MCQ in Biological Science Part 12 | Licensure Exam for Teachers Review

This is the MCQ LET Reviewer, Multiple Choice Questions in Biological Science Part 12 as one coverage of Licensure Examinations for Teachers (LET). The exam is divided into two classifications. First is the elementary level exam which covers topics from General Education (GenEd) 40% and Professional Education (ProfEd) 60%. Second is the secondary level, which covers GenEd 20%, ProfEd 40% and area of specialization 40%. I assume you are looking for a reviewer that will help you achieve your goal to become a professional licensed teacher very soon. Yes, you are in the right place to make your dream come true. Make sure to familiarize each and every question to increase the chance of passing the Licensure Examinations for Teachers (LET).

Area of Specialization Coverage

Area of specialization refers to the majorship or the specific field that BSED graduates will handle:

• ENGLISH
• BIOLOGY
• CHEMISTRY
• VALUES
• MATH
• FILIPINO
• SOCIAL STUDIES
• MUSIC, ART, PHYSICAL EDUCATION, and HEALTH or MAPEH
• TECHNOLOGY and LIVELIHOOD EDUCATION
• AGRICULTURE AND FISHERY ARTS

Continue Practice Exam Test Questions Part 10 of the Series

⇐ MCQ in Biological Science Part 11 | Licensure Exam for Teachers Review

Choose the letter of the best answer in each question.

