Quiz 6

Question 1

Which of the following methods for determining microbial growth first requires that serial dilutions of a liquid sample be made?

Answer 1

Plate count method

Question 2

Which of the following would be the best method for detecting the presence of microorganisms in the air we breathe?

Answer 2

Filtration

Question 3

Which of the following is NOT a disadvantage to using a direct microscopic count when trying to ascertain the number of microbes in a water sample?

Answer 3

No incubation time is required to make the count

Question 4

Which of the following is direct measurement of microbial growth?

Answer 4

Conducting the most probable number test with 95% confidence interval

Question 5

Which of the following is true of DNA?

Answer 5

B and c

Question 6

Which of the following is true of RNA?

Answer 6

None of the above

Question 7

What kind of bond connects the sugar and phosphate molecules in the backbone of DNA?

Answer 7

Covalent

Question 8

All of the genetic material in a cell/organism is called

Answer 8

Genome

Question 9

What is the name of the region/sequence of DNA to which the appropriate enzyme first binds to begin transcription?

Answer 9

Promoter

Question 10

In translation, tRNA molecules deliver ______ to the ribosome.

Answer 10

Amino acids

Question 11

mRNA is translated in blocks called _______, each of which consist of 3 nucleotides.

Answer 11

Codons

Question 12

Where does transcription occur in a eukaryotic cell?

Answer 12

Nucleus

Question 13

Links the backbones of Ozarki fragments together by for making a covalent bond between them during DNA synthesis.

Answer 13

DNA ligase

Question 14

Unzips the two DNA strands during DNA replication

Answer 14

DNA helicase

Question 15

Is produced by transcription

Answer 15

tRNA, mRNA, rRNA

Question 16

Carries out transcription

Answer 16

RNA polymerase

Question 17

Copies DNA

Answer 17

RNA polymerase