Biology introduction

Lemon trees receiving the most water produce the largest lemons. Choose the independent variable:

Amount of water

The state agriculture department has been counting the number of foxes in Brown country. Will the number of foxes have any affect on the rabbit population? Choose the correct constant

Brown country

Which of the following is the fundamental unit of structure and function in living organisms?

Cells

True or false: Return all unused chemicals to their original containers.

False

Which of the following is NOT a characteristic of a living organism?

Food

You need ________________ when dealing with chemicals close to your eyes.

Goggles

Use the following scenario to answer the questions below: Mr. Krabbs wants to make bikini bottoms a nicer place to live. He has created a new sauce that he thinks will reduce the production of body gas associated with eating crabby patties from the krusty krab. He recruits 100 customers with a history of gas problems. He has 50 of them (group A) eat crabby patties with the new sauce. The other 50 (group B) eat Krabby Patties with sauce that looks like new sauce but it's really just mixture of mayonnaise and food coloring. Both groups were told that they were getting the sauce that would reduce gas production. Two hours after eating the crabby patties, 30 customers and grab a report having if you were does poems and eight customers in Group B reported having few were gas problems What is the control group?

Group B

The balance of the ever changing environment.

Homeostasis

Use the following graph to answer the question. Letter D is used for what variable.

Independent variable

This picture represents what theme of biology?( grass being eaten by a rat, an owl eating the rat)

Interdependence

Why are repeated trials important?

It allows the investigator to collect accurate data

Which statement best describes a testable hypothesis?

It is an expression of a relationship between an observable and measurable variables.

The time it takes to run a kilometer depends on the amount of exercise a person gets. Choose the correct dependent variable.

Kilometer time

What is the independent variable?

New sauce

If a laboratory fire erupts, immediately

Notify the teacher

In the salsa lab, what was the control?

The base line temperature

In creating a graph correctly, which goes on the y-axis?

The dependent variable

Ten frogs were placed in a large container with three sections. Each section had equal amongst of light, shelter, food and water. Each section was painted a different color: red, green, or blue. Daily observations were made of the frogs' locations for six weeks. These data were compiled to produce the following frog location frequencies. Which of the following is/are the constant(s)?

The light, shelter, food, and water

Students conducted an experiment testing the effects of different colors of light on the amount of oxygen produced by photosynthesis. They used the same plant in each trial and held all other variables constant. Their data is shown in the table below.

The type of light

The class was assigned a project in which they had to design an experiment that would test the effect of temperature on the number of times a cricket chirps per minute. Identify the independent variable

The various temperatures

True or false: Hot glass looks the same as cold glass.

True

The "happy scientist" said that an observation must be based on

What you can see, hear, taste

if a piece of equipment is not working well, stop, turn it off and tell

Your instructor

In a laboratory, the following should not be worn? a. Hair tied back b. Dangling jewelry c. Closed toe shoes d. Goggles and an apron

b. Dangling Jewelry

Students are preparing potted plants for an expert. Their workspace contains only a bag of ammonium sulfate fertilizer, a bag of soil, seeds, clay pots, and a sink. Which of the following pieces of safety equipment should be available for this experiment? a. Fire extinguisher b. Eyewash station c. Bucket of sand d. Baking soda

b. Eyewash station

Which of the following statements is false? a. All living organism's structures correlate to their functions b. All organism's are effected by their environments c. Organism's only reproduce sexually d. Only physical traits are passed on to offspring

c. Organism's only reproduce sexually

An activity is designed that requires a student to heat a test tube of rubbing alcohol in a hot-water bath. A glass thermometer is used to measure temperature changes. A safety checklist for this activity should include the presence of a fire blanket and all the following items expect a— a. Proper lab apron b. Receptacle for broken glass c. Safety goggles d. Acid neutralizer

d. Acid neutralizer

When gathering glass wear and equipment for an experiment, you should a. Examine all glass wear for chips of breaks b. Clean any glass wear that seems dirty c. Read directions, carefully to know what equipment is needed d. All of the above

d. All of the above

A student leaves an air-conditioned room and goes outdoors where the temperature is over 100°F. Which of these is BEST describes how the student's body maintains homeostasis? a. Lung breaths faster b. Muscles increase activity c. Blood vessels widen d. Skin begins to sweat

d. Skin begins to sweat

The sum of chemical reactions and take and TRANSFORM energy.

metabolism

It is always important to read the potential safety hazards when working with a chemical. The ingredients described above are used in an industrial cleaning agent. The most important safety precaution to take when using this cleaning agent is to-- a. wear a lab coat b. work in a well-ventilated area c. cover the work area with flame retardant d. light the work area with a small flame

b. work in a well-ventilated area