Chromosome based question

  • FB Share
  • 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

  • FB Share
  • 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

  • FB Share
  • 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

Chalina

  • FB Share
  • Vikas Kumar

    Nov 21st, 2019

Which poriferan is commonly known as "Dead man's finger" Or "Mermaid's gloves" A. Hyalonema B. Chalina C. Clion D. Oscarella

Model Answer:

B. Chalina It resembles the fingers of a hand which has many oscula. Chalina belongs to the class of Demospongia and order Monaxonida

Human Physiology

  • FB Share
  • Vikas Kumar

    Nov 19th, 2019

Which of the following factors is responsible for the formation of concentrated urine? (1) Low levels of antidiuretic hormone. (2) Maintaining hyperosmolarity towards inner medullary interstitium in the kidneys. (3) Secretion of erythropoietin by juxtaglomerular complex. (4) Hydrostatic pressure during glomerular filtration

Model Answer:

Maintaining hyperosmolarity towards inner medullary interstitium in the kidneys. Which involves Loop of Henele and vasa recta.

Ion gated channels

  • FB Share
  • Vikas Kumar

    Nov 19th, 2019

https://m.facebook.com/story.php?story_fbid=147429936615712&id=111678116857561

Mechanics Problem 4

  • FB Share
  • Abhishek Kumar

    Apr 11th, 2019

  • Saminur Rahaman May 19th, 2019

    (a) Linear momentum

    Sanidhya Mittal Aug 18th, 2019

    Linear momentum, kinetic energy

    Hemank Soni Dec 27th, 2020

    (A) Linear momentum

Mechanics Problem 3

  • FB Share
  • Abhishek Kumar

    Apr 11th, 2019

  • Surya Ruidas Aug 9th, 2019

    (a) linear momentum

    Sanidhya Mittal Aug 18th, 2019

    Mechanical energy

    Hemank Soni Dec 27th, 2020

    (D) mechanical energy

Do You Know? 1

  • FB Share
  • Abhishek Kumar

    Apr 11th, 2019

Mechanics Problem 2

  • FB Share
  • Abhishek Kumar

    Apr 1st, 2019

  • Priyangshu Pramanick Apr 2nd, 2019

    It seems to be like (a) always x y

    Saminur Rahaman May 19th, 2019

    (a) x y

    Hemank Soni Dec 27th, 2020

    (a)