Cell Unit Test Review

Question 1

What are 3 statements that make up The Cell Theory?

Answer 1

• all living things are composed of cells
• cells are the basic unit of structure and function in living things
• all cells are produced by other cells

Question 2

Why do specialized cells share a division of labor & what types of organisms they are found in?

Answer 2

Special cells are found in multicellular organisms. A group of cells all do different things, in different parts of the body.

Question 3

5 levels of organization in the human body & definitions of each of the levels

Answer 3

1) cells- are organized into tissue
2) tissue- a group off similar cells that work together to performs specific function
3) organ- such as a brain is had of different kinds of tissue that function together
4) organ system- a group of organs that work together to perform a major function
5) organism- a group of organs, tissues and cells put together to make a living breathing thing

Question 4

What is the difference between an element and a compound?

Answer 4

Element- a whole complete substance that cannot be broken down to something else
Compound- when 2 or more elements combine chemically into something completely new

Question 5

What are functions of the 4 organic compounds found in cells?

Answer 5

• carbohydrates
• lipids
• proteins
• Nucleic acids

Question 6

What is difference between organic and inorganic compounds?

Answer 6

Organic- relating to, or derived from living matter.

Inorganic- not consisting of or deriving from living matter

Question 7

What is the difference between unicellular & multicellular organisms?

Answer 7

Unicellular- when a organism has only one cell
Example: amebia
Multicellular- when a organism has more then one cell
Example: humans

Question 8

Why was water important to cells?

Answer 8

Most chemical reactions in cells depend on substances that must be dissolved in water

Question 9

What is the differences between plant and animal cells?

Answer 9

• Plant cells have a cell wall animal cells didn’t
• plant cells have chloroplasts animal cells don’t
• animal cells have lysosomes and plant cells don’t

Question 10

Cell wall

Answer 10

Protects the cell on the outside

Question 11

Ribosomes

Answer 11

Makes protein

Question 12

Nucleus

Answer 12

The control center or brain of the cell

Question 13

Mitocondria

Answer 13

Converts energy stored in food to energize the cell

Question 14

What are all of the organelles that help move materials in a cell

Answer 14

Ribosomes and cytoplasm

Question 15

What are the characteristics of all living things?

Answer 15

• have cellular organization (made of one or more cells)
• contains chemicals of life including DNA
• grows and developes
• reproduce (sexually or asexually)
• responds to their surroundings
• uses energy

Question 16

What are the 4 things living things need?

Answer 16

• food
• water
• living space
• stable international condition

Question 17

What is the differences between autotrophs & heterotrophs?

Answer 17

Autotroph- an organism that is able to form nutritional organic substances from simple inorganic substances such as carbon dioxide
heterotroph- an organism deriving its nutritional requirements from complex organic substances.

Question 18

What is the difference between sexual and asexual?

Answer 18

Sexual- when 2 parent reproduce to create a offspring

Asexual- when 1 parent is involved and makes a identical copy of itself