Week One Review
This characteristic of life refers to an organism's ability to keep its internal conditions relatively stable despite changes in its external environment.
What is homeostasis?
Lactose is an example of this macromolecule.
What are carbohydrates?
This property of water allows water molecules to stick to each other, helping create surface tension.
What is cohesion?
In this type of bonding, electrons are shared between atoms.
What is covalent bonding?
These are a specific combination of bonded atoms that always react in the same way.
What are functional groups?
A plant growing toward sunlight is an example of this characteristic of life.
What is response to stimuli?
Nucleotides are the monomer of this macromolecule.
What are nucleic acids?
This property allows water molecules to stick to other surfaces, such as the walls of a plant's xylem.
What is adhesion?
In this type of bonding, electrons are transferred between atoms.
What is ionic bonding?
-OH
Hydroxyl Group
In an experiment testing whether different amounts of fertilizer will affect plant growth, the amount of fertilizer is this variable.
What is the independent variable?
This macromolecule is hydrophobic and plays a large part in membrane formation.
What are lipids?
Due to this property of water, water can resist changes in temperature because a lot of energy is required to break its hydrogen bonds.
What is high heat capacity?
In this type of bonding, electrons are shared equally between atoms.
What is nonpolar covalent bonding?
PO4
Phosphate Group
This variable is what a scientist measures or observes to determine the effect of the independent variable.
What is the dependent variable?
Aminos acids that are joined by peptide bonds are known as this.
What are polypeptides?
This property of water results from cohesion between water molecules and allows some small organisms to move across the surface of the water.
What is surface tension?
In this type of bonding, electrons are shared unequally between atoms.
What is polar covalent bonding?
-CH3
A scientist tests whether a new drug increases plant growth. She gives one group the drug, and another group no drug, while keeping the light, water, soil, etc. the same. The group receiving no drug serves as this in the experiment.
What is the control group.
These two structures are common forms of a protein's secondary structure, formed due to hydrogen bonding.
What are alpha helix and beta pleated sheet?
Water has a high value for this property, meaning it takes a large amount of heat energy to change from a liquid to a gas.
What is heat of vaporization?
This is the attraction of an atom for electrons in a covalent bond.
What is electronegativity?
-NH2
Amino group