Question

question 6 (3 points) (02.02 lc) which of the following best describes prokaryotes and eukaryotes?
○ a prokaryotes have a nucleus and eukaryotes do not.
○ b prokaryotes do not have a nucleus; eukaryotes have a nucleus.
○ c both have membrane-bound structures.
○ d prokaryotes have membrane-bound structures and eukaryotes have free floating organelles.

question 7 (3 points) (02.02 lc) based on the cell theory, which of the following is true?
○ a all cells are too small to be seen.
○ b all living things are made of cells.
○ c small organisms have more cells than large organisms.
○ d large organisms have larger cells than small organisms.

Explanation:

Question 6

To determine the correct description of prokaryotes and eukaryotes, we analyze each option:

• Option a: Prokaryotes lack a nucleus, while eukaryotes have one. So this is incorrect.
• Option b: Prokaryotes do not have a membrane - bound nucleus, and eukaryotes have a nucleus (a membrane - bound organelle). This is the key difference between prokaryotes and eukaryotes.
• Option c: Prokaryotes do not have membrane - bound structures (organelles), only eukaryotes have membrane - bound organelles. So this is incorrect.
• Option d: Prokaryotes have no membrane - bound structures, and eukaryotes have membrane - bound organelles (not free - floating). So this is incorrect.

To answer based on cell theory, we analyze each option:

• Option a: Some cells can be seen with the naked eye (e.g., an egg cell). So this is incorrect.
• Option b: One of the main tenets of cell theory is that all living things are composed of one or more cells. This is correct.
• Option c: The number of cells in an organism is not related to its size in this way. For example, a large tree may have fewer cells than a small - sized but highly cellular organism like a sponge in some cases. So this is incorrect.
• Option d: Cell size is not related to the size of the organism. Large organisms have more cells, not larger cells. So this is incorrect.

Answer:

b. Prokaryotes do not have a nucleus; eukaryotes have a nucleus.

Question 7