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otez555 [7]
3 years ago
5

What types of molecules may not need transport proteins to be able to cross cytoplasmic membranes?

Biology
1 answer:
frozen [14]3 years ago
4 0

The correct answer is small hydrophobic molecules.

The smaller the molecule and the more hydrophobic, or nonpolar, it is, the more rapidly it will diffuse across a membrane. It is because of the composition of membrane (lipid bilayer). By contrast, membrane is highly impermeable to charged molecules (ions), no matter how small they are.


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Due to a mutation in the HEXA gene, a substance called GM2, normally present in the tissues and nerve cells of the brain, accumu
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Answer:

Lysosomes.

Explanation:

HEXA (Hexosaminidase A) is the functional enzyme and encoded by the HEXA gene. The main function of this enzyme is the hydroxylation of the gangliosides.

The mutation in this gene leads to the lysosomal storage disease. The GM2 starts accumulating in the lysosomes and causes Tay Sach's disease. This is a genetic disorder that leads to the breakdown of the cells of the spinal cord and the brain.

Thus, the answer is lysosomes.

6 0
3 years ago
Explain how Newton's first law derived from Newton's second law.
KATRIN_1 [288]
The second law describes the relationship between force, mass and acceleration; like Force (Newtons) equals Mass Time Acceleration. Newton's first law defines inertial reference frame as that reference frame where an object will move with constant velocity if no forces are acting on point mass.

Hope this helps you =)
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8 0
3 years ago
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Over [174]

Answer:

i had to list all the facts cuz we didnt have a diagram

Explanation:

The mantle is the mostly-solid bulk of Earth's interior. The mantle lies between Earth's dense, super-heated core and its thin outer layer, the crust. The mantle is about 2,900 kilometers (1,802 miles) thick, and makes up a whopping 84% of Earth's total volume.

7 0
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Which statement best describes a flowchart
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A diagram of the sequence of movements or actions of people or things involved in a complex system or activity.
5 0
3 years ago
Read 2 more answers
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