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Sergeeva-Olga [200]
3 years ago
8

4. What is an enzyme, and what is its role in a reaction?

Biology
2 answers:
Luden [163]3 years ago
8 0

Answer:

an enzyme is a protein which is used to break down food

Explanation:

umka21 [38]3 years ago
8 0

Answer: An enzyme breaks down food

Explanation:

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You are examining a field of crop plants and notice that many of the leaves have small scattered necrotic spots on them, but non
Thepotemich [5.8K]

Answer:

Avirulent.

Explanation:

VIRULENCE is the ability of a pathogenic organism  to infects the host, leading to damages  or death of the host. The extent of these virulent effect depends on  certain chemical substances ( called Virulence factors) produced during the  pathogenic processes.

The virulence effects  is achieved  due to the ability of the virulent factor to disrupt the entire physiological mechanisms of  the organisms; e,g crop plants; though  suppression of the host immune response, disruptions of the immune mechanisms, colonization of the host DNA structure etc. Therefore the pathogenic effects suppressed the host resistance and spread throughout the host body system.

In this present scenario, the pathogenic effect of the likable bacteria; is not virulent, because

none of the d crop pant is completely diseased.

the nascent intenodes and leaves  are growing to usual size.

Consequently, the physiological and the morphological features of the crop plants are still intact. Thus the infection is AVIRULENT.

8 0
3 years ago
How does the skeleton help the body move?
Natalka [10]
Our muscles are attached to our skeleton to help us move. If we had no skeleton then  our muscles would hang limply, making it harder for us to move.
3 0
3 years ago
Read 2 more answers
You are watching a horror movie. The music changes to the familiar tune you recognize as a prelude to danger. You tense up, your
mamaluj [8]

Sympathetic nervous system is activated in this situation.

This branch of nervous system is activated when any individual encounters stressful or dangerous situation.This is responsible for 'fight or flight' response.

It takes place by activating adrenal gland which releases specific hormones adrenaline and nor adrenaline also called as catecholamines . These hormones are responsible for the appropriate physiological response to the situation.

3 0
4 years ago
1. A normal mammalian cell will shrink if it is placed into_________. (Assume all solutes are non-penetrating) A. pure water B.
GrogVix [38]

Answer:

B. 50 mM glucose; E. 300 mM glucose

Explanation:

In order for the cell to shrink the concentration of solutes in the blood should be above normal or higher than the intracellular concentration, so that water moves from the inside of the cell to the outside by the process known as osmosis.

The normal blood levels of NaCl = ~ 154 mM; therefore A, C and D will not cause any shrinkage.

The normal blood levels of glucose = ~ 3.9 to 7.1 mM; therefore water would move from the intracellular to the extracellular space since the solutes are 10x higher outside the cell, causing shrinkage of the cell.

4 0
3 years ago
What is the type of nitrogen that plants and animals cannot use without it being converted to a different form?
Yuki888 [10]
The nitrogen is captured and converted into a form that is usable by plants in a process called

<span>nitrogen fixation</span>
8 0
3 years ago
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