QUESTION 1
- The plasma membrane is composed mostly of ____.
a. | phospholipids | |
b. | cholesterol | |
c. | triglycerides | |
d. | steroids | |
e. | sphingolipids |
5 points
QUESTION 2
- When chlorophyll absorbs light energy, ____.
a. | chlorophyll is converted to carotene | |
b. | the molecules begin to move more rapidly | |
c. | the plant becomes radioactive | |
d. | electrons jump to a higher energy level | |
e. | the molecules become ionized |
5 points
QUESTION 3
- In eukaryotes, DNA is transcribed in the _____.
a. | mitochondria | |
b. | cytoplasm | |
c. | ribosomes | |
d. | nucleus | |
e. | endoplasmic reticulum |
5 points
QUESTION 4
- New alleles arise by _____.
a. | crossing over | |
b. | mutation | |
c. | independent assortment | |
d. | sexual reproduction | |
e. | asexual reproduction |
5 points
QUESTION 5
- Mutations in genes that control _____ are likely to cause cancer.
a. | phenotype expression | |
b. | metabolism | |
c. | ribosomal proteins | |
d. | cell cycle checkpoints | |
e. | telomere shortening |
5 points
QUESTION 6
- Cells with two of each kind of chromosome are _____.
a. | aneuploid | |
b. | diploid | |
c. | triploid | |
d. | haploid | |
e. | tetraploid |
5 points
QUESTION 7
- How many nucleotides comprise one codon?
a. | 2 | |
b. | 3 | |
c. | 5 | |
d. | 6 | |
e. | 16 |
5 points
QUESTION 8
- Which organelle functions in the recapture of energy from organic compounds?
a. | Golgi body | |
b. | mitochondria | |
c. | lysosome | |
d. | ribosome | |
e. | endoplasmic reticulum |
5 points
QUESTION 9
- The nucleus of an atom contains ____.
a. | protons only | |
b. | electrons only | |
c. | neutrons only | |
d. | protons and neutrons | |
e. | protons and electrons |
5 points
QUESTION 10
- Glycolysis converts glucose into ____.
a. | pigments | |
b. | organic compounds | |
c. | proteins | |
d. | electrons and protons | |
e. | heat energy |
5 points
QUESTION 11
- A parent cell with 12 chromosomes will produce daughter cells with _____ chromosomes by mitosis.
a. | 48 | |
b. | 24 | |
c. | 12 | |
d. | 6 | |
e. | 3 |
5 points
QUESTION 12
- The products of light-dependent reactions of photosynthesis are ____.
a. | used in light-independent reactions | |
b. | complex carbohydrates and proteins | |
c. | stored in the vacuoles of the cell | |
d. | oxygen and glucose | |
e. | used in the light-independent reactions and stored in the vacuoles of the cell |
5 points
QUESTION 13
- If a protein or molecule is taken up by the cell and must be digested, to which cellular structure is it sent?
a. | the mitochondria | |
b. | the lysosome | |
c. | the rough endoplasmic reticulum | |
d. | the smooth endoplasmic reticulum | |
e. | the Golgi body |
5 points
QUESTION 14
- The harvesting of energy from glucose to make ATP happens during ____.
a. | glycolysis | |
b. | photosynthesis | |
c. | cellular respiration | |
d. | fermentation | |
e. | chemosynthesis |
5 points
QUESTION 15
- When viewing a cell culture under a microscope, most cells would be in which phase of cell cycle?
a. | telophase | |
b. | interphase | |
c. | metaphase | |
d. | cytokinesis | |
e. | prophase |
5 points
QUESTION 16
- Each DNA strand serves as a _____during DNA synthesis.
a. | replicate | |
b. | substitute | |
c. | template | |
d. | source of nucleotides | |
e. | primer |
5 points
QUESTION 17
- The chemical reactions that cells use to acquire and use energy to live, grow, and reproduce are called ____.
a. | hydrolysis | |
b. | condensation | |
c. | phosphorylation | |
d. | metabolism | |
e. | oxidation |
5 points
QUESTION 18
- The structure of a DNA molecule is analogous to a _____.
a. | paper clip | |
b. | ladder | |
c. | fork | |
d. | rope | |
e. | coiled spring |
5 points
QUESTION 19
- Meiosis produces _____.
a. | sperm cells | |
b. | egg cells | |
c. | body cells | |
d. | sperm and egg cells | |
e. | sperm, egg, and body cells |
5 points
QUESTION 20
- A series of enzyme-mediated reactions by which cells build, remodel, or break down organic molecules is known as ____.
a. | energy carriers | |
b. | metabolic pathways | |
c. | the induced-fit model | |
d. | intermediary compounds | |
e. | activation |