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Ksenya-84 [330]
3 years ago
12

Name the structure of the brain that controls sleep.

Biology
1 answer:
Vika [28.1K]3 years ago
5 0

The answer's B. hypothalamus

mark me brainliesttt :)))

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An experiment is designed to study the mechanism of sucrose uptake by plant cells. Cells are immersed in a sucrose solution, and
wolverine [178]

Answer:

A proton Pump, using ATP, pumps protons outside

A steady proton gradient with a higher concentration of H+ out of the cell is maintained by the proton pump.

pH decreases;

The gradient becomes sufficient.

H+ moves down electrochemical gradient into the cell; Sucrose moves into the cell.

Explanation:

A proton Pump, using the energy of ATP hydrolysis, pumps protons outside the cell.

A steady proton gradient with a higher concentration of H+ out of the cell is maintained by the proton pump.

The continues outward pumping of protons by the proton pump causes the pH of the extracellular fluid to decrease

At some point the gradient becomes sufficient, and pH reaches a steady slightly acidic level.

H+ moves down its electrochemical gradient into the cell together with Sucrose through the hydrogen ion-sucrose co-transporter.

6 0
3 years ago
Chromosomes other than sex chromosomes are known as _____. autosomes alleles genes proteins
lianna [129]
The answer is autosomes.

<span>In a human diploid somatic cell (2n), there are 22 chromosomes present in two copies and 1 pair of sex chromosomes. This means there are 23 pairs of chromosomes - 22 pairs of autosomes and 1 pair of sex chromosomes. There are in total 46 chromosomes (23 pairs in 2 copies: 23 × 2 = 46).</span>

8 0
3 years ago
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At which point in mitosis does a cleavage furrow form?
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In cell biology, the cleavage furrow is the indentation of the cell's surface that begins the progression of cleavage, by which animal and some algal cells undergo cytokinesis, the final splitting of the membrane, in the process of cell division.

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According to most scientists, green algae are the ancestors of plants. Which statement best supports that belief? A) both have c
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The statement that best supports that belief is “both have cell wall made of cellulose, store food material as starch, and have chlorophyll a and chlorophyll b”.

 

The green algae are a large, informal grouping of algae consisting of the Chlorophyte and Charophyte algae, which are now placed in separate Divisions. The land plants or Embryophytes are thought to have emerged from the Charophytes.

 

The correct answer between all the choices given is the first choice or letter A. I am hoping that this answer has satisfied your query and it will be able to help you in your endeavor, and if you would like, feel free to ask another question.

8 0
2 years ago
The kidney is referred to as an excretory organ because it excretes __1__ wastes. it is also a major homeostatic organ because i
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The answers are
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3. fluid
8 0
2 years ago
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