Gas transportation systems in animals, Biology

Assignment Help:

Q. Oxygen comes from the environment and carbon dioxide in the end returns to the environment. How do small animals solve the problem of taking away and bringing these molecules from/to their cells? Why isn't that solution possible for larger animals?

Small animals whose tissues make direct contact or are extremely close to the environment, like poriferans and cnidarians, making gas exchange by diffusion.

Larger animals with cells without direct contact with the environment or far from it need special gas transportation systems in these animals the respiratory and the circulatory systems play this role.


Related Discussions:- Gas transportation systems in animals

Types of osmotic exchanges, Types of Osmotic Exchanges The osmotic exc...

Types of Osmotic Exchanges The osmotic exchanges that take place between an animal and its environment are of two different types: Obligatory exchanges and Regulated

The salt concentration is higher than that of acid, Which of the following ...

Which of the following statements about buffers is true? Select one: a. A buffer composed of a weak acid of pKa = 5 is stronger at pH 4 than at pH 6. b. At pH values lower

Applications of computers in medical and nursing, Applications of Computers...

Applications of Computers in Medical and Nursing Establishment As computers are heavily used for storing and retrieving data the application can be administrative, clinica

What is osmotic pressure, Q What is osmotic pressure? Osmotic pressure ...

Q What is osmotic pressure? Osmotic pressure is the pressure produced in an aqueous solution by a region of lower solute concentration upon a region of higher solute concentrat

Cancer, Cancer ;  Cell  division , like  all other  biological  processes,...

Cancer ;  Cell  division , like  all other  biological  processes,  is under  genetic control. Certain  genes must regulate the processes  of cell growth  and division  in respons

Define a ''rag doll'' seed tester, A 'rag doll' seed tester Fold a squa...

A 'rag doll' seed tester Fold a square metre of muslin twice in the similar direction. Near one end mark out eight or ten squares about 5 cm by 5cm with a pencil. Number the sq

Explain zalcitabine and adverse effects, Explain Zalcitabine and adverse ef...

Explain Zalcitabine and adverse effects Zalcitabine - Zalcitabine appears to be less effective, less convenient and more toxic than the other NRTIs; it is used rarely. Ad

To study if bacteria grow better where it is dark or light, To study if bac...

To study if bacteria grow better where it is dark or light Inoculate two sterile dishes as before. Label one 'dark' and the other 'light'. Place the 1st dish in a darkwarm plac

Protection against insect bites, Protection Against Insect Bites To mi...

Protection Against Insect Bites To minimize insect bites, travellers should wear light-colored, long-sleeved shirts, pants and socks. The most effective topical insect repelle

Why food which can be taken in plenty, Food Which can be Taken in Plenty an...

Food Which can be Taken in Plenty and Food to be Avoided Lastly, in the context of changing the diet, we should know the foods to be avoided and the food to be taken in plenty

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