General Revision Bio41

Why do cells function better when they are small?

• The cell's surface area decreases as it grows

• Cells become more efficient at waste removal as they grow

• The cell's volume decreases more rapidly than its surface area

• Cells have a higher ratio of surface area to volume when small

What is the function of the myelin sheath in nerve impulse transmission?

• Slows down the transmission of nerve impulses

• Increases the speed of nerve impulse transmission

• Prevents nerve impulses from reaching the brain

• Causes nerve impulses to jump randomly

Which part of the neuron is responsible for receiving signals from other neurons?

• Axon

• Cell body

• Dendrites

• Axon terminals

What is the role of the parasympathetic nervous system?

• Decreases heart rate and stimulates digestion

• Increases heart rate and dilates pupils

• Prepares the body for 'fight-or-flight' responses

• Redirects blood flow towards muscles

Which sensory receptor is responsible for detecting light in the eye?

• Rods and cones

• Hair cells

• Taste buds

• Olfactory receptors

What is the function of rods in the human eye?

• Allow color vision and visual acuity

• Signal pain from tissue damage

• Detect light intensity and movement

• Detect changes in temperature

Where are hair cells located in the human ear?

• Around the periphery of the retina

• In the fovea for sharp vision

• In the cochlea for hearing

• In the semicircular canals for balance

What is the main function of the gallbladder in the digestive system?

• Absorbs water and electrolytes

• Produces digestive enzymes

• Stores bile for fat digestion

• Produces bile for fat digestion

Which nutrient is essential for building and maintaining strong bones and teeth?

• Proteins

• Fats

• Calcium

• Vitamin C

How does MyPlate help in designing healthy meals?

• By emphasizing the consumption of unhealthy fats

• By focusing on processed foods

• By promoting excessive calorie intake

• By providing a visual guide for balanced food choices