Which structure can still develop normally in an embryo with mutations in both the SHOOTMERISTEMLESS (stm) gene and the HOBBIT gene?
A. shoot apical meristem
B. cotyledons
C. leaf primordia
D. root apical meristem
E. root cap
Answer: B
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Rats learning to press a lever to receive food is an example of
A. avoidance. B. operant conditioning. C. habituation. D. inoperant conditioning. E. negative reinforcement.
Phage-encoded enzymes are
A. all produced simultaneously. B. produced in a sequential manner. C. strictly host enzymes. D. used to customize the cell for viral production. E. produced in a sequential manner AND used to customize the cell for viral production.
Honeybees can detect a variety of odorants through olfactory receptors on their antennae. You genetically engineer a receptor to be gated by the explosive chemical TNT, and use a transgene to express the receptor in honeybee olfactory neurons. What would this provide to the bee?
Honeybees have an incredible ability to distinguish thousands of different odorant molecules, using their large repertoire of olfactory receptors. A wide variety of different types of chemicals can be detected as odorants -- they simply require olfactory neurons with a receptor that can bind the chemical and transduce that stimulus into a receptor potential. A. the ability to taste TNT B. it would have no effect C. the ability to smell TNT D. the ability to collect TNT molecules E. the ability to see TNT Clarify Question What is the key concept addressed by the question? What type of thinking is required? Gather Content What do you already know about olfaction? What other information is related to the question? Choose Answer Given what you now know, what information is most likely to produce the correct answer? Reflect on Process Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
Which of the following are members of the class Mammalia and are known as primates?
a. monkeys c. birds b. turtles d. salamanders e. ray-finned fish