AP BIO Unit 1: Biochemistry

Capillary action is the result of adhesion. Which aspect of water is responsible for this?

• Nonpolar covalent bonds enable water to dissolve other substances.
• Polar covalent bonds join molecules of water to other substances.
• Hydrogen bonds form between water and another substance.
• Ionic bonds enable electrons to flow through water and into another substance.

Why does ice float?

• As water freezes, it expands and its density decreases.
• As water freezes, it takes up more hydrogen from the atmosphere, causing it to have a greater buoyancy.
• As water freezes, air becomes trapped between the hydrogen bonds of water molecules.
• As water freezes, it takes up more oxygen from the atmosphere, causing it to have a greater buoyancy.

Tags

NGSS.MS-PS1-4

The process/reaction used to link compounds/monomers together.  Releases water.

• Dehydration
• Hydrolysis
• Enzomatic
• Tetratonic

Tags

NGSS.HS-LS1-6

NGSS.HS-PS1-2

NGSS.HS-PS1-4

___________ are some functions of lipids.

• storing energy and  cell membrane structure
• providing actin & providing myosin
• cellulose structure and digestive assistance
• storing & transferring genetic info

Changes in pH and temperature can damage an enzyme's active site. What is this called?

• reusable

• catalyst

• specific

• denature

Which of the following elements make up nucleic acids?

• C, H, O
• C, H, O, N
• C, H, O, N, P
• C, H, O, Ca, S

Which of the following is an accurate description of the process shown in Figure 1 ?

• The linking of amino acids with an ionic bond as an initial step in the protein synthesis process

• The formation of a more complex carbohydrate with the covalent bonding of two simple sugars

• The hydrolysis of amino acids with the breaking of covalent bonds with the release of water

• The formation of a covalent peptide bond in a dehydration synthesis reaction

Tags

NGSS.HS-LS1-6

Amino acids all have the same general morphology except for the:

• Amino Group
• Carboxyl Group
• 'R' Group
• Carbonyl Group

Tags

NGSS.HS-LS1-6

Many plant leaves have an outer layer, called the waxy cuticle, that aids in the prevention of dehydration via transpiration. When water falls on the waxy cuticle, it immediately beads up and rolls off. Based on this information, what must be true of the waxy cuticle?

• It is amphiphilic.
• It hydrolyzes the water molecules.
• It is hydrophobic.
• It has catalytic properties.

DNA and RNA are composed of several nucleotide monomers bonded together. Where does this bond occur between two nucleotides?

• Between the sugar and the phosphate
• Between adjacent nitrogenous bases
• Between the sugar and the neighboring nitrogenous base
• Between the phosphate and the neighboring nitrogenous base