AP Bio Unit 2

Liver cells are specialized cells that carry out a multitude of tasks, including the synthesis of cholesterol and the breakdown of protein metabolites. These cells would be expected to contain a large proportion of which organelle relative to all others?

• smooth ER

• rough ER

• golgi

• nucleolus

In a bacterial cell, one of the subunits of the ribosome is called 30s and is composed of about 20 different proteins. A mutation occurs that changes the structure of one of these proteins.  What effect will this most likely have on the bacterial cell?

• It would stimulate binary cell fission and the cell would divide uncontrollably.
• The cell would be unable to properly synthesize proteins.
• Development of abnormal hereditary features would occur in the cell.
• Increased protein absorption would occur through the cell membrane

Tags

NGSS.HS-LS3-2

Which of the following is evidence to support the endosymbiotic theory?

• Mitochondria and chloroplasts have their own DNA, which is similar to prokaryotic DNA.

• Fossil evidence shows that the first forms of life were prokaryotic cells.

• All eukaryotic cells have a double-layered membran composed of phosplipids and proteins.

• Prokaryotes have the same number and types of enzymes as eukaryotes.

Tags

NGSS.HS-LS4-1

Drinking seawater is dangerous to humans because

• the water is a hypertonic solution.
• the water is a hypotonic solution.
• the water is an isotonic solution.
• the water is poisonous.

Tags

NGSS.HS-LS1-3

Movement of water across a selectively permeable membrane is known as ___.

• osmosis
• active transport
• exocytosis
• facilitated transport

Which of the following membrane components strengthens and stabilizes the cell membrane?

• Carbohydrates 
• Proteins 
• Phospholipids 
• Cholesterol

What type of transport is represented by figure "B" 

• Active Transport
• Facilitated Diffusion 
• Protein Transport 
• Osmosis 

Which of the following cells would have the highest surface area to volume ratio?

• 1
• 2
• 3
• they are all the same

Which of the following processes requires the cell to spend energy in the form of ATP?

• active transport
• passive transport
• diffusion
• osmosis

Which form of active transport is being shown? (Inside of  the cell is tan colored) 

• Facilitated Diffusion
• Exocytosis
• Endocytosis
• Receptor-mediated endocytosis