Biology Chapter 6 test review

During DNA replication, __________.

• matching nucleotides are shuttled in.

• repair enzymes recognize and repair mistakes.

• the two strands in the DNA molecule are unzipped.

• all of these take place.

Tags

NGSS.HS-LS3-2

Why do cells have a continuous supply of ATP?

• ATP molecules can be used to store energy repeatedly.

• Phosphate and water combine to make more ATP.

• ADP is recycled to make more ATP.

• Cells store more ATP than they can use.

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NGSS.HS-LS1-7

In a DNA molecule, adenine always bonds to __________.

• cytosine

• thymine

• uracil

• guanine

The molecule that cells use to temporarily store energy is __________.

• adenosine triphosphate

• adenosine diphosphate

• chlorophyll

• glucose

Which of the following is not a difference between DNA and RNA?

• DNA is a double strand, while RNA consists of a single strand.

• DNA contains thymine, which is replaced by uracil in RNA.

• The sugars in DNA and RNA are different.

• DNA is found in the nuclei of cells, while RNA is found only in the cytoplasm.

The process of making a strand of RNA that is based on a strand of DNA is known as __________.

• transcription

• translation

• duplication

• replication

The cellular organelle that reads an RNA strand and assembles amino acids into a protein is the __________.

• leucoplast

• mitochondrion

• ribosome

• Golgi apparatus

The structure of a DNA molecule is known as a __________.

• polypeptide

• polymerase

• codon

• double helix

According to Figure 1, a section of DNA that normally transcribes as GCAUUGCAAGUC is mutated during replication and now produces GCAUUACAAGUC. Does the new sequence result in a structural change in the protein coded for by that sequence? Explain.

• No, there is no difference in the DNA sequence.

• No, UUG and UUA both code for Leucine, so there is no difference in the peptide chain.

• Yes, UUG and UUA code for Leucine, but the code must be the same.

• Yes, UUA codes for a different amino acid.

Tags

NGSS.HS-LS1-1

NGSS.HS-LS3-2

Why can’t cells directly use the energy from glucose?

• A. Glucose has too little energy.

• B. Glucose has too much energy.

• C. Cells cannot digest glucose.

• D. Glucose contains only single bonds.

Tags

NGSS.HS-LS1-7