DNA, CHROMOSOMES, TRAITS

Which of the following best describes a DNA molecule?

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

Guanine bonds with ______________.

• Adenine
• Guanine
• Cytosine
• Thymine

Why is DNA important?

• it is very small and very complicated
• it's in everything
• it serves as the blueprint for traits of all living things
• because we eat it every day for energy

Which organelle is DNA usually found in?

• cell membrane
• vacuole
• chloroplast
• nucleus

What determines the code, or information, of a DNA molecule?

• the shape (structure) of the nitrogen bases
• the order (sequence) of the nitrogen bases
• the color of the nitrogen bases
• the frequency (number) of nitrogen bases

What is a gene

• A long length of DNA that codes for a chromosome

• A short length of DNA that codes for a chromosome

• A short length of DNA that codes for a protein.

The number of human chromosomes is

• 23

• 46

• 92

• 64

How are similarities passed from parent to offspring?

• through teaching
• through learning
• through blood
• through genes

Which of the following statements about chromosomes is correct?

• Chromosomes are long, thread-like structures

• Chromosomes are found in the nucleus of all cells in the human body

• Chromosomes contain DNA

• All of the above

How many chromosomes are found in each cell of your body (excluding gametes)?

• 46

• 23

• 40

• 45