Biology Checkpoint

What determines the code, or information, of a DNA molecule?

• the shape (structure) of the nitrogen bases
• the order (sequence) of the nitrogen bases
• the color of the nitrogen bases
• the frequency (number) of nitrogen bases

Tags

NGSS.HS-LS1-1

A segment of DNA that codes for a trait

• gene

• allele

• chromosome

• chromatid

Tags

NGSS.HS-LS1-1

NGSS.HS-LS3-1

Gene expression is the ability for a gene to be:

• in the genome.

• transcribed.

• non-coding.

• a dominant allele.

Which RNA type is the result of transcription?

• tRNA

• Non-coding RNA

• rRNA

• mRNA

Which of the following is correct?

• Nucleotide triplets code a single amino acid.

• Each amino acid codes a nucleotide.

• Each nucleotide codes an amino acid.

• Amino acid triplets code a single nucleotide.

Tags

NGSS.HS-LS1-1

NGSS.HS-LS3-1

RNA substitutes uracil for which nucleotide?

• Adenine

• Cytosine

• Guanine

• Thymine

Translation is a process where:

• a polypeptide sequence is produced from a sequence of rRNA codons.

• a polypeptide sequence is produced from a sequence of tRNA codons.

• a polypeptide sequence is produced from a sequence of mRNA codons.

• a DNA nucleotide sequence is used to produce mRNA codon sequence.

Transcription factors are produced by:

• coding DNA.

• structural genes.

• non-coding DNA and structural genes.

• non-coding DNA.

A split gene includes non-coding introns that are ____________ during post-transcriptional modification.

• capped

• removed

• retained

• methylated

Which of these processes begin with an mRNA molecule?

• DNA Replication
• Transcription
• Translation
• None of them