A division of fungi that lacks septa in their hyphae except when they form sporangia or gametangia is the
A. ascomycetes.
B. chytridomycetes.
C. zygomycetes.
D. basidiomycetes.
Answer: C
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In performing research, you treat frog zygotes with antibodies that bind E-cadherin. As a result, you expect
A) the cells to become exclusively muscle tissue. B) the cells to be loosely associated and abort development. C) the cells to be loosely associated and develop into a novel strain of frog. D) the cells to divide uncontrollably. E) no change with regard to development.
Cyanobacteria are phototrophic. Which of the following would they also be considered?
a. Heterotrophic b. Autotrophic c. Chemotrophic d. Obligate anaerobes e. Aerobic
What kind of natural selection can cause two populations?
What will be an ideal response?
In a double-blind experiment, ________
A) the participants are unaware of whether they are in the experimental or control groups because of the use of placebos B) the researchers are unaware of which participants are in the experimental and control groups C) participants are randomly assigned to a control or experimental group D) All of the above are true.