Cell Basics
Proks vs Euks
Homeostasis
DNA Discovery
DNA Structure
100
All existing cells are produced from:
A. DNA
B. Other living cells
C. Seeds
D. Atoms
B. Other living cells
100
What is the name of the organelle that contains DNA (genetic material) in Eukaryotic Cells?
The Nucleus
100
Which body system plays a central role in regulating homeostasis?
A. Muscular system
B. Nervous system
C. Skeletal system
D. Digestive system
Nervous system
100
When Griffith injected the heat-killed strain of the S bacteria into the mice, the mice _______________.
lived!
100
How many types of nitrogenous bases are present in DNA
4
200
Which of the following is not part of the Cell Theory?
A. All cells are made up of existing cells
B. All organisms are made up of one or more cells
C. The cell is the basic unit of structure of function in organisms
D. Single celled organisms are not living
D. Singled celled organisms are not living
200
True or False: Eukaryotic organisms are only multicellular
False: Eukaryotic organisms can be unicellular (Amoebas)
200
Which of the following is an example of a process that is regulated by homeostasis?
A. Digestion of food in the stomach
B. Blinking of the eyes
C. Growth of hair and nails
D. Regulation of blood glucose levels
Regulation of blood glucose levels
200
Avery showed that if the _________ was destroyed by an enzyme, Griffith's transformation didn't occur.
DNA
200
Create the complementary DNA sequence:
ATTGAC
TAACTG
300
What three structures do plant cells have that animal cells do not?
Central vacuole
Chloroplasts
Cell Wall
300
True or False: Prokaryotic cells tend to be smaller than Eukaryotic
True
300
Is this an example of positive or negative feedback?
When the body gets injured the major threat to life is excessive loss of blood. Blood pressure and blood flow at the site of injury are reduced. At the site of the injury, blood clotting factors are released to initiate blood clotting. Once the process begins it promotes the clotting process further. Clotting factors are responsible for the formation of a clot in the injured or wounded area until the clotting stops.
Positive feedback
300
Hershey and Chase used what organism to confirm that DNA was the genetic material?
Bacteriophages (phages)
300
The overall shape of the DNA molecule is a:
Double Helix
400
Which small organelle links amino acids together to form proteins?
Ribosomes
400
True or False: Eukaryotic cells evolved before Prokaryotic because they are more complex.
False.
400
How does the body regulate body temperature when it rises above the set point?
A. By shivering to generate heat
B. By dilating blood vessels to release heat
C. By sweating to cool down
D. By increasing metabolic rate
C. By sweating to cool down
400
Before it was discovered that DNA is the genetic material, what did scientists believe carried life's genetic data?
Proteins
400
The three molecules that make up a nucleotide are:
Nitrogenous base (A, T, C, G)
Phosphate
Deoxyribose sugar
500
True or False: In order for cells to function they must be small. In addition, they need to have a large surface area to volume ratio.
True.
500
What is the name of the organelle that processes, sorts, and delivers proteins in eukaryotic cells?
Golgi apparatus
500
What part of the body is considered the control center in maintaining homeostasis?
The brain
500
Who's photographs did Watson and Crick use (without consent) to complete their model of the DNA molecule?
Rosalin Franklin's
500
What type of bond connects sugars and phosphates in the backbone of a DNA molecule
Covalent Bond