1. In the process of cellular respiration, glucose is broken down to produce energy. What is the main waste product released?

A. Water
B. Carbon dioxide
C. Oxygen
D. Protein

Correct answer: B

Rationale: The correct answer is B: Carbon dioxide. During cellular respiration, glucose is broken down in the presence of oxygen to produce energy in the form of ATP. One of the main waste products released in this process is carbon dioxide. Carbon dioxide is a byproduct of the metabolic reactions occurring in cells and is expelled from the body through exhalation. Water is also produced during cellular respiration, but it is not the main waste product released. Oxygen is required for cellular respiration to occur, and protein is a macromolecule and not a waste product of cellular respiration.

2. What is the scientific name for the tear gland?

A. Lachrymal gland
B. Lacrimal sac
C. Lacrimal duct
D. Lacrimal papilla

Correct answer: A

Rationale: The lachrymal gland is the almond-shaped gland located above each eye, responsible for producing tears. Tears are a complex mixture of water, electrolytes, proteins, and other substances that help lubricate and protect the eyes from dryness and irritation.

3. A solution is 60% alcohol. If 200ml of the solution are used, how much pure alcohol is present?

A. 100ml
B. 120ml
C. 140ml
D. 160ml

Correct answer: C

Rationale: Multiply the total solution volume (200ml) by the alcohol percentage (60%)

4. Define "friction" in terms of opposing motion.

A. A force that increases motion
B. A force that accelerates motion
C. A force that opposes motion
D. A force that creates motion

Correct answer: c

Rationale: Friction acts opposite to the direction of motion, resisting or slowing down the movement of objects.

5. What is the functional group present in aldehydes?

A. Hydroxyl
B. Carbonyl
C. Ester
D. Amine

Correct answer: B

Rationale: Aldehydes have the functional group -CHO, which is a carbonyl group bonded to a hydrogen atom. The other choices are associated with different functional groups.

6. What is the process by which a fertilized egg implants itself in the lining of the uterus?

A. Fertilization
B. Implantation
C. Gestation
D. Parturition

Correct answer: B

Rationale: The correct answer is B: Implantation. Implantation is the process by which a fertilized egg, or zygote, attaches itself to the uterine wall to establish a pregnancy. Fertilization is the fusion of sperm and egg to form a zygote, which occurs in the fallopian tube. Gestation refers to the period of development of the fetus inside the uterus. Parturition is the process of giving birth. Therefore, implantation specifically refers to the attachment of the fertilized egg to the uterine lining, making it the most appropriate answer in this context.