Shared Flashcard Set

Details

Actual Midterm Review
This is questions straight off of Mrs. Thomas's Midterm Review 2011/2012
21
Biology
10th Grade
01/18/2012

Additional Biology Flashcards

 


 

Cards

Term
What is biology?
Definition
The study of life.
Term
What are the characteristics of life?
Definition
All living things are organized, reproduce, grow and develop, and adapt to their environment.
Term
What are the five themes of biology?
Definition
1. Energy: the ability to "do work".
2. Systems and interactions: all organisms are interacting systems and all interact with each other.
3. Unity within diversity: at basic level, all organisms are the same.
4. Homeostasis: internal balance.
5. Evolution: change over time.
Term
What are the five steps of the Scientific Method?
Definition
1. Observe
2. Hypothesis
3. Experiment
4. Conclude
5. Repeat/Form a Theory
Term
Define: Independent Variable
Definition
you control this.
Term
Define: Dependent Variable
Definition
depends on the experiment.
Term
Define: Controls
Definition
a group sample or test.
Term
Define: Qualitative data vs. quantitative data
Definition
Description vs. Numbers
Term
What are the units for length, volume, and mass in the Metric System?
Definition
Meter (M) Liter (L) Gram (G)
Term
What are the unique properties of water?
Definition
1. Water is the only substance which contracts on heating from a temperature of zero degrees to four degrees celsius and expands on cooling from four degrees celsius to zero degrees celsius.
2.Water can be change to all three forms of matter.
Term
What are the classes of organic compounds?
Definition
Lipids, proteins, carbohydrates, and nucleic acids.
Term
What are the properties and uses for Carbohydrates?
Definition
Carbohydrates are sugars. There are 3 types of carbs. Monosaccharides, dissacharides, and plysaccharides.
Term
What are the properties and uses for proteins?
Definition
Proteins are the building blocks of all organisms. they are made of long chains of amino acids (the monomer unit of proteins). There are 20 different amino acids. A special type of protein is called an enzyme.
Term
What are the properties and uses for lipids?
Definition
Lipids are fatty organic molecules that contain a large portion of carbon and hydrogen bonds, with very little oxygen. They are insoluble in water. There are 3 types of lipids: fats, oils, and waxes. Their purpose is long term for storing energy and insulation/protection
Term
What are the properties and uses for Nucleic Acids?
Definition
There are two types: DNA and RNA.
Term
Define: DNA
Definition
Deoxyribonucleic acid: genetic code and heredity.
Term
Define: RNA
Definition
Ribonucleic acid, helps make proteins.
Term
What are enzymes?
Definition
They are a special type of protein. Their purpose is to speed up chemical reactions. They are specific to certain reactions and many end in the letters '-ase'. They will break down at high temperatures or two high/ too low pH. The 'Lock and Key' theory is substrate fits into the active site of an enzyme like a lock fits into a key.
Term
What does it mean to denature an enzyme?
Definition
Denaturing an enzyme means "unwrapping" it and basically making it non-functional.
Term
What are some things that will denature an enzyme?
Definition
1. High temperatures
2. Change the pH (each enzyme has a different level that would make it unravel)
3. And salt concentrations
Term
What indicators are used for each of the types of organic molecules?
Definition
Starch: Iodine (positive: Blue, black, purple. Negitive: brown.)
Simple Sugars: Bendicts soultion (positive: Negitive:)
Proteins: biuret (positive: purple negitive: blue)
Lipids: light/brown paper
Supporting users have an ad free experience!