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Tamiku [17]
3 years ago
13

HELP, people that are good at bio

Biology
1 answer:
olga_2 [115]3 years ago
8 0
The synthetic estrogen-like hormone is classified as a xenohormone. Xenohormones have hormone like affects when absorbed or ingested by animals. As a result, they cause a variety endocrine complications. These types of compounds in the environment can easily find their way into the fishes that humans consume and eventually cause endocrine problems in the human population.
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Which type of molecule will require energy to cross the cell membrane? Question 3 options: A) carbon dioxide B) Na+ C) nonpolar
timofeeve [1]

Answer:

B) Na+

Explanation: Na+ molecule is polar, oxygen and carbon dioxide are nonpolar molecules. The cell membrane is a <em>phospholipid bilayer</em> made up of lipid molecules with polar and nonpolar ends. Since it is a bilayer, two phospholipid layers are arranged, one on the other in such a way that one faces the back of the other. The non polar ends are away from outside and inside of the cell, while  the polar ends faces towards all the molecules inside and outside the cell.

Since polar-polar molecules repel each other, Na+ can't pass through the cell membrane easily. So it uses the proteins attached the cell membrane inside and outside to transport such molecules by using energy in terms of ATP.

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3 years ago
Which organism is not limited by size because of its structures and life cycle? firefly octopus tree frog orca
Llana [10]

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 B.  Octopus

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Because octopus lack bone structure allowing it to maneuver easier and fit in tight spaces

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What is the main idea of this passage?
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The green revolution solved one problem but created new ones

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edg

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