The term used to describe a virus that causes a global outbreak of serious illness of which little natural immunity exists and that has sustained person-to-person transmission is:
a. epidemic.
b. pandemic.
c. endemic.
d. widespread.
B
A pandemic is defined as a virulent human influenza virus that causes a global outbreak of se-rious illness of which little natural immunity exists and that has sustained person-to-person transmission. Often pandemics result in high rates of human mortality with significant social, infrastructure, and economic consequences.
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Which of the following elements is considered an essential macronutrient for plants?
a. zinc b. uranium c. iron d. nickel e. carbon
Which of the following statements is false?
a. Behavior patterns are inherited. b. Instinctive behavior involves a complete response to a sign stimulus the first time it is encountered. c. Behavior evolves as a result of natural selection. d. Reproductive success is responsible for perpetuating behavior patterns. e. The mechanisms underlying instinctive and learned behavior are the same.
The anaerobic environment of swamps and marshes is an excellent habitat for methanogens.
a. true b. false
What role does Cas9 play in CRISPR?
A) It leads RNA to the target gene to be sliced. B) It creates a copy of the target gene. C) It creates a clone of the target bacterium. D) It cuts the target gene in a specific location. E) It leads researchers to the gene of interest