Ap Bio unit 4

If a DNA molecule is found to be composed of 40% thymine, what percentage of guanine would be expected.

10%

In RNA, _____ codon(s) translate to ______ amino acid(s)

1;1

DNA replication results in:

2 DNA molecules that each contain a strand of the original

How many different amino acids are there?

20

Proteins contain ____ different amino acids, whereas DNA and RNA are composed of ___ different nucleotides

20;4

How many different codons are possible?

64

The base pair rules states that:

A pairs with T and G pairs with C

Given the following DNA strand, which of the following is its complementary mRNA? G G A C T G A T T

C C U G A C U A A

Once transcription has been completed, which of the following is NOT necessary for protein synthesis to occur?

DNA

The element that transformed the bacteria in Griffith's experiments was:

DNA

Which of the following is required for DNA replication to occur? (3)

DNA helicase DNA ligase DNA polymerase

Which of the following must happen first in order for DNA replication to occur?

DNA is unwound

The Hershey-Chase research showed that:

DNA was the molecule of heredity

A DNA strand has the following bases: A A G C C A. What are the bases on its complimentary strand?

TTCGGT

Which site of the tRNA molecule binds to the mRNA molecule?

anticodon

Which of the following best describes the arrangement of the sides of the DNA molecule?

antiparallel

Translation begins:

at the start codon

The "rungs" of the DNA ladder are made of:

bases

In order to transform to a virulent form of bacteria, non encapsulated bacteria must:

be exposed to killed capsulated bacteria

A stretch of chromosome that codes for a trait can be called a(n):

gene

The enzymes that break hydrogen bonds and unwind DNA are:

helicases

Okazaki fragments form on the

lagging strand

Okazaki fragments occur on the ___ and are bonded together by ______

lagging strand; ligase

Which of the following is NOT a necessary component of translation?

ligase

Transcription results in:

messenger RNA

In the ladder anology of the DNA molecule, the "rungs" of the ladder are:

paired nitrogenous bases

During replication, what enzyme adds complimentary bases?

polymerase

Before the Hershey-Chase experiment, many scientists believed that ____ carried the hereditary information.

proteins

In the Hershey Chase Experiment, DNA was labeled with ____, and bacteriophage protein was labeled with _____.

radioactive phosphorous; radioactive sulfur

The sugar in RNA is _____, the sugar in DNA is _______

ribose; deoxyribose

A nucleotide consists of:

sugar, phosphate group, nitrogenous base

RNA is synthesized on a DNA template in a process called ______, which utilizes the enzyme _______

transcription, RNA polymerase

Amino acids are joined together into a protein chain by which of the following?

transfer RNA

Which of the following is found on RNA but not DNA?

uracil