1) all of the biochemical pathways in a cell constitute
a. coupling reactions.
b. free energy.
c. endergonic reactions only.
d. exergonic reactions only.
e. metabolism.
2) the epidermis consists of
a. stratified squamous epithelial cells.
b. collagen fibers.
c. elastic fibers.
d. adipose tissue.
3) chyme is produced in the
a. small intestine.
b. stomach.
c. esophagus.
d. large intestine.
4) all of the following are examples of natural selection except
a. the distribution of dark and light colored peppered moths in britain.
b. a rise in bacterial resistance to antibiotics.
c. the reduction in beak length of scarlet honeycreepers when they changed food
sources.
d. the 150 breeds of dogs developed from ancestral wolves.
e. two of the above are not examples of natural selection.
5) the mass numberrefers to the number of ______ & ______ within an element.
a. protons & neutrons
b. protons & electrons
c. electrons & neutrons
d. protons & molecules
e. electrons & atoms
6) _____ is the interaction between two species as both attempt to use the same
environmental resources.
a. competition.
b. a community.
c. an ecosystem.
d. predation.
e. symbiosis.
7) if cap is absent from a cell what are the potential consequences?
a. the individual cannot activate the catabolism of various other metabolites in the
absence of glucose.
b. the individual does not have a backup system for survival when glucose is absent.
c. the individual will most likely die because they cannot metabolize enough energy if
glucose is absent.
d. all of these are consequences of the absence of cap.
8) which description best fits the term xenotransplantation?
a. the use of animal organs in human transplant patients.
b. the use of human organs in animal transplants.
c. the use of animal dna during genetic modification.
d. none of these descriptions fit xenotransplantation.
9) ___ will take calcium from the blood, whereas ___ will deposit calcium into the
blood.
a. osteoclasts; osteoblasts
b. osteocytes; osteoclasts
c. osteocytes; osteoblasts
d. osteoblasts, osteocytes
e. osteoblasts; osteoclasts
10) which statement is not true about homologues in meiosis i?
a. homologous chromosomes pair to form a tetrad.
b. homologous chromosomes separate and go to different daughter cells.
c. each homologue’s centromere splits to form two chromosomes.
d. homologues exchange genetic material between non-sister chromatids.
e. homologues interact with the spindle as if they were one chromosome.
11) what are the potential consequencesof an individual who suffers from a genetic
disorder that prohibits them from properly forming microtubules ?
a. their cells will not be able to maintain the normal cellular shape
b. the cells may not be able to divide correctly during cellular division
c. the cilia located on the respiratory cells may have a limited function
d. all of the above are possible consequences of improperly formed microtubules
12) which of the following is not a human induced cause of extinction?
a. exotic species
b. habitat loss
c. eutrophication
d. ozone depletion
e. outcompeted by another species in the same ecosystem
13) which of the following is not one of the three steps (processes) involved in urine
formation?
a. countercurrent mechanism
b. tubular reabsorption
c. glomerular filtration
d. tubular secretion
14) a treeless region with little rainfall in the far north is the
a. grassland.
b. tundra.
c. taiga.
d. chaparral.
e. desert.
15) reproductive isolation
a. means there is no gene flow between two groups of organisms (species).
b. is necessary for species to remain separate.
c. is maintained by certain prezygotic and postzygotic barriers.
d. all of the choices are correct.
e. none of the choices are correct.