Biology

Human Physiology and Anatomy

2,062 Questions

Human physiology and anatomy explore the structural organization and biological functions of the human body and its systems. Questions focus on the primary roles of organs, hormones, cellular components, and developmental processes. These fundamentals are integral to medical entrance tests and general science sections.

Organ functionsHormone functionsImmune system rolesDigestive systemCellular functions

Human Physiology and Anatomy Questions

Multiple choice biology digestion and absorption liver functions of the liver secretory organs

What is the important function of bile ________________.

  1. For digestion by emulsification of fats

  2. Elimination of excretory products

  3. For digestion by enzymes

  4. Coordination of digestive activities
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Bile's primary function is the emulsification of fats, which increases the surface area for lipase to act upon, facilitating digestion.

Multiple choice biology digestion and absorption liver functions of the liver secretory organs

Which of the following is not a function of the liver in adults?

  1. Make red blood cells

  2. Produce urea

  3. Store glucose

  4. Produce bile
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
The liver performs a variety of functions such as synthesis, storage and secretion of various substances. The functions performed by the liver are:
  • The liver secretes bile juice.
  • The liver plays a key role in carbohydrates metabolism, in lipid metabolism.
  • It also helps in deamination of proteins and conversion of ammonia into urea.
  •  It is the chief organ of detoxification of toxic substances in food.
  • It acts as a thermoregulatory organ like skeletal muscle. as it has high glucose at its disposal.
  • It acts as a haematopoietic organ in the foetus and erythroclastic organ i.e. destruction of the red blood cells in the adult. Hence, Making of red blood cells is not a function of the liver in adults.
So, the correct answer is 'make red blood cells'.
Multiple choice botany kingdom plantae introduction to pteridophytes cryptogams pteridophyta pteridophytes

Function of vascular tissue is 

  1. To conduct water

  2. To conduct food, salts, minerals

  3. To provide strength

  4. Both A and B
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Vascular tissues are also known as conductive tissue, they help to conduct water and other substances from one part of the plant body to another. For example, ferns contain two types of vascular tissue, xylem and phloem, which move nutrients throughout the plant and allow them to grow tall. 

Multiple choice

What is the purpose of nuclear pores?

  1. It prevents material from entering the nucleus.

  2. It allows DNA to leave the nucleus and enter the cytoplasm.

  3. It allows DNA to replicate.

  4. It allows material to move in and out of the nucleus.
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Nuclear pores are protein channels in the nuclear envelope that regulate the exchange of molecules, such as RNA and proteins, between the nucleus and the cytoplasm.

Multiple choice

What is the function of a lysosome?

  1. help organize cell division

  2. store materials in the cell

  3. modify, sort and package proteins and other cell materials

  4. break down macromolecules and non-functioning organelles
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Lysosomes contain digestive enzymes that break down waste materials, cellular debris, and foreign substances. They are essentially the recycling centers of the cell.

Multiple choice

What function do alveoli perform?

  1. the exchange of lymph between air and lymph nodes

  2. the exchange of blood between the heart and lungs

  3. the exchange of gases between the lungs and the bloodstream

  4. the removal of water from oxygen
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Alveoli are the sites where oxygen enters the bloodstream and carbon dioxide leaves the bloodstream through the process of diffusion.

Multiple choice

Which of the following best describes the function of respiration?

  1. to break food down into smaller nutrients

  2. to eliminate pathogens from the blood

  3. to obtain oxygen & release carbon dioxide

  4. to remove wastes from the bloodstream
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Respiration is the physiological process of gas exchange, specifically taking in oxygen for cellular use and expelling carbon dioxide as a waste product.

Multiple choice

Which answer best describes the function of the circulatory system?

  1. it removes wastes from cells & delivers nutrients to cells

  2. it breaks down nutrients in foods for cell use

  3. it produces chemicals that allow the body to communicate

  4. it coordinates all body parts to achieve homeostasis
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The primary function of the circulatory system is to transport oxygen, nutrients, and hormones to cells while removing waste products like carbon dioxide.

Multiple choice

What does the ciruclatory system do?

  1. Used to breakdown food, absorb nutrients and remove waste

  2. Used to bring oxygen into the body and remove carbon dioxide

  3. Takes food & oxygen cells and carry waste away from cells

  4. Used to transmit nerve impulses between parts of the body.
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The circulatory system is responsible for transporting oxygen, nutrients, and hormones to cells throughout the body, as well as carrying away metabolic waste products like carbon dioxide. Other systems, such as the digestive and respiratory systems, handle food breakdown and gas exchange with the external environment.

Multiple choice

The main function of protein is to?

  1. carry vitamins to the cells

  2. building and repair of tissue

  3. it is the main source of energy to the brain

  4. helps to absorb minerals in the body
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Protein is essential for the growth, maintenance, and repair of all body tissues, including muscles, skin, and organs. While it can be used for energy in extreme circumstances, carbohydrates are the body's primary energy source, and other nutrients handle vitamin transport and mineral absorption.

Multiple choice

Which one isn't a function of carbohydrates

  1. they are the immediate energy for cellular activities

  2. they serve as short term energy storage

  3. used as long term energy storage

  4. they provide structural support in plants
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Carbohydrates are used for immediate energy (glucose) and short-term energy storage (glycogen in animals, starch in plants), as well as structural support in plants (cellulose). Long-term energy storage is primarily the function of lipids (fats).