Cell Cycle

Multiple Select

Which of the following are reasons why cells need to divide?

• To grow by producing more cells

• To repair damaged tissue

• To increase the size of each cell

• To remove wastes more efficiently

Fill in the Blanks

What would happen to your skin if you kept scratching a mosquito bite?

Fill in the Blanks

The repeated pattern of growth and division that occurs in eukaryotic cells is called the

cycle.

Multiple Choice

Which phase of the cell cycle is responsible for the duplication of chromosomes?

• G1 phase

• S phase

• G2 phase

• Mitosis

Multiple Choice

Which of the following is NOT one of the three main phases of the cell cycle?

• Interphase

• Mitosis

• Cytokinesis

• Apoptosis

Multiple Select

Which of the following occur during the Gap 1 (G1) stage of interphase?

Select all that apply

• The cell gets larger

• The cell duplicates its contents

• The cell prepares to divide

• DNA replication occurs

Multiple Select

Which of the following statements about DNA replication are correct?

Select all that apply

• It requires enzymes to unwind the DNA.

• Each new DNA molecule has one old and one new strand.

• The process is called semi-conservative replication.

• Both strands of DNA are completely new after replication.

Multiple Choice

In which phase is DNA replicated?

• G1 phase

• S phase

• G2 phase

• Mitosis

Fill in the Blanks

DNA is made up of subunits called

.

Multiple Choice

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

• Phosphate

• Pentose sugar

• Nitrogen base

• Amino acid

Multiple Choice

According to Chargaff's Rule, which nitrogenous base pairs with cytosine in DNA?

• Adenine

• Thymine

• Guanine

• Uracil

Multiple Select

Which of the following statements about the leading and lagging strands during DNA replication are correct?

Select all that apply

• The leading strand is synthesized continuously.

• The lagging strand is synthesized in fragments.

• Both strands are synthesized in the same direction as the replication fork movement.

Multiple Choice

What are the 3 parts of a nucleotide?

• phosphate, starch, hydrogen bases

• sugar, phosphate, nitrogen base

• nitrogen bases, DNA, sugar

• none of the above

Multiple Choice

Which bases are purines?

• A & T
• C & T
• C & G
• A & G

Multiple Choice

DNA _________________ is the process of copying DNA to prepare for cell division.

• replication

• duplicity

• dynamism

• relocation

Multiple Choice

Identify the correct order of events for DNA Replication.

• 1 - DNA unwinds

  2 - unzips by breaking hydrogen bonds

  3 - adds complementary nucleotides to original strand

  4 - coils up

• 1 - unzips by breaking hydrogen bonds

  2 - coils up

  3 - adds complementary nucleotides to original strand

  4 - DNA unwinds

• 1 - unzips by breaking hydrogen bonds

  2 - DNA unwinds

  3 - adds complementary nucleotides to original strand

  4 - coils up

• 1 - coils up

  2 - adds complementary nucleotides to original strand

  3 - unzips by breaking hydrogen bonds

  4 - DNA unwinds

Multiple Choice

Do all cells within a single organism have the same DNA?

• no, each cell has different DNA because it has differing jobs from other cells

• no, only certain types of cells contain the DNA, which is the blueprint or genetic code for the organism

• yes, differing cells just read different instructions from the DNA, turning genes on and off

• yes, because all cells among any particular species all have the exact same DNA.

Multiple Choice

A T C C G

? ? ? ? ?

Identify the correct complementary nucleotides for the parent strand above.

• A T C C G

• G C T T A

• C G A A C

• T A G G C

Multiple Choice

Which of the following is the longest phase in the cell cycle?

• G1

• G2

• Interphase

• Mitosis

Multiple Choice

G1 phase is the initial ______________ phase.

• growth

• rest

• division

• duplication

Multiple Choice

What important process occurs during the M phase?

• DNA Replication

• Mitosis

• Growth and repair

• Rest and repair