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timama [110]
2 years ago
13

Most of the functions of a cell membrane are performed by _____, but the membrane is mostly made of _____.

Biology
1 answer:
Alenkasestr [34]2 years ago
8 0

Answer:

The cell membrane, also called the plasma membrane, is found in all cells and separates the interior of the cell from the outside environment. The cell membrane consists of a lipid bilayer that is semipermeable. The cell membrane regulates the transport of materials entering and exiting the cell.

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Why do scientists believe Neanderthals had some interbreeding with AMHs?
Gelneren [198K]

Explanation:

However, in 2016 researchers published a new set of Neanderthal DNA sequences from Altai Cave in Siberia, as well as from Spain and Croatia, that show evidence of human-Neanderthal interbreeding as far back as 100,000 years ago farther back than many previous estimates of humans' migration out of Africa (Kuhlwilm Dec 11, 2020

5 0
3 years ago
Salivary amylase is released in the mouth where it breaks down sugars. however, it is inactive once it reaches the stomach where
GREYUIT [131]
<span>Amylase needs an optimum pH for its activity. It is in the range of 6-7. Below or above pH will denature this enzyme. The pH level is optimum for this enzyme in the mouth and hence it catalyses the break down of sugar. The pH level of stomach is lower than its optimum level duet to the activity of gastric acid. Hence the enzyme becomes inactive in the stomach.</span>
5 0
4 years ago
A drug is any chemical substance that alters the body physically or mentally for a ________ purpose.
Natali5045456 [20]
Hello There!

A drug is any chemical substance that alters the body physically or mentally for a non - nutritional purpose.

Hope This Helps You!
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4 0
3 years ago
Which type of energy is stored in chemical compounds and released in chemical reactions
frutty [35]

Answer:

A Chemical Energy

Explanation:

Chemical energy, Energy stored in the bonds of chemical compounds.  Chemical energy may be released during a chemical reaction, often in the form of heat.

6 0
3 years ago
An average number of eggs a bird lays is based on natural selection. If a bird lays too many eggs, there a high chance that she
mr_godi [17]

The correct answer is stabilizing selection.

Stabilizing selection is a kind of natural selection in which the mean of the population steadies on a specific non-extreme trait value. This is considered to be the most general process of action for natural selection as the majority of the traits do not seem to vary radically with time.

Stabilizing selection is the reverse of disruptive selection. In spite of preferring individuals with extreme phenotypes, it favors the transitional variants. Stabilizing selection seems to eradicate the more extreme phenotypes, resulting in the reproductive success of the average or norm phenotypes.

This signifies that the most general phenotype in the population is chosen and continues to govern in the coming generations. As the majority of the traits vary slightly with time, stabilizing selection is considered to be the most usual kind of selection in the majority of the populations.


7 0
4 years ago
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