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Chromosome based question

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  • Vikas Kumar

    Dec 2nd, 2019

The shorter and longer arms of a submetacentric chromosome are referred to as :- (1) s-arm and l-arm respectively (2) p-arm and q-arm respectively (3) q-arm and p-arm respectively (4) m-arm and n-arm respectively

Model Answer:

2. p and q are shorter and longer arms of a sub-metacentric chromosome. Submetacentric chromosomes have the centromere slightly offset from the center leading to a slight asymmetry in the length of the two sections. Human chromosomes 4 through 12 are submetacentric in nature.

Non chordata related problem

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  • Vikas Kumar

    Nov 27th, 2019

Consider following features: (a) Organ system level of organisation (b) Bilateral symmetry (c) True coelomates with segmentation of body Select the correct option of animal groups which possess all the above characteristics. (1) Annelida, Arthropoda and Chordata (2) Annelida, Arthropoda and Mollusca (3) Arthropoda , Mollusca and Chordata (4) Annelida, Mollusca and Chordata

Model Answer:

1. True segmentation is seen in the Phylum Annelida and Chordata. Arthropods too show segmentation restricted to upper side of their body. In chordates, segmentation is pertaining to muscular part as it shows Circular & longitudinal muscle perpetuates throughout the body.

General

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  • Vikas Kumar

    Nov 23rd, 2019

At night, if a torch is pointed at a cat’s eyes they reflect light back to the source. Why does this phenomenon occur? a. To scare away predators b. To attract mates c. To increase sensitivity to low light d. It is just a side-effect of photoreceptor function

Model Answer:

C

Cell biology problem

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  • Vikas Kumar

    Nov 22nd, 2019

Which of the following statements is not correct? (1) Lysosomes have numerous hydrolytic enzymes. (2) The hydrolytic enzymes of lysosomes are active under acidic pH. (3) Lysosomes are membrane bound structures. (4) Lysosomes are formed by the process of packaging in the endoplasmic reticulum.

Model Answer:

4. Lysosomes are formed by the process of packaging in the ER

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CGAC - Career Guidance & Assessment by CAD

CGAC is 5-stage orientation-cum- motivation-cum- career guidance programme of CAD for students of class VIII-XII of any school. CGAC consist of presentations, quiz, question & answer sessions, tests of students etc. Guidance is given to students on the basis of assessment of their career interests and academic/non-academic skills.

STAGE 1

OCM: Orientation-cum- motivation Programme.

STAGE 2

CGA: Career Guidance & Analysis.

STAGE 3

Various Assessment tests conducted in school.

STAGE 4

Interaction with students based upon Career Interests.

STAGE 5

Interaction with school management, teachers and parents.

 

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Society for CREATING A DIFFERENCE-(CAD)

“Society for CREATING A DIFFERENCE-(CAD)” is an NGO created with the vision to promote science education & research with a focus on underprivileged students. The target segment is students of class VIII-XII.