In a food web, which organism consumes dead and decaying matter?
Decomposer
100
Fructose, sucrose, and starch are all examples of:
Carbohydrates
100
Observable traits and characteristics of an individual
Phenotype
100
What term describes the maintenance of a steady internal state in the body?
Homeostasis
100
Which of the following organisms are
most closely related?
A. Asterias rubens and Asterias forbesi
B. Bubulcus ibis and Xenicibis xympithecus
C. Ophiderma salamandra and Salamandra algira
D. Ceanothus americanus and Lethocerus americanus
A. Asterias rubens and Asterias forbesi
200
Heterotrophs that consume meat is called ________.
Carnivores
200
In an eukaryotic cell, what are synthesized by ribosomes?
A. Carbohydrates
B. Lipids
C. Nucleic acids
D. Proteins
D. Proteins
200
Horses have 64 chromosomes. How many chromosomes should be in an egg cell of a female horse?
32 chromosomes
200
Which of the following is the best
example of the human body maintaining
homeostasis?
A. The heart beats using cardiac muscle.
B. The breathing rate increases during exercise.
C. The nose and ears contain cartilage for flexibility.
B. The breathing rate increases during exercise.
200
Fossils typically provide evidence for evolution because
A. They show patterns of biological change.
B. They exist in all types of rocks.
C. They supply good samples of RNA.
A. They show patterns of biological change.
300
Which of the following best describes
the producers in a terrestrial food web?
A. They are not affected by decomposers.
B. They convert solar energy to
chemical energy.
C. They obtain all their nutrients and
energy from consumers.
B. They convert solar energy to
chemical energy.
300
Which process removes oxygen from the atmosphere?
Respiration
300
A nucleotide is missing in a replicated DNA strand. This is an example of a __________.
Mutation
300
A dog gives birth to five puppies. What percentage of its chromosomes does each puppy share with the mother?
50%
300
A scientist observes two butterflies with similar wing patterns. Which of the following observations would best show that the two butterflies belong to the same species?
A. The butterflies share a habitat.
B. The butterflies pollinate the same flowers.
C. The butterflies mate with each other
and produce fertile offspring.
C. The butterflies mate with each other
and produce fertile offspring.
400
Within a prey population, which of the
following is most immediately affected
by the arrival of a new predator?
A. Death rate
B. Evolution rate
C. Immigration rate
D. Maturation rate
A. Death rate
400
Many enzymes are found in the cytoplasm of human body cells. These enzymes would be expected to function optimally at which of the following temperatures and pH values?
A. 0°C and pH 2
B. 12°C and pH 5
C. 37°C and pH 7
C. 37°C and pH 7
400
Congenital deafness is hearing loss that is present from birth. The mode of inheritance is autosomal dominant.
Suppose a man is heterozygous for this type of deafness, and a woman does not have hearing loss. If these two individuals have a child, what is the probability that the child will have congenital deafness?
1/2
400
Which of the following are parts of the
human nervous system?
A. alveoli, trachea, larynx
B. erythrocyte, plasma, capillary
C. neuron, brain, spinal cord
D. osteocyte, ligament, cartilage
C. neuron, brain, spinal cord
400
Which of the following is most important in classifying two groups of bears into the same genus?
A. Similar diets
B. Similar genes
C. Similar habitat
D. Similar body size
B. Similar genes
500
If the producers in a food web were removed, which of the following changes would most likely occur?
A. The entire food web would collapse over time.
B. The food web would depend on the decomposers for energy.
C. The consumers would begin making energy for the food web.
D. The populations of the remaining organisms in the food web would increase.
A. The entire food web would collapse over time.
500
During exercise, a person’s muscles need
a constant supply of ATP. To meet this
need, the rate of which of the following
processes increases?
A. Cellular respiration
B. Mitosis
C. Photosynthesis
A. Cellular respiration
500
Which of the following helps to explain why X-linked recessive traits in humans occur more frequently in males than in females?
A. Males and females have different sets of hormones that regulate the expression of traits.
B. Males reach physical maturity more slowly than females, giving recessive traits more time to appear.
C. Only one copy of the X chromosome is found in cells of males, but two copies are found in cells of females.
C. Only one copy of the X chromosome is found in cells of males, but two copies are found in cells of females.
500
Joints are most important for which function of the human skeletal system?
Movement
500
Which of the following observations best supports the conclusion that dolphins and sharks do NOT have a recent common ancestor?
A. Dolphins form social groups, but sharks are solitary.
B. Dolphins hunt during the day, but sharks are nocturnal.
C. The jawbone structure in dolphins is very different from the jawbone structure in sharks.
C. The jawbone structure in dolphins is very different from the jawbone structure in sharks.