DNA methylation regulates gene expression by either luring proteins implicated in gene repression or by obstructing the DNA-binding activity of transcription factor(s). Thus, option C is correct.
A dynamic process involving both de novo DNA methylation and demethylation causes the pattern of DNA methylation in the genome to alter during development.
Every single cell in the human body undergoes billions of times of methylation, an essential biochemical process. It performs a wide range of biological processes, including detoxification. Expression of DNA.
Therefore, Methyl groups are most often added to guanine-cytosine base pairs because they are held by three hydrogen bonds, and this decreases the probability of gene expression
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The most true answer from these choices is:
Methyl groups most often added to guanine-cytosine base pairs because they are held by three hydrogen bonds, and this decreases the probability of gene expression.
Answer: The correct answer for the blank is-
Leukocytes.
Leukocytes ( also called white blood cells) are a type of blood cells that play significant role in the defense mechanism of our body (the immune system).
These cells can be of various types ( such as eosinophils, basophils, neutrophils, lymphocytes).
They assimilate/ ingest any pahtogenic agent ( foreign agent such as bacteria and virus, which cause disease) that enters body and prevent the body from getting infection.
Thus, leukocytes is the right answer.
B.) All protists are heterotrophs.
C.) All protists are unicellular.
D.) All protists are autotrophs.
Answer is A! I took the Test!
Red blood cells are disc shaped. It is thought one factor that allows them to have this shape is because they do not have a nucleus. This tends to increase amount of space inside the cell for hemoglobin.
They have a flexible disc shape which helps increase the surface- to- area volume ratio which enables oxygen and carbon dioxide to diffuse across the red blood cell's plasma membrane more readily.
Their disc shape also enables them to squeeze through tiny capillaries that are half their size .
Answer:
The correct answer is CONCAVE because they don't have a nucleus. I just took the test!
Explanation:
B. animal cell
C. cell membrane
D. DNA molecule
The study of the DNA molecule was instrumental in the formulation of the modern cell theory.
The contemporary cell theory, a key idea in biology, asserts that all living things are made up of one or more cells, that cells are the essential building blocks of life, and that all cells develop from already-existing cells. This notion was developed in large part as a result of research into the DNA molecule.
Significant insights into the mechanisms underpinning cellular operations and heredity have been gained through understanding DNA's structure, function, and involvement in genetic inheritance. The notion that cells are the basic unit of life and carry the genetic information essential for an organism's growth, development, and survival was further cemented by findings linked to DNA replication, gene expression, and mutations.
As a result, the comprehensive and widely embraced contemporary cell theory was made possible by research into the DNA molecule.
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A cell wall was instrumental. Hope I helped!
Answer:
The circulatory system stops the bleeding with platelets, which provide a seal so that healing can begin. The immune system kills off any bacteria that get into the wound and helps to eat away any debris so healing can begin. The nervous system responds to the cut with pain, telling me that an injury occurred.
Explanation:
This is the answer from Edmentum
Answer:
Platelets from the circulatory system halt the bleeding, creating a seal that allows healing to start. In order for healing to start, the immune system eliminates any germs that enter the wound and aids in the digestion of any waste. The cut causes my neurological system to produce pain, alerting me to the fact that I've been hurt.
Explanation:
paraphrased answer from edmentum