1) which biome is characterized by rainfall under 25 cm/year, hot days, cold nights, and
quickly blooming plants?
a. grasslands
b. temperate deciduous forest
c. temperate deserts
d. taiga
e. tundra
2) what type of selection is occurring in a population if the distribution graph shifts
from the left end of the spectrum to the far right end?
a. directional
b. stabilizing
c. disruptive
d. populations do not undergo selection, they are fixed.
correct
3) which species is believed to have been the first ones to develop stone tool
technology?
a. homo erectus.
b. homo habilis.
c. cro-magnon man.
d. neanderthal man.
4) what is the correct order of biome distribution starting at the lowest elevation and
moving to higher elevations?
a. tropical forest – deciduous forest – montane coniferous forest – alpine tundra
b. tropical forest – deciduous forest – desert – alpine tundra
c. deciduous forest – montane coniferous forest – tropical forest – alpine tundra
d. tropical forest – grasslands – montane coniferous forest – deciduous forest
e. montane coniferous forest – alpine tundra – temperate deciduous forest – savanna
while eating a container of yogurt, you have to leave, so you store the yogurt in the
refrigerator. a day later you return and find the surface of the yogurt is no longer smooth
but has broken into several liquified products. you correctly guess that enzymes from
your saliva, via the spoon, have continued digesting the yogurt in your absence. what
will happen over time?
a. the reaction will soon stop because the amount of saliva is small, and you would have
to add more saliva to continue the degradation.
b. the reaction will continue, since the enzyme is not denatured by the reaction.
c. the reaction will continue until half is digested and then stop because the reaction
between substrate and product will be balanced.
d. absolutely no degradation of the yogurt will occur naturally unless in the presence of
this enzyme.5) in
6) which of the following steps would not lead to variation of genetic material?
a. crossing over of homologous chromosomes
b. crossing over of sister chromatids
c. the random alignment of the chromosomes during metaphase i
d. the combination of sperm and egg genes
7) which of the following is not a physiological change related to photoperiodism?
a. seed germination
b. root branching
c. breaking bud dormancy
d. some flowering
e. onset of senescence
8) which of the following scenarios would most likely lead to adaptive radiation in a
species?
a. an isolated patch of rainforest in the country of belize is cut down. this changes the
abiotic conditions that the bird that live in this habitat will be facing if they are to
survive.
b. a mutation occurred in a population of howler monkeys that increases their fitness.
c. females start mating more frequently with the males in the group that sing differently
than the rest of the group.
d. adaptive radiation doesn’t occur in populations since species are fixed.
9) which of the following pairs of zones are comparable?
a. epipelagic – benthic
b. mesopelagic – profundal
c. littoral – bathypelagic
d. mesopelagic – epipelagic
e. epipelagic – limnetic
10) select the correct sequence for mineral uptake in plants.
a.the root cells will initially uptake the minerals.
b.the upwards movement of water will carry the minerals towards the leaves.
c. some of the minerals are deposited in the leaf cells.
d. the minerals move into the xylem of the vascular tissue.
e. some of the minerals leave the xylem and enter the various tissues that require them.
a. a – d – b – e – c
b. a – b – d – e – c
c. c- a – d – b – e
d. d – b – e – a – c
e. d – b – c – a – e
11) which of the following groups represent the current domains of life?
a. bacteria, eukarya, archaea
b. bacteria, eukarya, monera
c. bacteria, eukarya, archae
d. eubacteria, animalia, archaea
12) a disease in which the alveoli are distended and their walls damaged so that surface
areas for gas exchange is reduced is
a. bronchitis.
b. emphysema.
c. pulmonary tuberculosis.
d. pneumonia.