Exam Rev. DNA Unit

Which of these defines mitosis?

• Divides the nucleus

• Divides the entire cell

• Copies chromosomes

• Copies organelles

If one side of the DNA is TCAGCTTTA, what DNA would bond to it on the other side?

• A G A C G A A A T

• A C T C G A A A C

• A G T C G A A A T

• None of these is correct

DNA carries a code on the nitrogen bases to make proteins. Why does it code for proteins & not other polymers?

• Proteins are easier to make

• Proteins are needed for energy

• Proteins fit better to the DNA

• Proteins can make any polymer your cell needs

Why do cells need to do replication?

• To make enzymes

• So new cells can have a copy of DNA

• So new cells can have a copy of the organelles

• To get information out of the nucleus

What is happening during telophase of the cell cycle?

• Two new nuclei form

• The sister chromatids line up

• The nuclear membrane disappears

• The cell membrane divides

Which type of mutation changes the swaps one nitrogen base for another?

• Deletion

• Substitution

• Replication

• Insertion

Which of these is a reason cells undergo mitosis. Pick ALL that apply.

• To replace damaged cells

• To mix the genes to get genetic diversity

• So the organism can grow

• To make enzymes

Making two identical copies of DNA is called __________.

• Duplication

• Transcription

• Translation

• Replication

Which is the correct order for the steps of replication?

• Add to it, unzip it, unwind it, connect it

• Unzip it, Unwind it, add to it, connect it

• Unwind it, add to it, connect it, unzip it

• Unwind it, unzip it, add to it, connect it

How do the two daughter cells of mitosis compare to the original they came from? Pick ALL that apply.

• They have 1/2 as much DNA

• They are exactly like the parent cells

• The DNA has done crossing over

• There are two cells instead of one