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Biology Life Science Test Medium Mode MCQs With Answers
Question # 1
Common name for pyrophyte is
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Euglenoids
Dinoflagellates
Diatoms
Kelps
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Question # 2
Irreversible inhibitors form which bonds active site.
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Hydrogen bonds
Covalent bonds
Ionic bonds
Hydrophobic bond
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Question # 3
Total photosynthesis is carried out by the terrestrial plants in about.
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15%
10%
20%
22%
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Question # 4
Active transport is selectively and is dependent on
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Nutrition
Respiration
Digestion
Circulation
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Question # 5
In human body percentage of nitrogen accounts for.
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1%
2%
3%
10%
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Question # 6
Which is found in herestitial fluid.
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Large proteins
White blood cells
Red blood cells
Platelets
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Question # 7
80% of total RNA is the cell comprises of.
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mRNA
tRNA
rRNA
RNA-DNA hybrid
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Question # 8
Tentacles is a characteristic of
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Snall
Amoeba
euglena
Hydra
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Question # 9
Syrinx is a
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Organ of voice in mammals
Organ of voice in birds
Copulatory organ in birds
Seuse organs in birds
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Question # 10
The process that most likely/directly enables a root cell to absorb minerals by active transport and enable a muscle cell to contract is
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Circulation
Excretion
Respiration
Assimilation
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Question # 11
The melting point of palmitic acid is
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-8
o
C
34
o
C
63.1
o
C
55.6
o
C
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Question # 12
The uterine layer which is shed with each monthly cycle is:
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Endometrium
Perimetrium
Tunica albuginea
Myometrium
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Question # 13
Most land mammals respond to cold by raising their.
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skin
Furs
Bristles
Spines
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Question # 14
The remodeling of bone is a function of which cells?
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Chondrocytes and asteocytes
Osteoblasts and osteoclasts
Chondroblasts and osteoclasts
Chondroblasts and osteocytes
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Question # 15
A gene with initiation codon, which encodes the amino acid methionine is.
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UAA
UAG
AUG
UGG
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Question # 16
All the 64 codons were tested by
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Marshall Nirenberg
Philip Leader
Har Gobind Khorana
All a,b,and,c
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Question # 17
The sites where nerve impulse is transmitted from the nerve endings to the skeleton muscle cell membranes are the:
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Neucromuscular junctions
Sarcomeres
Myofilaments
Z discs
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Question # 18
Cancer occurs due to error in
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Binary fission
Budding
Mitosis
Meiosis
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Question # 19
Dialyses means
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Removing the blood
Cleaning the blood
Diluting the blood
Storing the blood
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Question # 20
Alzheimer's disease is characterized by the decline in the function of.
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Brain
Kidney
Liver
Stomach
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Question # 21
During gastrulation the blastoderm splits into two layers, an upper layer of cells is called.
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Hypoblast
Area pellucida
Epiblast
Area Opaca
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Question # 22
the reabsorption of water in collecting tubules is under the control of.
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Aidostenrone
ADH
Pressure filtration
Tubular secretion
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