LIFE SCIENCE (238) | TOP SCORES MADE SIMPLE | TRUSTED
TEST SOLUTIONS!
Although one strand of daughter DNA forms continuously, one nucleotide at a time, the
other strand of daughter DNA forms discontinuously, in chunks called Okazaki
fragments. Answer: During DNA replication, the parent DNA helix splits into 2 separate
strands which pair with nucleotides to form the matching daughter helix of DNA.
Okazaki fragments are used during the pairing process. Which of the following is true of
Okazaki fragments?
an embryo that does not carry cystic fibrosis Answer: As reproductive technology has
advanced, many ethical dilemmas have arisen. Which of the following presents the
fewest ethical challenges?
an embryo that does not carry cystic fibrosis Answer: As reproductive technology has
advanced, many ethical dilemmas have arisen. Which of the following presents the
fewest ethical challenges?
allopatric speciation Answer: An earthquake takes place on a peninsula and splits up a
population of non-swimming armadillo. Half of the population is now isolated on an
island and the other half are living on the tip of the remaining peninsula.
Differences in gene expression result in cell differentiation. Answer: Which statement
regarding cellular differentiation during human embryonic development is true?
Target DNA sequences are recognized and then cut by restriction enzymes. Answer:
Which of the following is a step in gene cloning?
carries hormones throughout the body Answer: The cardiovascular system helps
regulate the growth and development of a mammal in what way?
All cells in the body have the same DNA because they started from the same cell.
Answer: Which of the following is true of the relationship between DNA and cell
differentiation?
1. methods used for collecting data 2. materials used in experiment 3. procedure used
for setting up the experiment Answer: During a laboratory experiment, students are
asked to keep a lab journal. Student journals will be evaluated based on their
understanding of inquiry-based scientific investigation. A student journal exhibiting
strong understanding should include which of the following?
1
APPHIA - Crafted with Care and Precision for Academic Excellence.
, MSDS Answer: Where could you find extensive safety information about a hazardous
chemical?
Detrimental characteristics caused by recessive alleles are more likely to remain in a
population than detrimental characteristics caused by dominant alleles. Answer: Which
of the following statements best explains the action of natural selection on the
phenotypes and genotypes in a population?
ivy growing up the side of a brick wall Answer: Which of the following is the best
example of thigmotropism in plants?
tropical rainforest Answer: Which of the following has the highest net primary
productivity?
Hydrogen bonds are essential to the structure of DNA. Answer: Which of the following
properties make hydrogen essential to the chemistry of life?
increasing genetic variation Answer: In which outcome does meiosis play a more
consequential role than mitosis?
the number of disks floating Answer: When plant cells carry out photosynthesis, they
produce oxygen gas. Disks can be cut from a plant leaf and placed in a syringe with a
solution of water and sodium bicarbonate. The syringe can then be engaged to remove
the air from the spaces in the leaf disks. This increases the leaf density and causes
them to sink. The disks begin to float as photosynthesis adds oxygen back to the
spaces in the leaves.
A student uses the above experiment to study the effect of light intensity on the rate of
photosynthesis. He places two control groups in the window and two experimental
groups on the opposite side of the room. He takes measurements each minute. In this
experiment, what is the dependent variable?
instinctual Answer: The monarch butterfly populations migrate to Central Mexico each
winter and return to North America and Canada each spring. What kind of response is
this?
A substitution mutation occurs, changing the amino acid sequence. Answer: Sickle cell
anemia is a condition in which red blood cells shrivel into a sickle shape, decreasing
their ability to carry oxygen. Which of the following best describes the most common
cause of sickle cell anemia?
Expose the plants to a number of dark hours that exceeds the critical photoperiod.
Answer: A commercial florist is growing short-day plants. Which of the following
methods would be the most effective for the florist to employ to ensure the most
blooms?
2
APPHIA - Crafted with Care and Precision for Academic Excellence.
TEST SOLUTIONS!
Although one strand of daughter DNA forms continuously, one nucleotide at a time, the
other strand of daughter DNA forms discontinuously, in chunks called Okazaki
fragments. Answer: During DNA replication, the parent DNA helix splits into 2 separate
strands which pair with nucleotides to form the matching daughter helix of DNA.
Okazaki fragments are used during the pairing process. Which of the following is true of
Okazaki fragments?
an embryo that does not carry cystic fibrosis Answer: As reproductive technology has
advanced, many ethical dilemmas have arisen. Which of the following presents the
fewest ethical challenges?
an embryo that does not carry cystic fibrosis Answer: As reproductive technology has
advanced, many ethical dilemmas have arisen. Which of the following presents the
fewest ethical challenges?
allopatric speciation Answer: An earthquake takes place on a peninsula and splits up a
population of non-swimming armadillo. Half of the population is now isolated on an
island and the other half are living on the tip of the remaining peninsula.
Differences in gene expression result in cell differentiation. Answer: Which statement
regarding cellular differentiation during human embryonic development is true?
Target DNA sequences are recognized and then cut by restriction enzymes. Answer:
Which of the following is a step in gene cloning?
carries hormones throughout the body Answer: The cardiovascular system helps
regulate the growth and development of a mammal in what way?
All cells in the body have the same DNA because they started from the same cell.
Answer: Which of the following is true of the relationship between DNA and cell
differentiation?
1. methods used for collecting data 2. materials used in experiment 3. procedure used
for setting up the experiment Answer: During a laboratory experiment, students are
asked to keep a lab journal. Student journals will be evaluated based on their
understanding of inquiry-based scientific investigation. A student journal exhibiting
strong understanding should include which of the following?
1
APPHIA - Crafted with Care and Precision for Academic Excellence.
, MSDS Answer: Where could you find extensive safety information about a hazardous
chemical?
Detrimental characteristics caused by recessive alleles are more likely to remain in a
population than detrimental characteristics caused by dominant alleles. Answer: Which
of the following statements best explains the action of natural selection on the
phenotypes and genotypes in a population?
ivy growing up the side of a brick wall Answer: Which of the following is the best
example of thigmotropism in plants?
tropical rainforest Answer: Which of the following has the highest net primary
productivity?
Hydrogen bonds are essential to the structure of DNA. Answer: Which of the following
properties make hydrogen essential to the chemistry of life?
increasing genetic variation Answer: In which outcome does meiosis play a more
consequential role than mitosis?
the number of disks floating Answer: When plant cells carry out photosynthesis, they
produce oxygen gas. Disks can be cut from a plant leaf and placed in a syringe with a
solution of water and sodium bicarbonate. The syringe can then be engaged to remove
the air from the spaces in the leaf disks. This increases the leaf density and causes
them to sink. The disks begin to float as photosynthesis adds oxygen back to the
spaces in the leaves.
A student uses the above experiment to study the effect of light intensity on the rate of
photosynthesis. He places two control groups in the window and two experimental
groups on the opposite side of the room. He takes measurements each minute. In this
experiment, what is the dependent variable?
instinctual Answer: The monarch butterfly populations migrate to Central Mexico each
winter and return to North America and Canada each spring. What kind of response is
this?
A substitution mutation occurs, changing the amino acid sequence. Answer: Sickle cell
anemia is a condition in which red blood cells shrivel into a sickle shape, decreasing
their ability to carry oxygen. Which of the following best describes the most common
cause of sickle cell anemia?
Expose the plants to a number of dark hours that exceeds the critical photoperiod.
Answer: A commercial florist is growing short-day plants. Which of the following
methods would be the most effective for the florist to employ to ensure the most
blooms?
2
APPHIA - Crafted with Care and Precision for Academic Excellence.
