Biology MCQ Quiz Hub

1. Which one of the following has a bilateral symmetry in its body organization?
Asterias
Sea anemone
Nereis
Euchinus

2. Which of the following statements is not true about metabolism?
Younger people generally have a slower metabolism than adults.
Basal metabolism is the amount of energy needed for sustaining life.
Basal metabolism is measured by the amount of calories burned when your body is inactive.
Metabolism is influenced by numerous factors, such as heredity and a?

3. Which describes how mRNA is used by a cell?
It is used to move information to other cells
It is used to check DNA for mutations.
It is used to replicate DNA for mitosis.
It is used to transfer genetic information.

4. Which of the following does not occur during Mitosis?
spindle formation
condensation of the chromosomes
breakdown of the nuclear membrane
replication of the DNA

5. Where does glycolysis take place in Eukaryotic cells?
Mitochondrial Outer membrane
Cytoplasm
Mitochondrial inner membrane
None of the above

6. Which event occurs during interphase?
Centrioles appear
Spindle fibers begin to form
The cell grows
Centromeres divide

7. The animals in which the body cavity is absent are known as __________.
Coelomates
Wild
Pseudocoelomates
Acoelomates

8. Appetite is triggered by
stomach enzymes
pancreatic enzymes
physiological drive
environmental cues such as the smell or taste of food

9. What sugar is found in DNA?
Ribose
Deoxyribose
Pentose
Sucrose

10. As an infant, the ability to produce antibodies is
about 80% of that of an adult
nonexistent
limited
the same as an adult

11. Which of the following is a feature of ghrelin?
It stimulates appetite and energy storage
It is released in high amounts from adipocytes during periods of excess energy intake
The blood level in the fasting state correlates directly with body weight
It is a metabolic antagonist of leptin

12. Which occurs during transcription?
Proteins are produced
Ribosomes produces
DNA information is copied to RNA
All of the above

13. Which of the following statements is most accurate regarding infection with parvovirus B19?
Parvovirus B19 causes severe anemia because it preferentially infects erythrocyte precursors
Parvovirus B19 can cause hydrops fetalis via transplacental infection of a fetus in a seropositive mother
Parvovirus B19 can be diagnosed by detection of viral RNA using PCR or hybridization assays
Parvovirus B19 replicates in the host cell nucleus utilizing a virally encoded DNA polymerase to create a double- stranded DNA intermediate

14. Which one of the following is true of tRNAs?
tRNAs are double-stranded.
There are four types of tRNA.
Each tRNA binds a particular amino acid.
All of the above

15. What molecule carries genetic information?
RNA
DNA
Proteins
Nucleotides

16. The hormone that stimulates heart beat is
Thyroxine
Gastrin
Glycogen
Dopamine

17. The main result of aerobic respiration is the
production of lactic acid as an end product
production of ATP from the breakdown of glucose
conversion of radiant energy into chemical energy
storage of energy in a polysaccharide

18. Which statement correctly describes the role of chance in evolution?
An allele that increases evolutionary fitness cannot be lost from a population by chance events.
The ultimate source of new alleles is mutation, random changes in the nucleotide sequences of an organism's DNA
Evolutionary change proceeds by an accumulation of changes that occur by chance.
None of the above

19. How many Nucleotides make up a Codon?
3
4
5
6

20. Tubes that bifurcate from the windpipe
Bronchi
pleura
Apex
Adenoids

21. 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

22. Nucleotides are attached by bonds between the
phosphates and sugars
nitrates and sugars
nitrates and phosphates
sugars and hydrates

23. Which of the following group produces naked seeds?
Angiosperms
Bryophyta
Thallophyte
Gymnosperms

24. Menstruation is triggered by a drop in the levels of
progesterone
relaxin
FSH
LH

25. Most absorption of nutrients occurs in the
Stomach
Liver
Large intestine
Small intestine

26. 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.

27. Which part of the brain is responsible for consciousness?
Brain stem
Cerebrum
Cerebellum
None of the above

28. Which phrase best describes rough ER?
studded with ribosomes
fewer solutes than the cell
stored in the central vacuole
protected by vesicles

29. In plants, chloroplasts are necessary for
photosynthesis
storage
cell movement
respiration

30. A viral species is a group of viruses that
same ecological niche
same genetic information
both A & B
None of the above

31. Which is not a basic function of a cell?
stopping homeostasis from happening
obtaining and storing energy
removing waste
transferring genetic information

32. What carries Blood away from the Heart?
Arteries
Veins
Both A & B
None

33. Oxygenated blood flows through which vessel?
Pulmonary Veins
Pulmonary Arteries
Both A & B
None of the above

34. Where does translation occur?
Nucleus
Ribosomes
Cytoplasm
mitochondrion

35. Receptors for hearing are located in the
Vestibule
Tympanic membrane
Semicircular canals
Cochlea

36. The HIV retrovirus is particularly deadly because
I can become AIDS shortly afte being contracted
It attacks the body immune system
Treatments can be dangerous for patients
Its hard to diagnose accurately

37. Where are chromatids found in a cell?
Anaphase
Metaphase
Prophase
None of the above

38. Bleeding of gums, falling of teeth, fragile bones and delayed wound healing occur due to the deficiency of which one of the following vitamins?
Vitamin C
Vitamin K
Vitamin D
Vitamin B

39. Fat is completely digested in the
small intestine
mouth
large intestine
stomach

40. Self pollination will lead to
Inbreeding
Over breeding
Outbreeding
Rare breeding

41. The organs protected by the thoracic cage include the
lungs
heart
both a & b
None of the above

42. Deficiency of fluoride leads to Which one of the following health problems?
Tooth caries
Mottling of tooth
Bending of bones
Stiffening of joints

43. What is the correct order for Respiration?
Election transport chain- Krebscycle- glycolysis
Glycolysis – Krebscycle electron transport chain
Glycolysis – electron transport chain – Krebs cycle
The Krebs cycle - electron transport chain - glycolysis

44. Which of the following is an example of polygenic inheritance?
Skin pigmentation in humans
Huntington?s disease in humans
White and purple flower color in peas
The ABO blood groups in humans

45. What sugar is found in RNA?
Deoxyribose
Ribose
Pentose
Sucrose

46. Which systems comprise the nervous system?
Central nervous system
Peripheral nervous system
Both A & B
None of the above

47. A plant that does NOT grow through vegetative propagation is ............
Rose
Papaya
Banana
Orange

48. The lining of the marrow cavity is
Endosteum
Sarcolemma
Episteum
Periosteum

49. Bacteria divide by
Binary Fission
Spirilla
RNA
Fusion

50. What is the function of reverse transcriptase?
synthesis of RNA from protein
synthesis of DNA from an RNA template
synthesis of protein from DNA
synthesis of DNA from protein