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svet-max [94.6K]
3 years ago
11

The failure to deliver blood to the heart due to a narrowing of arteries results in __________.A.atherosclerosisB.a strokeC.coro

nary heart diseaseD.hypertension
Biology
1 answer:
Bond [772]3 years ago
4 0

Answer:

c

Explanation:

coronary heart disease

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Know the terms refraction, reflection and absorption as they refer to the movement of light waves
IrinaK [193]
Three cases happen when a light wave strikes an object. Light waves can either be: absorbed, reflected or refracted. The differences are as follows:

a. Absorption - light stops at the object causing it to appear dark or opaque.
b. Reflection - this could happen either in a smooth or rough surface. On a smooth surface, for example mirror or glass, light bounces off the surface at angle equal to the incoming light wave. On a rough surface e.g. earth, light bounces at many angles because the surface is uneven.
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3 years ago
In this case of trisomy 18, how many chromosomes would have been present in the first polar body?
lora16 [44]
Polar bodies serve to eliminate one half of the diploid chromosome set in meiotic division in the egg, leaving behind a haploid cell. That means that 23 pairs (46) of chromosomes are going to be separated equally, 23 for the polar body and 23 for the egg cell. In case of trisomy 18, the division is not equal. Instead, the egg cell receives 23 +1 chromosomes and the polar body receives 23 - 1= 22 chromosomes.

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3 years ago
A certain Drosophila protein-encoding gene has one intron. If a large sample of null alleles of this gene is examined, will any
Alex

Answer:

a) Yes

b) Yes

c) Yes

d) Yes

Explanation:

a. In the exons?

Yes mutant site will be expected. It will transcript-ed as well and it can be a polypeptide depending on the mutation type.

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c. In the promoter?

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Answer:

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2 years ago
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