Study your flashcards anywhere!

Download the official Cram app for free >

  • Shuffle
    Toggle On
    Toggle Off
  • Alphabetize
    Toggle On
    Toggle Off
  • Front First
    Toggle On
    Toggle Off
  • Both Sides
    Toggle On
    Toggle Off
  • Read
    Toggle On
    Toggle Off

How to study your flashcards.

Right/Left arrow keys: Navigate between flashcards.right arrow keyleft arrow key

Up/Down arrow keys: Flip the card between the front and back.down keyup key

H key: Show hint (3rd side).h key

A key: Read text to speech.a key


Play button


Play button




Click to flip

16 Cards in this Set

  • Front
  • Back

What percent of cell is carbohydrate?


Give 3 roles of carbohydrates?

-energy source

-energy storage

-structural (membrane)

What does alpha glucose look like

Oh on bottom

How does beta glucose differ to alpha?

OH is above carbon 1

State the two types of glycosidic bonds you can get?

1,4 glycosidic bond

and 1, 6 between the branched off CH2OH and carbon 1

What type of bind does amylose have

1,4 glycosidic bond only

And forms a helix 'like structure'

Describe the bonding in the polysaccharide: Amylopectin

For every 1 (1,4) bond there are 4 (1,6) glycosidic bonds. Making the structure very compact with many bends

Why can't the cell store carbohydrates?

It will lower the water potential too much and water will move in by osmosis and cell with burst by lysis

Why do plants and animals use alpha glucose for respiration ?

Plants and animals only have the enzyme which can break down alpha glucose and beta glucose which is present in stuff like cellulose can't be digested

Features of starch

Storage molecule found only in plants in the chloroplasts and consists of Amylopectin and amylose

And is insoluble

Suger for storing energy in animals?

Glycogen-consists of amylose and Amylopectin. Same as starch in plants however has shorter 1,4 bonds and so more compact. And more branches

Bonding in cellulose

B pleated sheats in which the bonding is much linear and straight unbranched.

Many b glucose molecules make microfibrills even macro fibrills by sheets held together by h bonds

How is cellulose adapted for its role?

Beta pleated sheets form macro fibrils with hydrogen bonds making cellulose strong and rigid. Therefore it is ideal for plant cell as added molecules withing the cell wall make it waterproof and turgid.

State 3 feature of the structure of glycogen

Contains Amylopectin and amylose

With shorter 1,4 bonds

Many branches

Therefore making it compact

It is also insolube

No cross links!

The molecule formed by hydrolosis of cellulose

Beta glucose

Name the bond that joins 2 monosaccharides?

1,4 glycosidic bond

1,6 glycosidic bond