Exam 2 Review

Osmosis is the movement of _____ across a membrane.

• food
• energy
• oxygen
• water

Which is true about active transport?

• It requires energy
• it does not require energy
• It moves substances down the concentration gradient
• it moves material from high to low concentration

Molecules diffusing with the concentration gradient through a protein channel is...

• Facilitated Diffusion
• Simple Diffusion
• Active Transport
• Osmosis

This cell organelle helps organisms maintain homeostasis by controlling what substances may enter or leave cells.

• vacuole
• nucleus
• cell membrane
• cell wall

Tags

NGSS.HS-LS1-3

What type of transport is this?

• facilitated diffusion
• active transport
• diffusion
• osmosis

Tags

NGSS.MS-LS1-2

The difference in the concentration of a substance from one location to another is called 

• diffusion
• osmosis
• concentration gradient
• passive transport

A molecule that diffuses down a concentration gradient goes from an area of ______ concentration into an area of ______ concentration.

• high, low
• low, high
• passive, active
• active, passive

Tags

NGSS.MS-PS1-2

What biomolecules are NOT used for energy (two answers, choose both before continuing)?

• Carbohydrates

• Lipids

• Proteins

• Nucleic acids

What is a function of lipids?

• To provide short term energy to living organisms

• The provide the structure in muscles

• To provide long term storage of energy

• Storing your genetic information

Which of the following is a carbohydrate?

• DNA

• Protein

• Sugars

• Fats