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

deoxyribose sugar and phosphate

deoxyribose sugar and a hydrogen bond

deoxyribose sugar and the nucleus

Assume that you have straight hair and your sibling has curly hair. What accounts for this difference?

The your sequence of nitrogen bases is different than your sibling.

You have DNA and your sibling does not.

Your sibling has a genetic mutation.

How is the instructions for your traits carried on a DNA molecule?

In the bond between the phosphate and the sugar

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

The process of DNA replication is called semi conservative because it results in

two identical molecules, each with 1 original strand and one new.

Two DNA molecules. One original molecule and one with two new strands

two exact copies with new strands

Why does DNA replicate?

To create another copy for the new cell

To create a duplicate copy in case the original gets damaged

To create a new copy to replace the damaged original

Which of the following does DNA polymerase NOT do?

connects nucleotides (in the new strand) through covalent bonds

Matches the template nucleotides with free nucleotides

This enzyme is capable of breaking Hydrogen bonds found between the bases of DNA

Single-Stranded Binding Protein

The picture below shows an enzyme unwinding and unzipping DNA. What is the name of this enzyme?

Single-Stranded Binding Protein

Which of the following describes the base pairing and bonding involved with nitrogenous bases?

Adenine binds with Thymine with 2 hydrogen bonds

Adenine binds with Cytosine with 2 hydrogen bonds

Adenine binds with Uracil with 3 hydrogen bonds

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

deoxyribose (sugar) and phosphate

deoxyribose and a hydrogen bond

untitled

Quiz

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Other

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9th Grade

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Practice Problem

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Medium

Bryan Jacobs

Used 1+ times

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38 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Which of the following best describes a DNA molecule?

double helix

contains ribosomes

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

What are the nucleotides made of?

Sugar, Phosphate, nitrogen base

Phosphate, chlorine, hydrogen

3.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

In DNA, Adenine bonds with ______________.

Guanine

Thymine

4.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Guanine bonds with ______________.

Adenine

Thymine

Cytosine

5.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Name this structure

double helix

nucelotide

hydrogen bond

6.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Which organelle is DNA usually found in?

cell membrane

ribosome

nucleus

7.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Why is DNA important?

it is very small and very complicated

because we eat it every day for energy

it serves as the blueprint for traits of all living things

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untitled

38 questions

Which of the following best describes a DNA molecule?

What are the nucleotides made of?

In DNA, Adenine bonds with ______________.

Guanine bonds with ______________.

Name this structure

Which organelle is DNA usually found in?

Why is DNA important?

Cytosine always pairs with

Which of the following is a base pair?

Thymine always pairs with

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