Which of the following is not a distinguishing characteristic of prokaryotic cells?
a. They usually have a single, circular chromosome.
b. They have 70S ribosomes.
c. They have cell walls containing peptidoglycan.
d. Their DNA is not associated with histones.
e. They lack a plasma membrane.

Question

Which of the following is not a distinguishing characteristic of prokaryotic cells?

a. They usually have a single, circular chromosome.

b. They have 70S ribosomes.

c. They have cell walls containing peptidoglycan.

d. Their DNA is not associated with histones.

e. They lack a plasma membrane.

Accepted Answer

Hi everyone. Let's take a look at this practice problem together. Which of the following characteristics describes a prokaryotic cell. The answer options are a, their nucleus is covered by a nuclear membrane B. They have a linear DNA C, they have an extensive endo membrane system and D they have ribosomes. So recall that all organisms can be classified as either prokaryotic or eukaryotic. Prokaryotes are usually smaller and simpler than eukaryotes. Prokaryotes include bacteria and archaea. So what is a characteristic of prokaryotic cells? Option? A recall that one major difference between prokaryotes and eukaryotes is that prokaryotic cells do not have a nucleus. So option A is incorrect. Option B recall that a linear DNA is a characteristic of eukaryotes. Prokaryotes have a single circular DNA molecule. So option B is also incorrect. Option C recall that an endo membrane system is a group of membranes and organelles found in eukaryotic cells. Only prokaryotes do not have membrane bound organelles. So option C is incorrect. The correct answer is option D ribosomes. So both eukaryotes and prokaryotes contain ribosomes which are responsible for protein synthesis and thus are needed for survival. So the correct answer is option d they have ribosomes? All right. Everyone. I hope you found this helpful and I'll see you soon for the next practice problem.

Which of the following is not a distinguishing characteristic of prokaryotic cells?
a. They usually have a single, circular chromosome.
b. They have 70S ribosomes.
c. They have cell walls containing peptidoglycan.
d. Their DNA is not associated with histones.
e. They lack a plasma membrane.

Verified Solution

Key Concepts

Prokaryotic Cell Structure

Ribosome Composition

Cell Wall Composition

Which of the following is not a distinguishing characteristic of prokaryotic cells?a. They usually have a single, circular chromosome.b. They have 70S ribosomes.c. They have cell walls containing peptidoglycan.d. Their DNA is not associated with histones.e. They lack a plasma membrane.

Verified Solution

Key Concepts

Prokaryotic Cell Structure

Ribosome Composition

Cell Wall Composition

Which of the following is not a distinguishing characteristic of prokaryotic cells?
a. They usually have a single, circular chromosome.
b. They have 70S ribosomes.
c. They have cell walls containing peptidoglycan.
d. Their DNA is not associated with histones.
e. They lack a plasma membrane.