FREE AFCT General Science: Life and Biological Questions and Answers

Question 1

What is the primary product of photosynthesis that plants use for energy?

Accepted Answer

Glucose

Answer

Photosynthesis uses sunlight, water, and carbon dioxide to create glucose, which is a sugar that provides chemical energy for the plant's metabolic processes. Oxygen is released as a byproduct of this reaction, not used as the primary energy source by the plant.

Question 2

Which organelle is known as the 'powerhouse' of the cell because it generates most of the cell's supply of adenosine triphosphate (ATP)?

Accepted Answer

Mitochondrion

Answer

The mitochondrion is responsible for cellular respiration, a process that converts nutrients like glucose into ATP, the main energy currency of the cell. The nucleus contains the cell's genetic material, and ribosomes are responsible for protein synthesis.

Question 3

What is the term for the observable physical characteristics of an organism?

Accepted Answer

Phenotype

Answer

The phenotype refers to the observable traits of an organism, such as hair color, eye color, and height, which result from the interaction of its genetic makeup (genotype) and the environment. The genotype is the set of genes in an organism's DNA.

Question 4

Which part of the human circulatory system is responsible for pumping oxygenated blood to the rest of the body?

Accepted Answer

Left Ventricle

Answer

The left ventricle is the strongest chamber of the heart, and its powerful contractions pump oxygen-rich blood through the aorta to all parts of the body. The right ventricle pumps deoxygenated blood to the lungs, while the atria are receiving chambers.

Question 5

In a food chain, which trophic level consists of organisms that produce their own food?

Accepted Answer

Producers

Answer

Producers, such as plants and algae, form the base of the food chain by creating their own food from inorganic sources like sunlight through photosynthesis. Primary consumers (herbivores) eat producers, and secondary consumers (carnivores or omnivores) eat primary consumers.

(AFCT) Armed Forces Classification Test Practice Test

(AFCT) Armed Forces Classification Test Practice Test

FREE AFCT General Science: Life and Biological Questions and Answers