NEET Test Series-2021 to 2022 MCQ Quiz Hub

1. The Respiratory quotient (R.Q.) of C39 H72 O6 is
0.72
2.71
 1.32
3.25

2. In anaerobic respiration, the Respiratory quotient is
greater than one
one
 zero
infinity

3. What will the respiratory quotient of the mixture be when equal quantities of groundnut seeds and germinating maize is taken
infinity
greater than one
 less than one
one

4. The respiratory quotient of a plant structure is dependent on the substrate’s nature that is
metabolized
catabolized
 oxidized
reduced

5. The respiratory quotient in succulent plants is always less than one. The reason is
complete reduction
complete oxidation
 incomplete reduction
incomplete oxidation

6. The Respiratory quotient in germinating seeds is
 zero
less than one
greater than one
one

7. The energy yield due to the outcome of total oxidation of 1 molecule of glucose during the cellular respiration is enough to convert
38 molecules of ADP to 38 molecules of ATP
36 molecules of ADP to 36 molecules of ATP
30 molecules of ADP to 30 molecules of ATP
32 molecules of ADP to 32 molecules of ATP

8. Carbohydrate’s respiratory quotient is
equal to five
less than unit
greater than unity
 unity

9. Proton concentration is highest in which part of the chloroplast?
Stroma
 Intermembrane space
Lumen of thylakoids
 Antennae complex

10. Cyclic photophosphorylation is associated with the production of
ATP
NADPH
O2
All of the above

11. During cellular respiration, chemiosmosis occurs in
Chloroplast
Mitochondria
Peroxisome
Nucleoplasm

12. Which of the following is necessary for chemiosmosis?
 Proton gradient
Membrane
Proton pump
All of the above

13. Which of the following processes is responsible for generating a proton gradient across the thylakoid membrane?
Proton carrier transport H+ from stroma to lumen
Splitting of water on the inner side of the membrane
NADP reductase enzyme present at the stroma side, removes proton by reducing NADP+
All of the above

14. Proton concentration is highest in which part of the mitochondria?
Matrix
 Inner membrane
 Outer membrane
Intermembrane space

15. Which part of ATP synthase forms the transmembrane channel?
CF0
CF1
Both
None of the above

16. The ATP synthesised by ATP synthase present in the thylakoid membrane is released towards
stroma
lumen
inner membrane
outer membrane

17. ATP synthesis by ATP synthase is driven by the movement of
protons
 NADPH
electrons
All of the above

18. Who proposed the chemiosmotic hypothesis of ATP synthesis?
Francis Crick
H G Khorana
Peter Mitchell
J D Watson

19. What stops a new chromosome variant appearing as a unique mutation from increasing in frequency?
It is because polyploidy is a rare process
it will interbreed with majority form causing heterozygotes to be inferior
allopatric speciation does not necessitate reinforcement
all of these

20. This is the key to speciation of populations
reproductive health
 reproductive isolation
population growth
extinction

21.  This can cause a steeper cline
Extensive migration
Strong selection against heterozygotes
Stabilizing selection throughout the region
All of these

22. The reproductive isolating factor occurring when a sperm and an egg are incompatible is
 temporal isolation
 ecological isolation
gametic isolation
behavioural isolation

23. Species, the biological concept is applicable only to the breeding populations
that are adequately large to constitute a viable reproductive group
that are adequately uniform to be recognized by observation
in experimental conditions
in nature

24. Which of the following is included in the concept of genetic bottlenecks?
 a loss of genetic diversity in descendent populations
 sharing genetic material between two populations
extensive gene flow
increased ability to resist new diseases

25. This type of speciation enables production of hybrids between two species
allopatric speciation
parapatric speciation
bottleneck
sympatric

26. This is not a reproductive isolating mechanism
ecological isolation
 individual isolation
temporal isolation
behavioural isolation

27. In this kind of speciation, evolution can be expected to be faster whilst the speciation between the speciating events
Peripheral speciation
 Hybridization
Sympatric speciation
Both (b) and (c)

28. A new species emerges from this geographic range of its ancestor as per this theory of speciation
 Sympatric speciation
Parapatric speciation
Allopatric speciation
None of these

29. Lymphocytes are of two types, they are
T-cells and erythrocytes
Erythrocytes and Platelets
T-cells and Platelets
T-cells and B-cells

30. Which of these immune cells are able to quickly respond post any subsequent encounter with the same antigen?
 helper T cells
memory cells
plasma cells
basophil

31. Basophils, eosinophils and Neutrophils are referred to as
Platelets
Astocytomas
Granulocytes
Buffers

32. Cytotoxic T cells destroy the target cells
through injection of tumor necrosis factor
by phagocytosis
through insertion of perforins into the target’s membrane
 by releasing oxidizing agents

33.  This is not a cardinal sign of inflammation
redness
heat
swelling and pain
opsonization

34. _____ are released in the respiratory burst having the potent of cell-killing ability
histamines
neutrophils
free radicals
platelets-derived growth factors

35. The phenomena that initiates when a helper T cell binds with a class II MHC protein on a displaying cell is referred to as
T cell proliferation
costimulation
 self-antigen recognition
antigen proliferation

36. The lymphocytes which can develop immunocompetence in the thymus is
B lymphocytes
T lymphocytes
NK cells
None of these

37. An immune response when provoked by a nonself particle is known as
immunoglobulin
antibody
antigen
 interferon

38. The only blood cells which are not viewed as a part of the immune system are
fat cells
glial cells
osteocytes
red blood cells

39. This phenomena can be induced in those responsible for the horizontal elements of this phylogeny
 mitosis
point mutations
S phase of the cell cycle
endosymbiosis

40. If cladistics were used to build a phylogenetic tree of cats, this would be the most appropriate outgroup
tiger
leopard
 wolf
domestic cat

41. To construct a phylogenetic tree in order to apply parsimony, choose
 tree with fewest branch points
tree representing fewest evolutionary changes either in morphology or DNA sequences
tree in which branch points are based on as many shared characters possible
tree assuming all evolutionary changes with equal probability

42. This is used to know the phylogeny
mRNA
 rRNA
DNA
none of these

43. On the basis of cladistics, this eukaryotic kingdom is polyphyletic and hence unacceptable
Monera
Protista
Animalia
Fungi

44. Possessing four appendages when comparing mammals with birds is
a character used to sort bird species
example of analogy rather than homology
 a shared derived character
a shared ancestral character

45. Pick the incorrect statement concerning the terminologies of phylogenetics
branches are the lines in the tree
 tips of the branches have long lost sequences or species
node indicate inferred ancestor of extant taxa
connecting point joining two adjacent branches is a node

46. This is not a vestigial organ in man
coccyx
nails
 third molar
homologous

47. This is incorrect about the merits of molecular data for Phylogenetics study
sampling bias is involved
with the help of molecular data more robust and clear-cut phylogenetic tree can be constructed
much easier to obtain in comparison to fossil records
more in number compared to fossil records

48. This enzyme catalyzes the transfer of a phosphoryl group from ATP to glucose
Hexokinase
Phosphoglucose isomerase
Aldolase
Phosphoglucose mutase

49. Glycolysis is the conversion of
Fructose into phosphoenolpyruvate
Fructose into pyruvate
Glucose into phosphoenolpyruvate
Glucose into pyruvate

50. The EMP pathway in eukaryotes usually takes place in
 nucleus
 lysosome
Golgi apparatus
cytosol