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Akimi4 [234]
3 years ago
7

The Helper T-Lymphocyte expresses ______________ and ______________ on its surface. Select an answer and submit. For keyboard na

vigation, use the up/down arrow keys to select an answer. a CD-4; T-cell receptor b CD-8; T-cell receptor c Class II MHC; CD-4 d Class II MHC; CD-8 e Class II MHC; T cell receptorThe Helper T-Lymphocyte expresses ______________ and ______________ on its surface. Select an answer and submit. For keyboard navigation, use the up/down arrow keys to select an answer. a CD-4; T-cell receptor b CD-8; T-cell receptor c Class II MHC; CD-4 d Class II MHC; CD-8 e Class II MHC; T cell receptor
Biology
1 answer:
ehidna [41]3 years ago
7 0

Answer:

Jbih if

Explanation:

.

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Do prokaryotes have membrane bound organelles
noname [10]
No any of the organelle which is bounded by membranes.
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3 years ago
When glucose levels in the blood increase after eating a meal, the pancreas secretes insulin to lower blood glucose levels back
Vladimir79 [104]

Answer:

This hormonal control of blood glucose levels is an examples of negative feedback response.

Explanation:

The blood glucose concentration maintain their concentration through negative feedback mechanisms.Alpha and beta cell present in pancreas. Alpha and beta cell  produced insulin and glucagon which act as a antagonistic hormones and control blood glucose level.

Insulin is secreted by beta cell.Beta cell secreted insulin when glucose level increased in the blood.Insulin helps to stimulate  liver to absorb glucose.Liver convert glucose to glycogen and adipose cells convert the glucose to the fat.In response, glucose concentration decreases in the blood, and insulin secretion discontinues (through negative feedback from declining levels of glucose)

Glucagon is secreted by alpha cells. when the concentration of blood glucose level drops then alpha cells secrete glucagon into the blood.Glucagon stimulates the liver for release of glucose. When blood glucose levels return to normal then glucagon secretion stopped.Its a negative feedback response.

4 0
3 years ago
Plz help!! <br> Will be marked BRAINLIEST if right
Kisachek [45]
- Increased due to being able to eat larger seeds

- False

- True

Hope this helps!
6 0
3 years ago
Read 2 more answers
Definition: These are parents, parents of parents, etc.
valentina_108 [34]

Answer:

<u><em>Ancestors</em></u>

Explanation:

Ancestors can be described as the persons from which a particular human being originated. In a broader perspective, it is referred to family history of a person. Scientists believe that all organisms on Earth originated from a common ancestor which were the prokaryotes. The prokaryotes with time gave rise to the eukaryotes. Common descent is the phenomenon in which organisms having common ancestors are referred.

7 0
3 years ago
Example of made up negative feedback loop
FromTheMoon [43]

Answer:

negative feedback loop involving insulin and glucagon help to keep blood glucose levels within a narrow concentration range. If glucose levels get too high, the body releases insulin into the bloodstream.

hope it help

5 0
3 years ago
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