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2 years ago

Prokaryotes contain all all of the following except ___.

Biology

2 answers:

Anton [14]2 years ago

3 0

The answer is B. a nucleus.

Prokaryotic cells do not have a nucleus. They have ribosomes, a cell membrane, a cell wall, and DNA, but lack a nucleus. Prokaryotes also don't have mitochondria or chloroplasts and generally lack organelles.

Bingel [31]2 years ago

3 0

Answer:

A nucleus. (Ans. B)

Explanation:

Prokaryotes are a unicellular organism that lacks a nucleus and other cell organelles due to the absence of internal membranes. The prokaryotic cell membrane is made up of phospholipids and the cytoplasm contains ribosomes, which carry out protein synthesis and a double-stranded DNA chromosome (which is circular in structure).

They are reproducing through asexual reproduction mainly through binary fission. They have various shapes, four basic shapes of bacteria are:

1) Cocci

2) Bacillus

3) Spiral bacteria

4) Vibrio

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Human albinism is an autosomal recessive trait. Suppose that you find a village in the Andes where 1/4 of the population is albi

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Answer:

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Explanation:

According to the given information, the total number of albino people in the population= 1000/4 = 250.

Since albinism is an autosomal recessive trait, the genotype of albino people would be homozygous recessive. Therefore, the frequency of homozygous recessive genotype in the population (q2) = 250/1000= 0.25.

The frequency of recessive allele (q) = square root of 0.25 = 0.5

Since p+q=1. So, p (frequency of dominant allele) = 1-q = 1-0.5 = 0.5

Frequency of heterozygotes in the population= 2pq = 2 x 0.5 x 0.5 = 0.5 or 50%

Therefore, expected number of heterozygotes in the given population= 50% of 1000 = 500

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3 years ago

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3 years ago

The drama club is selling tickets to their play. Tickets cost $12 for students and $20 for adults. The club sold 150 tickets and

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Answer:

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3 years ago

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gizmo_the_mogwai [7]

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