A. Steroid
B. Fat
C. Triglyceride
D. Fatty acid
# Which is wrong about lichens?
A. They reproduce by fragmentation
B. Help inhabitants of rocks
C. Help in soil formation
D. They live in basic areas
# What is wrong about mitochondria?
A. It is called powerhouse of cell
B. It has enzymes for Kreb's cycle
C. Looks green due to presence of chloroplast
D. None
# The amino acid 'glycine' is found:
A. Inside cell wall
B. Outside cell wall
C. Inside phospholipid layer
D. Outside phospholipid layer
# Poor man's meat is:
A. Fish
B. Egg
C. Soyabean
D. Both A and B
# Which is wrong?
A. Food is manufactured in presence of light
B. Photon is absorbed by chlorophyll molecule
C. Light is necessarily absorbed by plant for biological change
D. Flow of protons in electron transport chain is passive
# What is wrong about fertility factor F+ present in bacteria?
A. It is present in male strain
B. It is situated in plasmid
C. It can be transferred to female strain making it male strain
D. Having fertility factor, male strain has pilis
# Which is wrong?
A. mRNA can directly be replicating by DNA fragments
B. Okazaki fragments can be replicated by DNA
C. Directly polypeptide can be replicated by DNA fragments
D. Replication always proceeds in 5'-3' direction
# During meiosis, which is correct?
A. Four diploid nuclei are formed
B. Homologous chromosomes separate out
C. It helps in division of somatic cells
D. It helps in regeneration of body parts
# What is sticky ends?
A. End of DNA fragments with complementary base pairs, sliced by specific restriction enzyme
B. Free ends of DNA molecules
C. Places having Okazaki fragments
D. Places where helicases act
# What is wrong about golgi bodies?
A. Takes part in lipid, steroid synthesis
B. Helps in cell plate formation
C. Helps in lysosomes formation
D. Found in all living organisms
# All proteins are:
A. Amino acids
B. Two or more polypeptides
C. Have quaternary structure
D. Enzymes
# Chloroplast are green due to presence of:
A. Chlorophyll
B. Phycocyanin
C. Phycobilins
D. Chloropsin
# In photorespiration, CO2 loss takes place in:
A. Chloroplast
B. Mitochondria
C. Peroxisomes
D. Nucleus
# In c4 cycle, in the mesophyll cells, CO2 is picked up by:
A. PEP
B. RuBP
C. Rubisco
D. Malic acid
# In c4 plants, 'Calvin cycle' takes place in:
A. Mesophyll cells
B. Bundle sheath
C. Stomata
D. Epidermal cells
# A mass of cells is introduced into wings of embryo of tse-Tse fly. Then:
A. The cell mass undergoes programmed cell death
B. It undergoes division without differentiation
C. It differentiates into cells of wings
D. None
# Which is correct?
A. Differentiation is preceded by determination
B. Determination is preceded by differentiation
C. All cells undergo programmed cell death
D. All
# Eukaryotic cell differ from prokaryotic cells in having:
A. Presence of cistrons
B. Absence of cistrons
C. Absence of polymerase enzyme during m-RNA formation
D. None
# Which is true about lipids?
A. They are soluble in water
B. They are soluble in non-polar solvents
C. They are carbohydrates
D. They are primary source of energy
# Which is not true about alternation of generation?
A. There are two phases in the life cycle
B. Spores give rise to gametophyte
C. Spores behave as gametes
D. 1st diploid cell is zygote
# All living things of an ecosystem is called:
A. Flora and Fauna
B. Biome
C. Biota
D. Ecotype
# Endoplasmic reticulum is made up of:
A. Tubules and flat sac
B. Tubules only
C. Sacs and vesicles
D. Tubules, vesicles and flat sacs
# During which phase chromatids are clearly seen?
A. Anaphase II
B. Prophase I
C. Metaphase I
D. Metaphase II
# Phenotype refers to:
A. Genetic constitution
B. External appearance of an individual
C. Gene defect
D. Personal disabilities
# Which is wrong?
A. Cell wall completely isolates the adjacent cells
B. Ribosomes helps in protein synthesis
C. ER containing ribosomes is called rough ER
D. Cell membrane lies below cell wall
# Which is wrong?
A. Down's syndrome is due to trisomy
B. Aneuploidy is not seen in human
C. Genetic constitution of XXX are super females
D. Gametes are always haploid
# Homologous chromosomes separate during:
A. Anaphase I
B. Anaphase II
C. Prophase II
D. Telophase II
# Which of the following is correct?
A. Lysine and Leucine are essential amino acids
B. Cystine and Leucine differ in presence of basic group
C. Lysine is neutral amino acid
D. Leucine is basic amino acid
# Lipids are:
A. Hydrophilic
B. Hydrophobic
C. Both
D. None
# Which is not true about phenylketonuria?
A. Only one enzyme is deficient
B. This disease is due to abnormal recessive gene
C. Brain is also damaged
D. Urine turns black on standing
# All nucleic acids are made up of:
A. Nucleotides
B. Nucleosides
C. Nucleus
D. Purines
# Species is defined as:
A. Group of inter-related populations reproductively connected with similar groups
B. Group of inter-related population reproductively isolated with similar groups
C. Group of populations separated by physical barrier
D. Group of populations separated by reproductive barrier
# The earliest prokaryotes must have been:
A. Chemoheterotrophs
B. Chemoautotrophs
C. Saprophytes
D. Protists
# 3 stages of evolution was given by:
A. Theophrastus
B. Darwin
C. Modern biologist
D. Haeckel
# Bilateral symmetry means:
A. Equal division of organs on both sides of a line drawn from anterior to posterior end along midline
B. Symmetry on transverse direction
C. Both
D. Symmetry along any line from anterior to posterior end
# During meiosis gametes produced are:
A. Haploid
B. Diploid
C. Triploid
D. Polyploid
# No. of chromosomes in the root of an angiospermic plant is 16. Then number of chromosomes in its endosperm is:
A. 8
B. 24
C. 12
D. 48
# Which is incorrect about bacteria?
A. They lack cell wall
B. Few are chemoheterotrophs
C. They have cell wall
D. None
# Which is correct about C4 plants?
A. Only PS I is involved in photosynthesis
B. All the chloroplast are same in C4 plants
C. It can perform photosynthesis in low CO2 concentration
D. All
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