ERS 2 Quizzizz - Sp25

Which of the following best describes the composition of the lipid bilayer?

• Two layers of phospholipids with hydrophilic heads and hydrophobic tails

• One layer of phospholipids with hydrophobic heads and hydrophilic tails

• Two layers of phospholipids with hydrophobic heads and hydrophilic tails

• One layer of phospholipids with hydrophilic heads and hydrophobic tails

What happens to an animal cell that is placed in a hypertonic solution?

• The cell swells and bursts

• The cell shrinks

• The cell remains the same

_________ transport moves molecules _______ the concentration gradient, ___________ energy input.

• Passive, up, without
• Active, down, with

• Active, up, without

• Passive, down, without

What is the main difference between primary and secondary active transport?

• Primary active transport directly uses ATP, while secondary active transport relies on an existing electrochemical gradient

• Primary active transport moves molecules up the concentration gradient, while secondary active transport moves molecules down the concentration gradient

• Primary active transport does not require energy, while secondary active transport does require energy

• Primary active transport only occurs in plant cells, while secondary active transport only occurs in animal cells

A stretched rubber band is ready to snap. Is this an example of potential energy or activation energy?

• Activation energy

• Potential energy

Which of the following correctly distinguishes the difference between symports, antiports, and uniports?

• Symports move two substances in opposite directions, antiports move one substance at a time, and uniports move two substances in the same direction

• Symports are only used in active transport, while antiports and uniports are only used in passive transport

• Symports move two substances in the same direction, antiports move two substances in opposite directions, and uniports move one substance at a time

Which of the following best describes the difference between competitive and non-competitive inhibitors?

• Competitive inhibitors permanently disable enzymes, while non-competitive inhibitors are reversible

• Competitive inhibitors speed up enzyme activity, while non-competitive inhibitors slow it down

• Competitive inhibitors require ATP, while non-competitive inhibitors slow it down

• Competitive inhibitors bind to the active site, while non-competitive inhibitors bind to an allosteric site

True or false: catabolic reactions break down complex molecules into simpler ones, while anabolic reactions build complex molecules from simpler ones

• True

• False

Tags

NGSS.HS-LS2-3

NGSS.HS-LS2-5

Which of the following best describes the difference between endergonic and exergonic reactions?

• Exergonic reactions require an input of energy, while endergonic reactions release energy and occur spontaneously

• Endergonic reactions absorb free energy and are non-spontaneous, while exergonic reactions release free energy and are spontaneous

• Both endergonic and exergonic reactions release free energy to the surroundings

• Endergonic reactions occur only in living organisms, while exergonic reactions occur only in non-living organisms

If a biochemical reaction has a positive ΔG, what does this imply about the reaction?

• The reaction requires energy input and is considered non-spontaneous

• The reaction is exergonic and can occur spontaneously without energy input

• The reaction releases energy and is always spontaneous

• The reaction does not require or release energy

Tags

NGSS.HS-PS1-4