Practice Test - DNA Structure & Replication

The arrangement of chemicals in a certain order which code for specific traits of an organism are referred to as DNA.

• True

• False

Section(s) of DNA that contain very specific bits of information (codes) are referred to as:

• Genes

• Gametes

• Carnivores

• Crossing-Over

For organisms within the same species, every organisms will have the same amount of DNA .

• true

• false

For organisms within the same species, every one will have the same number of genes.

• true

• false

For organisms of the same species, the only real difference between them is the order of the DNA which produces different versions of a gene.

• true

• false

Which of the following best describes the shape of DNA, before it's "untwisted"?

• double helix

• single helix

• ladder

• cube

When you untwist the DNA and see it like a ladder, you get to see the sides which form the "backbone", which 2 molecules form the sides?

• phosphate and nitrogenous base

• table sugar and a hydrogen bond

• deoxyribose sugar and nitrogenous base

• deoxyribose sugar and phosphate

The monomer (building blocks) of DNA are called:

• Monosaccharides

• Amino Acids

• Triglycerides

• Nucleotides

Which of the following cell organelles would contain DNA?

• cell membrane

• vacuole

• ribosome

• nucleus

Nucleotides (as seen in the picture) are made of 3 parts, a sugar, a phosphate, and what else?

• nitrogenous base

• nucleic acid

• cholesterol

• fatty acid