Intro to Genetics-English

What information does DNA primarily code for in an organism?

• Environmental conditions

• Traits

• Cell size

• Energy production

Where is an organism's DNA primarily located?

• In the cytoplasm of all cells

• In the nuclei of nearly all body cells

• Only in reproductive cells

• Scattered throughout the organism's tissues

Are you enjoying the video lesson?

• Yes

• No

What does DNA stand for?

• Deoxyribonucleic Acid

• Dihydroxyribonucleic Acid

• Deoxyribose Nucleic Acid

• Dioxynucleic Acid

Which of the following are the three main components of a nucleotide?

• Sugar, protein, and lipid

• Sugar, phosphate, and nitrogenous base

• Phosphate, protein, and nitrogenous base

• Sugar, lipid, and nitrogenous base

Which of the following is NOT one of the four nitrogenous bases found in DNA?

• Adenine

• Guanine

• Uracil

• Cytosine

What type of bond holds the complementary base pairs together in the middle of a DNA double helix?

• Covalent bonds

• Ionic bonds

• Hydrogen bonds

• Peptide bonds

What is the primary function of genes in relation to proteins?

• Genes transport proteins across cell membranes.

• Genes act as enzymes to break down proteins.

• Genes code for the production of proteins.

• Genes provide structural support for proteins.

How many chromosomes are typically found in a human body cell?

• 23

• 46

• 92

• 12