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Tresset [83]
3 years ago
7

A scientist is studying specialized cells that help pump blood. Which cells is she most likely studying?

Biology
1 answer:
erica [24]3 years ago
8 0

Answer:

B. cardiac cells, which are a type of muscle cell

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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
Vitamins A, D, E, and K are dependent upon carbohydratesproteinsfats for their absorption by cells.
daser333 [38]
False, the description is incorrect.

The only right answer is oil or lipid or fats. These lipid macromolecules are the only substance needed in order for these vitamins A, D E and K to be absorbed by the cell and be used in many cellular activities. 
5 0
3 years ago
Which of the following is correct about the human immune system when a pathogen is found in the body
GuDViN [60]

Answer:

I'm pretty sure it's the white blood cells, because they contain antibodies to neutralise the pathogen :)

8 0
3 years ago
I've been struggling with this for a few hours. If someone could provide an answer I could greatly appreciate it!
natka813 [3]

Answer:

See explain

Explanation:

I gotchu. First, let's just remove A from the beaker and feed it to a rat. If he lives, the poison is A, if not it's still in one of the 3. Now, remove B and feed to a rat. If he dies, it's not B or A . . . so on until you have your answer.

4 0
3 years ago
Read 2 more answers
Is Ss recessive trait?
Sedbober [7]
When a trait is recessive, an individual must have two copies of a recessive allele to express the trait. Recessive alleles are denoted by a lowercase letter (a versus A). Only individuals with an a genotype will express a recessive trait; therefore, offspring must receive one recessive allele from each parent to exhibit a recessive trait.
4 0
3 years ago
Read 2 more answers
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