Question

1. the organelle on the left uses sunlight, carbon dioxide and water to produce food molecules (in the form of glucose) and oxygen. what is the name of the organelle and what process does it perform?

a. mitochondria, photosynthesis c. chloroplast, photosynthesis
b. mitochondria, cellular respiration d. chloroplast, cellular respiration

1. the organelle on the right uses food molecules (in the form of glucose) and oxygen to produce atp, carbon dioxide and water. what is the name of the organelle and what process does it perform?

a. chloroplast, photosynthesis c. chloroplast, cellular respiration
b. mitochondria, cellular respiration d. mitochondria, photosynthesis

1. what characteristic of the cell - membrane is illustrated in this drawing?

a. phospholipid bilayer c. selective permeability
b. fluid mosaic construction d. impermeability to water

1. in winter people often throw salt on their sidewalks to prevent ice from forming. in spring they find the grass along the sidewalks is dead, how do you account for this?

a. the plant cells will stay the same. c. the plant cells will lose salt
b. the plant cells will lose water. d. the plant cells will gain water.

Explanation:

1. Chloroplasts use sunlight, carbon - dioxide and water to perform photosynthesis.
2. Mitochondria use glucose and oxygen to perform cellular respiration to produce ATP, carbon - dioxide and water.
3. The cell membrane structure shown represents selective permeability.
4. When salt is thrown on sidewalks, the high salt concentration outside plant cells causes water to leave the plant cells by osmosis, killing the grass.

Answer:

1. c. chloroplast, photosynthesis
2. b. mitochondria, cellular respiration
3. c. selective permeability
4. b. The plant cells will lose water.