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finlep [7]
3 years ago
14

A school nurse is teaching a class on immunity. Which statement contains an accurate explanation about cellular defenses?

Biology
1 answer:
Usimov [2.4K]3 years ago
6 0

Answer:

yo mama

Explanation:

i dunno

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A response that is uniquely directed against pathogenic bordetella pertussis would involve what component?
xxMikexx [17]

Answer:

Antibodies

Explanation:

Bordetella pertussis is an obligate human pathogen and is the etiological agent of whooping cough. It is known to be an opportunistic organism.

The pathogenic mechanism of Bordetella pertussis is also known as virulence factor. These virulence factors are known to include adhesins such as filamentous haemagglutinin, fimbriae and pertactin, which allow B. pertussis to bind to ciliated epithelial cells in the upper respiratory tract.

It is known to be the agent of whooping cough, a highly contagious respiratory disease, dramatic for infants and also for elderly and pregnant women.

In this case, the antibodies will be the response that is uniquely directed against the organism. It is said earlier that this organism is an opportunistic one, this means that it causes infection when the immunity is down. So, when the immunity is empowered , it will definitely fight against the organism

3 0
2 years ago
In order for precipitation to take place which process in the water cycle must take place first
Anna007 [38]

Condensation, which is the process by which water vapor is changed back into liquid water. Then precipitation occurs.

3 0
3 years ago
If a true-breeding blue-flowered plant was crossed with a true-breeding white-flowered plant, what phenotypic ratio would we obs
Westkost [7]

Answer:

B. 100 percent white

Explanation:

According to Mendel's law of dominance, the dominant allele of a gene masks the expression of the recessive allele in a heterozygous state. Therefore, when two pure breeding plants that differ with respect to one genetic trait are crossed, the progeny expresses only the dominant phenotype. Here, one allele should be completely dominant over the other. The allele for the white flowers is completely dominant over the allele for the blue flowers.

Let' assume that the allele "W" imparts white color to the flowers while the allele "w" gives blue color. When a true-breeding blue-flowered plant (ww) is crossed with a true-breeding white-flowered plant (WW), the progeny would be heterozygous for the dominant allele "W" and would exhibit "white color of flowers" (the dominant trait).

WW (white-flowered plant) x ww (blue-flowered plant) = Ww (white-flowered plant)

6 0
2 years ago
A low blood ph decreases the rate of diffusion through the blood vessels and leads to slow blood flow. True or false?
FromTheMoon [43]

Answer:

True

Explanation:

5 0
3 years ago
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The _____ of a fish helps it move up and down in the water.
aliya0001 [1]

Swim Bladder           is the answer for sure

4 0
3 years ago
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