Evolution
What is Natural Selection?
This is when only the strong survive. Species change over time to be better suited for the environment. This is done in a natural state.
Life emerges at the level of what?
The Cell
In the metric system, what is the base unit for length?
Meters
Are water molecules polar or non-polar?
Water molecules are polar.
What type of polysaccharide is glycogen?
Glycogen is a branched polysaccharide
Are mutations usually beneficial or usually harmful?
How beneficial or harmful mutations are depends on the environment.
What are the three domains of life?
The domain of bacteria, domain of archaea, and domain of eukarya
How many µg are in 1 gram?
1000000 µg = 1 gram
What do you call a nitrogen atom that gains a proton?
It would turn into an oxygen atom.
What reagent would you use to detect proteins?
Biuret Reagent
What is Artificial Selection?
Genetically modifying something to be better for the environment. Ex. Meat, eggs, chickens. This is done by humans.
The independent variable effects what?
The independent variable has an effect on the dependent variable.
What is a meniscus?
The meniscus is small dip in the water when measuring in a cylinder.
What is meant by terms acidic, basic, and neutral?
Acidic - having a pH below 7
Basic - having a pH greater than 7
Neutral - is a pH of 7 on the scale
What type of bonds stabilize the tertiary structure of a protein?
There are a combination of bonds that stabilize the tertiary structure of a protein. They include; hydrogen bonds, ionic bonds (salt bridge), disulfide bonds, hydrophobic interactions, and van der Waals forces.
How do bacteria become resistant to antibiotics?
Bacteria becomes resistant to antibiotics by genetic mutations that occur during replication. This allows some bacteria to develop defense mechanisms to the antibiotic enabling them to survive and reproduce while the susceptible are killed off.
Describe the independent, dependent and confounding variables of an experiment.
Independent Variable - A variable that does not depend on that of another
Dependent Variable - A variable that does depend on that of another
Confounding Variable - May distort or mask the effects of another variable
What is the base unit for mass?
Grams
How does ocean acidification affect marine life?
Ocean acidification can affect marine life by eating away minerals used by oysters, clams, lobsters, shrimp, and coral reefs that allow them to build and maintain their Shells and skeletons. This can disrupt entire marine food chains
What is the monomer of nucleic acids?
The monomer of nucleic acids is a nucleotide
Why is radiometric dating important for studying evolution?
Radiometric dating is important for studying evolution because it provides a reliable way to determine the age of fossils and rock layers.
Why is it important to control for confounding variables in an experiment?
Because they can alter the course of the experiment giving false documentation. This means the results would not be as accurate as they could be.
How many meters are in a kilometer?
1 km = 1000 m
What are the emergent properties of water that support life on Earth?
cohesion, adhesion, high surface tension, high specific heat, high heat of vaporization. Also the fact ice floats.
How can a single amino acid change and influence the function a protein?
It can influence the function of a protein by altering its three-dimensional structure. This is directly related to its ability to interact with other molecules and perform its biological role.