Biology - The Science of Life

Question 1

5 Characteristics of Life

Answer 1

1. Made of materials organized in a hierarchical pattern.
2. Use energy and raw materials to survive.
3. Respond to environment and maintain homeostasis.
4. Grow, develop, and reproduce.
5. Be part of a population that evolves.

Question 2

Cell

Answer 2

Smallest unit of life

Question 3

Matter

Answer 3

Any substance that has mass/takes up space

Question 4

2 Main categories of Matter

Answer 4

biotic - living things

abiotic - non living things (this includes water, proteins etc)

Question 5

What makes Viruses abiotic?

Answer 5

They lack the ability to reproduce on their own

Question 6

What makes bacteria single celled biotic organisms?

Answer 6

They have all the 5 characteristics of living things.

Question 7

Atom

Answer 7

Smallest unit of matter (not life)

Question 8

Molecule

Answer 8

Two or more atoms joined by chemical bonds

Question 9

Macromolecules

Answer 9

Biologically important molecules, when joined together they form a cell.

Question 10

Cells can be divided into two main categories

Answer 10

Prokaryotes: Small simple cells, no organelles
Eukaryotes: Contain organelles, more specialized

Question 11

Tissues

Answer 11

A collection of cells joined together to carry out a specific function

Question 12

Organs

Answer 12

Collections of tissues that carryout a function

Question 13

System (Organ system)

Answer 13

Collection of organs that carryout a function

Question 14

Organism

Answer 14

Collection of organ systems that carry out all necessary functions to sustain life

Question 15

Population

Answer 15

All the individuals (person, animal, or plant) living within a specific area

Question 16

Community

Answer 16

A collection of several populations living and interacting with eachother.

Question 17

Ecosystem

Answer 17

Collection of both living communities, and non living things that interact together. Ex. humans and climate

Question 18

Biomes

Answer 18

Parts of the earth where ecosystems are similar, ex. desserts, tundra, rain forest, etc.

Question 19

Biosphere - Highest level of living organization

Answer 19

All biomes on earth together, basically our planet

Question 20

Viruses can contain genetic info DNA/RNA but…

Answer 20

They STILL are not alive, they are abiotic

Question 21

How do viruses reproduce?

Answer 21

They infect living cells, hijack their organelles abilities to make new virus cells

Question 22

What are abiotic factors?

Answer 22

Non living parts of an ecosystem…ex climate, wind, etc

Question 23

What are biotic factors?

Answer 23

A living thing that affects its environment, ex algae, fish etc

Question 24

What is Science?

Answer 24

A process that helps us to understand how the natural world works

Question 25

What is a scientific experiment?

Answer 25

a carefully organized procedure in which the scientist intervenes in a system to change something then observes the result of the change.

Question 26

Hershey & Chase Experiment

Answer 26

Used viruses to determine what genetic material is, and what molecules control genetic info.

Question 27

What is Scientific Inquiry?

Answer 27

An approach to asking and answering questions and is the best approach to Science.

Question 28

The nucleus in an atom is made of….

Answer 28

Protons and neutrons