The function of DNA polymerase I is to ____.

add nucleotide complements to the growing strand.

bond the Okazaki fragments together on the lagging strand.

keep the DNA strands from reforming after DNA helicase "unzips" them.

In his work with pneumonia-causing bacteria and mice, Griffith found that___.

some substance from pathogenic cells was transferred to nonpathogenic cells, making them pathogenic.

the protein coat from pathogenic cells was able to transform nonpathogenic cells.

heat-killed pathogenic cells caused pneumonia.

the polysaccharide coat of bacteria caused pneumonia.

What determines the nucleotide sequence of the newly synthesized strand during DNA replication?

the nucleotide sequence of the template strand

the particular DNA polymerase catalyzing the reaction

the relative amounts of the four nucleoside triphosphates in the cell

the primase used in the reaction e. the arrangement of histones in the sugar phosphate backbone

Why does the DNA double helix have a uniform diameter?

C nucleotides pair with A nucleotides.

Deoxyribose sugars bind with ribose sugars.

Nucleotides bind with nucleoside triphosphates.

Which of the following best describes a DNA molecule?

contains equal amounts of all bases

Which 2 molecules forms the sides (backbone) of the DNA ladder?

deoxyribose (sugar) and phosphate

deoxyribose and nitrogenous base

deoxyribose and a hydrogen bond

DNA replication results in two DNA molecules,

each one with one new strand and one original strand

each one with two original strands

one with two new strands and the other with two original strands

What are the subunits of DNA and what is their function?

nucleotides that store information

monosaccharides that provide quick energy for the cell

lipids that store energy and provide insulation

proteins that provide the building blocks for the structural components of organisms

AP Biology Unit 6 Review Pt1: The Molecular Basis of Inheritance

Authored by Stacy Monson

Biology

11th Grade - University

NGSS covered

Used 70+ times

AP Biology Unit 6 Review Pt1: The Molecular Basis of Inheritance

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MULTIPLE CHOICE QUESTION

2 mins • 1 pt

You briefly expose bacteria undergoing DNA replication to radioactively labeled nucleotides. When you centrifuge the DNA isolated from the bacteria, the DNA separates into two classes. One class of labeled DNA includes very large molecules (thousands or even millions of nucleotides long), and the other includes short stretches of DNA (several hundred to a few thousand nucleotides in length). These two classes of DNA probably represent

leading strands and RNA primers.

Okazaki fragments and RNA primers.

lagging strands and Okazaki fragments.

leading strands and Okazaki fragments.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Which of the following help(s) to hold the DNA strands apart while they are being replicated?

RNA primase

single–strand binding proteins

DNA polymerase I

DNA ligase

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Which enzyme catalyzes the elongation of a DNA strand in the 5' ---> 3' direction?

DNA polymerase I

DNA polymerase III

helicase

topoisomerase

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

What is meant by the description "antiparallel" regarding the strands that make up DNA?

The twisting nature of DNA creates nonparallel strands.

One strand is positively charged and the other is negatively charged.

The 5' to 3' direction of one strand runs counter to the 5' to 3' direction of the other strand.

Base pairings create unequal spacing between the two DNA strands

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

The genetic code is essentially the same for all organisms. From this, one can logically assume which of the following?

The same codons in different organisms translate into the different amino acids.

A gene from an organism can theoretically be expressed by any other organism.

All organisms have experienced convergent evolution.

DNA was the first genetic material.

What is the role of DNA ligase in the elongation of the lagging strand during DNA replication?

It catalyzes the lengthening of telomeres.

It synthesizes RNA nucleotides to make a primer.

It unwinds the parental double helix.

It joins Okazaki fragments together.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

What is meant that DNA replication follows a “semi-conservative” model?

After DNA replication, each strand contains one side that is a parental strand and the other side is a daughter strand.

After DNA replication, one completed strand contains only parental DNA while the other contains only daughter DNA.

None of these identify the “semi-conservative” model.

After DNA replication, one completed strand contains a mixture of both parental DNA and daughter DNA dispersed throughout the strand.

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AP Biology Unit 6 Review Pt1: The Molecular Basis of Inheritance

Which of the following help(s) to hold the DNA strands apart while they are being replicated?

Which enzyme catalyzes the elongation of a DNA strand in the 5' ---> 3' direction?

What is meant by the description "antiparallel" regarding the strands that make up DNA?

The genetic code is essentially the same for all organisms. From this, one can logically assume which of the following?

What is the role of DNA ligase in the elongation of the lagging strand during DNA replication?

What is meant that DNA replication follows a “semi-conservative” model?

Which scientist(s) mixed a heat-killed pathogenic strain of bacteria with a living nonpathogenic strain can convert some of the living cells into the pathogenic form?

Which scientist(s) said that adenine and guanine equals thymine and cytosine?

Which scientists determined that DNA was a double helix?

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