Which of the following chemicals is a signal that induces systemic acquired resistance?
A. systemin
B. salicylic acid
C. brassinosteroids
D. avr
E. nitric acid
Answer: B
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Nearly half of mammal species are ________
a. bats b. rodents c. marsupials d. aquatic
In a population that is following a logistic growth pattern, what shape does the population's growth curve most closely resemble?
A) S B) J C) ? D) ?
You have discovered a very small amount of DNA from an ancient organism that you want to save and study. What is the very first thing you should do to allow you to study this DNA in the lab?
A. Polymerase chain reaction (PCR) B. Gel electrophoresis C. Insert the DNA into a vector D. RT-PCR
Which of the following foods can be used to produce ATP in cellular respiration?
a) fats only. b) carbohydrates, proteins and fats. c) carbohydrates and fats only. d) proteins only. e) carbohydrates only.