551. Which blood vessel carries oxygenated blood from the lungs to the heart?

A. Pulmonary artery

B. Pulmonary vein

C. Aorta

D. Superior vena cava

552. The process by which a cell divides to form four non-identical daughter cells is called:

A. Mitosis

B. Meiosis

C. Binary fission

D. Budding

553. What is the role of the alveoli in the respiratory system?

A. Filtering air

B. Moistening air

C. Exchanging gases

D. Producing mucus

554. What is the primary function of the nervous system?

A. Producing hormones

B. Coordinating the body’s response to stimuli

C. Transporting oxygen

D. Regulating body temperature

555. What is the primary function of the large intestine?

A. Absorbing nutrients

B. Breaking down fats

C. Absorbing water and electrolytes

D. Producing digestive enzymes

556. Which part of the nervous system controls involuntary actions like heartbeat and digestion?

A. Central nervous system

B. Somatic nervous system

C. Autonomic nervous system

D. Spinal cord

557. Which organ is responsible for filtering waste from the blood?

A. Liver

B. Kidney

C. Spleen

D. Pancreas

558. What is the function of the Eustachian tube in the ear?

A. Transmitting sound vibrations

B. Regulating ear pressure

C. Protecting against infections

D. Producing earwax

559. Which component of the blood is responsible for carrying oxygen?

A. White blood cells

B. Plasma

C. Platelets

D. Red blood cells

560. Which structure connects muscles to bones?

A. Ligaments

B. Tendons

C. Cartilage

D. Joints

561. What part of the eye controls the amount of light entering the pupil?

A. Retina

B. Lens

C. Cornea

D. Iris

562. What is the function of bile in digestion?

A. Breaking down proteins

B. Breaking down fats

C. Absorbing water

D. Neutralizing stomach acid

563. Which structure stores urine before it is excreted?

A. Kidney

B. Ureter

C. Bladder

D. Urethra

564. What is the primary function of the mitochondria in a cell?

A. Producing energy

B. Synthesizing proteins

C. Storing nutrients

D. Transporting waste

565. Which vitamin is essential for blood clotting?

A. Vitamin A

B. Vitamin B12

C. Vitamin C

D. Vitamin K

566. Which gland produces the hormone adrenaline?

A. Thyroid gland

B. Adrenal gland

C. Pituitary gland

D. Pancreas

567. What is the largest blood vessel in the human body?

A. Aorta

B. Pulmonary vein

C. Superior vena cava

D. Coronary artery

568. Which organ produces insulin?

A. Liver

B. Pancreas

C. Kidney

D. Spleen

569. What is the function of the diaphragm in breathing?

A. Filtering air

B. Pumping blood

C. Expanding and contracting to aid respiration

D. Absorbing oxygen

570. What is the primary function of the spleen?

A. Producing bile

B. Filtering blood and recycling red blood cells

C. Producing insulin

D. Storing energy

571. Which of the following is the primary function of white blood cells (WBCs)?

A. Transport oxygen

B. Fight infections

C. Produce energy

D. Aid in digestion

572. Which type of blood vessel carries blood away from the heart?

A. Artery

B. Vein

C. Capillary

D. Venule

573. What is the role of platelets in the blood?

A. Transport nutrients

B. Carry oxygen

C. Aid in blood clotting

D. Fight infections

574. The largest part of the brain is called the:

A. Cerebellum

B. Cerebrum

C. Brainstem

D. Medulla oblongata

575. The process by which a cell becomes specialized to perform a specific function is called:

A. Mitosis

B. Differentiation

C. Meiosis

D. Mutation

576. The process by which the body maintains a stable internal environment is called:

A. Digestion

B. Homeostasis

C. Metabolism

D. Circulation

577. Which of the following is the largest organ in the human body?

A. Heart

B. Skin

C. Liver

D. Brain

578. What is the largest and strongest bone in the human body?

A. Humerus

B. Tibia

C. Femur

D. Radius

579. Which part of the heart pumps oxygenated blood to the rest of the body?

A. Right atrium

B. Right ventricle

C. Left atrium

D. Left ventricle

580. Which vitamin is essential for calcium absorption in the body?

A. Vitamin A

B. Vitamin B12

C. Vitamin C

D. Vitamin D

581. Which of the following organisms uses chemosynthesis to produce energy?

A. Green plants

B. Fungi

C. Some bacteria

D. All of the above

582. Which blood component carries nutrients, hormones, and waste products?

A. Plasma

B. Red blood cells

C. White blood cells

D. Platelets

583. What part of the digestive system absorbs most nutrients?

A. Stomach

B. Large intestine

C. Small intestine

D. Esophagus

584. What type of joint is found in the shoulder and hip, allowing a wide range of movement?

A. Hinge joint

B. Ball-and-socket joint

C. Pivot joint

D. Gliding joint

585. Which blood vessel carries deoxygenated blood to the lungs?

A. Aorta

B. Pulmonary artery

C. Pulmonary vein

D. Superior vena cava

586. What is the primary function of the liver in digestion?

A. Producing digestive enzymes

B. Breaking down proteins

C. Producing bile

D. Storing minerals

587. Which part of the brain controls involuntary actions like breathing and heart rate?

A. Cerebellum

B. Medulla oblongata

C. Cerebrum

D. Thalamus

588. Which organ in the body produces red blood cells?

A. Spleen

B. Liver

C. Bone marrow

D. Kidney

589. Which of the following is a function of the skeletal system?

A. Producing red and white blood cells

B. Producing insulin

C. Digestion of food

D. Regulating body temperature

590. Which vitamin helps improve vision?

A. Vitamin A

B. Vitamin B12

C. Vitamin D

D. Vitamin K

191. Which of the following is the first organ to form during embryonic development?

A. Brain

B. Heart

C. Liver

D. Lungs

592. The structure responsible for regulating the passage of substances between the stomach and the small intestine is called the:

A. Pyloric sphincter

B. Cardiac sphincter

C. Ileocaecal valve

D. Anal sphincter

593. The ability of the body to fight off infections and diseases is known as:

A. Immunity

B. Reflex

C. Adaptation

D. Homeostasis

594. Which of the following hormones regulates the metabolism of carbohydrates, fats, and proteins?

A. Insulin

B. Cortisol

C. Thyroxine

D. Adrenaline

595. Which of the following bones is part of the axial skeleton?

A. Humerus

B. Femur

C. Sternum

D. Radius

596. Which of the following is the largest lymphatic organ in the human body?

A. Thymus

B. Tonsils

C. Lymph nodes

D. Spleen

597. Which hormone is produced by the adrenal glands during stress?

A. Thyroxine

B. Insulin

C. Cortisol

D. Estrogen

598. Which part of the neuron transmits electrical impulses away from the cell body?

A. Dendrites

B. Axon

C. Synapse

D. Myelin sheath

599. Which part of the eye controls the size of the pupil?

A. Retina

B. Iris

C. Cornea

D. Lens

600. Which of the following is the most abundant element in the Earth’s crust?

A. Oxygen

B. Silicon

C. Carbon

D. Nitrogen

LET REVIEW MATERIALS