What is the main cause of guttation in plants?
a) plant injury
b) condensation of atmospheric water
c) transpiration
d) pressure flow in phloem
e) root pressure
Answer: e) root pressure
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The risk of heart attacks and stroke can be reduced by avoiding conditions that damage the blood vessel endothelium
Indicate whether the statement is true or false.
During the process of gel electrophoresis, the DNA fragments migrate due to the effects of ____
a. gravity b. vibrations
c. electrical charge d. magnetic attraction e. centrifugal force
Cri du chat syndrome arises from:a
trisomy for chromosome 5. b. deletion of part of chromosome 5. c. a 14/21reciprocal translocation. d. nondisjunction. e. a duplication of part of chromosome 15.
The molecule below
A. was probably produced by a plant.
B. is liquid at room temperature.
C. was formed by three separate hydrolysis reactions.
D. contains more energy per gram than a carbohydrate.