LIFE 102 Exam 2 Erik

Which of the following is NOT a part of the cell membrane?

• Cholesterol

• Phospholipids

• DNA

• Proteins

How are phospholipids oriented in a membrane?

• Hydrophilic tails toward outside and hydrophobic heads toward middle

• Hydrophilic heads toward outside and hydrophobic tails toward middle

• Hydrophobic heads toward middle and hydrophilic tails toward outside

• Hydrophobic heads toward outside and hydrophilic tails toward middle

Which of the following most accurately describes selective permeability?

• There must be a concentration gradient for molecules to pass through the cell membrane

• Only certain molecules can pass through the cell membrane

• An input of energy is required for transport across the cell membrane

• Lipid-soluble molecules can pass through the cell membrane

The movement of a molecule against its concentration gradient is known as...

• Passive transport

• Active transport

• Diffusion

• Catabolism

Which of the following best describes osmosis?

• Movement of water molecules from high to low concentration

• Movement of water from low to high concentration

• Movement of solutes from high to low concentration

• Movement of solutes from low to high concentration

A cell is placed in a HYPOTONIC solution. What is going to happen to the cell?

• Cell will stay the same size

• Cell will shrivel

• Cell will burst

Tags

NGSS.HS-LS1-3

A vesicle buds off of the cell membrane, taking contents into the cell. What type of transport is this?

• Endocytosis

• Exocytosis

• Osmosis

• Cotransport

What is the term for metabolic pathways that release stored energy by breaking down complex molecules?

• Bioenergetic pathways

• Fermentation pathways

• Anabolic pathways

• Catabolic pathways

Tags

NGSS.HS-LS1-7

What is stated by the first law of thermodynamics?

• One form of energy cannot be converted into another form

• Energy can be transformed into other forms of energy, but energy cannot be created or destroyed

• Energy can be transformed into other forms of energy, but the amount of useful energy (free energy) always increases

• New energy is created all the time

Tags

NGSS.HS-PS3-3

Which of the following correctly describes anabolic and catabolic reactions?

• anabolic and catabolic are endergonic

• anabolic and catabolic are exergonic

• anabolic are exergonic while catabolic are endergonic

• anabolic are endergonic and catabolic are exergonic