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Preparation for Medical Entrance exams - Biology, Physics and Chemistry

(580 Posts)

This thread is dedicated to preparation for Biology, Physics and Chemistry section of Medical Entrance exams like AIPMT, AIIMS and AFMC. You may share questions related to topics like Physiology of Animal, Ecology and Environment, Biotechnology, Cell: Structure, Genetics and Evolution, Inorganic Chemistry, Physical Chemistry, Organic Chemistry, Ray Optics, Electrodynamics, Electrostatics, Thermodynamics, Heat, Sound, Waves etc.

Question should not exceed 100 characters.Use add options for multiple choice questions and "Uploadimage/Add related data" for passage text papers.
Question should be at least 10 characters long.
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Harleen Bhalla
Shared from 11th Objective Biology - Tissues on 12 Sep, 2019 5:36 PM

Which of the following combinations of epithelium and example of the epithelium is not correct?

 
Simple squamous epithelium :Terminal bronchioles
Simple columnar epithelium : Goblet cells
Cuboidal epithelium : DCT of nephrons
None of these
Please type your answer before submitting.
Harleen Bhalla
Posted on 12 Sep, 2019 5:36 PM

In question NOT correct is being asked and the answer is justified as each of the terminal bronchioles divides to form respiratory bronchioles which contain a small number of alveoli. Terminal bronchioles are lined with simple cuboidal epithelium containing club cells. Terminal bronchioles contain a limited number of ciliated cells and no goblet cells.

B.sri Varshini
Shared from Sexual Reproduction in Flowering... on 26 Aug, 2019 11:14 AM

Self-incompatibility is a device to prevent in-breeding. Which of the following situations takes place during self-incompatibility?

 
Unisexual flowers are produced
Pollen tube growth is inhibited
Dys synchronisation of pollen release and stigma receptivity occurs
Anther and stigma are placed at different positions
#
Please type your answer before submitting.
B.sri Varshini
Posted on 26 Aug, 2019 11:14 AM

why not the fourth choice is correct? as both stigma and anther are placed at different positions, the pollen grains of the plant will not reach the stigma.it also prevents self fertilisation.

Ney Iared Reynaldo Junior
Shared from Thermodynamics on 05 Jun, 2019 2:04 AM

An exothermic reaction is that in which the reacting substances

 
have more energy than the product
have less energy than the product
have as much energy as the product
are at higher temperature than the product
Please type your answer before submitting.
Ney Iared Reynaldo Junior
Posted on 05 Jun, 2019 2:04 AM

Ok

Luv Gupta
Shared from JIPMER (2012) on 29 May, 2019 10:14 PM

The most active phagocytic white blood cells are

 
neutrophils and eosinophils
lymphocytes and macrophages
eosinophils and lymphocytes
neutrophils and monocytes
Please type your answer before submitting.
Luv Gupta
Posted on 29 May, 2019 10:14 PM

But lymphocytes and macrophages are also phagocytic

Ayush Verma
Shared from JIPMER Mock - 1 on 29 May, 2019 8:30 PM

Two similar charges having mass m and 2m are placed in an electric field. The ratio of their kinetic energies is

 
4 : 1
1 : 1
2 : 1
1 : 2
Please type your answer before submitting.
Ayush Verma
Posted on 29 May, 2019 8:30 PM

There is no mention of the instant to be = t Should it not be calculated using that drop in PE = gain in KE .'. q x V = KE