AP Biology Unit 1 Review

Which of the following statements reguarding carbon is false?

• Carbon has the capacity to form polar covalent bonds with hydrogen

• Carbon has the ability to form covalent bonds with up to 4 other atoms

• Carbon has the capacity to form single and double bonds

• Carbon has the ability to bond together to form extensive "carbon skeletons"

Tags

NGSS.HS-LS1-6

Because of the unique properties of water associated with hydrogen bonding, water evaporates from pores on the leaves of plants and draws water molecules in a continuous chain from the roots up through the vascular tissues of plants. Which of these groups of terms describes the process and the properties of water that explain this?

• adhesion, cohesion, and translocation

• adhesion, cohesion, and transcription

• cohesion, adhesion, and transpiration

• cohesion, hybridization, and transpiration

Match the following molecular terms:

• A secondary structure of proteins

• Peptide bonds

• The major class of biological molecules that are not polymers

• Cellulose

• Linkages between the monomers of proteins

• Alpha helix

• A structural carbohydrate found in plants

• Lipids

Hydrolysis is involved in which of the following?

• formation of starch, a polysaccharide, from monomers of glucose

• hydrogen bond formation between nitrogen bases of nucleic acids

• peptide bond formation between amino acids to form a protein

• the digestion of sucrose, a disaccharide, into its monomers of glucose and fructose

Which of the macromolecules below could form structural parts of the cell, be enzymes, or be involved in cell movement?

• nucleic acids

• proteins

• lipids

• carbohydrates

Tags

NGSS.HS-LS1-6

An organic compound that is composed of carbon, hydrogen, and oxygen in a 1:2:1 ratio is known as a ​ (a)   .

• carbohydrate
• protein
• lipid
• nucleic acid

The plasma membrane is composed of several different macromolecules. Which macromolecule serves as the fluid interface between the intracellular and extracellular environments?

• proteins

• phospholipids

• carbohydrates

• cholesterol

The partial negative charge at one end of a water molecule is attracted to a partial positive charge of another water molecule. Water is this type of attraction called?

• a hydrogen bond

• an ionic bond

• a polar covalent bond

• a hydration shell

Tags

NGSS.HS-ESS2-5

Which of the following biological macromolecules contains phosphorous?

• Nucleic acids

• Carbohydrates

• Proteins

• Lipids

What type of bond is primarily responsible for the secondary structure of proteins?

• Hydrogen bonds

• Ionic bonds

• Covalent bonds

• Disulfide bonds