Question 1

Which of the following is NOT a property shared by all living things according to the study materials?

Accepted Answer

Ability to photosynthesize

Question 2

Which of the following best explains why water is considered a good solvent for salts?

Accepted Answer

Water is polar, allowing it to surround and separate ions

Question 3

Which of the following statements about viruses is supported by the study materials?

Accepted Answer

Viruses are not considered alive by most biologists because they lack all properties of life

Question 4

Which molecule is able to form four covalent bonds, making it a key element in biological macromolecules?

Accepted Answer

Carbon

Question 5

Which of the following is a correct pairing of a biological macromolecule and its monomer?

Accepted Answer

Carbohydrate – Monosaccharide

Question 6

A patient is diagnosed with phenylketonuria (PKU). Which of the following best describes the metabolic defect in this disorder?

Accepted Answer

Deficiency of the PAH enzyme, leading to accumulation of phenylalanine

Question 7

Which of the following best describes the structure of a phospholipid in a cell membrane?

Accepted Answer

A hydrophilic head and two hydrophobic tails

Question 8

Which of the following is a function of cholesterol in animal cell membranes?

Accepted Answer

It maintains membrane fluidity

Question 9

Which of the following best explains why oil and vinegar separate when mixed?

Accepted Answer

Oil is hydrophobic and does not mix with polar molecules like vinegar

Question 10

Which of the following is a polysaccharide used by animals to store energy?

Accepted Answer

Glycogen

Question 11

Which of the following best describes the role of enzymes in metabolism?

Accepted Answer

Enzymes speed up chemical reactions without being changed themselves

Question 12

Which of the following is a correct sequence of events in the human digestive system?

Accepted Answer

Ingestion → Digestion → Absorption → Elimination

Question 13

Which of the following best explains why cellulose is important in the human diet even though humans cannot digest it?

Accepted Answer

Cellulose acts as dietary fiber, aiding in digestion

Question 14

Which of the following is a real-life example of a hydrophilic substance?

Accepted Answer

Alcohol

Question 15

Which of the following best describes the difference between prokaryotic and eukaryotic cells?

Accepted Answer

Eukaryotic cells have membrane-bound organelles; prokaryotic cells do not

Question 16

Which of the following is a correct chemical formula for glucose?

Accepted Answer

$$\mathrm{C_6H_{12}O_6$}$$

Question 17

Which of the following best describes the process of peristalsis?

Accepted Answer

Muscle contractions that move food through the digestive tract

Question 18

Which of the following is a function of the accessory organs in the digestive system?

Accepted Answer

They secrete digestive chemicals into the alimentary canal

Question 19

Which of the following best explains why a reduction in sugary drinks is recommended in the Canada Food Guide?

Accepted Answer

Scientific evidence shows that reducing sugary drinks lowers the risk of obesity and related diseases

Question 20

Which of the following best describes the role of homeostasis in living organisms?

Accepted Answer

Homeostasis allows organisms to maintain a stable internal environment

Metabolism, Biological Molecules, and Disorders: Study Notes for General Biology

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