Colds are the MOST infectious viral diseases
Indicate whether the statement is true or false.
Answer: TRUE
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Which of these is a correct representation of the hierarchy of biological organization from least to most complex?
A) organelle of a stomach cell, digestive system, large intestine, small intestine, intestinal tissue, organism B) organelle of an intestinal cell, digestive system, small intestine, large intestine, intestinal tissue, organism C) molecule, intestinal cell organelle, intestinal cell, intestinal tissue, digestive system, organism D) molecule, small intestine, large intestine, intestinal tissue, digestive system, organism E) molecule, digestive system, digestive cell organelle, small intestine, large intestine, intestinal cell, organism
Which tissue type can transmit electrical impulses from one part of an organism to another?
a. epithelial tissue b. connective tissue c. muscle tissue d. nervous tissue e. adipose tissue
Studies using fissure water from gold-mining operations nearly 3 km deep indicate that the bacteria present use what for energy?
a. organic carbon b. sulfur c. iron d. H2
There is a population of frogs living in a pond, 25 are green, 25 are brown, 25 are yellow with green spots and 25 are all yellow. A drought occurred and 75% of the frogs died. The remaining frogs were green and brown, after 25 generations the frogs still were green and brown, yellow frogs never appeared in the population again. Which of the following best explains this phenomenon?
A. Balancing selection. B. Founder effect. C. Bottleneck effect. D. Sexual selection. E. Heterozygote advantage.