WBJEE, AIPMT, -Biology test

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

Aaisha

i want to important question which help me in uptusee.

1289 days 23 hours 4 minutes ago

jyoti kumari

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

1291 days 9 hours 44 minutes ago

DIPANKAR DAS
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