The membrane attack complex of the complement system is not effective against viruses.
Answer the following statement true (T) or false (F)
True
Most viruses do not contain a membranous component and are not affected by the membrane attack complex that kills bacteria.
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What is the difference between a gene and an allele?
A. A gene is a segment of DNA that codes for a protein or RNA; an allele is an alternate form of a gene. B. An allele is a segment of DNA that codes for a protein or RNA; a gene is an alternate form of an allele. C. An allele is a segment of DNA that codes for a gene; a gene is an alternate form of an allele. D. A gene is a segment of DNA that codes for a protein or RNA; an allele refers to all the DNA of an organism.
In female mammals, germ cells are
A. not produced until puberty. B. arrested in meiosis I until puberty. C. fully mature gametes at birth. D. arrested in meiosis II until puberty. E. arrested in mitosis until puberty.
A ________ is the amount of energy required to warm 1 gram of water 1 degree Celsius.
Fill in the blank(s) with the appropriate word(s).
Which of the following results in a stable population?
a. higher birth than death rates b. equal birth and death rates c. lower birth than death rates d. no births while death remains constant