Biology Mcqs

Blood cells with smallest size r
Erythrocytes
Leucocytes
Thrombocytes
Granulocytes

Pericycle in plants lies
External to cortex
External to endodermis
Internal to endodermis
Central most

Most bacteria exist in forms
1
2
3
5

A co factor that is permanent part of enzyme
Activator
Co enzyme
Prosthetic group
All

Micromolecules found in livng organism are
Always organic
Store house
Building blocks
Polymers

Accrding to schldein n schwan a cell cnsists plasma membrane,cell wall n cytoplasm n nucleus all is true except in
Paramecium
Allium cepa
Planaria
Nostoc

Rate of diffusion is high in a tissue having
Loose arrangemnt
Compct arrngmnt
No intercellulr spaces
Compact having cuticle

Longest parr of foregut in cockroacg is
Buccal cavity
Oesophagus
Crop
Gizzard

Plasmodium of myxomycota is multinucleate structure with each nucleus
Haploid
Diploid
Triploid
Polyploid

These are extremely complex and includes biological rhythms
Kinesis
Taxes
Instincts
Learning

Down syndrome is ab example of
Monoploidy
Aneuploidy
Polyploidy
Diploidy

Is is a type of plant movemnt that is spontaneous and selfcontrolled?
Epinasty
Chemo tropism
Haptonasty
Nyctinasty

Active trsnsport is selective and is dependant upon
A photosynthesis
B respiration
C transportation
D permeability

The amount of CO2 carried by pulmonary artery is
A 50ml/100ml blood
B 54ml/100ml blood
C 4ml/100ml blood
D 20ml/100ml blood

Rubisco oxygenase is involved in fixation of
A o2 in calvin cycl
B o2 in photorespration

Spores and sporangia are most common characters of
A zygomycetes
B Ascomycetes
C Basidiomycetes
D duetromycetes

The amount of CO2 carried by pulmonary artery is
A 50ml/100ml blood
B 54ml/100ml blood
C 4ml/100ml blood
D 20ml/100ml blood

IS RESPONSIBLE FOR THE ACTIVATION OF CATALIC SITE?
LOW TEMP
EI COMPLEX
ES COMPLEX
SUBSTRATE

Prophage consists of
A DNA n protein
B only protein
C only DNA of host
D only DNA of phage

Phylogeny describes a species
A morphological similarities
B evolutionary history
C Developmental history
D geographical distribution

Component responsible for determination of viral shape
A kind of nucleic acid
B protein sub units
C kind of hosts
D viral envelop

FOR IONS AND CHARGED PARTICLES ,LIPID BILAYER IS
FREELY PERMEABLE
SEMI PERMEABLE
IMPERMEABLE
SELECTIVELY PERMEABLE

CENTRIOLES EXIST IN
CENTROSOME
CENTROMERE
NUCLEOSOME NUCLEOID

THE CHEMICAL SUBSTNC MOST ABUNDNT IN MIDDL LAMELLA:
SUBRIN
LIGNIN
CELLULOSE
PECTIN

THE CELL WALL FORMATION IN PLANTS ID DETERMINED BY:
GOLGI BODIES
ER
MICROTUBULES
NUCLEOLUS

CELL MEMBRANE OF EKARYOTES CONTAIN:
PHOSPHOLIPIDS
CHOLESTRL
PROTEINS
ALL

the anaerobic respirations occur in:
A CYTOPLASM
B MITOCHONDRIA
C CHLOROPLAST
D NUCLEUS

The nuclear material is directly submerges in cytoplams in
A bacteria
B green algae
C amoeba
D animal cell

Storage of calcium ions in muscls is function of:
A rough ER
B smooth ER
C golgi bodies
D cytoplasm

Wood contains
A proteins
B cellulose n proteins
C cellulose

The length of mRna depends upon:
A size of gene
B size of polypeptide
C size of tRna
D both a n b

Glycerol can b alternatively called as:
A.trihydroxyl alcohol
B.triacylglycerok
C.fatty acid
D.phospholipid

Long term regulation by harmones are brought in:
A.animals
B.plants
C.both a and b?

Biology deals wit the study of
A. Living thng only?
B.Organisms n related envirnmnt?