DNA1

Three nucleotides code for:

1 amino acid

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

1,1

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

10%

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, 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? tRNA ribosomes mRNA DNA

DNA

What is required for DNA replication to occur?

DNA helicase DNA ligase DNA polymerase

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

DNA is unwound

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

TTCGGT

The twisted ladder shape of DNA is called a:

a double helix

A nucleotide consists of:

a nitrogen base, sugar, and phosphate

A gene is:

a segment of DNA that codes for a protein

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

anticodon

What are necessary component of translation?

anticodon, mRNA, amino acid

Which of the following best describes the arrangement of the sides of the DNA molecule? twisted antiparallel bonded alternating

antiparallel

Translation begins:

at the start codon

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

bases

The three nucleotide sequence on RNA is called a:

codon

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

The DNA molecule is held together by:

hydrogen bonds

3 reasons RNA differs from DNA:

it has a different kind of sugar it is single stranded it has uraci

Okazaki fragments form on the:

lagging strand

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

lagging strand, ligase

What is NOT a necessary component of translation?

ligase

Which of the following takes the genetic code to the cytoplasm:

mRNA

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 complementary bases?

polymerase

The process by which DNA makes a copy of itself is called:

replication

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

ribose, deoxyribose

Adenine always pairs with:

thymine

The process by which RNA is made from DNA:

transcription

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?

transfer RNA

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

uracil