Which organ does not produce steroid hormones?
A. testes
B. ovaries
C. adrenal cortex
D. pineal gland
Answer: D
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The figure below shows a three-dimensional model of the enzyme lysozyme and a map of the location of the important binding and catalytic amino acids that participate at the active site
Why are the amino acids of an enzyme that participate in substrate binding and in catalytic activity widely separated on the polypeptide chain, rather than being close together in the primary sequence? What will be an ideal response?
Humans and houseflies are examples of what type of species?
a. generalist b. specialist c. dominant d. primary e. biotic
The higher the concentration of solute in a solution, the __________ the effective water concentration
and the __________ the osmotic pressure. a. lower; lower b. lower; higher c. higher; higher d. higher; lower e. Answer cannot be determined from the information provided.
Flowers that are strongly oderiferous and blue or UV purple in color would most likely be pollinated by:
a. insects. b. birds. c. bats. d. wind. e. small rodents