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Unit 3 Notes

Unit 3 Notes

Assessment

Presentation

•

Biology

•

9th Grade

•

Practice Problem

•

Easy

•
NGSS
HS-LS1-1

Standards-aligned

Created by

Anna Norwood

Used 3+ times

FREE Resource

38 Slides • 26 Questions

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Multiple Choice

Why is it important for cells to organize their DNA into chromosomes before cell division?

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To help keep genetic information organized

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To make the cell larger

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To increase the number of chromosomes

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To speed up metabolism

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Multiple Choice

What is the function of the centromere in a chromosome?

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It holds sister chromatids together

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It replicates DNA

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It produces proteins

4

It breaks down chromosomes

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Open Ended

Why do you think your body needs to constantly produce new cells? List at least 3 reasons.

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Fill in the Blank

Cells divide for two main reasons: growth and to replace ___ or old cells.

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Multiple Select

Which of the following are main stages of the cell cycle?

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Interphase

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Mitosis

3

Cytokinesis

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Replication

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Multiple Choice

Which phase of the cell cycle involves the cell growing in size, making new enzymes and organelles, and preparing for DNA replication?

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G1 phase

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S phase

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G2 phase

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M phase

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Multiple Choice

During which phase of the cell cycle does DNA replication occur, resulting in two identical sets of DNA?

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G1 phase

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S phase

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G2 phase

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M phase

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Multiple Select

Which of the following occur(s) during the M phase of the cell cycle?

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DNA forms into chromosomes

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Cell divides DNA and parts into two identical daughter cells

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Division of cytoplasm to form two identical daughter cells

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DNA replication

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Fill in the Blank

Fill in the blank: The phase in which the cell is not dividing or preparing to divide is called the ___ phase.

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Open Ended

What could happen if the DNA doesn’t copy accurately during the S phase?

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Multiple Choice

Which of the following correctly matches the phase of the cell cycle with its main event?

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G1 Phase - DNA replication

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S Phase - Cell prepares for division

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Mitosis - Nucleus divides into two identical nuclei

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Cytokinesis - Cell grows and carries out normal functions

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Fill in the Blank

Fill in the blank: If a cell does not meet the requirements at a checkpoint, it will enter ___ phase or undergo apoptosis.

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Multiple Select

Which of the following are benefits of apoptosis for the body?

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Replaces old cells

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Strengthens immune system

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Gets rid of damaged cells

4

Causes uncontrolled cell growth

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Multiple Select

What are possible consequences if cell cycle checkpoints stop working?

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Uncontrolled cell growth

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Cell death

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Failure to fix DNA errors

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Increased cell differentiation

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Multiple Select

Which of the following are considered carcinogens that can cause cancer?

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Sun exposure

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Tobacco use

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Viruses

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Exercise

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Multiple Choice

Which of the following best describes cancer?

1

Uncontrolled cell growth that causes tumors

2

A type of virus that infects cells

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A normal process of cell division

4

A harmless change in DNA

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Fill in the Blank

DNA is in a double ___ shape.

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Labelling

Using the labels, identify the parts of a DNA molecule.

Drag labels to their correct position on the image

Base pair

Phosphate

Nitrogen Base

Nucleotide

Deoxyribose

Hydrogen bond

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Multiple Choice

Which of the following is NOT a part of a nucleotide?

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Phosphate group

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Deoxyribose sugar

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Nitrogen base

4

Amino acid

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Multiple Choice

Cyosine matches with _

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Guanine

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Uracil

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Thymine

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Multiple Choice

Adenine matches with _

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Guanine

2

Uracil

3

Thymine

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Multiple Select

Which of the following statements about DNA are correct?

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DNA stores genetic information.

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DNA is composed of nucleotides.

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DNA is a double helix.

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DNA is made up of amino acids.

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Multiple Choice

In what phase of the cell cycle does DNA replication take place?

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G1

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S

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G2

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Prophase

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Multiple Choice

What is needed for DNA replication to unzip at the hydrogen bonds?

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phosphates

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enzymes

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deoxyribose (sugar)

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hydrogen

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Multiple Choice

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

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none of these

2

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

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two exact copies with new strands

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

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Multiple Choice

Contains one new and one old strand

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enzymes

2

helicase

3

template

4

semiconservative

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