BIOL 1104 Exam 1 Questions With
Verified Answers
\.t or f: you will take every exam twice in this class. - Answer- true
\.homeostasis refers to the relatively _____ state inside the body of an animal. - Answer-
stable
\.evolution is the _____ in allele frequencies from one generation to the next. - Answer-
change
\.in pea plants, purple flowers (P) are dominant to white (p), and yellow peas (Y) are dominant
to green (y). with two independent genes each having two alleles, how few squares would you
need to make a Punnett square analysis of a cross between PPYY and PPYy plants? (how many
possible genotypes result?) - Answer- 2
\.Mendel's experiment with pea plants (Pisum sativum) convinced him that an individual plant
carried how many copies of each gene that affected a discontinuous trait (such as flower color)?
- Answer- 2
\.Mutation is largely a ____ process, whereas _____ is a directed, non-random process. -
Answer- random/ natural selection
\.t/f: a reason we study and compare populations of a species is to understand how traits very
within their environment. - Answer- true
,\.adaptation - Answer- the outcome of differential survival and reproduction over
generations
\.acclimation - Answer- a response in an individual (either physical, physiological, behavioral,
etc.) to changing environmental conditions
\.when considering the value of information from any source, one should consider... - Answer-
the currency, relevance, authority, accuracy, and purpose of the information
\.t/f: the ABO blood group system in humans is a great example of multiple alleles at a single
locus. Threes alleles exist at this locus: A,B, and O. after sexual reproduction, human offspring
have exactly two of these alleles at the locus. - Answer- true
\.carbon fixation - Answer- the process by which environmental carbon dioxide is converted
to organic molecules
\.endosymbotic theory - Answer- theory that eukaryotic cells formed from a symbiosis
among several different prokaryotic organisms
\.which wavelengths of light does the pigment Chlorophyl a best absorb? - Answer- red and
blue
\.what was one of the more unexpected results from the scientific article we read on Tigriopus
californicus (Wallace et. al. 2014)? - Answer- a small percentage of individuals from the two
southern populations survived and recovered from freezing within 24 hours.
\.what important role, in regard to transpiration, does the plant hormone abscisic acid (ABA)
have? - Answer- closure of stomata
, \.what are the products of the light reactions in photosynthesis? - Answer- oxygen gas, ATP,
and NADPH
\.what are measurements used to detect plant stress? - Answer- leaf water content,
carotenoid level, and chlorophyll level
\.osmoregulation - Answer- the process in which diffusion gradients are necessary to move
ions and wastes out of the body in kidneys in vertebrates
\.nephridia - Answer- osmoregulation in invertebrates
\.from the copepods paper, how would you expect copepods from cold, northern populations to
complete relative to copepods from warm, southern populations if they were abundantly
introduced into the same tidal pool? - Answer- relative performance of each "type" would
depend on the thermal conditions of the tidal pool into which they were introduced
\.a mature maple tree can have a mass of many tons, yet it starts from a seed that weighs less
than 1 gram. what contributes most to this huge increase in biomass? - Answer-
incorporation of CO2 gas from atmosphere into molecules by leaves
\.in photosynthesis, light energy directly... - Answer- excites electrons
\.t/f: photosynthesis is an anabolic process in which glucose if formed, respiration is a catabolic
process in which glucose is broken down. - Answer- true
\.since human population size continues to grow, what effect does that have on the R value?
(pos., neg., or = to 1) - Answer- positive
Verified Answers
\.t or f: you will take every exam twice in this class. - Answer- true
\.homeostasis refers to the relatively _____ state inside the body of an animal. - Answer-
stable
\.evolution is the _____ in allele frequencies from one generation to the next. - Answer-
change
\.in pea plants, purple flowers (P) are dominant to white (p), and yellow peas (Y) are dominant
to green (y). with two independent genes each having two alleles, how few squares would you
need to make a Punnett square analysis of a cross between PPYY and PPYy plants? (how many
possible genotypes result?) - Answer- 2
\.Mendel's experiment with pea plants (Pisum sativum) convinced him that an individual plant
carried how many copies of each gene that affected a discontinuous trait (such as flower color)?
- Answer- 2
\.Mutation is largely a ____ process, whereas _____ is a directed, non-random process. -
Answer- random/ natural selection
\.t/f: a reason we study and compare populations of a species is to understand how traits very
within their environment. - Answer- true
,\.adaptation - Answer- the outcome of differential survival and reproduction over
generations
\.acclimation - Answer- a response in an individual (either physical, physiological, behavioral,
etc.) to changing environmental conditions
\.when considering the value of information from any source, one should consider... - Answer-
the currency, relevance, authority, accuracy, and purpose of the information
\.t/f: the ABO blood group system in humans is a great example of multiple alleles at a single
locus. Threes alleles exist at this locus: A,B, and O. after sexual reproduction, human offspring
have exactly two of these alleles at the locus. - Answer- true
\.carbon fixation - Answer- the process by which environmental carbon dioxide is converted
to organic molecules
\.endosymbotic theory - Answer- theory that eukaryotic cells formed from a symbiosis
among several different prokaryotic organisms
\.which wavelengths of light does the pigment Chlorophyl a best absorb? - Answer- red and
blue
\.what was one of the more unexpected results from the scientific article we read on Tigriopus
californicus (Wallace et. al. 2014)? - Answer- a small percentage of individuals from the two
southern populations survived and recovered from freezing within 24 hours.
\.what important role, in regard to transpiration, does the plant hormone abscisic acid (ABA)
have? - Answer- closure of stomata
, \.what are the products of the light reactions in photosynthesis? - Answer- oxygen gas, ATP,
and NADPH
\.what are measurements used to detect plant stress? - Answer- leaf water content,
carotenoid level, and chlorophyll level
\.osmoregulation - Answer- the process in which diffusion gradients are necessary to move
ions and wastes out of the body in kidneys in vertebrates
\.nephridia - Answer- osmoregulation in invertebrates
\.from the copepods paper, how would you expect copepods from cold, northern populations to
complete relative to copepods from warm, southern populations if they were abundantly
introduced into the same tidal pool? - Answer- relative performance of each "type" would
depend on the thermal conditions of the tidal pool into which they were introduced
\.a mature maple tree can have a mass of many tons, yet it starts from a seed that weighs less
than 1 gram. what contributes most to this huge increase in biomass? - Answer-
incorporation of CO2 gas from atmosphere into molecules by leaves
\.in photosynthesis, light energy directly... - Answer- excites electrons
\.t/f: photosynthesis is an anabolic process in which glucose if formed, respiration is a catabolic
process in which glucose is broken down. - Answer- true
\.since human population size continues to grow, what effect does that have on the R value?
(pos., neg., or = to 1) - Answer- positive
