ap bio unit1

Which property of water allows insects to walk on its surface?

C. Surface Tension

Carbon is important in biology because it…

B. Can form 4 covalent bonds

Nitrogen is a key element in which macromolecule?

B. Proteins

Which cycle moves carbon between organisms and the atmosphere?

B. Carbon cycle

What is the main difference between saturated and unsaturated fatty acids?

A. Saturated has single bonds, unsaturated has double bonds

6. The function of enzymes is to…

B. Speed up chemical reactions by lowering activation energy

7. What is formed when two monosaccharides bond together?

B. Disaccharide

Breaking down polymers into monomers requires…

B. Hydrolysis

Making polymers from monomers requires…

B. Dehydration synthesis

10. The phosphate group in phospholipids is…

C. Hydrophilic

The tails of a phospholipid are…

C. Hydrophobic

Triglycerides are mainly used for…

A. Long-term energy storage

Phospholipids are mainly used for…

A. Building the cell membrane

In DNA, adenine pairs with…

C. Thymine

In RNA, adenine pairs with…

D. Uracil

How many hydrogen bonds are formed between A and T?

B. 2

How many hydrogen bonds are formed between G and C?

C. 3

Which of the following is a difference between DNA and RNA?

B. DNA is double-stranded, RNA is single-stranded

Which sugar is found in DNA?

B. Deoxyribose

Which sugar is found in RNA?

B. Ribose

Which functional group makes a molecule polar?

A. Hydroxyl (-OH)

If an R group contains only carbon and hydrogen, it is…

B. Nonpolar

Which amino acid can form disulfide bonds?

C. Cysteine

Which macromolecule includes fatty acids?

C. Lipids

Which element is part of nucleic acids but not carbohydrates or lipids?

B. Phosphorus

Which cycle involves bacteria converting nitrogen into forms plants can use?

B. Nitrogen cycle