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bio mid-term review sheet
biology midterm
11
Biology
9th Grade
01/09/2013

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Cards

Term
1.) identify the ph values for an aci neutral or basic sulution a. acid is less than 7. neutral 7 and basic is above 7 
Definition
2.) name the indicator for glucose a. benedicts solution
Term
3.) name the indicator for starch. A. iodine 
Definition
4.) what does an indicator do to indicate a positve result? a. a color change 
Term
5.) how do u read the volume  of a graduated cylinder? a. the bottom of the meniscus 
Definition
6.) what part of the microscope is used to focus the microscope on low power? on high power? a. low power-coarse adjustment high power- fin adjustment  
Term
7.) what controls the amount of light on a microscope? a. diaphragm 
Definition
8.) wahat is the purpose of staining ? a. to make cell organelles more clear for us to see in the microscope 
Term
9.) how do u determine the total magnification of a compound microscope  a. multiply the eyepeice with the objective lens 
Definition
10.) what do you have to do to have a valid experiment? a. control, one variable amd similar results after many trials. 
Term
11.) what is control a. the part of the experiment that does not change 
Definition


12.) what is an experimental group a. the part of the experiment that changed  

Term
13.) how many items can be different between a control and an experimental group in order for the experiment to be valid  a. only the one variable 
Definition
14.) what are some of the safety tips to use in the lab  a. goggles apron hair tied up etc 
Term
define diffusion they are small enough to fit through the membrane 
Definition
starch is too big to fit through the membrane 
Term

define osmosis a. its the diffusion of water only           

a. water moves out of a cell so it shrinks 

a. you place a dropper on one side of the coverslip and a paper towel to absorb the liquid coming out 

a. distilled water or regular water 

Definition

transport 1. the movement of molecules from high concentration to low concentration requires no energy is known as diffusion 

2. if you place a cell in a solution that has a higher salt concentration than the cell the cell will lose water and shrink 

3. if you place a cell in a solution that has a lower salt concentration than cell the cell will gain water and expand (possibly burst)

Term

4.define active transport 

a. the process of moving substances from low to high with energy 

5. the source of energy for active transport is atp.

cells 1 list the organizational levels starting with organelles and ending with organism 

a. organelles cells tissues oragn organ system organism 

Definition

2. list the 3 parts of the cell theopry 

a. all cells come from pre- existing cells all living things are made up of cells  cells are the basic structure and function of all living things 

3. where is the largest amount of dna found 

a. the nucleus 

Term

4. what is the function of the mitochondria 

a. to make energy during celluar respiration 

5.  what are the differences between plant and animal cells 

a. plant cells have a cell wall and chloroplast. animal cells have centrioles 

6. what are the differences between unicelluar and multicellular. a. unicellualar is one multicellular is many cells

Definition

7. what is the function of the chloroplast. 

a. the site for photosynthesis

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