Bio#1

What are the 7 characteristics of living organisms?

Movement

Respiration

Sensitivity

Reproduction

Growth

Excrement

Nutrient

Define movement.

Action by an organism or part of an organism causing a change of position or place

Define respiration. What is its equation formula?

Series of chemical reactions in cells that breaks down nutrient molecules to release energy for metabolism

Glucose + oxygen = carbon dioxide + water (+ energy - Adenosine Trophosphate - ATP)

What is the difference between aerobic respiration and anaerobic respiration?

Aerobic - with oxygen - when stored carbs run low, breaks down protein into amino acids to create energy

Anaerobic - without oxygen

Define sensitivity.

Ability of organisms to detect changes in internal and external environment and make appropriate responses

Define growth.

Permanent increase in dry mass due to increase in cell size or cell number or both

Become complicated and change shape

Define reproduction.

Ability to make new organisms of the same species as themselves

How do single-celled organisms reproduce differently from many-celled organisms?

Single-celled - binary fusion - keep dividing into two

Many-celled - reproduce sexually or asexually

Define excretion / egestion.

Removal of waste products from metabolism, toxic materials and substances in excess of requirements from organisms

Define nutrition. How is it different for plants and animals?

Intake of materials for growth, development and energy

Plants - thru light, carbon dioxide, water, ions - photosynthesis

Animals - thru organic compounds, water, ions - consuming other organisms

What are species?

Smallest natural group of organism - reproduce to produce fertile offsprings

What happens when animals of different species reproduce together?

Produce infertile offsprings (often of unnatural conditions)

What is binomial nomenclature?

Internationally agreed system of naming organisms - scientific name made of two parts, genus(1st word with capital letter) and species(2nd word with small letter)

State what the meaning of classification of organisms is. Then list them.

Method of scientific taxonomy used to group and categorize organisms into groups - easier to study them

Kingdom

Phylum

Class

Order

Family

Genus

Species