Vaccinations involve injecting ________ into the person or animal
A) weakened or killed microbes
B) antibodies against the disease
C) antibodies against similar diseases
D) antibiotics
E) the disease itself
A
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The evolution of organisms that use oxygen in their respiration was possible only because of the action of a group of bacteria that produced oxygen and changed the Earth's atmosphere from an anoxic one to one rich in oxygen. That group of bacteria was:
A. Cyanobacteria B. spirochaetes C. Proteobacteria D. Staphylococcus E. Actinobacteria
Explain the structure and function of the cell nucleus. Include the terms nuclear envelope, nucleoli, chromatin, chromosomes, autosomes, and sex chromosomes
What will be an ideal response?
The type of muscle that typically surrounds hollow tubes and organs like the stomach is
A. skeletal muscle. B. smooth muscle. C. striated muscle. D. cardiac muscle. E. voluntary muscle.
About how many species of plants and animals worldwide have been described and given Latin names?
A) 150,000 B) 1.5 million C) 10 million D) 100 million