Which of the following techniques involves the preparation of a karyotype?
A) amniocentesis
B) chorionic villus sampling
C) fetoscopy
D) A and B only
E) A, B, and C
Ans: D) A and B only
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Which of the following statements best represents the relationships between the light reactions and the Calvin cycle?
A) The light reactions provide ATP and NADPH to the Calvin cycle, and the Calvin cycle returns ADP, i, and NADP+ to the light reactions. B) The light reactions provide ATP and NADPH to the carbon fixation step of the Calvin cycle, and the cycle provides water and electrons to the light reactions. C) The light reactions supply the Calvin cycle with CO2 to produce sugars, and the Calvin cycle supplies the light reactions with sugars to produce ATP. D) The light reactions provide the Calvin cycle with oxygen for electron flow, and the Calvin cycle provides the light reactions with water to split. E) There is no relationship between the light reactions and the Calvin cycle.
There are more species of _____________ than there are species of plants.
a. beetles b. mammals c. crustaceans d. flies e. bees
The test that involves a reaction between known antibodies and an unknown bacterium is known as
A. ELISA. B. phage typing. C. flow cytometry. D. Southern blotting.
Infectious dose of 50% (ID50) refers to the number of microorganisms required _________
Fill in the blank(s) with the appropriate word(s).