Unit 1 – Lecture 1
What is Science?Discuss with a partner next to you what you
think “science” is really all about.
What is Science?
Biologythe study of life“bio” = life“ology” = the
study ofThere are many branches of Biology including anatomy/physiology, ecology, zoology, genetics, paleontology, marine biology…[and many more!]
So…if Biology is the study of life…what is “life”?
Affixes & Root WordsItems like those on the previous slide[bio &
ology] are called affixes. Sample affixes are common prefix & suffix terms.
Root words are terms from other languages such as Latin or Greek such as “logos” meaning knowledge – hence, the study of, or the gaining of knowledge…
We will use those A LOT.
DiscussLook back at [or recall] the list of
characteristics you made earlier in the warm-up.
Discuss these characteristics of life with your partner.
What is “life”? – Characteristics
All living things… are made of one or more cellsneed energy
pass genetic traits on to offspring [heredity]grow & develop
reproduce
This list is a simplification of what could be a much longer list, however, even some of these requirements could be combined – and some can be expanded.
What is “life”? – CharacteristicsAll living things… [cont’d]
maintain homeostasis
The term Organism is given to anything which contains ALL of these characteristics.
respond to stimuli• examples: pupil becoming smaller when
light in shined into eyes, salivating when chewing food, etc.
Homeostasisthe process of maintaining constant internal conditions
“homeo” (“homo”) – the same“stasis” – to stay / to stand / not changing
• examples: temperature regulation, enzyme secretion to digest food, sleep/wake cycle…etc.
metabolism – the sum of all the body’s chemical reactions
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