An antibiotic interferes with the building of peptidoglycan cell walls. Which kind of pathogen can be controlled by this antibiotic? Gram-positive bacteria Gram-negative bacteria Viruses Sporozoans All of the above What limits a virus\'s ability to reproduce? Its metabolic rate The availability of host cells. Its ability to obtain nutrients Its ribosomes. A and C only Which of the following statements about dinoflagellates is true? They possess two flagella. All known varieties are autotrophic. Their walls are usually composed of silica plates. Many types lack mitochondria Their dead cells accumulate on the seafloor, are mined to serve as a filtering material. What is the function of reverse transcriptase in retroviruses? It hydrolyzes the host cell\'s DNA It uses viral RNA as a template for DNA synthesis. It translates viral RNA into viral DNA. It converts host cell RNA into viral DNA. It uses viral RNA as a template for making complementary RNA strands. What are prions? Mobile segments of DNA Tiny molecules of RNA that Infect plants. Viral DNA that has had to attach itself to the host genome Misfolded versions of normal brain protein. Viruses that invade bacteria Threadlike fungal filaments are celled mycella hyphae sporangia root hair mold.
Answer 30 Correct answer is A, Gram-positive bacteria.
An antibiotic that interferes with the building of peptidoglycan cell walls would act against both Gram-positive and Gram-negative bacteria. However, the thicker outer layer of Gram-negative bacteria protects it from the antibiotic. Therefore the correct answer is Gram-positive bacteria.
Answer 31. The correct answer is B, availability of host cells.
The availability of host cells is a limiting factor for viral reproduction.
Answer 32. The correct answer is A, they possess two flagella.
The presence of two dissimilar flagella is a characteristic feature of dinoflagellates.
Answer 33. Correct answer is B
Reverse transcriptase is an enzyme that catalyzes the reverse transcription of Viral RNA as a template to form DNA molecule. The DNA is then incorporated into the host genome to form viral coat proteins.
Answer 34. Correct answer is D, misfolded version of brain proteins
Prions are proteinaceous infective particles.
Answer 35 Correct answer is B. hyphae
The thread-like filaments of fungus are called hyphae
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