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kumpel [21]
2 years ago
8

What evidence supported the Davson-Danielli model for the cell membrane?

Biology
1 answer:
OLEGan [10]2 years ago
6 0

The answer is A

Electron micrograph pictures showing a blue center surrounded by 2 layers.

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1. Control of temperature, endocrine activity, metabolism, and thirst are functions associated with (1 point)
dybincka [34]
<span>1. Control of temperature, endocrine activity, metabolism, and thirst are functions associated with the hypothalamus. The correct option among all the options is the third option.

2. "Heart beating" is the one among the following that </span><span>is an example of a function that is performed exclusively by the autonomic nervous. The correct option among the options given is the second option.

3. </span>The diffusion of potassium out of a neuron causes it to experience depolarization. <span>The correct option among the options given is the second option.</span>
3 0
2 years ago
Read 2 more answers
Black mice and tan mice are native species that are observed in a particular region. Human habitation in the region caused an in
4vir4ik [10]

Answer:

A

Explanation:

The correct answer would be that <u>the availability of food resources for black mice and brown mice will decrease.</u>

<em>Since the food requirements of the black mice are the same as that of the invasive brown mice, the available food supply that used to be only for the black mice would now be shared by the two strains of mice. Hence, the available food for the two groups of mice will naturally decrease.</em>

There is no sufficient information to conclude that the population of tan mice will decrease, hence, option B is incorrect.

The black mice and tan mice have different food requirements going by the information available in the illustration, hence, both cannot compete for food resources. Option C is, therefore, incorrect. In the same vein, option D is incorrect because the tan mice have different food requirements from the brown mice.

<u>The only correct option is A.</u>

3 0
2 years ago
A cell membrane is more flexible than a brick wall. Why might many cells benefit from a flexible cell membrane? and A building h
Fofino [41]

Answer:

plant: This Elodea leaf cell exemplifies a typical plant cell. It has a nucleus, and a stiff cell wall which gives the cell its box-like shape. The numerous green chloroplasts allow the cell to make its own food (by photosynthesis).

The central vacuole takes up most of the volume of the cell. It is transparent, but you can see where it's pressing the chloroplasts up against the cell wall, especially at the ends of the cell.

Like animal cells, the cytoplasm of this plant cell is bordered by a cell membrane. The membrane is so thin and transparent that you can't see it, but it is pressed against the inside of the cell wall.

animal :This human cheek cell is a good example of a typical animal cell. It has a prominent nucleus and a flexible cell membrane which gives the cell its irregular, soft-looking shape.

Like most eukaryotic cells, this cell is very large compared to prokaryotic cells. For scale, notice the pair of dark blue bacteria cells sticking to the right edge of the cheek cell. The bacteria are only a fraction of the size of the nucleus, but their tiny size is typical for bacteria.

4 0
2 years ago
The tiles below depict translation events during roughly two cycles of elongation. each cycle adds a leucine (leu) amino acid to
sergij07 [2.7K]
I found the attached image on the internet and I believe it has the tiles referred to on the question.
As we can see on the image, the A-site, P-site, and E-site are represented. The A-site is occupied by the tRNA linked to the growing peptide chain. The P-site is the one occupied by the tRNA that works accepting the growing protein for peptide bond formation.
Firstly, the protein is formed, it is the first tile from the left.
Then, the first tile from the right is where the Leu is formed.
On the second tile from the right the Leu is then added to the protein.
The process is then repeated again as there are two cycles of elongation adding a Leu in each of them: third tile from the right, third tile from the left, second tile from the left.

7 0
2 years ago
Stem cells renew tissues but are all lost in childhood.a) trueb) false
ValentinkaMS [17]

Answer:

False

Explanation:

Stem cells are different type of cells in human body that can develop into different other body cells like muscles cells or brain cells and they gave the capability to renew themselves through mitotic cell division.

Stem cells are not lost in childhood but can be use to treat diseases or infection, it can be use to grow new cells and replace damaged body cells.

4 0
2 years ago
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