Biology

Human Physiology and Anatomy

2,235 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 respiration in living organisms breathing in plants mode of respiration in plants process of respiration

Which of the following is the main purpose of respiration in plants?

  1. Breaking of complex food into simple ones

  2. Production of energy

  3. Exchange of gases

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

Cellular respiration is the process by which cells in plants and animals break down sugar and turn it into energy, which is then used to perform work at the cellular level. The purpose of cellular respiration is simple, it provides cells with the energy they need to function. If living things could not get the energy they need out of food, it would be absolutely worthless. All living things would eventually die, no matter the quality and amount of food. Cellular respiration is used to create usable energy from the foods that living things eat. It's important to know that the reactions involved in cellular respiration are catabolic, meaning they break down molecules into smaller ones. This differs from anabolic reactions, which build bigger molecules from smaller ones. 

So, the correct option is 'Both A and B'.

Multiple choice temperature control homeostasis coordination and response biology

Homeostasis is the process which regulates

  1. Formation of food

  2. External environment

  3. Metabolism regulation

  4. Internal environment
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Homeostasis is the ability of an open system to regulate its internal environment to maintain stable conditions by means of multiple dynamic equilibrium adjustments controlled by interrelated regulation mechanisms. All living organisms, whether unicellular or multicellular exhibit homeostasis. Therefore, the correct answer is option D.

Multiple choice temperature control homeostasis coordination and response biology

Homeothermy in humans is maintained through 

  1. Negative feed-back loop

  2. Thermoreceptors

  3. Cold receptors

  4. Warm receptors
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Homeothermy (the maintenance of a constant internal body temperature) is regulated by negative feedback loops, where the body detects deviations from the set point and initiates physiological responses to return to that set point.

Multiple choice temperature control homeostasis coordination and response biology

Which of the following process keeps the body constant?

  1. Transduction

  2. Homeostasis

  3. Feedback control

  4. All of the above
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Homeostasis is the ability of an organism to maintain a constant internal environment. Homeostasis is maintained by the hypothalamus with the help of negative feedback loops that counteract changes of many characteristics from their set points. For example, when there is a rise in body temperature a negative feedback loop will bring it back to normal towards the set point of 37.5$^o$ C. Hence homeostasis is necessary for the well-being of individual cells and of the entire body. Thus the correct answer is option B.

Multiple choice zoology nervous system neural tissue structure of neuron nervous tissues

Which of the following horn has spinal cord tract?

  1. Anterioar horn

  2. Posterior horn

  3. White matter

  4. Gray matter
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
Posterior horn is a part of grey matter that has spinal cord tract. It receives the sensory information like touch and sensation via sensory neurons from different parts of the body.  It is also known as dorsal horn due to its presence in dorsal side of the body. 
So the correct answer is 'Posterior horn'.
Multiple choice biology nutrition and diet nutrients and foodstuffs introduction to nutrients nutrition and its deficiency simple test for nutrients test for nutrients

Which of the following is the function of nutrients?

  1. It regulates the growth and developement of the body.

  2. It helps in digestion.

  3. It helps in the energy production.

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

An essential nutrient is a nutrient that the body cannot synthesize on its own  or not to an adequate amount and must be provided by the diet. These nutrients are necessary for the body to function properly. The six essential nutrients include carbohydrates, protein, fat, vitamins, minerals and water. Carbohydrates are the main energy source for the brain. Protein is the major structural component of cells and is responsible for the building and repair of body tissues. Fat is an energy source that when consumed, increases the absorption of fat-soluble vitamins including vitamins A, D, E and K. 

So, the correct option is 'All of the above'.

Multiple choice disorders of muscular system disorders of muscle and skeleton movement and locomotion in man locomotion and movements biology

Secretion of abnormal pannus is seen in which of the following abnormalities?

  1. Rheumatoid arthritis

  2. Gout

  3. Osteoporosis

  4. Osteo arthritis
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
Rheumatoid arthritis is an autoimmune disease that mainly effect joints. It typically results in warm, swollen and painful joints. Secretion of abnormal granules pannus is seen in this disease.
So the correct option is 'Rheumatoid arthritis'.
Multiple choice disorders of muscular system disorders of muscle and skeleton movement and locomotion in man locomotion and movements biology

Inflammation of synovial membrane produces

  1. Gout

  2. Rheumatoid arthritis

  3. Dislocation

  4. Osteoarthritis
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
Rheumatoid Arthritis is an autoimmune disease that particularly affects the synovial membrane of joints leading to excessive production of synovial fluid thereby stretching the joint capsule causing joint pains.
Osteoarthritis is an inflammation and damage of the articular cartilages of joints causing joint pains. It does not primarily affect the synovial membrane.
Gout or Hyperuricaemia is an excessive amount of uric acid in blood leading to the accumulation of urate crystals in the joints causing joint pains.
Dislocation of the joint is a condition where the bone slips out of the joint due to an injury.

So, the correct answer is 'Rheumatoid arthritis'.
Multiple choice chemistry the s-block elements (alkali and alkaline earth metals) biological importance of sodium and potassium biological importance of elements biological importance of s block elements biological importance of magnesium and calcium

Which are involved in various physiological functional in animals?

  1. $Na^{+}$
  2. $K^{+}$

  3. Both (a) and (b)

  4. None of these
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

$Na^{+}$,$K^{+}$,$Mg^{+2}$ and $Ca^{+2}$ ions are concentrated in animals.

Multiple choice evs substances in daily use can all changes be reversed? substances and objects changes around us

Human life require which kind of material for leaving?

  1. Food

  2. Fuel

  3. Home

  4. All of these
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
Food is something that provides nutrients. 

Nutrients are substances that provide: energy for activity, growth, and all functions of the body such as breathing, digesting food, and keeping warm; materials for the growth and repair of the body, and for keeping the immune system healthy.

Fossil fuels are used to fuel cars and aeroplanes, power electricity plants, and heat our homes. 

They are also used to make medicines, cosmetics, plastics, synthetic fabrics, and lubricants. When you brushed your teeth today, you used a product made from oil – toothpaste.

We need a home as it gives shelter and security.

Hence the option D is correct.

Multiple choice biology neural control and coordination structure of muscle skeletal muscles locomotion and movements

Which of the following is called as stimulus?

  1. Light

  2. Temperature

  3. Sound

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
  • The stimulus(singular) is any change in the organism's internal or external environment that causes the organism to react. It is of two types external and internal.
  • External stimulus is the stimulus that comes outside of the organism. For example, Light stimulus, heat stimulus, chemical stimulus, sound stimulus, etc.
  • The internal stimulus is the stimulus that comes from inside an organism. For example, Hunger, thirst, etc.
  • So, the correct answer is 'All of the above'.
Multiple choice biology excretion - the wastage disposing system artificial kidney kidney transplant disorders of kidney

The compatibility between the donor and the recipient is decided on the basis of 

  1. Blood group matching.

  2. HLA matching.

  3. Rh factor matching.

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

As established in previous questions, both blood group matching and HLA matching are fundamental requirements for determining the compatibility between a donor and a recipient for a kidney transplant.