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tatiyna
3 years ago
7

What are the two mechanisms by which enveloped viruses gain access to a host cell?

Biology
1 answer:
stellarik [79]3 years ago
5 0

Pathogenesis is one I think

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The very rare Bombay blood phenotype in humans results in blood type O because of the lack of both the A and B antigens in indiv
madam [21]

Answer:

The probability that the child will have type blood B equals <u>3/16</u>.

Explanation:

<u>Available data:</u>

  • Individuals with the rare Bombay blood phenotype lack both the A and B antigens in individuals and/or are of hh genotype.
  • Cross between two parents that are both of I A I B Hh genotype

Cross: IAIB Hh    x    IAIB Hh

Gametes) IAH, IAh, IBH, IBh  

                IAH, IAh, IBH, IBh

Punnett square)        IAH            IAh         IBH         IBh

                   IAH      IAIAHH     IAIAHh    IAIBHH   IAIBHh

                   IAh       IAIAHh     IAIAhh     IAIBHh    IAIBhh

                   IBH      IAIBHH     IAIBHh     IBIBHH   IBIBHh

                   IBh       IAIBHh     IAIBhh      IBIBHh   IBIBhh

F1) Genotype

  •     1/16 IAIA HH
  •     2/16 IAIAHh
  •     1/16 IAIAhh
  •     2/16 IAIBHH
  •     4/16 IAIBHh
  •     2/16 IAIBhh
  •     1/16 IBIBHH
  •     2/16 IBIBHh
  •     1/16 IBIBhh

    Phenotype

  •     3/16 Blood type A
  •     6/16 Blood type AB
  •     3/16 Blood type B
  •     3/16 Blood type 0  
3 0
3 years ago
A population of beetles changing from yellow to green and surviving better is an example of
Nata [24]

Answer:

C. natural selection

Explanation:

Natural selection is when the organisms that have the better adaptation so they survive. In this case, the green was the better adaptation so they lived.

6 0
3 years ago
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kipiarov [429]

Answer:

1) B - protein channel

2) D - to assist in the movement of substances across the membrane by facilitated diffusion or active transport

Explanation:

1) B is the answer because the proteins would travel through the protein channel to enter or leave the cell.

2) D is the answer because the channel allows protein molecules to pass through a selectively permeable cell membrane through active transport and facilitated diffusion.

Hope this helps!

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Photosynthesis is undergone by plants to produce a usable food source. Which of
arlik [135]

Answer:

Chloroplast

Explanation:

Chloroplasts are organelles found in green plants. They are the sites of photosynthesis. Chloroplasts contain chlorophyll, a photosynthetic pigment that traps light energy. This energy is used to power a series of reactions that convert water and carbon dioxide into sugars.

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