Lab safety
If I come into class and see a lab set up, should I immediately begin touching materials if I have read through the lab handout?
No
This is the smallest unit of life
Cell
What are the 6 steps to the scientific method?
Observation, hypothesis, experiment, data collection, conclusion, retest
If I pull my hand back from something hot, what characteristic of life is this?
Respond to environment
Water has unique properties because it is a ____ molecule.
Polar
If I spill something or break glass during a lab, what should I do?
Tell Mr. Randolph
Maintaining balance of internal systems (like temperature)
Homeostasis
How is qualitative and quantitative data different?
Qualitative- Observations
Quantitative- amount or numbers
I notice that my puppy looks significantly different from when she was born to now 4 years old. What characteristic is this?
Living things grow
How is cohesion and adhesion different?
Cohesion- sticks to itself
Adhesion- sticks to other things
The only proper technique for smelling substances should be to...
Use a wafting motion
Something that causes a reaction leading to a response to ones environment
stimulus
What are the three things a good experiment needs?
independent variable, dependent variable, control group
I notice that birds fly south when it gets cold out to likely move to warmer areas. What characteristic of life is this?
Adapt to environment
contaminated water typically decreases or increases surface tension?
decreases
What will happen if my friends and I decide to horseplay during Mr. Randolph's lab
You will be removed and receive a zero for the lab
How is an autotroph and a heterotroph different?
Autotrophs can produce their own food, heterotrophs must eat to obtain energy
In the following experiment, identify the independent and dependent variable, as well as the control group:
Mosquito repellent is sprayed on one arm and the other arm is not sprayed. The number of mosquito bites is counted after 2 hours.
I.V.: bug spray
D.V.: number of bites
I notice after 1 day of growing bacteria cultures that there is a little growth, but after 10 days there is a lot of growth with many different colonies, what characteristic is this?
Reproduction
When looking at a molecule of water, the special bonds that hold the oxygen and the hydrogen together are called what?
Hydrogen bonds