Unit 2
Experimental Design 1
Experimental Design 2
Surprise!
Unit 3 & 4
100
An unknown 'thing' was observed moving, shrinking when exposed to light, breathing, getting larger over time, and making identical copies of itself. What are two characteristics of life observed here?
Responding to stimuli
Growing
Reproducing
100
A student wants to test how different amounts of sunlight affect plant growth. What is the independent variable?
The amount of sunlight the plants receive
100
Qualitative or Quantitative? : The foam rose by 20ml.
Quantitative
100
1. A group of students gathers their materials for the lab and notes they have 40 ml of blue solution and 2 white tablets. Is this an observation of Exerpimental DESIGN or is it DATA?
2. A group of students is observing pillbugs in a choice chamber. As the experiment progresses they count 10 pillbugs on the side of the chamber with the disco light in it.
1. Design!
2. Data!
100
Draw an example of a nucleotide and label each component.
Should have a phosphate connected to a sugar, connected to a base.
200
Put these items in order from smallest to largest according to hierarchy: 1) forest preserve 2) digestive system 3) robin 4) deer, plants and birds 5) flock of robins
2 digestive system --> 3 robin --> 5 flock of robins --> 4 deer, plants and birds --> 1 forest preserve
200
A scientist tests if music affects how fast hamsters run on a wheel. What should the scientist measure as the dependent variable?
Speed of hamsters
200
Does the IV or the DV go in the "if" part of a hypothesis?
The IV
200
Label a, b, c & f:
d. & e. are BOTH the enzyme + substrate complex
a. enzyme!
b. active site!
c. substrate
d & e. enzyme + substrate complex
f. products
200
How does tRNA play a role in protein synthesis?
tRNA brings amino acids during translation
300
What are two separate differences between passive and active transport?
-Passive does not need energy while active does
-Passive transport moves things down their concentration gradient while active moves them up it
-Active ALWAYS uses a transport protein passive only sometimes does
300
Students test if the type of liquid (water, soda, juice) affects how fast seeds germinate. What is the IV?
The type of liquid
300
What goes in the "then" part of a hypothesis?
The DV
300
antibody
antigen
pathogen
300
A tRNA molecule has an anticodon of CAU. Which amino acid would it carry over to the ribosome?
Valine
400
What are the monomers/subunits of proteins, carbohydrates and lipids?
Proteins = amino acids
Carbs = monosaccharides
Lipids = glycerol and fatty acids
400
A teacher sets up two fish tanks: one with fertilizer added and one without. Give a possible hypothesis for this experiment.
If _________, then __________. (answers vary)
400
A group of students tested a red lightbulb on the effectiveness of photosynthesis on a plant. They placed a second plant under full sunlight. What is the control group?
Plant under sunlight
400
Be the first group to stand up and shout "Hooray!"!
Hooray! :)
400
What structural characteristics do all viruses share?
Capsid and genetic information (DNA or RNA)
500
Draw an example of a cell in a beaker of water where the water would move into the cell. Show the percent solute AND solvent at the start that would cause this to happen.
Your cell should have a lower water concentration/higher solute than the beaker does.
500
Researchers are observing the effect of adding growth hormones to oak trees. What is one example of QUALITATIVE data and one example of QUANTITATIVE data they could collect?
Answers may vary!
Qualitative = descriptive
Quantitative = numerical
500
A pharamicist set up a study to determine whether Vitamin C could reduce cold symptoms. 10 volunteers were split into two equal groups. For two weeks, members of Group 1 took 1 tablet of the Vitamin C. Group 2 took a placebo (a sugar pill that does not contain the supplement). At the end of the two-week period, the pharmacist exposed the volunteers to germy preschoolers. The volunteers in both Group 1 and Group 2 continued to take their daily pills. All the volunteers developed symptoms of a cold, and there was no significant difference in the length of time the cold symptoms lasted. Make a claim about the Vitamin C.
The Vitamin C was ineffective in reducing cold symptoms.
500
Draw an example of a phospholipid. Label its head and tail AND identify which side is hydrophobic and which is hydrophilic.
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500
How do B cells and Killer T cells help your immune system work properly? Describe the role of each.
B cells make antibodies
Killer T cells destroy infected body cells