______ act as a barrier to invading cells and viruses. muscle cells connective tissue epithelial cells none of the above

Biology

1 answer:

xz_007 [3.2K]3 years ago

3 0

Answer:

Epithelial cells

Explanation:

Epithelial cells act as a barrier to invading cells and viruses.

It lines the tissues of blood vessels in order to keep blood flowing and keeping you healthy.

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Which is the role of the electron transport chain in the process of photosynthesis? A. Cycling electrons between photosystem and

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Answer:

Explanation:

Because youcaring electrons from photosystem II, to photosystem I, to NADP+

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3 years ago

Which statement about sexual reproduction in flowering plants is true

asambeis [7]

Answer:

D) Asexual reproduction produces offspring that are genetically identical to the parent.

Explanation:

I am honestly not quite sure of this answer, but I was trying to read up on the topic and this is the answer I'm most confident in. It would make sense that the offspring are genetically identical to the parent because they would have no where else to get their genes/mix to form new ones. I really hope this helps!

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Matings between individuals from the two populations of Rhagoletis produce hybrid flies that appear to be healthy and have norma

Mama L [17]

<h2>The correct answer is : C.</h2>

Explanation:

According to the question, mating between two populations of Rhagoletis produce hybrid flies.
This means that the two population is present in the same habitat or locality, hence they are capable of coming in contact with each other and mate. Hence, the answer cannot be Habitat Isolation.
Mating produces hybrid flies. This is possible when the gametes (egg and sperm) of the two different populations are capable of capable of coming close to each other and undergoing fusion (fertilization). Hence, there is no Mechanical Isolation.
The zygote formed by the above fertilization is capable of developing into healthy hybrid flies with normal life span. Hence, Pre-zygotic Isolation is absent.
But the hybrid flies formed are sterile and not fertile, that is, they are incapable of producing viable gametes which can undergo fertilization and produce a new offspring.Therefore, the eggs laid by the hybrid flies hatch less often. Hence, there is existence of Reduced hybrid fertility.

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How often is co2 cycled through the atmosphere?

Klio2033 [76]

~Hello there! ^_^

Your question: How often is CO2 cycled through the atmosphere?

Your answer: CO2 is cycled through the atmosphere in 350 years.

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Lana71 [14]

Answer:

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i think but i dont really know sorry

Explanation:

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