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solmaris [256]
3 years ago
12

"bacteria first appear in the fossil record about 3.5 billion years ago. humans appeared in the fossil record only a few million

years ago. given this, which group would you say is more highly evolved?"
Biology
1 answer:
Viktor [21]3 years ago
4 0
Humans are more highly evolved as the human taxonomic group has undergone more evolutionary changes. If we consider that the first organisms were similar to bacteria, it would mean that existing bacteria have changed very little since life first began. The human lineage however has seen dramatic changes in life form from bacteria to multicellular organisms and so on to progressively more complex forms.
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Consider the following geometric solids a sphere with a ratio of surface area to volume equal to 0.08 M negative one a right cir
azamat

Options:

A. The rate of diffusion would be the same for the two models.

B. The rate of diffusion would be faster for the right cylinder.

C. The rate of diffusion would be slower for the right cylinder.

D. The rate of diffusion would be faster for the sphere.

Answers:

The rate of diffusion would be faster for the right cylinder. Thus, the correct option is B.

To begin with, we must comprehend how the ratio of surface area to volume affects the rate of diffusion.

When comparing the ratio of surface area to volume, a body with a larger surface area will have a higher rate of diffusion than a body with a smaller surface area. It can be expressed mathematically as:

V∝ R    (whereas v is the diffusion rate and r is the surface area to volume ratio)

The answer to the question's surface area to volume ratio for spheres is given 0.8m⁻1

For a right circular cylinder, the surface area to volume ratio is provided  is 2.1 M.

The right circular cylinder has a larger ratio, hence it is obvious that the right circular cylinder will have a higher rate of diffusion because the rate of diffusion is directly related to the surface area to volume ratio.

For more information regarding volume, visit:

brainly.com/question/463363

#SPJ1

4 0
1 year ago
Valcanoes are_____found where two places meet.<br><br> A.never<br> B.rarely<br> C.often<br> D.always
andrew11 [14]
C. often because t<span>here are three major types of </span>plate<span> boundaries. If </span>two<span> tectonic </span>plates<span> collide, they form a convergent </span>plate<span> boundary. Usually, one of the converging </span>plates<span> will move beneath the other, which is known as subduction. Deep trenches are often formed where tectonic </span>plates<span> are being subducted and earthquakes are common</span>
8 0
3 years ago
In small populations gene frequencies can change drastically by chance alone this is called
romanna [79]
When a small populations' gene frequencies are changed drastically by chance alone it is called a genetic drift

7 0
3 years ago
If a cell in metaphase of mitosis is fused with a cell in the G$$_1$$ phase of the cell cycle, the second nucleus will also begi
nalin [4]

Answer:

C. Molecules such as cyclins are in high concentration in the cytoplasm of a dividing cell and will signal the fused cells nucleus to undergo mitosis

Explanation:

Various stages of the cell cycle are under tight regulation. Specific proteins such as cyclins and cyclin-dependent protein kinases determine if the cell would progress from one stage of the cell cycle to the next. When a cell is in the metaphase, the cyclins specific for mitosis are present in a higher amount in the cell. These cyclins bind to the specific CDKs and activate them.

The activated CDKs then phosphorylate proteins that make the cell to move through various stages of mitosis. Therefore, fusing a G1 cell with a cell in metaphase of mitosis would trigger mitosis in the G1 cell due to the presence of mitosis specific cyclins in the second cell.

4 0
3 years ago
Historically, African elephants have had large ivory tusks. For many years, poachers (illegal hunters) have been killing elephan
gregori [183]
The correct answer is B, I know this because none of the other answers are even reasonable. For example-
A is wrong because the size of elephant tusk has not changed over time, elephant tusk just grow...
C is wrong because it makes no sense to hunt elephants with no tusk :/
D is completely wrong because tusk have nothing to do with reproduction, those are two completely separate bodily functions.........
3 0
3 years ago
Read 2 more answers
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