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DIA [1.3K]
3 years ago
9

During the winter of 2009, you contracted the influenza A (H1N1) virus, or swine flu. Which type of cell would recognize the vir

us, and what would be the cell's response?
Biology
2 answers:
Firdavs [7]3 years ago
5 0
S-IgA and IgG antibodies and cytotoxic T lymphocytes would recognize the virus and  protect the body from re-infection. IgGs from the serum will move into the mucosa to be distributed on the alveolar epithelium and helps in preventing influenza pneumonia.
ddd [48]3 years ago
3 0

Answer:

The correct answer would be memory B cells.

Memory B cells are the type of B cells which are formed after the primary infection.

These are important as they help in producing the more intense and accelerated immune response during secondary infection or when the same antigen or infectious agent enters the body.

They do so by producing the polyclonal response, that is, the same epitope is attacked by multiple copies of B cells.

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How do the random distribution of chromosomes and crossovers create more variation in the resulting gametes?
Oksanka [162]

When cells divide during meiosis, homologous chromosomes are randomly distributed during anaphase I, separating and segregating independently of each other. This is called independent assortment. It results in gametes that have unique combinations of chromosomes.

<em>Crossing over creates new combinations of genes in the gametes that are not found in either parent, contributing to genetic diversity.</em>

4 0
3 years ago
A part of an mRNA has the sequence GGA. Which change to the sequence would indicate a missense mutation
MissTica

Answer:

A replacement of a letter with different letter would indicate a missense mutation. (eg. GGA would become something like GCA and it would make something completely different).

Explanation:

A missense mutation is when the RNA replicates the instructions wrong from the DNA. When RNA is transcribed to make amino acids, it will make a completely different amino acid rather than the one that is needed/blueprinted. For example, if the sequence was AAG in the RNA (Derived from TTC DNA), it would create Lys amino acid. However, if the RNA sequence was AGG (Derived from abnormal TCC DNA), it would make Arg amino acid, which is different.

3 0
3 years ago
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Help please (the subject is science)
Anna007 [38]

Answer:

1. muscular system

2. lymphatic system

Explanation:

I think this is right. forgive me if I'm wrong

7 0
2 years ago
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The rapid growth of the human population during the last two centuries is INDIRECTLY responsible for which environmental concern
Rufina [12.5K]
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5 0
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Which type of mutation results in receiving an extra chromosome?
MrRa [10]

NUCLEAR ENERGY

Every second of every day our Sun converts about 4.2 million metric tons (4,200,000,000 kilograms) of hydrogen into helium using a nuclear <span>fusion </span>process. During this nuclear reaction, a small portion of matter is converted to an enormous amount of energy. It is this output that provides the energy for photosynthesis and for heating our atmosphere and oceans.

In this lesson, you will learn the details of the nuclear fusion process. You will also learn about another important nuclear reaction called fission and some useful applications of it.

OBJECTIVES<span>Describe the process of nuclear fusion.Describe the process of nuclear fission.Identify some applications for nuclear reactions.List positive and negative factors associated with nuclear reactions.</span><span>VOCABULARY</span>

8 0
3 years ago
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