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erica [24]
3 years ago
5

What did Primitive anaerobic prokaryotic cells did not contain

Biology
2 answers:
yanalaym [24]3 years ago
8 0
Anything prokaryotic doesn't contain a nucleus
GenaCL600 [577]3 years ago
4 0

hydrogen sulfide

not 100% sure

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kiruha [24]

Answer:

1. 62 percent water, 16 percent fat, 16 percent protein, 6 percent minerals, and less than 1 percent carbohydrate, along with very small amounts of vitamins and other miscellaneous substances.

2. Food.

3. Catabolic, Anabolic, Metabolism

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3 years ago
NO FAKE ANSWERS AND NO LINKS. How much nitrogen does the atmosphere contain?
Softa [21]

in the earth's atmosphere is made up about approximately 78 percent nitrogen and 21 percent oxygen.

8 0
3 years ago
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In humans, a type of blindness is due to a dominant allele; normal vision is the result of a recessive allele. Migraine headache
yan [13]

Answer:

Yes.

Probability of such child = 1/2 or 50%

Explanation:

According to the question, below are the genotypes and phenotypes possibilities:

aa = normal vision & no headache

Aa = normal vision & no headache

AA = blindness & headache

                                                                      Male                       Female

                                                                        Aa                            aa

Possible genotypes of progeny:            Aa        Aa           aa         aa

So it is clear that out of the 4 probable children, 2 with 'genotype aa' will have normal vision & no headache.

Mathematical expression is as under:

2/4 = 1/2 that means 50% progeny.

5 0
3 years ago
Imagine that zika virus has a 1% incidence in the population. A test for the virus has a 3% false positive rate and no false neg
Darina [25.2K]

Answer:

The answer is 97%.

Explanation:

The zika virus' 1% incidence rate in the population has no effect over the probability of the patient being infected or not. If the test has a 3% false positive rate that means that if it is positive, the results have a 97% chance of being true. Therefore the chance that the person who took the test and had a positive result being actually infected is 97%.

I hope this answer helps.

5 0
3 years ago
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which hormone influences a person's rate of metabolism? a. PTH b. aldosterone c. thyroxine d. calcitonin
Vesna [10]
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c. thyroxine </span><span>The thyroid releases too much of the hormone thyroxine, which increases the person's basal metabolic rate.</span>
7 0
3 years ago
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