Unit 1-7 Biology Review

When a sample of E. coli is viewed under the microscope, the cells do not contain nucleus. The cells viewed are -

• prokaryotes

• eukaryotes

What subatomic particle is found in the space surrounding the nucleus of an atom?

• protons

• electrons

• neutrons

It contains the genetic material of the cell.

• Nucleus

• Golgi apparatus

• Ribosome

• Mitochondria

Matt wants to test which liquid freezes first: Pepsi, milk, or apple juice.  He poured 50 mL of each into separate glasses and placed them in his freezer.  Every ten minutes, he checked his freezer and recorded his observations.  Pepsi froze first, followed by apple juice and then milk.  What is his dependent variable?

• type of liquid
• length of time until frozen
• amount of liquid
• location of freezer

The original cell was put in a solution. The result is A. What happened to the egg? What type of solution was the egg put in?

• The egg got smaller because it was put in an isotonic solution.

• The egg got smaller because it was put in a hypotonic solution.

• The egg got smaller because it was put in a hypertonic solution.

Which function is performed by a nucleic acids?

• provide energy

• function as enzymes

• store genetic information

• form structural materials like muscles and bones

What is this?

• Amino acid

• Nucleotide

• Polysaccharide

• Pyrimidine

Which macromolecule is used as our main source of short-term energy?

• Lipids/Fats

• Nucleic Acids

• Proteins

• Carbohydrates

Who took an X-ray image of DNA (Photo 51) and proposed DNA is a double helix structure?

• Rosalind Franklin

• Watson & Crick

• Erwin Chargaff

• Hershey & Chase

This macromolecule has been associated a great deal with muscle building and is often used during pre- and post workouts to replenish the body of the necessary nutrients it needs to promote increased muscle function and growth. Which macromolecule is made up of a chain of amino acids and allows the muscles to contract making body movement possible?

• carbohydrates

• lipids

• nucleic acids

• proteins