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Gre4nikov [31]
3 years ago
7

What are lymphocytes? stress hormones produced by the sympathetic nervous system. harmful agents such as chemicals and viruses t

hat cross the placenta from mother to fetus. white blood cells that are part of the body's immune system. cancer cells that form in the lymph glands?
Biology
2 answers:
kap26 [50]3 years ago
6 0
Lymphocytes are white blood cells that are part of the body's immune system
Bond [772]3 years ago
5 0

Lymphocytes are white blood cells that are part of the body's immune system.  

Lymphocytes are types of white blood cells that are part of the body's immune system. The immune system is composed of network of immune cells including lymphocytes that function together to protect the body against foreign substances, such as bacteria or cancer cells that can cause illness and diseases. Lymphocytes are produced in the bone marrow and can be found in the blood and lymph tissue. The two groups of lymphocytes are known as B lymphocytes (B cells) and T lymphocytes (T cells).


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When examining cells in the laboratory, you notice that a particular cell has half as much DNA as the surrounding cells. It appe
kow [346]

Answer:

G1 checkpoint

Explanation:

The cell cycle consists of the series of activities that occurs from the replication of DNA to the actual division of the cell in an organism's cell. However, the cell has been internally programmed to ensure that all conditions are in place/favorable before allowing progression into the next stage of the cell cycle. This internally controlled mechanism ia called CHECKPOINTS. This checkpoint occurs at three main stages of the cell cycle;

after G1 phase, G2 phase and during M phase.

In the G1 checkpoint, the cell ensures that the cell is in the right shape to proceed into the Synthesis phase of the cell cycle where it will double it's DNA. The checkpoint checks majorly for damage or change to the DNA before replicating it. If any error is found, that cell is halted and prevented from proceeding to the S-phase of the cell cycle.

This is the case in the question, the cell has been halted and prevented from entering the S-phase. Hence, its DNA is still the same as it started. However, the DNA of the cells surrounding it has been doubled as they have undergone DNA replication during S-phase.

4 0
2 years ago
I want to know more about self control and how it works in the brain, how it relates to the amygdala and the best way to improve
Semenov [28]

Answer:

In my opinion, self control is like trying to controll the urge to get whatever your heart desires.Amygdala is a part of the brain that is related to controlling emotions.

5 0
2 years ago
Identify a cell and 3 list 3 reasons why i know this to be true
motikmotik

Difference between a plant and an animal cell:

  • Plants have cell walls, animals don't
  • Plants have a large central vacuole, while animals have small scattered vacuole
  • Plants cells are rigid and strong, referred to as <u><em>Turgid </em></u> in science, and have a definite shape
  • Animal cells dont have a definite shape

Hope this helps

5 0
3 years ago
A valley is noticeably lower than the surrounding area. What is one way a valley might form?
ratelena [41]
Though erosion due to water
4 0
2 years ago
Read 2 more answers
What is the principle of common decent? Use your OWN words plz?? &lt;3
Natali5045456 [20]

Answer:

<em>The principle of common descent states that all organisms in the world exist because of a common ancestor which gave rise to all the life seen on Earth. The organisms which are more closer to one another might have a common ancestor in the near past as compared to other organisms. The organisms which share distant common ancestors have less common characteristics. This principle has led us to form the basis for the formation of evolutionary biology. </em>

3 0
3 years ago
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