DNA- gene - chromosomes

What does DNA do?

• a.  It carries genetic codes from parents to offspring.
• a.  It carries oxygen from the lungs to the body.
• a.  It tells you who you are.
• a.  It defines the organism.

Which organelle is DNA usually found in?

• cell membrane
• vacuole
• chloroplast
• nucleus

How many chromosomes do human cells have?

• 46

• 23

• 2

• 44

What is a gene?

• A bundle (like a hot dog bun) that the DNA is packed into
• something inside the nucleus
• a piece of DNA
• all of your DNA

Bundled up, organized DNA is called a

• gene

• trait

• chromosome

• nucleotide

A long molecule in the shape of a double helix and made up of nucleotides; contains genetic information.

• Deoxyribonucleic acid (DNA)

• ribonucleic acid (RNA)

• chromosome

• gene

The type of weak bond found between the complementary base pairs in a strand of DNA.

• hydrogen bond

• base pair

• nucleotide sequence

• nucleotide

The type of molecule that makes up DNA and RNA; contains a sugar, a phosphate group, and a nitrogenous base.

• nucleotide

• gene

• chromosome

• DNA

Which of the following nitrogenous bases are paired correctly?

• Adenine-guanine

• cytosine-thymine

• adenine-thymine

• guanine-thymine

Which of the following best describes a DNA molecule?

• double helix
• contains ribose
• made of amino acids
• contains Uracil