Question

(3) synthesis of molecules
(4) release of energy

1. which structure shown in the diagram below digests worn out cell organelles?

(1) 1
(2) 2
(3) 3
(4) 4

1. which cell structure in the above diagram is the site for protein synthesis?

(1) 1
(2) 2
(3) 3
(4) 4

1. which cell structure in the above diagram is the site of cellular respiration?

(1) 1
(2) 2
(3) 3
(4) 4

1. an organelle that produces and releases atp energy for metabolic activity in a nerve cell is the

(1) chloroplast
(2) ribosome
(3) mitochondrion
(4) vacuole

1. metabolic poisons work by inhibiting atp (energy) production. which type of transport would be affected?

(1) osmosis
(2) facilitated diffusion
(3) active transport
(4) simple diffusion

1. what is common to all cells?

(1) all cells have a cell wall.
(2) all cells are photosynthetic.
(3) all cells have a nucleus.
(4) all cells come from preexisting cells

Explanation:

1. Lysosomes digest worn-out cell organelles; structure 3 is a lysosome.
2. Ribosomes are the site of protein synthesis; structure 1 is a ribosome.
3. Mitochondria are the site of cellular respiration; these are the oval, folded structures in the diagram, which correspond to option (2) 2.
4. Mitochondria produce ATP for cellular metabolic activity, including in nerve cells.
5. Active transport requires ATP to move substances against their concentration gradient, so inhibiting ATP production will stop this process.
6. The cell theory states that all cells arise from preexisting cells; this is true for all cells (prokaryotes and eukaryotes), while cell walls, photosynthesis, and nuclei are not universal.

Answer:

1. (3) 3
2. (1) 1
3. (2) 2
4. (3) Mitochondrion
5. (3) active transport
6. (4) All cells come from preexisting cells