Biology Checkpoint Review

The diagram shows a container divided into two compartments by a membrane permeable to water but not to starch. Two solutions containing different concentrations of dissolved starch were placed on each side of the membrane. Which of the following describes what will happen to the water level during the process of osmosis?  

• The water level of both sides of the membrane will decrease 
• The water level on the right side of the membrane will increase 
• The water level on the left side of the membrane will increase
• The water level on both sides of the membrane will stay the same 

An animal cell placed in a sugar solution is shown in the diagram. Which statement best describes how osmosis will affect this animal cell?  

• Water will move out of the cell and the cell will shrink
• Water will move into the cell and the cell will expand 
• Sugar will move out of the cell and the cell will expand 
• Sugar will move into the cell and the cell will expand

In order to make hydrochloric acid, which is required in human digestion, ATP is used to move hydrogen ions from the blood to the stomach lining. This is an example of ___.   

• Active Transport
• Passive Transport
• Osmotic Potential 
• Facilitated Diffusion

In active transport, carrier proteins ___.  

• Move substances across the cell membrane without the use of ATP.
• Move from low concentration to high concentration by diffusion
• Move small molecules through the cell membrane by osmosis 
• Move substances from a low concentration to high concentration through the use of energy.

The diagrams show the stages of mitosis in random order.  What sequence correctly shows the stages of mitosis?             

• 3-1-2-4
• 1-3-4-2
• 4-2-3-1
• 2-1-4-3

A daughter cell that resulted from a mitotic division has 24 chromosomes.  How many chromosomes did the parent cell have?   

• 6
• 12
• 24
• 48

A bone cell of a goat contains 60 chromosomes.  How many chromosomes will be in each daughter cell after mitosis? 

• 15
• 30
• 60
• 120

What must occur during the cell cycle to ensure proper division of the chromosomes?  

• The cell must grow in size
• The mitochondria must divide 
• The DNA of the cell must replicate
• The cell membrane must dissolve

The main purpose of DNA replication is to ___.  

• Capture sunlight
• Store energy in the bonds of a glucose molecule
• Synthesize proteins 
• Copy genetic information 

The figures below show four processes involving DNA and RNA.  Use these figures to answer the next question. 
Which figure shows the process of replication?

• figure 1
• figure 2
• figure 3
• figure 4