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Paul [167]
3 years ago
9

Many cells have a nucleus that contains chromosomes. These chromosomes carry genes that are composed of _________________.

Biology
1 answer:
Jlenok [28]3 years ago
8 0

C. DNA molecules

Each chromosome is made up of DNA tightly coiled many times around proteins called histones that support its structure.

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Secretion of cholecystokinin from the intestinal wall is stimulated by
Anna11 [10]

Answer:

The correct answer is: fat in the small intestine.

Explanation:

Cholecystokinin, abbreviated to CCK, is a <u>hormone produced in the small intestine that participates in digestion</u>. Its secretion is stimulated by fatty acids in the small intestine (more specifically, in the duodenum) and by the introduction of hydrochloric acid.

Cholecystokinin has the functions to 1) <u>contract the gallbladder</u><u> so it releases the stored bile into the intestine</u>, and 2) <u>stimulate the secretion of </u><u>pancreatic juice</u><u>, which induces satiety</u>.

3 0
3 years ago
Imagine you are cutting a bagel (one of the most common household injuries) and you get a cut. The cut heals. How do the new cel
ArbitrLikvidat [17]

Answer:

The new cells are the same as the previous ones, since they are the result of the mitosis process.

Explanation:

When we cut our skin, our brain sends information to millions of cells to take action and prevent this cut from putting us in danger. At that moment, the blood cells begin their work, supplying enough oxygen to stop possible bleeding and start the healing process. Then another group of cells swap out possible bacteria that may be trying to get into the wound. Last but not least, skin cells enter cell division and undergo mitosis, to generate new cells and create a new skin layer.

New cells are the same as old cells, as they are the result of mitosis. Mitosis is the process of cell division where one cell gives rise to two cells exactly the same as it.

3 0
3 years ago
Why does the reduction of the dye DCPIP work best using the chloroplasts whose outer envelopes have been damaged during preparat
Stolb23 [73]

Answer:

NADP is the cofactors in photosynthesis which loses electrons,becomes reduced(NADPH) in photosynthesis. It transfer  electrons  in reduced form(NADPH) into the stroma of the chloroplast. The H is splits into e- and H+

These electrons for the ETC chains, generates the PMF for pumping H+ as protrons into the thylakoid  intramembranes.

Outer membrane covers  the intramembrane space, between these two membranes layers. The protons in the intramembrane space generate the electrochemical gradient for the supply of  the energy used by ATPase synthase for ATP synthesis from phosphorylation with ADP.

The chloroplast is made up of both the outer and inner membrane,separated by the intramembrane space. The walls of the intramembrane space is guided by the outer envelope. 

Therefore with the outer envelope removed, the intramembrane is exposed,more protons(H+) are released, but can not be held in the outer envelope to form electrochemical gradients,beacause the intramembrane space is now permable.

Thus   the rate of reduction of DCPIP is faster.The  color changes to colorless increases when reduced , from blue color.

Explanation:

7 0
3 years ago
How are clouds and fog related to precipitation?
Dominik [7]

Answer and Explanation:

Both clouds and fog are closely related to precipitation.

This can be explained first by the formation of clouds and fog, which begin when the air contains water vapor. This <u>water vapor is produced when there is an accumulation of moisture in the enviroment which leads to the formation of clouds. A similar process occurs with the formation of fog, which comes from saturation, that occurs after the evaporation and condensation processes that take place after precipitation (water cycle). </u>

Moreover, some types of clouds (cumulonimbus) are associated with precipitation as they could be accompanied by climatic phenomenon such as rain and snow.

7 0
2 years ago
Which term describes gross pay that is calculated based on the number of hours an employee has worked?
atroni [7]
The term for this is Hourly Wage. This can be then used for calculating gross annual salary.
6 0
3 years ago
Read 2 more answers
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