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 Blank

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

.

Fill in the Blank

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 Blank

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