IB Biology - Topic 1 - Cell Biology

Data that is measured and expressed in descriptions is called

• quantitative data
• qualitative data
• forged data
• minute data

Data that is measured and expressed in NUMBERS is called

• quantitative data
• qualitative data
• forged data
• minute data

Bias occurs when a scientist uses a preference or a particular point of view that is personal rather than scientific. 

• True
• False

If cells of a multicellular organism have the same genes, how can there be many different cell types in a body?

• Some genes but not others are expressed in each cell type.

• Cells lose some genes as development occurs.

• Genes do not determine the structure of a cell.

• Cells must practice division of labour in order to survive.

Which of the following is NOT part of the cell membrane?

• Lipids
• Carbohydrates
• Proteins
• Nucleic Acids

What forms the channels and pumps in the phospholipid bilayer?

• carbohydrates
• proteins
• hydrophilic heads 
• lipids

The function of the plasma membrane is....

• to regulate what enters and leaves the cell.
• fight bacteria and viruses that enter the cell.
• provide rigid support and protection to the cell.
• make sure each cell can move

Hydrophilic means...

• water-loving
• water-fearing
• nonpolar
• lipid soluble

Hydrophobic region of the cell membrane?

• E
• B
• C
• A 

A phospholipid has 2 parts. What are they called? 

• Hydrophilic Head, Hydrophobic Tail 
• Hydrophobic Head, Hydrophilic Tail