In evolutionary terms, which of the following organisms is the most successful?
(A) The one that lives the longest
(B) The one that grows the most rapidly
(C) The one that leaves the greatest number of offspring that survive to reproduce
(D) The one that has the best characteristics for the current environment
Ans: (C) The one that leaves the greatest number of offspring that survive to reproduce
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Folliculitis, furuncles, and carbuncles are localized abscesses either in or around hair follicles. Which organism is the most common etiologic agent for all three infections?
a. Pseudomonas aeruginosa b. Staphylococcus epidermidis c. Escherichia coli d. Staphylococcus aureus
Wilkins and Franklin studied the structure of DNA using ____
a. molecular scale models of nucleotides b. X-ray diffraction c. computer-assisted graphics d. electron microscopy e. light microscopy
What happens when thyroid hormone binds to cells of brown adipose tissue?
a. mitochondria of brown adipose tissue cells carry out reactions that produce heat b. a shivering response for heat production by skeletal muscle c. the body stores more energy as fat d. a decrease in metabolic rate
The primary function of the large intestine is to
A. emulsify fats. B. reabsorb water and other secretions. C. absorb food molecules. D. produce digestive juices.