Based on their experiment with T2 bacteriophages, Hershey and Chase concluded that
A. virulent bacteria can transform nonvirulent bacteria.
B. DNA replication is semiconservative.
C. A always pairs with T and G always pairs with C.
D. DNA functions as the genetic material.
E. the phage coat contains the genetic material.
Answer: D
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What is the function of normal biota of the respiratory tract?
A. Provides antibodies B. Microbial antagonism C. Competes with pathogens for resources and space D. Both [competes with pathogens for resources and space] and [microbial antagonism] are correct. E. All of these three functions are correct.
When the haploid hyphae of two club fungi of
opposite mating type fuse, what is the nuclear condition (known as ploidy)?
a. 1n b. 2n c. 3n d. n+n e. 2n+n
Currently, the only possible cure for genetic
disorders is
a. genetically modified drugs. b. xenotransplantation. c. whole genome replacement. d. gene therapy. e. GMOs.
In order for cellular respiration to occur in a cell, oxygen must be present.
a. true b. false