All Questions

Biological science

Follow
Showing 51 - 60 out of 71 Questions
49 Views

What do you mean by Pennate fasciculli ?

Pratyay Islam 4th Apr, 2020

Hello,

Pennate Fasciculli : The pennate fibre muscles resemble the feather, the fleshy fibres correspond to the bars of feather and the tendon to the shaft, as they are all inserted by tendon. Fascicles are attached in an oblique manner to the tendons.

They maybe

  • UniPennate : Flexor pollicis longus,
323 Views

What are the contents of Inguinal Canal ?

Aakansha david 4th Apr, 2020

Hello Roflguy,

The inguinal region of the body, also known as the groin, is located on the lower portion of the anterior abdominal wall, with the thigh inferiorly, the pubic tubercle medially, and the anterior superior iliac spine (ASIS) superolaterally.

The contents of the inguinal canal -

In males-

IIt

299 Views

Classification of Mutagens with examples ?

Pratyay Islam 1st Apr, 2020

Mutagens can be classified into two broad categories :

Physical Mutagens : Radiations are the most important physical mutagens. These are of two types.

  • Ionizing Radiations :  These include X-rays, gamma-rays, alpha-rays and beta-rays. These cause breaks in chromosomes and cells show abnormal cell division.
  • Non-Ionizing Radiations : These include
909 Views

What are the different Taxonomical Aids ?

Pratyay Islam 1st Apr, 2020

Procedures, methods and information that are useful in identification and classification of organisms are called taxonomical aids .

Taxonomical Aids are of the following types. :

  • Herbarium : It is a collection of dried, pressed and preserved plants. This is usually done on sheets for reference.Standard size is 41cm*29cm.The largest
217 Views

What are some examples of commensalism ?

Pompi Bhadra 26th Mar, 2020
Hello Aspirant!

You may know that Commensalism (+0) is a type of ecological Host-Parasite interaction (between two organisms) where the parasite species derives nutrition, shelter, protection, locomotion etc. from the host species. And here, the parasite species is benefitted while the host species is neither benefitted nor harmed.

Some common
383 Views

What are the different fossil dating methods ?

Leon George 24th Mar, 2020

Hello Aspirant,

Basically there are two dating methods

  • Absolute Dating- used to determine a precise age of a rock or fossil through radiometric dating  methods. This uses radioactive minerals that occur in rocks and fossils almost like a geological clock. It’s often much easier to date volcanic rocks than the
297 Views

name of theories of origin of life along with the scientists who proposed them ?

Pratyay Islam 23rd Mar, 2020

Hello Student,

Here are the names of all the theories and the scientists

Theories for Origin of Life

1. Big Bang Theory - Abbe Lemaitre

2. Nebular Theory - Kant and Laplace


Classical Theories

1. Theory of Special Creation - Father Suarez

2. Theory of Spontaneous creation/Abiogenesis -Aristotle and Pluto

501 Views

What are the different types of Gastric glands and what are their positions in stomach ?

Pratyay Islam 22nd Mar, 2020

Hello Student,

Gastric gland are of many types each having their own role and found in different positions within the stomach.

The different glands and their distribution is as follows :


1) Cardiac Part : Mucous Neck Cells are present here which secrete mucous.

2)Fundic/Gastric part : Four Types of

290 Views

What are the different types of water soluble vitamins ?

chinmayi 22nd Mar, 2020

Hello,

Water soluble vitamins are opposite to fat soluble vitamins as they are not stored in the body . It absorbs what it needs and then release them through urine . As they cannot be stored they are needed by the body continuously . Some of the water soluble vitamins

383 Views

What are stepwise procedure for analysis of chemical composition of biomolecules ?

Pratyay Islam 18th Mar, 2020

Hello Student ,

The composition of living tissue/biomolecules can be studied by chemical analysis. The stepwise procedure is as follows

  1. Living tissue is taken and grinded in trichloroacetic acid.
  2. Then the mixture is strained with a cheese cloth
  3. Filtrate and Retentate are obtained after straining.
  4. Filtrate contains the acid solube
The question have been saved in answer later, you can access it from your profile anytime. Access now