Introduction to Biology

Question 1

Define homeostasis and give three examples:

Answer 1

The maintaining of a stable internal environment
~ Sweating
~Shivering
~ pH blood level

Question 2

What is the difference between asexual and sexual reproduction?

Answer 2

Asexual means you only have one parent and sexual means you have two parents.

Question 3

Which type of reproduction (sexual or asexual) gives rise to greater diversity and why?

Answer 3

Sexual, you get genes and DNA from both of your parents whereas with asexual you would only get it from your one parent.

Question 4

What characteristic do ALL living organisms share? This is also the hereditary material of all living things. (HINT: It is inside the nucleus of your cells.)?

Answer 4

DNA

Question 5

Are cells organized?

Answer 5

Yes

Question 6

What’s the difference between unicellular and multicellular?

Answer 6

Unicellular means you only have one parent and multicellular means you have two or more parents.

Question 7

What is the difference between an autotroph and heterotroph?

Answer 7

An autotroph makes its food from the energy the sun gives off and heterotrophs get there energy from eating other things.

Question 8

Give an example of autotroph and heterotroph.

Answer 8

Autotroph: Plants
Heterotroph: Humans and Animals

Question 9

What is biology? List three things you might study if you were a biologist.

Answer 9

Biology is the study of all living things. If I were a biologist I would study Animals, Humans, and Insects.

Question 10

What is the purpose of science?

Answer 10

The purpose of science is to increase the knowledge of the universe to people ; so we can answer and solve questions.

Question 11

What do members of a species (as a whole) HAVE to be able to do to ensure its survival?

Answer 11

Evolve

Question 12

In your own words describe one of the experiments you have conducted in the class.

Answer 12

We dropped a tennis ball from different heights using a meter stick and saw how high the ball bounced.

Question 13

Describe what an independent variable is:

Answer 13

The thing in an experiment that you can change.

Question 14

What was the IV in the Tennis Ball Lab?

Answer 14

The drop height.

Question 15

Describe what a dependent variable is:

Answer 15

Variable that results or responds to the change.

Question 16

What was the DV in the Tennis Ball Lab?

Answer 16

Bounce Height

Question 17

Describe what a control is:

Answer 17

Group that does not get the IV

• -> Standard for comparison
• -> The “Normal” version

Question 18

Why is it so important to have a control group?

Answer 18

So that you know what the experiment would’ve ended up doing if you didn’t have an IV.

Question 19

Describe what a constant is

Answer 19

Something that stays the same throughout an experiment

Question 20

Why is it important to only change one variable at a time?

Answer 20

So that you know which variable made the difference.

Question 21

When conducting research where would you find the most current and reliable information about a scientific topic?

Answer 21

Scientific journals

Question 22

Describe Pasteur’s experiment:

Answer 22

If cells arise from nonliving substances, then they will appear in sterile broth.

Question 23

Describe Redi’s experiment:

Answer 23

Only flies can make flies. Rotting meat cannot be transformed and it cannot make flies.

Question 24

What were Pasteur and Redi trying to disprove?

Answer 24

That flies and maggots don’t come from meat and that cells are not spontaneously generated.

Question 25

What unit is the metric system based on?

Answer 25

10

Question 26

How many millimeters are in a centimeter?

Answer 26

10

Question 27

What piece of lab equipment can be used to find the volume of an irregular object?

Answer 27

Graduated Cylinder

Question 28

What variable do you label the X-Axis with?

Answer 28

IV

Question 29

What variable do you label the Y-Axis with?

Answer 29

DV