Bio 1. Quiz on Ch 5,6,7,8,
Name
____________________________
Remote ___
1. Which of the following processes does
a cell use to take up molecules against
their concentration gradient?
a. simple diffusion
b. facilitated diffusion
c. active transport
d. endocytosis
e. Both the c and d are correct.
2. Proteins which act as catalysts of
chemical reactions [in cells] are called:
a. enzymes.
b. coenzymes.
c. reaction cofactors.
d. substrates.
e. reactants
3. A final product of a metabolic pathway
inhibits an early enzyme in the pathway.
This is likely to be an example of:
a. competitive inhibition.
b. feedback inhibition.
c. cooperativity.
d. energy coupling.
e. a second messenger.
4. Choose the substance that will diffuse
most rapidly across the plasma
membrane.
a. amino acid
b. sodium ion
c. small polar molecule
d. oxygen
5.Chlorophyll and carotenoids are found
at the
a. Thylakoid membrane (reaction center)
b. matrix of the mitochondria
c. center of the thylakoid
d. center of the Electron Transport Chain
e. none of the above.
6. In endergonic reactions, __________.
a. the reactants have more potential
energy than the products
b. energy is released
c. a net input of energy is not required
d. all of the above
e. none of the above
7. In most land plants, photosynthesis
occurs in cells of the __________ of the
leaves, because these cells contain the
largest numbers of chloroplasts.a.
epidermis
b. stomata
c. cuticle
d. mesophyll
e. vascular bundles
8. The light-independent reactions…:
a. can only occur only in the dark
b. can occur independently of light, as
long as ATP and NADPH are available.
c. depend only on water and carbon
dioxide availability
d. follow a day/night cycle, regardless of
actual light
e. none of the above
9. The term carbon fixation refers to
__________.
a. the loss of carbon during glucose
synthesis
b. the incorporation of atmospheric
carbon dioxide into a larger organic
molecule
c. the synthesis of glyceraldehyde-3phosphate
d. the regeneration of ribulose
bisphosphate
10. In eukaryotic cells, glycolysis occurs
in the __________, and cellular
respiration occurs in the __________.
a. mitochondria, cytoplasm
b. cytoplasm, mitochondria
c. cytoplasm, chloroplasts
d. chloroplasts, mitochondria
11. In the absence of oxygen, pyruvate
acts as an electron acceptor in a process
called ___________________.
a. hydrolysis
b. fermentation
c. oxidative phosphorylation
d. glycolysis