Bio 1. Quiz on Ch 5,6,7,8,
Name ____________________________
Remote ___
1. Proteins which act as catalysts of chemical
reactions [in cells] are called:
a. enzymes.
b. coenzymes.
c. reaction cofactors.
d. substrates.
e. reactants
2.Chlorophyll and carotenoids are found at the
a. reaction center of photosystem II
b. matrix of the mitochondria
c. center of the thylakoid
d. center of the Electron Transport Chain
e. none of the above.
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.The main function of the rough endoplasmic
reticulum is:
a. synthesis and secretion of proteins
b. aid the nucleus in cell division
c. synthesis , secretion and storage of cell
membrane lipids
d. all of the above
e. none of the above
5. The eukaryotic organelle found in mammalian
cells which produces most of the energy for life is
the:
a.
chloroplast.
b.
lysosome.
c.
centriole.
d.
nucleolus.
e.
mitochondrion
6. 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
7.Endocytosis is an example of:
a. facilitated diffusion.
b. facilitated transport.
c. active transport.
d. Water passage.
e. coupled transport.
8. The second law of thermodynamics states that
for chemical reactions:
a. entropy always increases.
b. entropy always decreases.
c. free energy always increases.
d. free energy always decreases.
e. anabolic reactions must always be paired with
catabolic reactions.
9. Ribosomes are the site of synthesis of
a. DNA.
b RNA.
c proteins.
d nucleoli.
e glucose
10. What is the difference between “free” and
“attached” ribosomes?
a. free ribosomes are in the cytoplasm while
attached ribosomes are in the endoplasmic
reticulum
b. free ribosomes produce proteins that are
exported from the cell while attached ribosomes
produce proteins for the cytoplasms
c. free ribosomes produce proteins that remain in
the cytoplasm while attached ribosomes produce
proteins for the mitochondria and chloroplasts.
d. a and b
e. a and c