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Zarrin [17]
3 years ago
9

17. Viruses can be used to help cure genetic diseases.

Biology
1 answer:
anygoal [31]3 years ago
3 0

Answer:

The most common gene therapy vectors are viruses because they can recognize certain cells and carry genetic material into the cells' genes. Researchers remove the original disease-causing genes from the viruses, replacing them with the genes needed to stop disease.

Explanation:

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Why is having an extra chromosome 21 tolerable to the point that someone with this condition can survive to maturity?
Vilka [71]
I think that having an extra chromosome 21 is tolerable to the point that someone with this condition can survive to maturity because it does not replicate.

There should only be a pair of chromosome 21. In the event that there are 3 chromosome 21, the person that has this extra chromosome has Down syndrome. Changes in the number and structure of this chromosome may result to delayed development, intellectual disability, but not immediate death.
6 0
3 years ago
Observation of Diffusion Rate in Relation to Cell Size
vesna_86 [32]

Explanation:

new cells rather than growing bigger. Why is this ?

There are two main reasons why cells divide rather than continuing to grow larger and larger: ... If the cell grows too large, it will have trouble moving enough nutrients and wastes across the cell membrane. Cell Division. Cell division is the process by which cellular material is divided between two new daughter cells.

Why aren't you made of a few dozen, or a

few hundred cells, instead of trillions?

if the cell grows beyond a certain limit, not enough material will be able to cross the membrane fast enough to accommodate the increased cellular volume. When this happens, the cell must divide into smaller cells with favorable surface area/volume ratios, or cease to function. That is why cells are so small.

Why don't single-celled organisms like amoebas and paramecia grow

as big as a human?     again The important point is that the surface area to the volume ratio gets smaller as the cell gets larger. Thus, if the cell grows beyond a certain limit, not enough material will be able to cross the membrane fast enough to accommodate the increased cellular volume.

i belive this is just the introduction to the project but here

4 0
3 years ago
HELP ME NOWWWWWWWWW! ASAP
Mars2501 [29]

Answer:

asthenosphere (AkA mantle)

Explanation:

The inner core is the innermost layer so this can not be it The outer core is surrounds the inner core this is not the answer. and atmosphere is the envelope of gases surrounding the earth or another planet. and we are talking about the inside of earth.

Please mark Brainleist

4 0
3 years ago
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Distingush between prokaryotic cell and eukaryotic cell by selecting the accurate statements that apply to eukaryotic cells
Igoryamba

The primary distinction between these two types of organisms is that eukaryotic cells have a membrane-bound nucleus and prokaryotic cells do not. ... Prokaryotes, on the other hand, have no membrane-bound organelles. Another important difference is the DNA structure.

8 0
2 years ago
Boat A and Boat B have the same mass. Boat A’s velocity is three times greater than that of Boat B. Compared to the kinetic ener
Kobotan [32]
D. Nine times as much.
4 0
3 years ago
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