass?
liter
meter
pound
kilogram
Answer:
it's D, KILOGRAM
Answer:
The answer of this question is kilogram
Explanation:
may this answer is helpful for you
When thinking about all 4 types of macromolecules discussed, which of the following statements are true? Select all that apply.
Monomers are linked together by hydrolysis.
Monomers are joined together to form functional polymers
Monomers are linked together by dehydration synthesis.
Monomers join together via hydrogen bonds.
Lowest to highest degree of internal organization stomach
Answer: Epithelial stomach cell, stomach lining tissue, stomach and then the whole digestive system.
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By the early 1980s, the population of Florida panthers had dwindled to fewer than 30. Furthermore, within this population was a high frequency of detrimental traits, including low sperm count and undescended testicles in males, and kinked tails in both sexes. The future for this iconic population was bleak at best. Provide an explanation for the observed detrimental traits. Provide a possible solution that would both increase the likelihood that the population would survive and preserve the genetic identity of this unique population.
Answer:
The population suffered a genetic bottleneck, which decreased genetic variation and thereby randomly increasing the frequency of harmful alleles
Explanation:
A population bottleneck, also known as genetic bottleneck, can be defined as a drastic reduction in the size of a population, which may be caused by anthropic activity and/or environmental phenomena (e.g., earthquakes, famines, fires, droughts, etc). A genetic bottleneck leads to a reduction in genetic variability within a population. Moreover, the genetic drifit caused by a genetic bottleneck can also increase the frequency of harmful alleles/mutations (it is due to the random sampling of individuals), thereby increasing the frequency of deleterious alleles/mutations in the population.
In April 1990, the El Paso County (Colorado) Health Department recognized an outbreak of drug-resistant gonorrhea in Colorado Springs. 56 cases of penicillin- resistant Neisseria gonorrheae occurred from December 1989 through March 1991. To gather information about the outbreak, 410 persons related through a densely connected set of social or sexual associations were interviewed. What can public health workers tell individuals in this network to stop the spread of Gonorrhea in this population?
a) Preventive treatment with penicillin will prevent Gonorrhea infection in individuals not already infected.
b) Only individuals with symptoms should seek medical screening since all cases of Gonorrhea are associated with symptoms.
c) Condoms will not prevent the spread of Gonorrhea. Gonorrhea can spread from an infected mother to a fetus.
d) Gonorrhea is more prevalent in individuals 24 years and older.
Answer:
c) Condoms will not prevent the spread of Gonorrhea. Gonorrhea can spread from an infected mother to a fetus.
Explanation:
To prevent the spread of infection, it is important that healthcare professionals inform people about ways to protect themselves against infection. In addition, it is important that health professionals inform the dangers that this infection can cause, such as symptoms and rapid transmission, which can even happen from mother to fetus. On how to protect themselves, health professionals can say that the use of condoms is the most efficient form of protection.
Before a big soccer game Charlie always eats a big dinner. Which characteristic of life does this fact best describe?
A: Living things reproduce
B: Living things respond to their environment.
C: Living things use energy
D: Living things grow and develop
Answer:
c
Explanation:
Students set up a controlled experiment. They put five
crickets in each of three identical containers. They set one
container to 15°C, one to 20°C, and one to 25°C. Then they
count the number of cricket chirps in each container
during 1 hour
What are two constants in this experiment?
A. The number of crickets in each container
B. The number of cricket chirps
O C. The kind of containers used
D. The temperature of each container
Answer:
well, what I got was wrong.
Explanation:
for me A. the kind of containers used was wrong along with c. the number of crickets together. a and c was incorrect for me. so it would probably maybe be b. the temperature of each container with d. the number of crickets in each container?
làm sao bảo quản để bánh không lên
Answer:
which language is this ?
what are perlemoen used for?
Answer:
We use them for the meat as food and the shells as decorative items
Explanation:
hope this helps
Many anti-evolutionists believe that since science doesn't have answers for all questions; scientific conclusions are not necessarily correct. This attitude reflects a failure to understand the nature of science. What is the general nature of scientific thinking? In what way is science "self correcting"?
Answer:
In science, accepted theories do not represent absolute truths. A scientific theory is accepted when there is much evidence available that support its statements, but new lines of evidence can modify original presumptions
Explanation:
A scientific theory is a plausible explanation of a particular phenomenon of the natural world, which has been many times tested and verified by using the scientific method. The accepted theories are progressively modified (or even overturned) as new lines of evidence emerge. In consequence, a scientific theory is composed of statements that we consider as truths regarding the available evidence, but we have no absolute certainty that such statements are true. The ability to self-correct is fundamental in science and it happens when we discover that the original statements of a scientific theory were wrong, thereby new lines of evidence allow us to correct the error and/or develop new scientific theories.
Explain how a scientist can determine when a particular species of dinosaur lived on Earth.
Answer:
by fossil dna
Explanation:
it is too easy for a sciencetist
Can somebody help me
Answer:
sure what's your problem.
Explanation:
Tell me.
