Practice Questions

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#Question id: 2981

For the nuclear envelope to be broken down as cells go from prophase to prometaphase during mitosis, the nuclear lamina has to be disassembled. Which of the following statement is incorrect?

#SCPH06 I Botany

Phosphorylation of lamins A, B and C results in disassembly of the intermediate filament lattice into lamin dimers.
Due to their C-terminal myristoylation, lamin B dimers remain associated with the nuclear membrane.
Depolymerization of the nuclear lamin filaments leads to the disintegration of the nuclear lamina meshwork and contributes to disassembly of the nuclear envelope.
In telophase, removal of the phosphates by specific phosphatases promotes lamin reassembly, which is critical to re-formation of a nuclear envelope around the daughter chromosomes.

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#Question id: 1272

#SCPH06 I Botany

Collagen is exported from the endoplasmic reticulum as

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#Question id: 27167

#SCPH01 Biochemistry

The image given below is related to

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#Question id: 22950

#I Life Science/ Life Sciences Group – I-V

APETALA1 belongs to the transcription factor family:

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#Question id: 7751

#SCPH28 | Zoology

Ultrastructural studies have led to the characterization of two distinctive cytological

pathways of PCD in plants;

I) Vacuolar-type PCD

II) Hypersensitive response-type (HR-type) PCD

a) cytosol and all its organelles, including the plasma membrane, are completely brokendown

b) The vacuole loses water, resulting in marked cell shrinkage, contraction from the cell wall,

and nuclear DNA degradation

c) PCD occurs in leaves in response to microbial attack

d) cell wall is either partially or completely digested as well, as in endosperm tissue

e) Continued water loss from the cytosol leads to the breakdown of the plasma membrane

and the release of residual cellular contents into the apoplast

Given characterization of PCD pathway match with its type PCD?

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#Question id: 13075

#SCPH06 I Botany

Radioisotopes must be used in RFLP and RAPD markers