Biology Quiz 3.1-3.11

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Questions and Answers

A phospholipid is composed of....

One glycerol molecule linked to one phosphate group and two fatty acids (correct)
One fatty acid molecule linked to three glycerol molecules
One glycerol molecule linked to three phosphate groups
One fatty acid molecule linked to one glycerol molecule and two phosphate groups

The molecular formula of most monosaccharides follows the following pattern:

C(n) H(3n) O(n)
C(n) H(n) O(n)
C(n) H(2n) O(n) (correct)
C(n) H(n) O(2n)

What is the general function of enzymes within a cell?

To speed up chemical reactions (correct)
To stop chemical reactions
To slow down chemical reactions
To absorb monomers

A disaccharide forms when....

<p>Two monosaccharides join by a dehydration reaction (B)</p> Signup and view all the answers

Fatty acids are...

<p>Hydrophobic (B)</p> Signup and view all the answers

Study Notes

Phospholipids

Comprised of one glycerol molecule, one phosphate group, and two fatty acids.
Essential for forming cell membranes, providing a hydrophobic barrier.

Monosaccharides

General molecular formula follows C(n) H(2n)O(n).
Basic building blocks of carbohydrates, playing a crucial role in energy storage and supply.

Enzymes

Function primarily to speed up chemical reactions within cells.
Act as catalysts, lowering the activation energy required for reactions.

Disaccharides

Formed when two monosaccharides join through a dehydration reaction.
Common examples include sucrose (table sugar) and lactose (milk sugar).

Fatty Acids

Composed of carbon, hydrogen, and oxygen, typically not in a fixed ratio like carbohydrates.
Characterized by their hydrophobic nature, essential in energy storage and membrane structure.

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Description

Test your knowledge on the fundamental concepts of Biology in chapters 3.1 to 3.11. This quiz covers key topics such as phospholipids and their structures, ensuring a solid understanding of biological molecules. Perfect for students looking to review essential biology concepts.