Which of the following RNA sequences would complementary base pair with a DNA
sequence: AACGTAACG?
A. AACGUAACG
B. UUGCAUUGC
C. TTGCATTGC
Give this one a try later!
B. UUGCAUUGC
,Carnivorous plants often attract their prey using nectar or attractant odors, subdue
the prey with traps that close or sticky substances, and digest the prey by excreting
digestive enzymes. In carnivorous plants that develop pitcher leaves, digestive
enzymes are secreted into the bowl of the pitcher so that prey can be digested.
Which of the following is/are NOT likely to be true about these digestive enzymes?
A. The genes that code for these enzymes are present in all the cells in the plant,
including cells in the roots and flowers.
B. The ability to produce digestive enzymes likely gave early carnivorous plants a
selective advantage over plants without this ability.
C. Before the digestive enzymes can be expressed in the cells that line the bowl of
the pitcher, the DNA that codes for the enzymes must be replicated in these cells.
D. During pitcher plant evolution, some individuals were able to produce digestive
enzymes, whereas other members of the population were not able to produce these
enzymes.
E. A and D
Give this one a try later!
C. Before the digestive enzymes can be expressed in the cells that line the
bowl of the pitcher, the DNA that codes for the enzymes must be
replicated in these cells.
Which of the following is TRUE about these bioluminescent bacteria and
multicellularity?
A. Since these bacteria appear to communicate with one another and work together
to produce light, they should be classified as multicellular.
B. These bacteria exhibit differences in gene expression among cells, which means
that different cells perform different functions, so they should be classified as
multicellular.
C. These bacteria use the seawater as a way to move nutrients and signals between
cells, so they should be classified as multicellular.
D. While these bacteria appear to be able to communicate, they are not multicellular
because all the bacterial cells contain all the same genes.
E. None of the above.
, Give this one a try later!
E. None of the above.
In pea plants, height is controlled by gene T for which the tall allele (T) is dominant to
the short allele (t). Seed color is controlled by gene Y for which the yellow seed allele
(Y) is dominant to the green seed allele (y). If you cross two pea plants that are
heterozygous for both genes, what proportion of the offspring do you expect to be
tall plants with green seeds?
A. (½)*(½) = 1/4 or 4/16
B. (¾)*(½) = 3/8 or 6/16
C. (¾)*(¼) = 3/16
D. (½)*(¼) = 1/8 or 2/16
E. (¼)*(1) = 1/4 or 4/16
Give this one a try later!
C. (¾)*(¼) = 3/16
Some horses have enlarged leg muscles that allow them to run faster than other
horses. Enlarged leg muscles are dominant (L). A jockey owns a male horse with
enlarged leg muscles that he wants to use for breeding purposes. However, he wants
to be sure it has a genotype of LL. What is the genotype of the female he should mate
with this horse to definitively confirm its genotype? Why?
A. ll; any slow horses among offspring will confirm that the male's
genotype is LL
B. ll; any slow horses among offspring will confirm that the male's
genotype is Ll
C. LL; only fast horses will be born, confirming that the horse's genotype is
LL
D. Ll; no slow horses should be born if the male's genotype is Ll
E. Crossing to either ll or LL would definitively confirm the male horse's
genotype.
sequence: AACGTAACG?
A. AACGUAACG
B. UUGCAUUGC
C. TTGCATTGC
Give this one a try later!
B. UUGCAUUGC
,Carnivorous plants often attract their prey using nectar or attractant odors, subdue
the prey with traps that close or sticky substances, and digest the prey by excreting
digestive enzymes. In carnivorous plants that develop pitcher leaves, digestive
enzymes are secreted into the bowl of the pitcher so that prey can be digested.
Which of the following is/are NOT likely to be true about these digestive enzymes?
A. The genes that code for these enzymes are present in all the cells in the plant,
including cells in the roots and flowers.
B. The ability to produce digestive enzymes likely gave early carnivorous plants a
selective advantage over plants without this ability.
C. Before the digestive enzymes can be expressed in the cells that line the bowl of
the pitcher, the DNA that codes for the enzymes must be replicated in these cells.
D. During pitcher plant evolution, some individuals were able to produce digestive
enzymes, whereas other members of the population were not able to produce these
enzymes.
E. A and D
Give this one a try later!
C. Before the digestive enzymes can be expressed in the cells that line the
bowl of the pitcher, the DNA that codes for the enzymes must be
replicated in these cells.
Which of the following is TRUE about these bioluminescent bacteria and
multicellularity?
A. Since these bacteria appear to communicate with one another and work together
to produce light, they should be classified as multicellular.
B. These bacteria exhibit differences in gene expression among cells, which means
that different cells perform different functions, so they should be classified as
multicellular.
C. These bacteria use the seawater as a way to move nutrients and signals between
cells, so they should be classified as multicellular.
D. While these bacteria appear to be able to communicate, they are not multicellular
because all the bacterial cells contain all the same genes.
E. None of the above.
, Give this one a try later!
E. None of the above.
In pea plants, height is controlled by gene T for which the tall allele (T) is dominant to
the short allele (t). Seed color is controlled by gene Y for which the yellow seed allele
(Y) is dominant to the green seed allele (y). If you cross two pea plants that are
heterozygous for both genes, what proportion of the offspring do you expect to be
tall plants with green seeds?
A. (½)*(½) = 1/4 or 4/16
B. (¾)*(½) = 3/8 or 6/16
C. (¾)*(¼) = 3/16
D. (½)*(¼) = 1/8 or 2/16
E. (¼)*(1) = 1/4 or 4/16
Give this one a try later!
C. (¾)*(¼) = 3/16
Some horses have enlarged leg muscles that allow them to run faster than other
horses. Enlarged leg muscles are dominant (L). A jockey owns a male horse with
enlarged leg muscles that he wants to use for breeding purposes. However, he wants
to be sure it has a genotype of LL. What is the genotype of the female he should mate
with this horse to definitively confirm its genotype? Why?
A. ll; any slow horses among offspring will confirm that the male's
genotype is LL
B. ll; any slow horses among offspring will confirm that the male's
genotype is Ll
C. LL; only fast horses will be born, confirming that the horse's genotype is
LL
D. Ll; no slow horses should be born if the male's genotype is Ll
E. Crossing to either ll or LL would definitively confirm the male horse's
genotype.
