Prokaryotic cells include:
A) bacteria and plant cells. B) archaea and fungi.
C) bacteria and archaea. D) bacteria and animal cells.
Answer: C
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What is the difference between a gene and an allele?
A gene is a form of a trait, and alleles make up genes. A gene is a sequence of bases in a DNA molecule, and an allele is an alternative version of a gene that codes for a different, but related, feature. A gene is a sequence of bases in a DNA molecule, and an allele is an alternative version of a gene that codes for the same feature. A gene describes a chromosome, and an allele describes an exact location of a gene on a chromosome. An allele and a gene are the same thing.
Which of the following is NOT a description of one group of archaea?
a) disease-causing b) low-pH-tolerant c) methanogens d) high-pH-tolerant e) high-pressure-tolerant
A single bad gene can cause someone to smell like a rotten fish. Which of the following best supports this statement?
a. As long as a person has at least one normal version of the FMO3 gene, he/she will not suffer from Fish Odor Syndrome. b. There is no particular gene that can cause a person to smell like a rotten fish; personal hygiene is not inherited. c. If a child does not have a parent with fish odor syndrome, then they automatically cannot acquire the syndrome. d. A person with fish odor syndrome will always have at least one child with fish odor syndrome. e. If a person who is a carrier of the fish odor allele has a child with someone who is not a carrier, the child will only smell slightly of rotten fish.
T cell receptors
a. are cell surface receptors integrated into the cytoplasmic membrane of T cells. b. bind foreign peptides in the context of MHC. c. are composed of an alpha and beta chain. d. exhibit all of the properties listed above.