BIOLOGY
EXAM
2023
, 1) The biggest abiotic reservoir for carbon is:
a) Fossil fuels
b) Soil
c) Decaying organic debris 7) Assume now that widow’s peaks are a dominant trait
d) The atmosphere and Joe marries Jane, who is also heterozygous. What
e) Plants is the percent chance that Joe and Jane’s children will
have widow’s peaks?
a) 0%
2) Which of the following is not a requirement for b) 25%
natural selection? c) 50%
a) differential reproductive success d) 75%
b) overproduction of offspring e) 100%
c) genetic variation
d) catastrophic events
e) inheritance
8) Allopatric speciation could be caused by:
a) a volcano or other geographic barrier
3) If adenine makes up 30% of the bases in a DNA b) salmon that breed in the same stream but at
double helix, what percentage of the bases are different times
guanine? c) gall flies that breed in the same field, but on
a) 80% different gall plants with different predators
b) 60% d) an error in cell division of a plant that causes it
c) 40% to be reproductively incompatible with
d) 20% neighboring plants
e) 30% e) none of the above
4) DNA differs from RNA because: 9) The by-products of cellular respiration are:
a) DNA has a sugar-phosphate backbone and a) Glucose and oxygen
RNA has a nucleotide phosphate backbone b) ADP and ATP
b) DNA has ribose sugar and RNA c) Carbon dioxide and water
has deoxyribose sugar d) ATP and glucose
c) DNA has guanine and RNA has adenine e) A phosphate group and water
d) DNA has thymine and RNA has uracil
e) DNA is single stranded and RNA is double 10) The principle known as ‘Conservation of Energy’
stranded states that:
a) Energy is either created or destroyed
b) Energy can neither be created nor destroyed
5) What is the #1 reason why species go extinct? c) 25% use of alternative energy sources must be
a) habitat loss achieved by 2013
b) introduced species d) Kinetic energy is the product of motion
c) disease e) Energy cycles and chemicals flow
d) overhunting
e) pollution 11) Which of the following would not be a potential
result of increasing temperature in an aquatic
biosystem?
Joe is heterozygous for a widow’s peak and has the a) Reduce available oxygen
genotype Ww. Use this information to answer questions b) Increase the rate of evaporation
5 and 6. c) Increase the metabolism of phytoplankton
d) Change in the community composition
6) The alleles represented by letters W and w are: e) Reduce salinity in the system
a) on the X and Y chromosomes
b) both dominant
c) on homologous chromosomes 12) Which of the following is/are true of cellular
d) both present in all Joe’s sperm cells respiration?
e) on the same chromosomes, but far apart a) Cells use oxygen to help harvest the energy
potential of organic food molecules
b) Light generation from cellular metabolism
accounts for about 60% of the energy released
EXAM
2023
, 1) The biggest abiotic reservoir for carbon is:
a) Fossil fuels
b) Soil
c) Decaying organic debris 7) Assume now that widow’s peaks are a dominant trait
d) The atmosphere and Joe marries Jane, who is also heterozygous. What
e) Plants is the percent chance that Joe and Jane’s children will
have widow’s peaks?
a) 0%
2) Which of the following is not a requirement for b) 25%
natural selection? c) 50%
a) differential reproductive success d) 75%
b) overproduction of offspring e) 100%
c) genetic variation
d) catastrophic events
e) inheritance
8) Allopatric speciation could be caused by:
a) a volcano or other geographic barrier
3) If adenine makes up 30% of the bases in a DNA b) salmon that breed in the same stream but at
double helix, what percentage of the bases are different times
guanine? c) gall flies that breed in the same field, but on
a) 80% different gall plants with different predators
b) 60% d) an error in cell division of a plant that causes it
c) 40% to be reproductively incompatible with
d) 20% neighboring plants
e) 30% e) none of the above
4) DNA differs from RNA because: 9) The by-products of cellular respiration are:
a) DNA has a sugar-phosphate backbone and a) Glucose and oxygen
RNA has a nucleotide phosphate backbone b) ADP and ATP
b) DNA has ribose sugar and RNA c) Carbon dioxide and water
has deoxyribose sugar d) ATP and glucose
c) DNA has guanine and RNA has adenine e) A phosphate group and water
d) DNA has thymine and RNA has uracil
e) DNA is single stranded and RNA is double 10) The principle known as ‘Conservation of Energy’
stranded states that:
a) Energy is either created or destroyed
b) Energy can neither be created nor destroyed
5) What is the #1 reason why species go extinct? c) 25% use of alternative energy sources must be
a) habitat loss achieved by 2013
b) introduced species d) Kinetic energy is the product of motion
c) disease e) Energy cycles and chemicals flow
d) overhunting
e) pollution 11) Which of the following would not be a potential
result of increasing temperature in an aquatic
biosystem?
Joe is heterozygous for a widow’s peak and has the a) Reduce available oxygen
genotype Ww. Use this information to answer questions b) Increase the rate of evaporation
5 and 6. c) Increase the metabolism of phytoplankton
d) Change in the community composition
6) The alleles represented by letters W and w are: e) Reduce salinity in the system
a) on the X and Y chromosomes
b) both dominant
c) on homologous chromosomes 12) Which of the following is/are true of cellular
d) both present in all Joe’s sperm cells respiration?
e) on the same chromosomes, but far apart a) Cells use oxygen to help harvest the energy
potential of organic food molecules
b) Light generation from cellular metabolism
accounts for about 60% of the energy released
