Levels of Organization

Question 1

Atoms

Answer 1

The smallest non-living units of matter.

Question 2

Molecule

Answer 2

Two or more atoms that are chemically bonded together.

Question 3

Organelles

Answer 3

Means little organs. Specialized structures that perform various jobs inside cells.

Question 4

Cell

Answer 4

Smallest living unit of a living organism.

Question 5

Tissue

Answer 5

Similar cells work together to perform a specific function.

Question 6

Organ

Answer 6

Specialized structure made up of two or more tissues. Examples:- Stomach, heart

Question 7

Organ system

Answer 7

Set of organs that have a common goal or function.

Question 8

Organism

Answer 8

A combination of all working levels of organizations. Example: - Humans

Question 9

Name the 4 most common ELEMENTS in the human body.

Answer 9

1. Carbon
2. Hydrogen
3. Oxygen
4. Nitrogen

Question 10

Identify the five most common MOLECULES in humans and other living organisms.

Answer 10

1. Water
2. Carbohydrates
3. Proteins
4. Nucleic acids ( such as DNA and RNA)
5. Lipids

Question 11

Summarize the major levels of organization in living organisms starting with the smallest and least complex and working towards the largest and most complex

Answer 11

Chemical, cellular, tissue, organ, organ system, and organism.

Atoms, molecules, cells, tissues, organs, organ systems, and organisms

Question 12

Molecules interact to form _______ and _____

Answer 12

Organelles and cells

Question 13

What are some examples of organelles?

Answer 13

1. The nucleus
2. Mitochondria
3. Lysosomes
4. The endoplasmic reticulum (ER)
5. Golgi apparatus

Question 14

Organelles interact to form a ______

Answer 14

Cell

Question 15

Cells are made up of how many parts? name them.

Answer 15

3 parts
1. Plasma membrane
2. Cytoplasm
3. Nucleus

Question 16

Some living organisms such as bacteria are made up of one cell-they are________

Answer 16

Unicellular

Question 17

Organisms, such as humans and plants are made up of billions of cells- we are___

Answer 17

Multicellular

Question 18

Cells interact to form _______

Answer 18

Tissues

Question 19

The 4 major tissues in humans are

Answer 19

1. Epithelial tissue
2. Connective tissue
3. Muscle tissue
4. Nervous tissue

Question 20

Tissues interact to form _______

Answer 20

An organ.

Question 21

The human body consists of ______ major organ systems. Name them

Answer 21

11 major organ systems.

1. Integumentary system
2. Skeletal system
3. Muscular system
4. Nervous system
5. Endocrine system
6. Cardiovascular system
7. Lymphatic system
8. Respiratory system
9. Digestive system
10. Urinary system
11. Reproductive system

Question 22

_______ organs interact to form __________

Answer 22

A group of organs interact to form organ systems.

Question 23

True or false
All organ systems interact and are interdependent.

Answer 23

True.
For example, the respiratory system needs the cardiovascular system to carry oxygen from the lungs to the body’s cells.

Question 24

True or false
A dysfunction in one system can cause the other systems to malfunction as well.

Answer 24

True.

Question 25

Organ systems interact to form____

Answer 25

Organisms

Question 26

Name at least one major organ system in our bodies and its functions

Answer 26

Muscular system. Allows manipulation of the environment, locomotion, facial expression, maintains posture, and produces heat.