WBJEE, AIPMT, -Biology test

Which of the following occurs more than one and less than five in chromosome:
telomere
centromere
chromomere
chromatid
If you are provided with root-tips of onion in your class and are asked to count the chromosomes which of the following stages can you must conveniently look into:
metaphase
prophase
anaphase
telophase
The salivary gland chromosomes in the dipterans larvae, are useful in gene mapping because:
these are much longer in size
these are easy to stain
these are fused
they have endoreduplicated chromosome
In human being secondary constriction II found on:
1, 2, 13, 16 and Y-chromosome
13, 14, 15, 21, 22 chromosome
Y- chromosome
X-chromosome
The total hereditary material which occurs outside the chromosomes is called:
intron
muton
plasmon
cistron
Which chromosome remains condense during interphase:
None of the above
Autosome
X – chromosome of bar body
Normal X-Chromosome
Pollutants and carcinogens are detoxified by/ in?
Both A and C
P450 and P448
RER in liver
SER in liver
Autodissolution and osteogenesis are function of:
Mitochondria
Lysosome
Ribosome
Golgibody
Balbiani rings are sites of:
synthesis of lipid
synthesis of polysaccharides
RNA and protein synthesis
DNA replication
The r-RNA of 80S ribosome’s of larger sub-unit are:
16S
28S +5.8S +5S
23S +5S
18S
Which of the following organelle stores proteins?
Elaioplast
Plastids
Aleuroplast
Amyloplast
Chlorophyll in chloroplasts is located in:
Both grana and stroma
stroma
pyrenoid
grana
Which of the following is peroxide destroying enzyme present in Peroxisome?
Peroxidase
Amino acid oxidase
Catalase
Urate oxidase
Vesicles having fat droplets are called as:
polysome
endosome
liposome
mesosome
Which of the following known as “Border –bodies”?
Spherosome
Lomasome
Peroxisome
Glyoxisome
Mitochondria and chloroplast are semiautonomous as they possess:
Protein
DNA + RNA + Ribosome
DNA + RNA
DNA
All are the essential stages that take place in meiosis except:
number of chromosomes in daughter cells after meiosis II is reduced to half but the amount of DNA remains the same
segregation of homologous chromosome
formation of chiasmata and crossing over
two successive divisions without any DNA replication occurring between them
In meiosis the daughter cells differ from parent cell as well as amongst themselves due to:
segregation and independent assortment
independent assortment, segregation, and crossing over
independent assortment and crossing over
segregation and crossing over
If egg of an organisms has 10 Pg of DNA in its nucleus. How much DNA would a diploid cell of same organism have G2 phase of meiosis?
40 Pg
20 Pg
5 Pg
10 Pg
Rapid, abnormal and uncontrolled cell division(mitosis)results in:
Synopsis
New organism
Cancer
Gametogenesis
According to fluid mosaic model plasma membrane composed of:
Phospholipids and hemicellulose
phospholipids, extrinsic protein ,intrinsic protein
phospholipids and integrated protein
cellulose, hemicellulose
Which one of the following is an exception to cell theory?
Bacteriophage
Blue green algae
Prokaryotes
Bacteria
The cells are held together by a Ca-pectate layer called:
Tertiary cell wall
Middle lamella
Secondary cell wall
Primary cell wall
Which one of the following does not have ability to divide?
Bone marrow cells
Muscle cells
Liver cells
Nerve cells
Who proposed that the cells are totipotent?
White
Steward
Maheshwari
Haberlandt
The genetic material of the bacterial cell is localized within a discrete region , called as:
nucleoid
plasmid
nucleolus
nucleus
The pentacyclic sterol like molecules which stabilize the bacterial cell membrane are called as:
glycophorins
specterin
hopanoids
cholesterol
Ribosome’s are attached to the to the endoplasmic reticulum through:
hydrophobic interaction
t-RNA
r-RNA
ribophorin
SER is mainly found in cells actively engaged in:
catabolic activity
lipid metabolism
protein metabolism
secretion activity
Synthesis of ATP in mitochondria takes place:
at the outer membrane
at the cristae
in the intracristal space
in the matrix
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Discussion

Aaisha

i want to important question which help me in uptusee.

1252 days 16 hours 57 minutes ago

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i want to learn all the important questions which helps me a lot in AIEEE entrance exam and in UPTU also

1254 days 3 hours 37 minutes ago

DIPANKAR DAS
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