1) which european species is believed to have evolved from homo ergaster?
a. homo heidelbergensis
b. homo erectus
c. homo floresiensis
d. homo sapiens
e. australopithecus africanus
2) which of the following statements concerning ribosomes are true?
a. several ribosomes are often attached to and translating the same mrna.
b. ribosomes join amino acids to form a polypeptide.
c. ribosomes have a binding site for mrna and three binding sites for trna molecules.
d. no protein synthesis within a cell would occur without ribosomes.
e. all of the above statements are true.
incorrect
3) which of these white blood cells are phagocytic?
a. lymphocytes
b. neutrophils
c. macrophages
d. both neutrophils and macrophages
e. both lymphocytes and macrophages
4) what is the correct order of steps of morphogenesis in drosophila melanogaster.
a. gap genes divide the body into broad regions
b. establishment of anterior / posterior axes
c. homeotic genes determine which body parts arise from each region
d. pair-rule genes are activated in order to develop a preliminary segmentation pattern
a. b – a – d – c
b. a – d – c – b
c. b – a – c – d
d. a – b – c – d
e. a – d – b – c
5) of the following, which process will not denature a protein?
a. heating to temperatures above 100 c
b. addition of strong acids or strong bases
c. phosphorylation
d. addition of distilled water
6) indoleacetic acid (iaa) is the most commonly occurring form of which of the
following plant hormones?
a. abscisic acid
b. ethylene
c. cytokinin
d. auxin
e. gibberellin
7) roundworms and arthropods are both ecdysozoans. this means they
a. have a trochophore larvae.
b. have a body cavity that is completely lined with mesoderm.
c. have the anus arise at or near the blastopore.
d. periodically shed their outer covering.
e. none of the above are true.
8) one classic definition of life is “a self-replicating molecular assemblage.” however,
clay particles (in clay soil) contain layered aluminum and iron compounds that
determine the pattern of the adjacent layers of sediment. this is technically a
self-replicating molecular assemblage.
a. therefore, it is living.
b. it is not living because it cannot think.
c. it is not living because there were no molecular changes (or chemistry) involved.
d. it is not living because there is no carbon involved; otherwise, such duplication
would be living.
e. it is not living because it is a simple repetitive process without the ability to evolve or
respond to the environment.
9) during the conversion of glucose into a free form of energy only a small percentage
is converted into useable atp. what is the rest of the energy converted into?
a. heat
b. co2
c. h2o
d. co-
10) which of the following statements about parasitism is not true?
a. the host is generally larger than the parasite.
b. an efficient parasite usually kills its host.
c. smaller parasites often live as endoparasites within the body of the host.
d. ectoparasites are attached to the outside of the host’s body by specialized organs.
e. some organisms and all viruses are obligate parasites and must live inside a host.