Question

multiple choice
write the capital letter of the choice that best completes the statement or answers the question. do not just circle the answer! each question is 2 points. 5 points have been added to this test for writing the letter, so if you only circle the answers, you will lose those 5 points!

1. what are the basic building blocks of life?

a. atoms
b. cells
c. carbon compounds
d. molecules

1. which of the following is not part of the cell theory?

a. all cells grow and divide.
b. all cells come from pre - existing cells.
c. cells are the basic units of structure and function in living things.
d. all life is composed of cells.

1. what is another name for the cell membrane?

a. plasma membrane
b. nuclear membrane
c. cellular envelope
d. protein membrane

1. which of the following is a cell structure that not all cells have?

a. cell membrane
b. nucleus
c. cytoplasm
d. dna

1. what is the rigid, outermost structure that surrounds plant, fungal, and bacterial cells?

a. cell membrane
b. plasma wall
c. cell wall
d. plasma membrane

1. what is the name of the model that describes the structure of a cell membrane?

a. the lock and key model
b. the lego model
c. the plasma membrane model
d. the fluid mosaic model

1. which of the following is not a major part of the cell membrane?

a. phospholipids
b. dna cubes
c. carbohydrate markers
d. protein channels

1. in a solution, what is the substance that gets dissolved?

a. the solvent
b. both the solvent and the solute
c. neither the solvent nor the solute
d. the solute

1. what is the goal for 2 solutions that are separated by a selectively permeable membrane?

a. for one solution to get all the solvent
b. for one solution to get all the solutes
c. for one solution to get all the solutes and all the solvent
d. equilibrium

Explanation:

1. Cells are considered the basic building blocks of life.
2. The cell theory does not state that all cells grow and divide (some cells like nerve cells in adults do not divide).
3. The cell - membrane is also known as the plasma membrane.
4. Prokaryotic cells do not have a nucleus.
5. The cell wall is the rigid, outermost structure in plant, fungal, and bacterial cells.
6. The fluid mosaic model describes the structure of a cell membrane.
7. DNA cubes are not a major part of the cell membrane.
8. In a solution, the substance that gets dissolved is the solute.
9. The goal for two solutions separated by a selectively permeable membrane is equilibrium (osmotic equilibrium).

Answer:

1. B. cells
2. A. All cells GROW and DIVIDE.
3. A. plasma membrane
4. B. nucleus
5. C. cell wall
6. D. The Fluid Mosaic Model
7. B. DNA cubes
8. D. the solute
9. D. equilibrium