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Marizza181 [45]
3 years ago
10

What are the four weak (noncovalent) interactions that determine the conformation of a protein?

Biology
1 answer:
Novay_Z [31]3 years ago
3 0
Ionic bonds, hydrophobic interactions, hydrogen bonds, and Vander waals forces.
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2. When diffusion has reached equilibrium, we say that
madam [21]

Answer:

See Below.

Explanation:

The key word here is <em>net. </em>The net movement has reached zero when a system is in equilibrium but there are still motion's going back and forth due to statistics and just random brownian motion.

Think of it this way, if there are 100 people walking forwards in a crowd but 2 are moving against the crowd, the net movement is still forwards because the bulk of people are going in that direction. However, there are still 2 people moving against.

Same here, if we are talking about a diffusion, let's say in the case of osmosis, if most of the solute is moving across a membrane then we'd say its net direction is that way but that doesn't mean that there aren't processes happening in the other direction. Water molecules in osmosis mostly diffuse, chemically speaking (because you can say this biologically in a different way), from the probability of water molecules colliding with each other and passing the membrane so even if there is a net movement in a certain way their random motion can make them go to the other side just as well. If the fact that motion stops at equilibrium were the case a lot of systems, both chemical and biological, would not exist as we know it.

Think net = bulk <u>NOT</u> <em>total</em> or <em>entire.</em>

8 0
3 years ago
9. What is the first event that occurs when a virus infects a host cell?
olga nikolaevna [1]

Answer:

B

Explanation:

first it attaches to the host cell membrane

7 0
3 years ago
Kim wanted to determine if certain seeds require sunlight in order to germinate. She placed one seed on a moist paper towel in t
irina1246 [14]

Answer:

It is the amount of sunlight

7 0
3 years ago
Identify the organelles in the cell to the right
GalinKa [24]

Answer:

It's been a while since I took bio, but I think these are all right..

Explanation:

A is the nuclear envelope

B is the vacuole

C is the centrioles

D is the cytoplasm

E is the cell membrane

F is the mitochondria

Hope this helps!

4 0
3 years ago
Read 2 more answers
Which force most likely created this mountain?
Free_Kalibri [48]

Answer:

third one

Explanation:

shearinh tension

7 0
3 years ago
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