AP Biology Unit 7 Vocabulary

Which of the following processes is an "umbrella" term for the others?

• Osmosis.

• Facilitated diffusion.

• Passive transport.

• Transport of an ion down its electrochemical gradient.

Which cell is in a hypertonic environment?

• A

• B

• C

• None of them are hypertonic

Assuming that the purple molecules are too large to pass through the membrane, what would happen to the water level as a result of osmosis?

• The water level would rise on the A side

• The water level would rise on the B side

• The water level would remain constant

• The water level would drop on the A side.

Tags

NGSS.MS-LS2-1

Which of the following factors would tend to increase membrane fluidity?

• a greater proportion of unsaturated phospholipids

• a greater proportion of saturated phospholipids

• a lower temperature

• a relatively high protein content in the membrane

Which of the following membrane activities requires energy from ATP?

• Facilitated diffusion of chloride ions through a chloride channel.

• Movement of Na⁺ ions from lower concentration in a mammalian cell to a higher concentration in the extracellular fluid.

• Movement of glucose molecules into a bacteria cell from a medium containing a higher concentration of glucose than inside the cell.

• Movement of carbon dioxide out of a paramecium.

Tags

NGSS.HS-LS2-4

An animal cell lacking in carbohydrates on the external surface of its plasma membrane would likely be impaired in which function?

• transporting ions against an electrochemical gradient

• cell-cell recognition

• attaching the plasma membrane to the cytoskeleton

• establishing a diffusion barrier to charged molecules

What is the sequence of nucleotides on mRNA read in triplets called?

• anticodon

• codon

• triplet box

• wobble

Protein molecules around which DNA is tightly coiled in chromatin

• Histones

• Whey

• Casein

• Hemoglobin

The parts of a gene that do NOT code for amino acids in a protein are called

• introns

• exons

• codons

• anticodons

The production of mature mRNA in eukaryotes involves

• cutting introns out and spicing exons together

• adding the 5' cap

• adding the 3' poly A tail

• all of these are correct