Chapter 1 - Science of Biology
Which variable is manipulated during an experiment?
Independent variable
A subatomic particle with a positive charge is called...
Proton
Water molecules form what type of bond with other water molecules?
Hydrogen bond
What is the monomer of a carbohydrate?
Monosaccharide
What is the main characteristic of a lipid?
Insoluble in water
Name three characteristics of living things
Any of the following:
Cellular organization, organized complexity, sensitivity, growth/reproduction/development, energy utilization, homeostasis, evolutionary adaptation
What type of bond forms between two oppositely charged ions?
Ionic bond
The energy it takes to convert a substance from its liquid to gas form
Heat of vaporization (or evaporation)
Lactose is an example of what type of carbohydrate?
Disaccharide
Which part of an amino acid has the greatest influence over its chemical properties?
R group
What level is at the top of the hierarchy of living things?
Biosphere
What are the electrons in outer energy level of an atom called?
Valence electrons
In lemonade, what would be the solvent: lemon juice/sugar or water?
Water
Dehydration reaction
The final 3D shape of a protein is its ______ structure.
Tertiary
What is the process of maintaining a stable internal environment called?
Homeostasis
An atom that has lost/donated an electron to another atom has been ...
Oxidized
What happens to the hydrogen ion concentration as pH goes down?
Increases (more acidic = more hydrogen ions)
Name two differences between DNA and RNA
Double vs. single stranded, deoxyribose vs. ribose sugar, thymine vs. uracil, different functions
Why is butter solid at room temperature?
Saturated fats only have single bonds. Tightly packed together.
Which hierarchical level is the interaction between all living and non-living things in the same place?
Ecosystem
The element Fluorine (F) has an atomic number of 9 and atomic mass of 18.99. How many protons, electrons, and neutrons? Assuming it's neutral.
9 protons, 10 neutrons, 9 electrons
What would happen to the pH of a buffer solution if I added a base?
Little to no change
Name three components of a nucleotide
Sugar, phosphate, nitrogenous base
Name two types of interactions that have an effect on a protein's tertiary structure.
Hydrogen bonds, ionic bonds, disulfide bridges, van der Waals forces, hydrophobic exclusion