The compounds involved in phototropism are ____
a. phototropins
b. gibberellins
c. cytokinins
d. phytoestrogens
e. statoliths
ANSWER: a
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An agent that kills bacteria is referred to as ________.
Fill in the blank(s) with the appropriate word(s).
Answer the following statement(s) true (T) or false (F)
1. True or False: If Ca+2 levels in the blood are too low, hormones from the parathyroid gland can induce bones to dissolve and release calcium. 2. Animals with closed circulatory systems are more successful than animals with open circulatory systems. Clarify Question What is the key concept addressed by the question? What type of thinking is required? Gather Content What do you already know evolutionary success? 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? 3. Since men produce millions of sperm, but women produce only one oocyte per cycle, in the vast majority of cases infertility is due to a problem with the woman. 4. The placenta protects the developing fetus from harmful substances like alcohol or drugs. 5. True or False: Haplodiploidy is necessary for eusociality.
Which one of the following bones articulates with the metatarsal bones?
A) phalanges B) fibula C) patella D) tibia E) femur
Which bird trait is an adaptation that is probably less well developed in flightless birds such as penguins and ostriches?
A) honeycombed bone structure B) amniotic egg C) vertebrae D) presence of feathers