NEET Biology Model Test-3Question No:1
What is the typical size of bacteria?
[A] 1-2 µm
[B] 2-3 µm
[C] 3-4 µm
[D] 0.1-1.0 µm
Nitrogenase requires how many molecules of ATP for each molecule of NH3 produced?
Adrenal cortex cab be histologically divide in to how many layers?
In which year, Ribosome was first observed by George Palade?
How many ATP are produced when 16H+ ion passed through F-unit of F0— F1 particle?
Ovary is one chambered but it become two chambered due to the formation of false septum in
Transfer of pollen grains from the anther to the stigma of same flower of the same plant is called
Which one of the following is used as vector for cloning genes into higher plants?
[B] Agrobacterium tumifaciens
[C] Rhizopus nigricans
The principal nitrogenous excretory compound in humans is synthesised
[A] in kidneys but eliminated mostly through liver
[B] in kidneys as well as eliminated by kidneys
[C] in liver and also eliminated by the same through bile
[D] in the liver, but eliminated mostly through kidneys
Algae have cell wall made up of
[A] cellulose, galactans and mannans
[B] hemicellulose, pectins and proteins
[C] pectins, cellulose and proteins
[D] cellulose, hemicellulose and pectins
Which one of the following would not lead to formation of clones?
[A] Double fertilization
[C] Vegetative reproduction
[D] Tissue culture
A polygenic trait is controlled by 3 genes: A, B and C. In a cross AaBbCc x AaBbCc, the phenotypic ratio of the off springs was observed as 1:6:x:20:x:6: What is the possible value of x?
Mendel’s principle of segregation means that the gametes always receive
[A] one pair of alleles
[B] one quarter of the genes
[C] one of the paired alleles
[D] any pair of alleles
The arthropod exoskeleton is composed of
[C] several kinds of proteins
[D] single complex protein called arthropodin
Thymosin hormone is secreted by
[A] thyroid gland
[B] parathyroid gland
[C] thymus gland
[D] hypothalamus gland
Subunits of SOS ribosome are
[C] Both (a) and (b)
[D] None of these
Which one of the following does not belong to kingdom-Monera?
[C] Slime mould
One of these is associated with terminator codon?
Bowman’s glands are found in
[A] olfactory epithelium
[B] external auditory canal
[C] cortical nephrons only
[D] juxta medullary nephrons
The RNA primer is used in
Which of following mineral-nutrients plays an important role in biological nitrogen fixation?
One advantage of cleistogamy is:
[A] It leads to greater genetic diversity
[B] Seed dispersal is more efficient and widespread
[C] Seed set is not dependent on pollinators
[D] Each visit of a pollinator results in transfer of hundreds of pollen grains
The final stable community in ecological succession is:
Erythropoiesis starts in:
[D] Red bone marrow
Which of the following is unique to mitosis and not a part of meiosis?
[A] Homologous chromosomes behave independently
[B] Chromatids are separated during anaphase
[C] Homologous chromosomes pair and form bivalents
[D] Homologous chromosomes crossover
The sequence of ear ossicles from outside to inside is:
[A] Malleus —>Incus —> Stapes
[B] Incus —> Stapes —> Malleus
[C] Stapes -> Incus —>Malleus
[D] Malleus -> Stapes —> Incus
Which is correct?
[A] Slime moulds are haploid
[B] Protozoan lack cell wall
[C] Dinoflagellates are immotile
[D] Pellicle is absent in Euglena
RAAS secrets which of the following hormone?
[A] Mineralo corticoids
[B] Gluco corticoids
[C] Both (a) and (b)
[D] None of these
Branch of biology dealing with study of organism in outer space is:
Example of holocrine gland is
[B] Mammary gland
[C] Salivary gland
[D] Sebaceous gland
How many metameric segments present in earthworm?
Penicillin was extensively used to treat American soldiers wounded in World War II. Fleming, Chain and Florey were awarded the Nobel Prize in which year?
How many genes are present in chromosomes X and chromosome Y, respectively?
How much filtrate is reabsorbed by renal tubules?
At which thoracic vertebra, trachea is divided into 10 bronchi-
Which of the following are free living nitrogen fixer in soil
The genotype of a plant showing the dominant phenotype can be determined by
[A] test cross
[B] dihybrid cross
[C] pedigree analysis
[D] back cross
Select incorrect matching
Carrier ions like Na+ facilitate the absorption of substance like
[A] amino acids and glucose
[B] glucose and fatty acids
[C] fatty acids and glycerol
[D] fructose and Some amino acids
Some hyperthermophilic organisms that grow in highly acidic (pH 2) habitats belong to the two groups called
[A] eubacteria and archaea
[B] cyanobacteria and diatoms
[C] protists and mosses
[D] liverworts and yeasts
The variation/difference in the off springs of a species from their parents constitutes an important component of
[C] species fixation
A transgenic rice (golden rice) has been developed for increased content of
[A] vitamin A
[B] vitamin Bf
[C] vitamin C
[D] vitamin D
Which of the following vitamins help in absorption of calcium ion from intestine
[A] Vitamin A
[B] Vitamin D
[C] Vitamin C
[D] Vitamin B
[A] Copy DNA
[B] Conjugated DNA
[C] Chimeric DNA
[D] Complex DNA
Which of the following groups is absolutely essential functional component of the ecosystem?
[B] Producers and herbivores
[C] Producers and detritivores