Gravitropism is defined as
A. growth in response to the Earth's magnetic field.
B. gravity's pull on certain plant organs.
C. growth in response to the force of gravity.
D. any response to gravity that changes cell structures.
E. growth mostly away from gravity.
C. growth in response to the force of gravity.
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Buffer solutions:
A. work best when the pH of the buffer is two pH units above its pKa. B. have a greater buffering capacity at lower concentrations. C. buffer best when almost entirely in the conjugate base form. D. have a characteristic Ka, which can be expressed as [HA]/[A-][ H3O+]. E. do not change very much when H3O+ and OH- are added.
Endocrine and exocrine glands are derived from what type of tissue?
a. muscle b. nerve c. endocrine d. epithelial e. connective
Which of the following methods of DNA amplification does NOT require cloning?
a. reverse transcription b. polymerase chain reaction c. cloned DNA d. reverse transcription and polymerase chain reaction e. polymerase chain reaction and cloned DNA
The breathing center is located in the ________ of the brain and is responsible for the basic breathing rhythm
Fill in the blank(s) with correct word