·         Question 1

2.5 out of 2.5 points

  
 

Oxygen has an atomic number of 8. This means that an oxygen atom has

   

 

 

 

 

   

·         Question 2

2.5 out of 2.5 points

  
 

The bond in table salt (NaCl) is

   

 

 

 

 

   

·         Question 3

2.5 out of 2.5 points

  
 

Which of the following bonds is weakest?

   

 

 

 

 

   

·         Question 4

2.5 out of 2.5 points

  
 

Hydrophobic molecules are ____ water.

   

 

 

 

 

   

·         Question 5

2.5 out of 2.5 points

  
 

A water molecule is polar because

   

 

 

 

 

   

·         Question 6

2.5 out of 2.5 points

  
 

What accounts for carbon’s importance to life?

   

 

 

 

 

   

·         Question 7

2.5 out of 2.5 points

  
 

Elephants are large animals because they

   

 

 

 

 

   

·         Question 8

2.5 out of 2.5 points

  
 

Most of the active functions of plasma membranes are carried out by

   

 

 

 

 

   

·         Question 9

2.5 out of 2.5 points

  
 

Which of the following cell features is absent in a bacterial cell?

   

 

 

 

 

   

·         Question 10

2.5 out of 2.5 points

  
 

The following structures are found in all eukaryotic cells EXCEPT

   

 

 

 

 

   

·         Question 11

2.5 out of 2.5 points

  
 

What is the function of ribosomes?

   

 

 

 

 

   

·         Question 12

2.5 out of 2.5 points

  
 

Which of the following are primarily structures for the packaging of cellular secretions for export from the cell?

   

 

 

 

 

   

 

 

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