Biology Semester I Exam Flashcards
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What are the steps of the scientific method?
- Question
- Research
- Hypothesis
- Experiment
- Record data
- Analyze data
- Conclusion
What are the four parts of the Scientific Theory?
- Explaination of the natural world
- Based on significant evidence
- Tested repeatedly
- Can be changed/rejected from new evidence
What is an independent variable?
It is what you are testing.
What is a dependent variable?
It is what you are measuring.
How does chemistry relate to living things?
All living things are made out of matter and has chemical reactions inside of them.
How does an ionic bond form?
Iconic bonds form when atoms gove or take electrons, which is also transferring.
How is it different than a covalent bond?
Covalent bonds form when they share electrons.
How are covalent bonds related to water molecules?
There are 8 valence electrons being shared.
How are polar molecules related to water molecules?
Both sides are partial.
How are hydrogen bonds related to water molecules?
They have weak attractions.
What is a macromolecule?
It is a polymer made up of monomers.
What does hydrophobic and hydrophillic mean?
Hydrophobic is when it cannot be dissolved in water. Hydrophillic is when polar molecules can be dissolved in water.
What are examples of nucleic acid?
DNA, RNA, and ATP
What are the four macromolecules?
Carbohydrates, lipids, proteins, and nucleic acid
What is a cell?
It is the smallest unit that can carry on all processes of life.
What is the Cell Theory?
- All living things are made up of cells.
- It is the basic unit of life.
- It comes from pre-existing cells.
How do you calculate the total magnification for a compund light microscope?
Multiply the eyepiece with the objective lense. (10x)
What is the hierachy of multicellular organisms?
Cells, tissues, organ, organ systems, and organism.
What is the function of the nucleus?
It controls the center of the cell and contains DNA.
What is the function of the ribosomes?
It makes proteins in the cell.
What is the function of the golgi body?
It prepares celluar products in a cell.
What does selectively permeable mean?
It means that a few things can pass through it.
What is a fluid mosaic?
It is a fluid like water and is constantly changing.
Namne 3 functions of the cell membrane proteins.
- Transportation
- Communication
- Binds to the cutoskeleton
What is diffusion?
Movement of the particles from H to L.
What is osmosis?
Diffusion of water across the cell membrane.
Give an example of a solution. What is the solute and solvent?
Kookaid. The solute is water. The solvent is powder.
What is passive transport?
It is moving materials between H to L and energy is required.
What is active transport?
It is moving marerials from L to H and energy is required.
What is endocytosis?
It is moving materials into the cell.
What is exocytosis?
It is moving materials out of a cell.
What are two body of knowledges about the natural world?
Theories and laws
What are examples of theories?
Cell Theory, atomic theory
What is the process of investigating the natural world?
- Testing hypothesis
- Making hypothesis
- Developing models
How do you go from large to small in the metric system?
Move the decimal to the left or divide by ten for each unit you jump
How do you go from small to large in the metric system?
Move the decimal to the left or divide by ten for each unit you jump
What is the base of the metric system?
1
What is deci?
.1
What is centi?
.01
What is milli?
.001
What is deka?
10
What is hecta?
100
What is kilo?
1000
What is a data table?
Organize the information collected from experiments or research
What is a graph?
Provides a clear picture of numerical relationships
What does a data table need?
Title, columns with headings, units
What does a graph need?
Title, axes, labels, units, numbera on axes
What are the two types of graphs?
Line and bar graph
Love of loving
-phile/philibic
Fear of; fearing
-phob/phobic
One
Mon/mono-
Many
Poly-
Large
Macro-
Breaks
-lysis
Sugar
-ose
Nucleus
-Karyo
True
Eu-
Before
Pro-
Cell
Cyto-
More than one
Multi-
More than/above/higher
Hyper-
Less than/below/lower
Hypo-