About Biology

Life abounds everywhere you look, from the frozen Arctic to the scorching Saharan desert. In addition, Earth is the only planet in the cosmos where life has been found, as evidenced by the over 8.7 million species that have been identified.

Advances in technology have allowed us to get new insights into the workings of the human body and its components. Viruses, for example, have prompted scientists to rethink their conceptions of life and open their minds to new possibilities.

Origins as a Field of Study

Knowledge of plants and animals was a life or death matter for the early people. As a result, a wealth of information about various animals, their habits, and anatomical structures was passed down down the centuries.

When humans began cultivating crops and mastered agriculture, it was the greatest significant breakthrough in biological knowledge to yet.

Aristotle's writings, medical traditions, and the collective wisdom of physicians eventually led to the development of biology as a discipline.

It was during the 19th century that a slew of groundbreaking discoveries and technical advancements in the field of biology were made.

Definition

Anatomy and physiology are two aspects of the study of biology that are closely related. The study of living beings is referred to as biology.

Branches of Biology

The fascinating features of biology are addressed by a variety of sub-disciplines or fields. Some fields of science are connected with others.

If you're interested in finding out more about the fundamental principles of life, theoretical biology is a useful area of study for you.

Quantum Biology is concerned with biological processes that are quantum mechanical in nature, such as the transformation of energy. There are many more branches of biology, including:

  • Immunology
  • Biotechnology
  • Ecology
  • Anatomy
  • Botany
  • Physiology
  • Genetics
  • Microbiology
  • Zoology

Following are some of the multiple choice questions on the Biology with answers that will help the students in developing their knowledge.

Biology MCQ

1. Which of the following is an Autoimmune disease?

  • Systematic lupus erythematosus
  • Acute anaphylaxis
  • Farmer's lung
  • A heart attack

2. Which of the following statements about the movement of nutrients through an ecosystem is true?

  • Energy flows and nutrient cycle
  • Energy flows and nutrients flow
  • Energy cycles and nutrients cycle
  • Energy cycles and nutrients flow

3. When during the Cell Cycle are Chromosomes visible?

  • only during interphase
  • only during cell division
  • only during G1 phase
  • only during they are replicated

4. Cultural transmission refers to the process of ______    

  • cultural patterns moving from one society to another
  • using the oral tradition
  • passing cultural patterns from one generation to another
  • using writing to enshrine cultural patterns

5. Most of the oxygen transported by the blood is

  • bound to hemoglobin
  • dissolved in plasma
  • dissolved in water
  • in ionic form as solute in plasma

6. The two purines in DNA are

  • Adenine & Thymine
  • Thymine & Uracil
  • Guanine & Uracil
  • Adenine & Guanine

7. In what organelle does cellular respiration take place?

  • Cytoplasm
  • Ribosomes
  • Mitochondria
  • None of the above

8. What sugar is found in RNA?

  • Deoxyribose
  • Ribose
  • Pentose
  • Sucrose

9. Which of the following enzymes is responsible for RNA synthesis?

  • RNA polymerase
  • RNase
  • RNA ligase
  • DNA polymerase

10. Smallest cell in human body is

  • Ovum
  • Nerve cell
  • Sperm
  • None of the above

11. A Sarcomere is the distance between two

  • Z discs
  • H zones
  • A bands
  • I bands

12. Where does translation take place in the cell?

  • Nucleus
  • Mitochondria
  • Ribosomes
  • Cytoplasm

13. What color is Lobster blood?

  • Blue
  • White
  • Red
  • Colourless

14. Which of the following is a healthy fat?

  • polyunsaturated fat
  • enriched fat
  • trans fat
  • saturated fat

15. What are the building blocks of Nucleic Acids?

  • Pentose Sugar
  • DNA
  • RNA
  • Nucleotides

16. Which of the following is a nucleotide found in DNA?

  • Deoxyribose + Phosphate Group + Polymerase
  • Adenine + Phosphate Group + Thymine
  • Deoxyribose + Phosphate Group + Thymine
  • Cytosine + Phosphate Group + Uracil

17. Phycology is the branch of botany in which we study about

  • Algae
  • Fungi
  • Ecology
  • Virus

18. Which of the following is not correct concerning nerves?

  • Axons make up a majority of the matter in a nerve.
  • Nerves are collection of axons of either sensory or motor neurons but not both.
  • Nerves are covered by an outer sheath called the epineurium
  • Nerves consist of parallel bundles of myelinated and nonmyelinated axons.

