Week 5 Quiz

QUESTION 1

  1. The conversion of solar energy into chemical energy occurs during ____.
a. glycolysis
b. photosynthesis
c. respiration
d. fermentation
e. chemosynthesis

5 points   

QUESTION 2

  1. Which base(s) pair(s) with cytosine?
a. adenosine
b. cytosine
c. thymine
d. guanine
e. cytosine and thymine

5 points   

QUESTION 3

  1. 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 4

  1. Each DNA strand has a backbone that consists of alternating _____.​
a. ​amino acids
b. ​nitrogen-containing bases
c. ​hydrogen bonds
d. ​sugar and phosphate molecules
e. ​types of sugars

5 points   

QUESTION 5

  1. Which process is responsible for the conversion of DNA information into messenger RNA?​
a. ​replication
b. ​transcription
c. ​duplication
d. ​translation
e. ​synthesis

5 points   

QUESTION 6

  1. During aerobic respiration, the electron acceptor at the end of the electron transfer chain is ____.
a. NADH
b. oxygen
c. FADH2
d. glucose
e. acetyl-CoA

5 points   

QUESTION 7

  1. ​Enzymes speed up a chemical reaction by ____.
a. ​lowering the activation energy
b. ​lowering the optimal pH
c. ​increasing the reaction temperature
d. ​increasing the energy in the system
e. ​increasing the activation energy

5 points   

QUESTION 8

  1. Pigments are ____.
a. inorganic molecules that absorb all light
b. organic molecules that absorb all light
c. inorganic molecules that absorb specific wavelengths of light
d. organic molecules that absorb specific wavelengths of light
e. inorganic molecules that reflect specific wavelengths of light

5 points   

QUESTION 9

  1. Which two atoms are found in all organic compounds?​
a. carbon and hydrogen​
b. ​carbon and oxygen
c. ​oxygen and hydrogen
d. ​carbon and phosphorous
e. ​oxygen and sulfur

5 points   

QUESTION 10

  1. 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 11

  1. Which bond is weakest?​
a. ionic​
b. ​double covalent
c. ​polar covalent
d. ​nonpolar covalent
e. ​hydrogen

5 points   

QUESTION 12

  1. Which property of water molecules is responsible for movement of water from roots to leaves in a plant?​
a. hydrophobicity​
b. ​temperature stability
c. ​fusion
d. ​solvent polarity
e. ​cohesion

5 points   

QUESTION 13

  1. A(n) ____ is a protein monomer.​
a. nucleotide​
b. ​monosaccharide
c. ​simple sugar
d. ​amino acid
e. ​ribose

5 points   

QUESTION 14

  1. A ribosome contains _____.​
a. ​RNA only
b. ​DNA only
c. ​proteins only
d. ​RNA and proteins
e. ​RNA, DNA, and proteins

5 points   

QUESTION 15

  1. In a given strand of DNA, complementary bases are connected to each other by _____.​
a. ​ionic bonds
b. ​polar covalent bonds
c. ​hydrogen bonds
d. ​peptide bonds
e. ​nonpolar covalent bonds

5 points   

QUESTION 16

  1. 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 17

  1. 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 18

  1. After meiosis, resulting daughter cells will contain _____.​
a. ​the same number of chromosomes as the parent cell
b. ​half the number of chromosomes than the parent cell carries
c. ​twice the number of chromosomes than the parent cell carries
d. ​three times the number of chromosomes than the parent cell carries
e. ​four times the number of chromosomes than the parent cell carries

5 points   

QUESTION 19

  1. All organisms fit into one of two categories: ____ and  ____.
a. consumers and decomposers
b. producers and decomposers
c. producers and consumers
d. scavengers and detritivores
e. consumers and scavengers

5 points   

QUESTION 20

  1. Glycolysis converts glucose into ____.
a. pigments
b. organic compounds
c. proteins
d. electrons and protons
e. heat energy

 

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