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4 years ago

What do you think of when you hear the word “diffusion”?

1 answer:

5 0

Answer: Diffusion is the net passive movement of particles (like atoms, ions or molecules) from a region in which they are in higher concentration to regions of lower concentration. It continues until the concentration of substances is uniform throughout.

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This type of membrane transport moves substances against the concentration gradient from an area of low concentration to an area

sashaice [31]

Answer:- Active transport

Explanation:-

There are two types of membrane transports

1. Passive transport - this type of transport occurs without the input of any energy and the molecules move along the concentration gradients that is from high concetration to low concentration.

2. Active transport- this type of transport takes place to move the molecules against the concentration gradient that is from low concentration to high concentration.

The active transport is of two types:

1. Primary active transport- in this type of transport ATP is used as an energy source to move the substances against the concentration gradient.

2.Secondary active transport - in this type of transport the gradient formed by the active transport is utilized and it involves the movement of 2 substances at a time aross the membrane. That is the movement of one molecule is coupled to another.

The membrane proteins that are associated with active transport are called as carrier proteins. These proteins have a binding site for the molecules that they transport. Once they bind to the specific molecules, a conformation change is induced and this leads to the transport of the molecule across the membrane.

So, the active transport is basically responsible for utilizing the energy from ATP and carrier proteins to move the substances across the membrane against their concentration gradient i.e. from low concentration to high concentration.

5 0

3 years ago

A 21-year-old college student presents for her first annual exam. She has been sexually active for 1 year and has had two partne

mojhsa [17]

Answer:

<h2>Diseases transmitted through sexual contact are sexually transmitted diseases. Individuals having more than one sexual partners and doing unprotected sex are more prone to sexually transmitted diseases.</h2>

Explanation:

Individuals having more than one sexual partners and doing unprotected sex are more prone to sexually transmitted diseases. Here, the college student has more than one partner and not always use the condoms. So, she is prone to have sexually transmitted diseases if her partner are infected. Presence of warts indicates that she might have infected with Human Papillomavirus (HPV). HPV is a sexually transmitted infection (STI).

5 0

4 years ago

HELP I NEED HELP ASAP

SpyIntel [72]

Answer:

a surface current would be faster then a deep curtent

6 0

3 years ago

Read 2 more answers

What conversion factor is needed to change from kilometers to meters

Vesna [10]

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To convert from kilometers to meters, you would multiply by 1000

So, the conversion factor would be x 1000

This can also be written as x 10^3

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4 0

3 years ago

This monster tumor is the result of stem cells being given very confusing signals

sergeinik [125]

Answer:

Glioblastoma (GBM) is the most prevalent and malignant primary brain tumor and contains ... This lack of uniformity has generated confusion and controversy by ... Most glioma CSC markers have been appropriated from normal stem cells, but the ... Gliomas contain primary cilia, and the resulting CSCs are dependent on ...

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3 years ago