DNA replication

Presentation

•

Science

•

6th - 8th Grade

•

Medium

•

NGSS

HS-ESS2-4, HS-ESS3-1

Standards-aligned

Emmet O'Melia

Used 10+ times

FREE Resource

34 Slides • 19 Questions

DNA replication

By Emmet O'Melia

DNA Replication

Replication is the process DNA uses for making a copy of itself.

The reason DNA must be copied is to make new cells for

Growth
Cell repair
Reproduction

Trillions of new cells are needed for a human to grow to adulthood.

Each new cell requires new DNA.

Video Segments

There are three video segments. To play each one, click on the video to start.

Replication happens in interphase.

Cells spend the majority of their time in interphase.

Interphase

Multiple Choice

The purpose of replication is to

eliminate DNA

make more DNA

change the DNA

Multiple Choice

Where does replication happen in human cells?

the cell membrane

the ribosome

the nucleus

Multiple Choice

When does replication happen?

mitosis

cell division

interphase

Multiple Choice

The purpose of enzymes is to

slow down reactions

speed up reactions

Multiple Choice

The enzyme that unzips DNA by breaking hydrogen bonds is

ligase

helicase

DNA polymerase

primase

Multiple Choice

DNA polymerase is called "the builder" because it

digs a foundation

makes new strands of DNA

breaks hydrogen bonds

Helicases are enzymes that bind and may even remodel nucleic acid or nucleic acid protein complexes.
There are DNA and RNA helicases.
DNA helicases are essential during DNA replication because they separate double-stranded DNA into single strands allowing each strand to be copied

B. PROCESS OF DNA REPLICATION

Uncoil & unzip DNA molecule

➢ Helicase breaks

weak

Hydrogen Bond

between nitrogenous bases

Multiple Select

Which of the following are the correct pairings of DNA nucleotides?

A-T

A-C

C-T

C-G

Multiple Choice

The bonds that join the DNA nucleotides and that can easily be broken for replication are

nitrogen bonds

hydrogen bonds

oxygen bonds

Multiple Choice

Replication is called semi-conservative because

Each new molecule contains part of the original DNA

sometimes it conserves fuel

DNA conserves ecosystems

Multiple Choice

The result of replication is two DNA molecules

True

False

Protein Synthesis

This is how DNA controls the out put of Proteins as needed by the Cells.

Fill in the Blanks

Type answer...

Multiple Select

Which of these is NOT true about the difference between DNA and RNA?

RNA has Uracil, DNA has Thymine

RNA has deoxyribose, DNA has ribose

RNA has phosphates, DNA doesn't

RNA is single stranded, DNA is double stranded

Multiple Choice

Which type of RNA is created in the nucleus?

rRNA

tRNA

hRNA

mRNA

Multiple Choice

The process of building mRNA from a DNA template is called...

translation

transcription

transportation

Fill in the Blanks

Type answer...

Fill in the Blanks

Type answer...

Multiple Choice

mRNA: UUA CAG GUA

Use the codon chart to determine the first amino acid.

Methionine (MET)

Leucine (LEU)

Glutamine (GLN)

Multiple Choice

mRNA: UUA CAG GUA

Use the codon chart to determine the second amino acid.

Methionine (MET)

Leucine (LEU)

Glutamine (GLN)

Multiple Choice

If the mRNA codon AUG codes for serine, what's the anti-codon on the tRNA that will bring serine to the ribosome?

TAG

TAC

UAG

UAC

DNA replication

By Emmet O'Melia

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