Which kingdom is found in extreme environments?
Archaea
What is the smallest level of organization that can be considered alive?
Cell
What are autotrophs and heterotrophs and how are they different?
autotrophs-self feeders
heterotrophs- get food from other sources
What are isotopes?
Atoms that have the same number of protons but different numbers of neutrons
On the pH scale, what number is neutral?
7
Which kingdom has a cell wall, but is not photosynthetic?
Fungi
What is a population?
A group of organisms of the same species living in the same place
What is the driving force in evolution?
natural selection
What is mass number and atomic number?
Mass= protons + neutrons
Atomic = protons
What do hydrophilic and hydrophobic mean?
phillic- water loving
phobic- water fearing
Why is kingdom Protista called the "junk drawer" kingdom?
They are very different from each other. Characteristics are not all the same.
What 2 things do all cells have?
A cell (plasma) membrane, and nucleic acid
What is symbiosis? Give an example
When two species live in direct contact.
What are the subatomic particles, their location and their charges?
Protons - positive - inside the nucleus
Electrons - negative - orbiting the atom
Neutrons - neutral - inside the nucleus
What are the steps of the scientific method?
observation, hypothesis, prediction, testing, controls, conclusion
Which kingdoms are classified as prokaryotes?
Bacteria and Archaea
What is homeostasis? Give an example.
Maintaining a stable internal environment. Body temperature, blood pH, blood sugar
What are the three domains?
Bacteria, Archaea, Eukarya
What are the three types of chemical bonds? Describe when they form.
Covalent- shared electrons
Ionic- giving or losing electrons
Hydrogen- weak forces
Name and describe the 2 types of variable
Independent - changes due to the dependent (ex., rate of sugar dissolving)
Dependent- changed by the scientist (ex., temperature increase)
List the 6 kingdoms
Bacteria, Archaea, Protozoa, Fungi, Plants, Animals
What is the organization of life from smallest to largest
atoms, molecules, macromolecules, organelles, cells, tissue, organ, organ system, organism, population, species, community, ecosystem
What are the three parts of the cell theory?
1. All organisms are composed of at least one cell.
2. The cell is the most basic unit of life.
3. All cells come from pre-existing cells.
What is the number of protons, electrons and neutrons?
P and E 13
N 14
What is cohesion and adhesion?
Cohesion – when one water molecule is attracted to another water molecule
Adhesion – when polar molecules other than water stick to a water molecule