19. Because of base pairing in DNA, the percentage of

  • thymine molecules in DNA is about equal to the percentage of adenine molecules
  • cytosine molecules in DNA is much greater than the percentage of guanine molecules
  • adenine molecules in DNA is about equal to the percentage of guanine molecules
  • adenine molecules in DNA is much greater than the percentage of thymine molecules

20. RNA is a polymeric molecule. What does RNA stand for?

  • Rado Nuclear Acid
  • Ribo Nucleic Acid
  • Rhino Nuclear Acid
  • Resto Nucleus Acid

21. Hybrid zones provide an opportunity to investigate

  • Reproductive isolation
  • Speciation
  • Both 1 & 2
  • None

22. Dysfunctional behaviors are maladaptive which means that they

  • are medicated
  • interfere with everyday life
  • cause of stress
  • all of the above

23. What tissue has lacunae, calcium salts, and blood vessels?

  • Fibrocartilaginous tissue
  • Areolar tissue
  • Cartilage tissue
  • Osseous tissue

24. Unlike eutherians, both monotremes and marsupials

  • have some embryonic development outside the uterus
  • are found in Australia
  • lay eggs
  • lack nipples

25. Which organelle performs cellular respiration?

  • mitochondria
  • cytolasm
  • chloroplasts
  • All of the above

26. Steroid hormones exert their action by

  • entering the cell and activating mitichondrial DNA
  • binding cell receptors
  • activating hypothalmic release of regulating hormones
  • entering the nucleus of a cell and initiating or altering the expression of a gene

27. Sponges belongs to the phylum

  • Protozoa
  • Annelida
  • Porifera
  • Cnidaria

28. How many pairs of ribs are there in human body?

  • 10
  • 11
  • 12
  • 13

29. Blood flow to a tissue will increase if the

  • pH rises
  • Level of carbon dioxide at the tissue increases
  • Vessels constrict
  • Level of oxygen at the tissue increases

30. Which part of flower produces pollen grains that are generally yellowish in color?

  • Sepals
  • Petals
  • Stamens
  • Carpels

31. In which form is glucose stored in our body?

  • Insulin
  • Glucose
  • Glycogen
  • Fat

32. Pollen grains are found in

  • Stigma
  • Ovules
  • Anthers
  • Locule

33. Which of these phosphorylates ADP to make ATP?

  • E
  • B
  • C
  • A

34. The process of forming urine begins in the  

  • embryo
  • ureter
  • nephrons
  • urethra

35. Who discovered the monomers of nucleic acids?

  • James Watson, Francis Crick, and Rosalind Franklin
  • Friedrich Miescher
  • Phoebus Levene
  • Gerardus Johannes Mulder and Jöns Jacob Berxelius

36. Which best describes somatic mutations?

  • transmitted to progeny
  • not transmitted to progeny
  • Can't be identified
  • None of the above

37. Which of the following is a characteristic of all angiosperms?

  • double internal fertilization
  • ovules that are not contained within ovaries
  • complete reliance on wind as the pollinating agent
  • free-living gametophytes

38. The oval window is connected directly to which passageway?

  • scala tympani
  • external auditory meatus
  • scala vestibuli
  • pharyngotympanic tube

39. What is the outcome when a cell undergoes meiosis?

  • Two haploid cells
  • Four haploid cells
  • Two diploid cells
  • Four diploid cells

40. Organisms need Nutrients in order to

  • Breaking down food
  • Utilize chemical compounds
  • recycling
  • None

41. Select the correct statement about the uterine cycle.

  • During the secretory phase, estrogen levels are at their highest.
  • During the proliferative phase, levels of progesterone rise as the follicle begins to produce more hormone.
  • If fertilization occurs, the corpus luteum is maintained by a hormone secreted by the developing embryo.
  • The menstrual phase of the cycle is from day 1 to day 8.

42. Which best matches the description with the genetic material?

  • Chromosomes are located in the cytoplasm.
  • DNA is located in the nucleus.
  • Nucleotides form a helical structure that is called a gene.
  • Chromosomes create genes.

43. Mesenchymal cells are most commonly found in ________ connective tissue.

  • Epithelial
  • Embryonic
  • parenchymal
  • None of these

44. Genes are made of 

  • Carbohydrates
  • Proteins
  • Fats
  • Nucleotides

45. Sponges are most accurately described as

  • marine predators
  • chemoautrophs
  • filter feeders
  • freshwater scavengers

46. How many pints of blood in the human body?

  • 6 - 8
  • 10 - 12
  • 8 - 10
  • 5 - 7

47. What organelle carries out photosynthesis?

  • Chloroplasts
  • Ribosomes
  • Chromosomes
  • All of the above

48. What are the rungs of the DNA ladder made of?

  • phosphates and sugars
  • nitrates and sugars
  • nitrates and phosphates
  • sugars and hydrates

49. What is the structural unit of compact bone?

  • Osteon
  • Spongy bone
  • Lamellae
  • Periosteum

50. The largest gland of the human body is

  • Pancreas
  • Thyroid
  • Large Intestine
  • Liver

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