Scientific Method
This is the measurable outcome of an experiment.
The Dependent Variable
What number is the metric system based on?
10
1m= ___________ km
0.001 km
What is the smallest living thing?
A cell
Which scientist looked at cork and name the shape he saw "cells" or " little rooms"
Robert Hooke
What are the items called that must be kept the same?
Constants
What are the base units for mass, volume, and length?
Grams, liters, and meters
100hm=______________cm
1000000cm
Cells + Cells= ?
Tissue
Which scientist discovered that cells come from other living cells?
Virchow
Dr. Smith wants to examine whether a new drug increases the maze running performance of older rats. Just like aging humans, older rats show signs of poorer memory for new things. Dr. Smith teaches two groups of older rats to find a piece of tasty rat chow in the maze. One group of rats is given the new drug while they are learning the maze. The second group is not given the drug. One week after having learned the maze he retests the rats and records how long it takes them to find the rat chow. What is the independent variable in this experiment?
What is the unit for temperature?
Celsius
32g=______________dag
3.2dag
Tissues + Tissues= ?
Organs
Which scientist looked at pond water and dental scrapings and named what he saw "animalcules"
Anton van Leeuwenhoek
Dr. Smith wants to examine whether a new drug increases the maze running performance of older rats. Just like aging humans, older rats show signs of poorer memory for new things. Dr. Smith teaches two groups of older rats to find a piece of tasty rat chow in the maze. One group of rats is given the new drug while they are learning the maze. The second group is not given the drug. One week after having learned the maze he retests the rats and records how long it takes them to find the rat chow. What is the dependent variable in this experiment?
How long it takes them to find the rat chow
What is the method called to find the volume of an irregular solid?
Water displacement
7500mL=_____________hL
0.07500hL
Organs + Organs= ?
Organ System
Which two scientists discovered that both plants and animals were composed of cells?
Schleiden & Schwann
A scientist observed that pineapple plants flower only at certain times of the year. After careful consideration of this phenomenon, the scientist conducted an experiment. She grew five pineapple plants and exposed each to light for a specific period of time each day. Identify the IV, DV, and 3 constants
DV: If the plant blooms
Constants: The type of plant, soil, amount of water, if there is fertilizer or not, the type of light... the list could go on
What type of tool and unit would you use to measure the mass of an apple?
A digital scale or triple beam balance & Grams
0.0030355km=___________________mm
3035.5 mm
Name 5 body systems correctly.
Answers will vary
What are the 3 postulates of the cell theory?
1. All cells come from other living cells
2. All livings things are composed of cells
3. Cells are the basic unit of structure and function