Bio Study Guide Part 2

You have been looking at a slide of a sample of a plant cell under the microscope. When removing the slide it breaks, where should you dispose of the broken slide?

The broken glass container

Blanket used to smother small fires

Fire blanket

Used to put out small fires in the lab

Fire extinguisher

Kit used for any small cuts or injuries that occur in the lab

First aid kit

The idea of spontaneous generation was disproved by _____ in an experiment involving jars of meat

Francesco Redi

You need to measure out 15 ml of distilled water then mix that with 2 g of salt. What is the order of the equipment you would use?

Graduated cylinder, Balance, and a Beaker

An assumed explanation for a problem

Hypothesis

An educated guess or rational explanation about a specific phenomenon

Hypothesis

When driving your car, you hear a squeal every time you press the brakes. You decide the problem is that there's a mouse trapped in the brakes. This is an example of a ____

Hypothesis

Select all that apply. If, after extensive research, the expected observations predicted by a theory fail to materialize, then the theory _____ Is confirmed Is probably false Should be abandoned or modified Should never be retracted

Is probably false Should be abandoned or modified

What piece of lab equipment would you use to conduct a small chemical experiment?

Test Tube

In terms of the scientific method, the purpose of an experiment is:

Test a hypothesis

A recognized means of inquiry to provide scientific answers to questions is _____

The scientific method

The single factor tested in an experiment is:

The variable

A hypothesis that appears to be supported by multiple experiments may be elevated to a general _____

Theory

An explanation for a natural phenomenon that appears to be supported by evidence gathered over a period of time

Theory

Supported by evidence gathered over a period of time

Theory

Before starting a lab you should _____. Select all that apply. Tie loose hair back Clean work table with 10% bleach solution Wear loose clothing Know the location of all exits

Tie loose hair back Clean work table with 10% bleach solution Know the location of all exits

When you are working with chemicals you should _____. Select all that apply -Wear and apron and googles -Use a ventilation hood -Know the location of the fire blanket and fire extinguisher -Wash the area with a 10% bleach solution

-Wear and apron and googles -Use a ventilation hood -Know the location of the fire blanket and fire extinguisher

A hypothesis represents a _____

An educated guess

The testing of a hypothesis in duplicate with only one factor being different

Controlled experiment

This is used when a chemical splash or gas fume has reached the eyes

Eye wash station

The shower is used when a chemical spill has occurred on clothes or in case of a fire

Lab Shower

A universal and absolute fact or truth about a specific action or phenomenon

Law

The statement 2 + 2 = 4 would be considered a _____ in the science world

Law

What is the first step of the scientific method?

Make an observation

The scientific method is limited to investigating physical phenomena that are which of the following? Select all that apply. Observable Repeatable Falsifiable Unique Measurable

Observable Repeatable Falsifiable Measurable

How many factors should a well-designed experiment test at one time?

One

Dioxide and water in the production of glucose and oxygen using the Sun's energy

Photosynthesis

Select all that apply. Which conditions relate to the research of van Helmont? Conducted around 1400 A.D. Demonstrated plant food from soil Plant mass related to H2O Plant mass related only to soil Conclusions partly correct

Plant mass related to H2O Conclusions partly correct

When a chemical spill has occurred on your clothes you should _____

Run under the shower and turn it on

Body of factual knowledge that exists around the world, and the method of study used to arrive at that knowledge

Science

The recognized standard means of inquiry used by research scientists is the _____ method

Scientific

A recognized means of inquiry to provide scientific answers to questions

Scientific method

Scientists use experiments and observations to make logical conclusions about scientific inquiries. This process is called the _____

Scientific method

A work station that shields the user from any toxic or dangerous fumes and vents the substance away

Ventilation hood

Harry notices that one of his houseplants does not grow very well compared to his other houseplants. He asks himself "What is different with this plant that does not grow very well compared with the other house plants?" Harry then goes to his computer to use the internet to look up what other people have done when faced with this problem. Harry then hypothesizes that this houseplant is not getting as much sunlight as the other plants. Which of the following selections defines Harry's problem?

When Harry asks "What is different with this plant that does not grow very well compared with the other house plants?"

A marine biologist wants to investigate the effect of ocean tides on certain aquatic ecosystems. Can this be studied by the scientific method?

Yes