Biology: Study Of Life

Question 1

When was the Big Bang Theory

Answer 1

~13.7 billion years ago

Question 2

How did starts and planets formed?

Answer 2

Matter clumped together because of gravitational forces. As they collided nuclear fusion occur which eventually made stars and plants

Question 3

How old is our Earth and solar system

Answer 3

~4.6 billion years old

Question 4

How old are the oldest rocks

Answer 4

~4 billion years old

Question 5

In the early Earth which elements were abundant. Give percents.

Answer 5

Nitrogen: 78%
Oxygen: 21%
Carbon Dioxide: 0.04%

Question 6

When did the first life appear and what were they?

Answer 6

~3.5 billion years ago, they were small and single celled

Question 7

How long ago living things had altered the atmosphere and water of the earth.

Answer 7

2 billion years ago

Question 8

When did larger more complex cells (Eukaryotes) appeared

Answer 8

~ 2 billlion years ago

Question 9

When did the first animals appear

Answer 9

~600 million years ago

Question 10

When did the first plants and fungi appear?

Answer 10

~500 million years ago

Question 11

What kinds of evidence convinces you something is true or works?

Answer 11

Anecdotes (incorrect)
Marketing (advertisements, endorsement, expert opinion) (incorrect)
Price (incorrect)
Traditional knowledge (somewhat)
Experimentally tested (CORRECT)

Question 12

What is science?

Answer 12

A type of method of explaining how things operate

Question 13

What is accepted to be science

Answer 13

• follows testable evidence
• evidence influence theories

Question 14

What is the first scientific method?

Answer 14

Organization of thought

Question 15

What are the 3 steps in Organization of thought.

Answer 15

A. Making observation
B. Asking a question
C. Coming up with hypothesis that could answer the question

Question 16

What is the most important criteria of a hypothesis

Answer 16

The hypothesis should make a specific testable prediction

Question 17

What is the 2nd scientific method?

Answer 17

Hypothesis testing

Question 18

What occurs in the hypothesis testing?

Answer 18

• Testing if the predictions that the hypothesis are correct
• Design experiment to try to disapprove the hypothesis

Question 19

Why is it better to disapprove a hypothesis than to approve

Answer 19

• Easier to prove something is wrong because there are unlimited amount of hypothesis possible

Question 20

What is the difference between null hypothesis and alternative hypothesis?

Answer 20

Null hypothesis is when the subject is the same before and after the experiment
Alternative is when the subject is not the same before and after experiment.