LEVELS OF ORGANIZAITON

Question 1

ATOM

Answer 1

Smallest unit of matter

Question 2

Molecule

Answer 2

Contain at least two atoms held together by chemical bonds.

Question 3

Macromolecule

Answer 3

Large molecules also known as polymers that are typically formed by combining smaller units called monomers. (Amino acids combine to form proteins, nucleotides combine to form nucleic acids such as DNA and RNA)

Question 4

Organelle

Answer 4

Structures inside cells (membrane bound organelles are only found in eukaryotic cells that contain a nucleus). - Examples include mitochondria, endoplasmic reticulum, golgi complex, lysosomes, chloroplasts (in plants), and others.

Question 5

Cells

Answer 5

1. Prokaryotic Cells - no nucleus or other membrane bound organelles, (bacteria and archaea)
2. Eukaryotic Cells - Have a nucleus and membrane bound organelles

Question 6

Tissues

Answer 6

Group of similar cells carrying out related functions.

1. Human body: epithelial, connective, muscular, nervous.

Question 7

Organs

Answer 7

Collection of related tissue.

Question 8

Organ System

Answer 8

Functionally related interacting organs.

Question 9

Organism

Answer 9

Individual living entity

Question 10

Population

Answer 10

All individuals or a species living within a specific area.

Question 11

Community

Answer 11

Populations inhabiting a particular area.

Question 12

ECOSYSTEM

Answer 12

All living things in a particular area together with the abiotic (nonliving) parts of the environment, also called biome and often named f or predominant plant life. ex: forest, desert, grassland.

Question 13

BIOSPHERE

Answer 13

All the ecosystems on Earth.