Biology - Ch. 1

Definition of nutrition

Definition of nutrition

organisms obtain food and material

Importance of nutrition

for energy, growth and maintaining health

Definition of respiration

Organisms break down food in their cells

Importance of respiration:

to release energy for body activities

Definition of movement

Organisms change in the position of their body parts

Importance of movement

To obtain benefits, e.g. escaping from dangers/finding food

Definition of growth

Organisms increase in size and complexity

Importance of growth

to obtain benefits and to have better survival, e.g. being strong to fight against the enemy

Definition of irritability

Organisms detect and react to the changes in the environment like stimuli

Importance of irritability

to obtain benefits, e.g. finding mates, escaping from danger

Definition of reproduction

organisms produce offspring

Importance of reproduction

to replace the loss and allow the species to continue through time/to prevent the species from extinction

Definition of excretion

Organisms remove metabolic waste produced by chemical reactions

Importance of excretion

to prevent the body from accumulating toxic substances

Fill: students should follow strictly the instructions given by the ______________.

teachers

Fill: Students should not enter the laboratory unless a _____________ is present.

teacher

Fill: Students should not ___________ anything from the laboratory without _____________.

remove, permission

Fill: students should not __________ around or __________ in the laboratory

rush, play

Fill: experiments underway should not be left ______________.

unattended

Fill: laboratory reagents and chemicals should be returned to the appropriate places immediately after use, with their_________ facing the front.

label

Fill: students should immediately report any ____________ and ____________ to their teacher.

accidents, breakages

Fill: students should not suck fingers of pencils in the laboratory since they maybe contaminated with _________ as well as _________ which may cause infectious diseases.

chemicals, germs

Fill: students should not ________ the skins of taxidermic _____________ or eat any plant materials used in experiment. poisonous substance are commonly added to the fur or feathers of animal specimens for _______________ purposes.

touch, specimen, preservative

What may be found on plant specimens?

poisonous fungicide

Fill: all microorganisms should be treated as potentially ____________ and be handled with caution. _________ of microorganisms for class inspection should be kept in _________ containers to prevent contamination and infection.

hazardous, cultures, sealed

what do you call a group of micro-organisms?

Culture

What are the 7 characteristics of living organisms?

nutrition, respiration, movement, growth, irritability, reproduction, excretion

What is the definition of biology?

It is the study of life