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goblinko [34]
3 years ago
9

Which statement best describes the role of the cell membrane?

Biology
2 answers:
Vlada [557]3 years ago
6 0
Your answer would be C.It encloses the cytoplasm.
Luda [366]3 years ago
4 0
C.  The cell membrain is around the cell protecting, kind of like the membrain of an egg.
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A new kind of tulip is produced that develops only purple or pink flowers. Assume that flower color is controlled by a single-ge
Sophie [7]

Answer:

a. purple allele (C) = 0.609, pink allele (c) = 0.391

b. purple homozygotes = 371, pink homozygotes = 153, heterozygotes = 476

Explanation:

Given -

Purple flowers - 847

Pink flowers - 153

The frequency of recessive genotype i.e

q^ 2 = \frac{153}{1000} \\q^ 2 = 0.153\\

Frequency of recessive allele i.e q is equal to

q = \sqrt{0.153} \\q = 0.391

As per hardy Weinberg's first equilibrium equation -

p + q = 1\\p = 1-q\\p = 1-0.391\\p = 0.609

Frequency of purple homozygous species

= p^2\\= 0.609^2\\= 0.371

Number of purple homozygous species = 0.371 * 1000= 371

Number of pink homozygous species = 0.153 * 1000= 153

Heterozygous species is equal to

(1-0.371-0.153)* 1000\\= 0.476 * 1000\\= 476

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3 years ago
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A 17-year-old girl was injured when her car was struck from behind while she was stopped at a red light. she is complaining of a
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3 years ago
It is often difficult to save individual species
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Consider how to complete this timeline to show the order in which different evolutionary ideas were developed.
patriot [66]

Answer:

The answer is c. W,X,Z

Explanation:

According to the evolutionary timeline:

  • (W)  In 1798, Thomas Robert Malthus published an essay, "An Essay on the Principle of Population." Malthus proposed that the current rate of population growth would deplete current resources.
  • (X)  1809 marked the publication of the first theory of evolution. Jean Baptiste Lamarck proposed that evolution occurred through the inheritance of acquired characters.
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2 years ago
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To be a possible answer to a scientific question , a hypothesis must be ?
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Answer:

Testable?

Explanation:

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