1. Which part of the brain is responsible for processing vision?

A. Occipital lobe
B. Frontal lobe
C. Temporal lobe
D. Parietal lobe

Correct answer: A

Rationale: The correct answer is A: Occipital lobe. The occipital lobe is located at the back of the brain and is primarily responsible for processing visual information. It contains the primary visual cortex, which receives and interprets visual signals from the eyes. The frontal lobe (B) is involved in higher cognitive functions such as decision-making and problem-solving. The temporal lobe (C) plays a role in processing auditory information and memory. The parietal lobe (D) is responsible for functions like spatial awareness and sensory information processing, but not specifically vision. Therefore, the occipital lobe is the correct choice for the brain region responsible for processing vision.

2. What part of speech is the underlined word in the sentence "The students eagerly awaited the results"?

A. Verb
B. Noun
C. Adjective
D. Adverb

Correct answer: B

Rationale: Option B identifies "results" as the direct object of the verb "awaited," making it a noun.

3. Which part of the nervous system is responsible for transmitting signals from the sensory organs to the central nervous system?

A. Autonomic nervous system
B. Somatic nervous system
C. Peripheral nervous system
D. Central nervous system

Correct answer: C

Rationale: The correct answer is C: Peripheral nervous system. The peripheral nervous system is responsible for transmitting signals from the sensory organs to the central nervous system. It consists of nerves outside of the brain and spinal cord that carry information to and from the central nervous system. The autonomic nervous system (A) regulates internal bodily functions, the somatic nervous system (B) controls voluntary movements, and the central nervous system (D) includes the brain and spinal cord where processing of signals occurs, rather than transmitting signals from the sensory organs.

4. A ball is rolling across the floor and comes to a stop on its own. What force caused the ball to stop?

A. Gravitational force
B. Normal force from the floor
C. Air resistance
D. None of the above

Correct answer: C

Rationale: In the absence of other forces, air resistance will gradually slow down the ball until it stops.

5. What are chromosomes made of?

A. DNA and RNA
B. DNA and proteins
C. Proteins and carbohydrates
D. DNA only

Correct answer: B

Rationale: Rationale: Chromosomes are structures found in the nucleus of cells that contain genetic material. They are made up of DNA (deoxyribonucleic acid), which carries the genetic information, and proteins that help in the organization and packaging of the DNA. While RNA is involved in various cellular processes, it is not a major component of chromosomes. Carbohydrates are not a significant component of chromosomes. Therefore, the most accurate answer is B) DNA and proteins.

6. Which of the following joints allows for side-to-side bending movements?

A. Hinge joint
B. Ball-and-socket joint
C. Gliding joint
D. Saddle joint

Correct answer: C

Rationale: The correct answer is C: Gliding joint. Gliding joints are found where the bones meet and allow for limited side-to-side and back-and-forth movements. These joints have flat or slightly curved surfaces that glide against each other, enabling smooth motion in multiple directions. Hinge joints (A) allow for movement in one plane like a door hinge, ball-and-socket joints (B) allow for a wide range of motion in multiple directions, and saddle joints (D) allow for back-and-forth and side-to-side movements but are primarily designed for flexion and extension like the joint at the base of the thumb.