Explain physical barrier for external defence mechanism-skin, Science

Assignment Help:

Explain physical barrier for External Defence Mechanism - Skin

It provides nice protective covering to the body.  The outer layer- horny layer - contains dead keratinized cells. These cells have hard insoluble fibrous proteins called keratin, instead of soft protoplasm. This layer is water proof and germ proof. It can prevent entry of virus and bacteria.


Related Discussions:- Explain physical barrier for external defence mechanism-skin

Insight into robotics and robots, Insight into Robotics and Robots: The...

Insight into Robotics and Robots: The science of designing, building und using robots is called robotics. And what is a robot?  Many people  think of robots as mechanical pe

#titlrespiratione.., what are the four characteristics of respiratory surfa...

what are the four characteristics of respiratory surface

Explain the insulin, Explain the Insulin Insulin is a hormone synthesiz...

Explain the Insulin Insulin is a hormone synthesized from the precursor called preproinsulin. Preproinsulin has four peptides. Insulin circulates in the blood in a free state.

Earth and moon, What is happening to the length of a day on the Earth, as a...

What is happening to the length of a day on the Earth, as a result of the gravitational pull of the Moon?

Introduction to accidents and first aid, INTRODUCTION : In this unit, we s...

INTRODUCTION : In this unit, we shall discuss the need and the method for reporting an accident. We shall explain the choice of locating the first aid box and state its contents.

Calculate the velocity of groundwater, The characteristic properties of an ...

The characteristic properties of an aquifer can be used to calculate groundwater velocities, v groundwater (L/T), according to: V groundwater = K H / η (dh/dl) where KH (L/

Hazards in the laboratory, HAZARDS IN THE LABORATORY : Laboratories in...

HAZARDS IN THE LABORATORY : Laboratories in the biology department of schools, colleges and universities and other higher level organisation such as hospitals, veterinary esta

Draw a restriction map of the plasmid, A 12.8 Kb circular plasmid is digest...

A 12.8 Kb circular plasmid is digested with the following restriction enzymes, resulting in the pattern of bands indicated.       BamHI    12.8kb   HindIII      9.3kb + 3.5kb   B

Pollution due to radiations, Pollution due to Radiations: Hazards of ...

Pollution due to Radiations: Hazards of nuclear radiations are extremely serious, because they upset the genetic make up of  the living beings. Environmental  pollution from

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd