Bio Unit 2.2 Review

Which of the following is the most significant contribution DNA makes to the formation of an organism?

• energy

• information

• matter

• support

Tags

NGSS.HS-LS1-1

The genetic code is the set of instructions that translates genetic material into proteins. This code defines how sequences of three nucleotides specify which amino acid will be added next during protein synthesis. Each sequence of three nucleotides is called ---

• a protein

• a codon

• a DNA molecule

• a mutagen

Two pea plants produce round seeds. Which of the following should you conclude about the genetic material in these two plants?

• They have identical DNA.

• They have the same parents.

• They grew from a single seed.

• They share a common gene.

Tags

NGSS.HS-LS3-1

In the process of translation, the ribosome id the place where--

• DNA strands are separated and copied.

• amino acid chains are assembled from information in the mRNA.

• information from DNA is copied to RNA.

• free floating amino acids are picked up by RNA.

A mutation that results in a nucleotide being inserted into the DNA sequence most likely occurs during the process of -

• replication

• transcription

• translation

• transformation

Tags

NGSS.HS-LS3-2

A team of scientists collected a unicellular, prokaryotic organism that lived in a volcanic hot spring and had lipids in its cell membrane that were not found in any other group of organisms. The scientists most likely classified the organism into which of the following kingdoms?

• Protista

• Fungi

• Eubacteris

• Archaebacteria

The diagram shows the process of translation.

Which of the following is represented by the number 1 in the diagram?

• amino acids

• DNA

• mRNA

• tRNA

Study the sentences describing the steps of protein synthesis. Which sequence places the steps in the correct order?

1. Transfer RNA picks up individual amino acids and carries them to the ribosome.
2. Ribosomal RNA bonds mRNA and tRNA.
3. A single strand of DNA serves as a template for making mRNA.
4. Messenger RNA carries the sequence of nucleotides to the ribosomes.
5. A protein is synthesized.

• 2,5,3,4,1

• 3,4,1,2,5

• 3,2,4,5,1

• 2,4,1,5,3

Tags

NGSS.HS-LS1-1

A mutation in DNA replaces cytosine with thymine, as shown below.

Original DNA sequence:

TATGAACTGGAA

Mutated DNA sequence:

TATGAATTGGAA

Compared to a protein produced by the original DNA sequence, a protein produced by the mutated sequence will differ in -

• all amino acids that come after the C

• a single amino acid

• the amino acids that come before the C

• all of the amino acids

Tags

NGSS.HS-LS1-1

NGSS.HS-LS3-2

Which of these can be found in RNA but not DNA?

• ribose sugar

• helical structure

• adenine

• phosphate group