Question

1. animal cells, plant cells, fungi, and protists often have vacuoles. what is the function of the vacuole?

a) it fills with water and acts as storage.
b) it releases materials into the air that decrease the weight of the cells.
c) it contains genetic information that controls the activities of the plant.
d) it forms a rigid substance called cellulose that supports the plant.

1. some organelles of cells are listed on the right. which of the organelles could be observed using a microscope in leaf cells and human cheek cells?

a) organelles 2 and 3 only
b) organelles 3 and 4 only
c) organelles 1, 2, and 3 only
d) organelles 1, 2, and 5 only

1. cytoplasm
2. nucleus
3. chloroplasts
4. cell wall
5. cell membrane

Explanation:

1. Vacuoles are storage organelles. They can store water, nutrients, and waste products. Option a is correct as it describes the storage function. Option b is incorrect as vacuoles do not release materials to decrease cell weight. Option c is for the nucleus (contains genetic information). Option d is for the cell - wall (contains cellulose).
2. Leaf cells (plant cells) and human cheek cells (animal cells) both have cytoplasm (a jelly - like substance where organelles are suspended), nucleus (controls cell activities), and cell membrane (regulates what enters and exits the cell). Chloroplasts (for photosynthesis) are only in plant cells (leaf cells), and cell walls (provide structure) are also only in plant cells. So organelles 1 (cytoplasm), 2 (nucleus), and 5 (cell membrane) are common.

Answer:

1. a)
2. d)