1. Which of the following organisms excrete urea?
Select one:
a. Bony fish
b. Mammals
c. Insects
d. Reptiles
e. Birds
2. Where in the body are carbon dioxide levels in the highest concentration?
Select one:
a. The pharynx
b. The trachea
c. The alveoli
d. The tissue cells
e. The larynx
3. What is the outer portion of the kidney?
Select one:
a. The renal medulla
b. The renal nephron
c. The renal pelvis
d. The renal cortex
e. The renal collecting duct
4. Which of the following would not be considered a density-dependent factor controlling population size?
Select one:
a. Drought
b. Predation
c. Parasites
d. Disease
e. Competition
5. Steroid hormones can be produced by ________.
Select one:
a. The pituitary gland
b. The thyroid gland
c. The ovaries
d. The parathyroid gland
e. The pineal gland
6. What disorder is caused by hypothyroidism?
Select one:
a. Cushing syndrome
b. Diabetes type 1
c. Diabetes type 2
d. Goiters
e. Sleep disorders
7. If you were studying the mature female gametophyte of a flowering plant, you would be studying the ________.
Select one:
a. stigma
b. style
c. pollen grain
d. zygote
e. embryo sac
8. Which of the following are biotic factors that affect population size?
Select one:
a. Logistical-dependent factors
b. Carrying capacity-dependent factors
c. Density-dependent factors
d. Density-independent factors
e. Biotic-independent factors
9. What protective membranes wrap around the brain and spinal cord?
Select one:
a. meninges
b. corpus callosum
c. cerebrospinal membranes
d. ventricles
e. hippocampus
10. What occurs during contraction?
Select one:
a. Thin filaments become shorter
b. Thin filaments become longer
c. Thick filaments become shorter
d. Thick filaments become longer
e. None of these are true