Experimental Design
Diversity of Life
Lab Procedures
Surprise
100
Dan studied the effect of temperature on tadpole growth. Three groups of tadpoles were placed in water of varying temperatures. One group was placed in room temperature (normal) water. One group was placed in cold water and left in a refrigerator. One group was placed in hot water and left under a heat lamp.
What is the Independent Variable?
Temperature
100
This is the branch of biology that deals with classifying and naming living things.
Taxonomy
100
What is the name of the lab tool used to measure small volumes of liquid?
Graduated Cylinder
100
What does biology mean?
The study of life
200
Dan studied the effect of temperature on tadpole growth. Three groups of tadpoles were placed in water of varying temperatures. One group was placed in room temperature (normal) water. One group was placed in cold water and left in a refrigerator. One group was placed in hot water and left under a heat lamp.
What is the dependent variable?
Tadpole Growth
200
A scientific name contains how many words?
2
200
What is the name of the little dropper that can be used to pick up and transfer small amounts of liquid?
Pipet (pipette)
200
Dan studied the effect of temperature on tadpole growth. Three groups of tadpoles were placed in water of varying temperatures. One group was placed in room temperature (normal) water. One group was placed in cold water and left in a refrigerator. One group was placed in hot water and left under a heat lamp.
Write a hypothesis for this experiment.
It should be any form of the hypothesis below:
(Increased/decreased) temperature can (increase/decrease) tadpole growth.
300
Dan studied the effect of temperature on tadpole growth. Three groups of tadpoles were placed in water of varying temperatures. One group was placed in room temperature (normal) water. One group was placed in cold water and left in a refrigerator. One group was placed in hot water and left under a heat lamp.
What is the control group?
The group in normal water.
300
Identify THREE of the 8 Characteristics of Life.
Groups must choose three:
1. Made of Cells
2. Displays Organization
3. Growth and Development
4. Reproduction
5. Response to the Environment
6. Obtain and Use Energy
7. Maintain Homeostasis
8. Contain DNA and Evolve
300
What is the metric unit for distance (length)?
Meter
300
When preparing a wet mount slide, you place a drop of water on the specimen and then drop the coverslip at a 45 degree angle. Why is it important to drop the coverslip at this angle?
To avoid the formation of air bubbles.
400
Dan studied the effect of temperature on tadpole growth. Three groups of tadpoles were placed in water of varying temperatures. One group was placed in room temperature (normal) water. One group was placed in cold water and left in a refrigerator. One group was placed in hot water and left under a heat lamp.
What is the experimental group(s)?
The group in cold water and the group in hot water.
400
What is a tool used to identify organisms based on characteristics, in which each step contains two choices?
Dichotomous Key
400
What is the metric unit for volume (amount of liquid)?
Liter
400
Dan studied the effect of temperature on tadpole growth. Three groups of tadpoles were placed in water of varying temperatures. One group was placed in room temperature (normal) water. One group was placed in cold water and left in a refrigerator. One group was placed in hot water and left under a heat lamp.
What are THREE constants for this experiment?
Answers may vary but could include:
1. Number of test subjects per group
2. Species of tadpole (frog)
3. Amount of time for experiment
4. Location for experiment
5. Amount of food given to tadpoles
500
What are TWO ways to increase the validity of this experiment?
Must include 2 of the 3 options:
1. Repeat the experiment
2. Increase sample size
3. More experimental groups
500
What is the order of the 8 groups for classifying life, starting with the largest and ending with the smallest (species).
Domain, Kingdom, Phylum, Class, Order, Family, Genus, Species
500
What is the exact measurement of liquid in this graduated cylinder, in mL?
38 mL (read under the meniscus)
500
The naming system in which organisms are named by their genus and their species is called...
Binomial Nomenclature