Start learning →

RRB NTPC General Science and Life Science — practice questions — page 2

Explore 62 free General Science and Life Science questions in RRB NTPC Science. Open each question or exercise to read its content, reference answers and available explanation.

Practise General Science and Life Science with Quill →

General Science and Life Science questions and exercises with answers

Showing questions 31–60 of 62.

Which iron-bearing protein reversibly binds oxygen for transport in blood?Read the answer and worked solution →In biological and clinical terminology, red blood cells are formally referred to asRead the answer and worked solution →What is the formal medical designation applied to white blood cells of the human immune system?Read the answer and worked solution →Which cellular fragments circulating in mammalian blood are directly involved in coagulation and clot formation?Read the answer and worked solution →What is the standard physiological pH range maintained in healthy human arterial blood?Read the answer and worked solution →What is the standard circulatory lifespan of a healthy human red blood cell before it is degraded?Read the answer and worked solution →How are vital metabolic fuels such as glucose and amino acids distributed to peripheral body tissues?Read the answer and worked solution →Exposure to carbon monoxide gas leads to acute poisoning through the formation of which toxic complex?Read the answer and worked solution →The distinctive bright red appearance of arterial blood in humans is attributable to oxygen binding withRead the answer and worked solution →Which medical condition is defined by insufficient red cell mass or low hemoglobin values?Read the answer and worked solution →Which lymphoid organ acts in conjunction with hepatic Kupffer cells to filter and destroy aged erythrocytes?Read the answer and worked solution →Which green photoreceptor pigment is primarily utilized by terrestrial plants to absorb solar radiation?Read the answer and worked solution →During photosynthesis, oxygen is released by the photolytic splitting ofRead the answer and worked solution →Through which microscopic foliage pores do plants regulate leaf gas exchange?Read the answer and worked solution →What is the common scientific name given to the light-independent enzymatic pathway that fixes carbon dioxide?Read the answer and worked solution →In plant chloroplasts, where is the light-absorbing pigment system embedded?Read the answer and worked solution →What is the name of the aqueous enzymatic fluid enclosed within the chloroplast membrane surrounding thylakoids?Read the answer and worked solution →Which gaseous molecule is drawn from the ambient atmosphere by plants to synthesize organic sugars?Read the answer and worked solution →What gas is released into the biosphere as a metabolic byproduct of plant photosynthesis?Read the answer and worked solution →Which chemical compound acts as the ultimate electron donor in oxygenic photosynthesis?Read the answer and worked solution →What primary external energetic input fuels the chemical transformations occurring in plant photosynthesis?Read the answer and worked solution →In the Calvin cycle, atmospheric carbon dioxide is initially fixed into which acceptor molecule?Read the answer and worked solution →What physical property describes the tendency of matter to resist any modification to its velocity or state of rest?Read the answer and worked solution →Isaac Newton's First Law of Motion is universally known in classical mechanics as the law ofRead the answer and worked solution →According to Newton's Second Law, the rate of change of momentum of a body is proportional to theRead the answer and worked solution →In classical mechanics, linear momentum is defined as the product of mass andRead the answer and worked solution →Newton's Third Law states that every action force has an equal and oppositeRead the answer and worked solution →In Newton's Third Law, the paired action and reaction forces always act uponRead the answer and worked solution →Newton's Third Law is directly related to the conservation of what quantity?Read the answer and worked solution →What dynamic physical quantity was referred to by Sir Isaac Newton using the Latin term motus (motion)?Read the answer and worked solution →

Worked practice questions

Which iron-bearing protein reversibly binds oxygen for transport in blood?

  1. Albumin
  2. Hemoglobin
  3. Myoglobin
  4. Transferrin
Show answer and solution

Correct answer: B. Hemoglobin

Hemoglobin is an iron-containing metalloprotein inside red blood cells that transports oxygen to body tissues.

Open this question →

In biological and clinical terminology, red blood cells are formally referred to as

  1. Leukocytes
  2. Thrombocytes
  3. Erythrocytes
  4. Granulocytes
Show answer and solution

Correct answer: C. Erythrocytes

Erythrocytes is the standard scientific term designated for circulating red blood cells.

Open this question →

What is the formal medical designation applied to white blood cells of the human immune system?

  1. Erythrocytes
  2. Thrombocytes
  3. Osteocytes
  4. Leukocytes
Show answer and solution

Correct answer: D. Leukocytes

White blood cells are collectively termed leukocytes, which defend the host organism against pathogens and foreign matter.

Open this question →

How to practise

  1. Choose a General Science and Life Science question and try to work out your answer.
  2. Open the question to check the correct answer and read its worked solution.
  3. Continue in the app for bite-sized lessons, explanations and review with Quill. You can start without creating an account.

Put it into practice

Continue with General Science and Life Science practice for RRB NTPC. Read explanations as you go. No signup form needed to start.

Practise General Science and Life Science →

More Science topics

Science & TechnologyIndian Space Research OrganisationEnvironmental & Disaster Management