QUESTIONS AND CORRECT VERIFIED
ANSWERS); ALREADY GRADED A
As a tree grows from a seedling to a mature adult, which of the
following best described the positions of the primary xylem and
phloem with respect to each other?
A. They both remain at the center of the stem
B. They are both displaced to the outer edge, flanking the
vascular cambium
C. They are both displaced to the outer edge, just under the
cork, while the primary phloem remains in the center of the
stem
D. The primary phloem ends up near the outer edge, just under
the cork, while the primary xylem remains in the center of the
stem
E. The primary xylem and phloem trade places during growth -
correct answer- D
Based on our first GAE, which of the following sources of energy
is best- suited to the needs of living things?
A. Light
B. Lightning
,C. Heat
D. Wind
E. Nuclear energy? - correct answer- Light
Both Daphnia crustaceans and Cnemidophorus lizards reproduce
via parthenogensis. Which of the following states is true?
A. Daphnia reproduce parthenogenically during the entire year
B. Daphnia only engage in parthenogensis in colder months of
the year
C. Cnemidophorous alternate between sexual and
parthenogenic reproduction, depending on the season
D. Cnemidophorus can only use parthenogensis, because it is a
hybrid of two species with different chromosome number
E. Daphnia have outcrossing sex through a single hermaphrodite
sex that swaps sperm - correct answer- D.
Cnemidophorus can only use parthenogensis, because it is a
hybrid of two species with different chromosome number
Carl Woese used rRNA sequences to build the first universal tree
of life. Which of the following is an important way that our
understanding of time tree has changed since his first
presentation?
, A. Viruses have been added to show their placement near
bacteria on the tree
B. Eukaryotes have been shown to be the oldest form of all life
C. Newly discovered archaea show that eukaryotes emerged
within them
D. Bacteria and archaea have been found to be prokaryotes
E. Most methanogens are actually eukaryotes - correct
answer- C. Newly discovered archaea show that eukaryotes
emerged from within them
Comparing the ATP your body produces from substrate- level
phosphorylation (SLP) to that produced via oxidative
phosphorylation (ETC and ATP synthase), which of the following
is correct?
A. Both oxidative phosphorylation and SLP produce the same
amount of ATP
B. SLP produces far more ATP than oxidative phosphorylation
C. Oxidative phosphorylation produces far more ATP than SLP
D. SLP relies on a proton gradient across a membrane
E. Oxidative phosphorylation is particularly important in
fermentation (no oxygen present) - correct answer- C.
Oxidative phosphorylation produces far more ATP than SLP