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Flashcards in Chapter4 Deck (34)
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0
Q

What. Is the smallest level of organization ?

A

A cell.

1
Q

What is a cell membrane?

A

An external boundary around a cell

2
Q

What is an organism?

A

A complete living thing

3
Q

What is a life span?

A

The process of birth,life,& death

4
Q

What is an environment ?

A

The surroundings or conditions in which a person,animal or plant operates

5
Q

What is energy?

A

The ability to work.

6
Q

What r tissues ?

A

A group of cells working together

7
Q

What is a cell

A

The smallest unit of a living organism
Building block of all organisms
Filled with organells & contains DNA

8
Q

What is the cell theory

A

A theory stating that all living things are made of cells and that the cell is the smallest form of life also that cells come from cells

9
Q

What is the definition of unicellular ?

A

A term used describing an organism consisting of one cell

10
Q

What is multicellular ?

A

A term used to describe an organism consisting of more than one cell

11
Q

What is an organ?

A

To or more tissues that work together to perform a specific function

12
Q

What is a system?

A

A group of organisms working together

13
Q

What r the characteristics of life?

A
Living things are made of cells 
Grow& reproduce 
Respond after their own kind
Respond to stimulus in environment 
Use energy
14
Q

The organization of organisms:

A
  • smallest level is a cell
    Then tissues
    Then organs
    Then systems
15
Q

What are cells made of?

A

Organelles which perform jobs

16
Q

What is a cell like?

A

A city

17
Q

What is a cell membrane?

A

An external boundary
Made of lipid and protein
Controls what goes in and out of the cell

18
Q

What is a cytoplasm?

A

A jelly like substance
Madeout. Of water,glucose,fat and other substances
Fills and surrounds organells

19
Q

Nucleus

A

The largest organelle
Like a control center
Contains all DNA
Has a nucleus membrane

20
Q

Nuclear pore

A

Protein in the nuclear membrane

Allows some things to enter the cell

21
Q

Chromosome

A

Tiny bundle of DNA

22
Q

Mitochondria

A

Produces and releases energy

The energy is glucose

23
Q

Endoplasm Reticulum

A

System of passage ways
Allow materials to go from one part of a cell to the next
There are two types of ER-rough and smooth

24
Q

What is the rough er?

A

An organelle called ribosomes attached to it

25
Q

What does rough re and soft er have

A

Smooth er has no ribosomes

Rough er will be found attached to the nucleus

26
Q

Vacuole

A

Storage center for food water and waste

27
Q

Lysosomes

A

Helps fight pathogens

Helps digest and recycle old cell parts and food

28
Q

Cytoskeleton

A

Gives the cell support

Made of micro tubes which are hollow protein tubes

29
Q

Chloroplasts

A

Produces sugar

30
Q

Cell wall

A

Extra membrane
Found outside the cell membrane
A rigid support system
The largest organelle in the plant is a vacuole

31
Q

Golgi apparatus

A

Creates and packages materials to be shipped out side the cell
Secretory vesicles are “shipped”

32
Q

Cillia

A

Helps the cell move

Tiny hair

33
Q

Flagellum

A

Whips back and forth&helps the cell move

A hair like structure