1. The study of interactions between organisms and their
interrelationships with the physical environment is known as
A. cytology
B. ecology
C. physiology
D. embryology
Answer: B
The study of interactions between organisms and their
interrelationships with the physical environment is known as
ecology. Cytology is the study of cells, physiology is the study
of the organism, and embryology is the study of embryos and their
development. 
2. Most of the nutrients in food are absorbed in the
body's
A. stomach
B. pylorus
C. small intestine
D. large intestine
Answer: C
Most of the nutrients in food are absorbed in the body's small
intestine.
3. The gene for color blindness is X-linked. If normal parents
have a color-blind son, what is the probability that he inherited
the gene for color blindness from his mother?
A. 0%
B. 25%
C. 50%
D. 100%
Answer: D
If normal parents have a color-blind son, the probability that
the son inherited the gene for color blindness from his mother is
100%. This is because color blindness is a sex-linked trait that
is found on the X chromosome, which is inherited from the mother,
as opposed to the Y chromosome, which is inherited from the
father. Thus a male can only inherit the gene for color blindness
from his mother. a>
4. Which of the following animals has the highest metabolic
rate?
A. dog
B. horse
C. mouse
D. rabbit
Answer: C
The smaller the body mass of an animal, the higher its metabolic
rate. Thus, of the animals listed, the mouse has the highest
metabolic rate.
5. Which of the following states of electromagnetic radiation
has the longest wavelength and lowest frequency?
A. radio waves
B. microwaves
C. gamma rays
D. visible light
Answer: A
Of the states of electromagnetic radiation listed, radio waves
have the longest wavelength and lowest frequency.
