2023 QCAA Biology Unit 1 Review

Opening that allows gas exchange

• Stomata
• Leaves
• Roots
• Vascular tissue

Nature of A, B and C are

• A and C hydrophobic and B Hydrophilic

• A and C Hydrophilic and B hydrophobic

• A and B Hydrophilic and C is Hydrophobic

• A and B Hydrophobic and C is Hydrophilic

A and B are

• Image is Chicken Lollypop

• A is Hydrophobic Head and B is Hydrophilic Tail

• A is Hydrophilic Head and B is Hydrophobic Tail

• A and B are Hydrophilic in Nature

• Both are Hydrophobic in Nature

In plants, what is the primary function of vacuoles?

• To maintain water pressure inside of the cell.

• To remove waste from inside of the cell.

• To store nutrients inside of the cell.

• To synthesize new membranes for the cell.

Human blood has a pH between 7.35 and 7.45. Which of the following best describes human blood?

• strongly acidic
• slightly acidic
• strongly basic
• slightly basic

Which of the following is a reason that cells are so small?

• Cells are small because they want to maximize their surface area-to-volume ratio.

• Cells are small because they want to maximize their volume-to-surface area ratio.

• Cells are small because they need to produce extremely small macromolecules.

• Cells are small because they prefer to work together in clusters of many thousands that wouldn't otherwise fit anywhere.

Which of the following is one way that cells increase their surface area without increasing their size?

• Cells will often include perfectly spherical membranes.

• Cells will often include folds in their membranes.

• Cells will often include holes in their membranes.

• Cells will maximize their volume.

Which of the following is a difference between passive and active transport?

• Passive transport moves molecules against their gradient, while active transport moves molecules with their gradient.

• Passive transport moves molecules with a direct input of energy, while active transport moves molecules without a direct input of energy.

• Passive transport moves molecules non-spontaneously, while active transport moves molecules spontaneously.

• Passive transport moves molecules without a direct input of energy, while active transport moves molecules with a direct input of energy.

Which of the following describes a solution that has a higher concentration than the internal environment of the cell?

• Hypotonic

• Isotonic

• Hypertonic

• Transtonic

Where does the Krebs Cycle take place?

• mitochondria
• chloroplast
• cytoplasm
• nucleus