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Anton [14]
3 years ago
13

GUYS HELP!!!

Biology
1 answer:
alex41 [277]3 years ago
3 0

Answer:

a single genetic disorder that can produce several symptoms ... Marfan syndrome. Genetic heterogeneity is. when the same phenotype may result from the actions of different genes ... An example of a condition that exhibits genetic heterogeneity is ... Polygenic means. the traits are determined by more than one gene.

Explanation:

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Which description accurately describes the cell membrane?
Alex Ar [27]

Answer:

b. a semi-permeable double layer of phospholipids that have hydrophilic heads and hydrophobic tails

Explanation:

B is correct as the cell membrane is selectively semi-permeable. It is selectively semi-permeable because this quality allows it to control what can and can't enter the cell, and how it does so.

The cell membrane also has a phospholipid bi-layer comprised of a double layer of phospholipids which have hydrophilic head and hydrophobic tails. This is because the heads are made of phosphate and are polar and are therefore attracted to water (hydrophilic), while the tails are made of lipids (i.e. fats, oils) which do not mix with water and are therefore hydrophobic.

The properties of each phospholipid is also why they form the double layer structure, the hydrophilic heads naturally face outwards into the water and protect the hydrophobic tails on the inside.

Hope this helped!

4 0
3 years ago
HOW CAN A MUTATION IN A GENE AFFECT THE TRAITS THAT AN ORGANISM HAS
White raven [17]
It can impact its physical characteristics
3 0
3 years ago
Scientists can use a _ to make good predictions
nadya68 [22]

Answer:

I would either say prediction or a hypotheses.

Explanation:

hope this helps!! :) :) :)

3 0
3 years ago
a leaf cell has a very low concentration of salt. What would happen to a leaf cell if it were placed in a highly concentrated sa
Travka [436]

Answer:

When a leaf is placed in a solution whose salt concentration is higher than the salt concentration of the leaves, the water with in the leaves shall move out of the leaves due to the osmotic pressure gradient. This will cause the plant cell devoid of water thereby leading them to shrink and wilt.

Explanation:

4 0
3 years ago
When population growth increases in an area, what is happening to the birth rate and age structure of that population?
dangina [55]

Answer:

increasing birth rate with a greater number of young organisms

8 0
3 years ago
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