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Julli [10]
3 years ago
10

Diffusion is the spontaneous movement of a substance from an area of what

Biology
1 answer:
Papessa [141]3 years ago
6 0
From an area of high concentration to an area of low concentration.
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Which areas in a secondary lymphoid organ allows intimate contact between blood and the lymphocytes?
tester [92]

Answer: White pulp of the spleen

Explanation:

The white pulp of the spleen is that region found in the spleen which appears white in color.

It appears whiter than the surrounding red pulp on the gross section which consitutes to about 25% of the whole splenic tissue.

This area has antigen presenting cells and dendritic cells and macrophages. Some of the cells there are known as metallophillic mcrophages which helps in keeping the body free from diseases.

5 0
3 years ago
A trait has two alleles, represented by p and q. If p = 0.35, what is q?
Whitepunk [10]
We know that:
p+q=1

We can plug it in:
0.35+q=1

q = 1-0.35= 0.65

So, q = 0.65
5 0
3 years ago
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gets rid of cell waste by breaking down large molecules into smaller ones for the cell to excrete. The helps these waste molecul
Aleonysh [2.5K]

Answer:

Lysosomes I believe are the parts of a cell that gets rid of waste.

7 0
3 years ago
What moves across axons
dexar [7]

Answer:

When a nerve impulse reaches the end of an axon, the axon releases chemicals called neurotransmitters. Neurotransmitters travel across the synapse between the axon and the dendrite of the next neuron.

Explanation:

Thats all i could think of

8 0
3 years ago
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In a line of human cells grown in culture, a geneticist isolates a temperature-sensitive mutation at a locus that encodes an ace
GarryVolchara [31]

Answer:

A general decrease in transcriptional activation

Explanation:

When acetyl groups are added to histone proteins by acetyltransferase enzymes, the 30-nm chromatin fiber will not be formed because the proteins are prevented from doing so. This further destabilizes the chromatin structure and allows the occurrence of transcription. However, raising the cells to  40°C does not allow the acetyltransferase enzyme to function and hence the acetyl group will be hindered from being added to the histone protein which is the main target of the enzymes. Thus, transcription activation will be blocked because the chromatin and nucleosomes would remain stabilized.

5 0
3 years ago
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