Which of the following amino acids contain sulphur?
Methionine
Arginine
Histidine
Tryptophan
Plants which produce flowering below a critical day length of photoperiod are called
Long day plant
Short day plant
Day neutral plant
None of the above
Photorespiration occurs in cell organelle-
Mitochondria
Peroxisomes
Chloroplast
All of these
Photophosphorylation takes place in-
Chloroplast
Cytoplasm
Mitochondria
Ribosomes
Amyloplasts contains-
Starch
Lipid
Protein
Nucleic acid
The site of synthesis and degradation of H 2 O 2 in a plant cell is-
Lysosome
Sphaerosome
Peroxisome
Microsome
All are membrane-bounded cell organelles except-
Ribosomes
Vacuoles
Plastids
Glyoxysomes
The largest cell organelle is-
Plastid
Dictyosome
Mitochondria
Nucleus
The function of nucleolus is-
DNA Replication
RNA Replication
Chromatid Sepration
Ribosome Synthesis.
If cell is fragmented in a centrifuge, which new cell structure is formed-
Centrosome
Ribosome
Dictyosome
Microsome
The energy currency of the cell is-
NADPH
ADP
ATP
Creatin Phosphate
A unit membrane has a thickness of-
75 A°
1 µm
5 nm
100 nm
Within a cell the site of aerobic respiration is-
Vacuole
Mitochondrian
Plastid
Peroxysomes
Whole life on the earth is dependent on following process-
Protein synthesis
Photosynthesis
Respiration
DNA synthesis
Maize is a-
C3 plant
C4 plant
CAM plant
None of the above
Ferredoxin is involved in-
Transport of oxygen
Electron transfer
Hydrolysis
Non of the above
In plants, auxin (IAA) is synthesised from-
L-Tyrosine
L-Methionine
L-Lysine
L-Tryptophan
Chlorophyll 'a' contains-
Fe
Cl
Mg
None of the above
Oxygen evolved during photosynthesis comes from -
Water
CO ₂
Soil
Atmosphere
Which cell organelle plays a role in photorespiration-
Nucleus
Ribosomes
Peroxisomes
All of these
If a cell is placed in hypertonic solution, it will –
Shrink
Swell
Remain same
Burst
Cell organelle NOT present in higher plants is -
Peroxisome
Vacuole
Basal Body
Lysosomes
C4 cycle of photosynthesis is also known as -
Calvin-Benson cycle
Hatch and Slack cycle
Crassulacean acid metabolism
Glyoxylate cycle
Most effective light in photosynthesis is -
Blue
Green
Red
Yellow
Cell organelle known as the dictyosome is
Ribosome
Chondriosome
Golgi body
Peroxisome
It is also known as flowering hormone -
Auxin
GA
Cytokinin
ABA
Which of the following may act as a second messenger for auxin action-
IAA
Matellothiomines
DNA
Polyamines
Site for protein synthesis is -
Rough endoplasmic reticulum
Nucleus
Smooth endoplasmic reticulum
Chloroplast
Fatty acids oxidation takes place in-
Mitochondria
Cytoplasm
Lysosomes
Peroxisomes
Enantiomer of D-glucose is -
D-Fructose
L-Fructose
L-Glucose
D-Galactose
Following amino acids contains positively charged side chain-
Glutamic acid
Arginine
Tyrosine
None of these
R.N.A. primage is involved in-
Replication
Transcription
Translation
Ligation
Triterpene is made of following number of Isoperine units
Three
Six
Nine
None of these
Following is an essential fatty acid-
Linoleic acid
Linolenic acid
Both a & b
None of these
Smallest organelle of a cell is –
Nucleus
Ribosome
Mitochondria
Chloroplast
Which of the following have no enzymes of their owns –
Bacteria
Cyanobacteria
Viruses
All the above
Which of the following enzymes is not proteinaceous in nature?
Urease
Peptidage
Phosphatase
Ribozymes
The most abundant protein enzyme found in plants-
RuBP carboxylase/oxyganase
PEP carboxylase
Catalase
Peroxydase
Phosphodiester bond is present in-
Carbohydrates
Proteins
Lipids
Nucleic acids (DNA/RNA)
Which of the following linkages is present in amylopectin?
α , 1 → 4
α , 1-6
α , → 4 & α , 1 → 6
None of the above
Phospholipids contain -
Fatty acids
Alcohols
Phosphoric acid
All the above
Synthesis of proteins from mRNA is called-
Transcription
Translation
Both a & b
None of the above
Which of the following storage proteins is present in maize-
Hordein
Ricin
Zein
Gliadin
Cell theory was proposed by
Beadle and Tatum
Robert Hooke
Schleiden and Schwann
Leenuwenhoek
Who coined the term Cell-
Schwann
Schleiden
Robert hook
Both a & b
Cellulose is the major component of -
Primary wall
Middle lamella
Secondary wall
All of the above
Amino acids are joined by -
Peptide bond
Hydrogen bond
lonic bond
Glycosidic bond
The primary structure of protein represent -
Linear sequence of amino acids joined by peptide bond
3-D structure of protein
Helical structure of protein
None of the above
The term 'enzyme' was coined by -
Frederick W. Kuhne
James
Sumner
Emil Fisher