What does mRNA carry away from the nucleus?
A) Information B) tRNA C) Enzymes D) Ribosomes E) Amino acids
A
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When considering nomenclature for scientific names, what is the difference between the two primates, Homo sapiens and Homo erectus?
A. One is a primate but the other is not. B. They are animals of a different kingdom. C. They are animals of a different order. D. They are animals of a different species. E. They are animals of a different genus.
Match the following items with the correct statements.
_______1. Organisms that live on dead or decaying organic matter. _______2. Microorganisms that do not cause disease. _______3. Microorganisms that usually do not cause disease, but can cause disease under certain circumstances. _______4. The microorganisms that live on us and in us. _______5. The most common causes of infectious diseases or microbial intoxications. a. pathogens b. nonpathogens c. opportunistic pathogens d. indigenous microflora e. saprophytes
If a mixture of bacteriophages, some labeled with radioactive sulfur and others labeled with radioactive phosphorus, is
placed in a bacterial culture, the bacteria will eventually contain ____.
a. primarily radioactive sulfur b. primarily radioactive phosphorus c. both radioactive sulfur and phosphorus d. neither radioactive sulfur nor radioactive phosphorus e. complete viruses with radioactive sulfur coats
A pollen grain “knows” when to germinate due to
which of the following? a. differentiation upon contact with the flower b. exposure to moisture c. cell signaling pathways d. electromagnetic impulses from the flower e. none of these