Question

read each question carefully and decide which is the best answer. fill in the bubble with the letter of the correct answer on your answer sheet. 1. which of the following correctly describes the function of the cell wall? (a) the cell wall provides rigid support and protection for the cell. (b) the cell wall is a network of fibers inside the cell that gives the cell its shape. (c) the cell wall is a barrier that allows certain substances into and out of the cell. (d) the cell wall is a series of folded membranes that produces and distributes proteins in the cell. 2. what is the difference between eukaryotic and prokaryotic cells? (a) eukaryotic cells are found in bacteria and prokaryotic cells are not. (b) prokaryotic cells are found in plants and animals and eukaryotic cells are not. (c) eukaryotic cells contain organelles and dna enclosed within a nucleus, while prokaryotic cells do not. (d) prokaryotic cells contain no organelles except dna enclosed within a nucleus and eukaryotic cells do not.

Explanation:

1. The cell wall is a rigid layer that surrounds plant, fungal, and some bacterial cells, providing support and protection. Option A correctly describes this function. Option B describes the cytoskeleton, Option C describes the cell - membrane, and Option D describes the endoplasmic reticulum.
2. Eukaryotic cells have a true nucleus with DNA enclosed within a nuclear membrane and membrane - bound organelles. Prokaryotic cells lack a nucleus and membrane - bound organelles. Option C accurately states this difference. Option A is incorrect as bacteria have prokaryotic cells. Option B is incorrect as plants and animals have eukaryotic cells. Option D is incorrect as prokaryotic cells do not have a nucleus enclosing DNA.

Answer:

1. A. The cell wall provides rigid support and protection for the cell.
2. C. Eukaryotic cells contain organelles and DNA enclosed within a nucleus, while prokaryotic cells do not.