It is thought that viruses may have originated from cells because ____.
A) of their small size
B) they are pathogens
C) they can only replicate within a host cell
D) they do not have organelles
E) of their genetic material
Correct Answer:
Verified
Q19: According to scientific evidence, the first organisms
Q20: A _ is a disease-causing organism.
A) microbiota
B)
Q21: The _ is/are a plant's main line
Q22: Bacteria _.
A) are diploid organisms
B) produce gametes
C)
Q23: Prokaryotic cells are _.
A) found only in
Q25: _ allow bacteria to join together to
Q26: Outbreaks of _ in humans typically arise
Q27: The first eukaryotic cells were _.
A) bacteria
B)
Q28: Both mitochondria and chloroplasts are thought to
Q29: The theory that early metabolic reactions occurred
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