PPSC BIOLOGY GRAND TEST Part 3

41- Term pleiotropy is explained with when:?
Question grade : 1

41/100
single allele affects a single phenotypic trait
single allele affect multiple phenotypic traits
multiple alleles affects multiphenotypic allele
multiple alleles affects a single phenotypic trait

42- Where are the histamine secreting cells found?
Question grade : 1

42/100
nervous tissue
connective tissue
areolar tissue
none of them

43- During meiosis, when does the synapsis occur?
Question grade : 1

43/100
prophase 1
metaphase 1
anaphase 1
pachytene

44- Glottis open on the floor of?
Question grade : 1

44/100
pharyngeal cavity
diaphragm
trachea
None of the above

45- The activity of succinate dehydrogenase is inhibited by?
Question grade : 1

45/100
glycolate
malonate
pyruvate
phosphoglycerate

46- Which of the following is the gram-negative type of bacteria?
Question grade : 1

46/100
lactobacillus
Escherichia coli
Staphylococcus aureus
bacillus subtilis

47- Find a mismatch?
Question grade : 1

47/100
taq polymerase,polymerase
template-double stranded DNA
primer-oligonucleotide
synthesis 5 to 3 direction

48- Interferon is made by?
Question grade : 1

48/100
lymphocytes
lymphoblasts
Fibroblasts
all of these

49- Name the cell line of human embryonic lung?
Question grade : 1

49/100
TH1
WISH
MRC_5
L

50- NADPH2 is produced by?
Question grade : 1

50/100
Glycolysis
photosystem 1
photosystem 2
anaerobic respiration

51- Staphylococcus aureus is was isolated by?
Question grade : 1

51/100
Sir Alexander Ogston
PASSET
Louis pasture
Robert Koch

52- —- is an enzyme those covalent bonds between restriction fragments?
Question grade : 1

52/100
DNA primase
DNA helicase
DNA polymerase
DNA ligase

53- What is the unit of the genetic map.?
Question grade : 1

53/100
Centimeter
nanometer
Angstrom
centimorgan

54- Trisomy of ——————— leads to the pataue,s syndrome?
Question grade : 1

54/100
13th chromosome
18th chromosome
21st chromosome
22nd chromosome

55- Human immune deficiency virus HIV affects?
Question grade : 1

55/100
red blood cells
fibroblasts
helper t lymphocytes CD4
mast cells

56- ——– is the sensitive layer of the eye?
Question grade : 1

56/100
retina
iris
choroid
sclera

57- How many pairs of cranial nerves are associated with the fish brain?
Question grade : 1

57/100
12
13
10
9

58- Site for the active synthesis of ribosomal RNA is ———?
Question grade : 1

58/100
nucleoplasm
ribosomes
nucleolus
lysosomes

59- In GRAM staining iodine is used as a——————-?
Question grade : 1

59/100
fixative
mordent
solubilizer
stain

60- dentify the input sequence format in BLAST?
Question grade : 1

60/100
GENBANK
EMBL
FASTA
PIR

Oplus_0

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