Which order or genus of Archaea are part of the microbiota of the human colon, vagina, and mouth?
a. Sulfolobales
b. Methanobacteriales
c. Halobacteriales
d. Pyrodictium
Answer: b. Methanobacteriales
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Which property of water molecules is
responsible for movement of water from roots to leaves in a plant?
a. hydrophobicity b. temperature stability c. fusion d. solvent polarity e. cohesion
How do daughter cells at the end of mitosis and cytokinesis compare with the parent cell before DNA replication occurs?
A) The daughter cells have half the number of chromosomes and half the amount of DNA. B) The daughter cells have the same number of chromosomes and the same amount of DNA. C) The daughter cells may have the same number of chromosomes but double the amount of DNA. D) The daughter cells have half the amount of cytoplasm and half the number of chromosomes.
The stage of virus infection called (assembly/entry/synthesis) is the stage most dependent on host cell proteins.
Fill in the blank(s) with the appropriate word(s).
Somatic mutations (mutations in the body of animals that are not transmitted via the germline to offspring) in immune system cells help long-lived organisms keep pace with fast-evolving pathogens
Does this observation support the red queen hypothesis? Briefly justify your answer. What will be an ideal response?