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Ann [662]
1 year ago
7

If you turned a frog egg upside down, you would expect it to reorient relative to gravity because?

Biology
1 answer:
lianna [129]1 year ago
3 0

If you turned a frog egg upside down, you would expect it to reorient relative to gravity because the dense yolk granules concentrated in the vegetal hemisphere of the egg respond to gravity.

The frog egg is very large as compared to the normal egg cell. It is unevenly distributed with a top dark colored pole called animal pole and a light yolky pole called a vegetal pole.

The vegetal pole is concentrated with the yolk that is present for providing the nourishment to the growing embryo. The animal pole is the one from where the sperm enters and the development of embryo take place.

As the vegetal pole is denser as compared to animal pole so it will respond to the gravity and reorient along the direction of gravity.

To learn more about frog egg here

brainly.com/question/23787609

#SPJ4

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Which pair of biogeographic regions is the most likely to have species that show convergent evolution?.
Alexeev081 [22]

The biogeographic regions that are the most likely to have species that show convergent evolution are Nearctic and Palearctic.

<h3>What are Nearctic and Palearctic?</h3>

The Nearctic and Palearctic are two of the eight (8) biogeographic regions present on the Earth planet.

Palearctic represents (in turn) the most widely extended biogeographic region present on the Earth planet.

Biogeographic regions are specific areas consisting of particular biological (biotic components) features.

Learn more about biogeographic regions here:

brainly.com/question/14917759

3 0
2 years ago
HELP!!! WILL GIVE BRAINLIEST TO BEST ANSWER. 40 POINTS!!!
dedylja [7]
Not really sure but I think is that rodents mate randomly but wait for someone else to answer cause I’m not 100% sure
7 0
2 years ago
Why are scientists warning that exclusively growing this mutant type by asexual reproduction presents a serious disadvantage?
Alla [95]

Answer:

Asexual reproduction can be described as a process in which daughter cells are produced which are 100% identical to the parent cells. Unlike the process of sexual reproduction, no recombination occurs in asexual reproduction. Hence, no variability is produced when organisms reproduce by this method.

<u><em>As there will be lack of variability in asexual reproduction, the whole of the particular species might become endangered or extinct due to a disease or due to other factors like pests.</em></u>

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

7 0
3 years ago
When human red blood cells are placed in pure water, the cells immediately burst. which process explains what happens to the red
irga5000 [103]
The process of osmosis explains what happened to the cells.

Osmosis is where water molecules will flow from a region of higher water potential to a region of lower water potential, through a partially permeable membrane. Red blood cell is a human cell and have a partially permeable membrane. At the same time, pure water has the highest water potential among all substances, and of course higher than the cytoplasm of the red blood cell, therefore, water molecules will flow from the water to the red blood cell.

So much water has flown to the red blood cells that the cell membrane cannot hold all and eventually the cell bursts. Therefore, the process of osmosis explains this result.
6 0
3 years ago
The local reaction that occurs in the body as a result of invasion or injury is called the _____________ _________________
brilliants [131]

Answer:

Inflammation

Explanation:

The inflammatory response (inflammation) can be described as a localized response to an injury or to the destruction of tissues. It occurs when tissues are injured by bacteria, trauma, toxins, heat, or any other cause. The cells in  damaged tissue release chemicals that can cause swelling, redness, heat, pain in the damaged area, all as part of the healing process. Some of those chemicals are cytokines that bring in body's immune cells. Others are histamine and prostaglandins which cause swelling, pain and fever. As the body heals, the inflammation gradually decreases.

4 0
3 years ago
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