__________ are dormant structures formed by bacteria in response to adverse environmental
conditions.
a. Capsids
b. Endospores
c. Exotoxins
d. Endotoxins
e. Heterocysts
B
You might also like to view...
Which of the following statements is(are) true
concerning promoters? a. They are short sequences in DNA. b. They are locations in DNA where regulatory proteins gather. c. They control transcription. d. They are associated with specific genes. e. All of these are true
Genotypes are said to be in ________ equilibrium if there is random mating and no other forces tend to alter the proportions of alleles from one generation to the next.
A. homeostatic B. Hardy-Weinberg C. Mendelian D. steady state
A double-stranded DNA molecule can be separated into single strands by heating it to 90°C because _______________________
(a) heat disrupts the hydrogen bonds holding the sugar–phosphate backbone together. (b) DNA is negatively charged. (c) heat disrupts hydrogen-bonding between complementary nucleotides. (d) DNA is positively charged.
Because all DNA polymerases synthesize DNA in the 5?-to-3? direction, and the parental strands are antiparallel, DNA replication is accomplished with the use of two mechanisms: continuous and discontinuous replication
Indicate whether the following items relate to (1) continuous replication, (2) discontinuous replication, or (3) both modes of replication. ______ primase ______ single-strand binding protein ______ sliding clamp ______ RNA primers ______ leading strand ______ lagging strand ______ Okazaki fragments ______ DNA helicase ______ DNA ligase Fill in the blank(s) with correct word