Important principles in biology

Question 1

what is a biological principle?

Answer 1

theories that are supported by a wide variety of evidence and are unlikely to be found untrue.

Question 2

define living.

Answer 2

can move, responds to stimuli, can grow, reproduce, contain materials and food from environment

Question 3

what is cell theory?

Answer 3

all organisms are made up of cells (and products of cells)
All cells come from preexisting cells
The cell is the smallest organisation unit

Question 4

what are common features of cells?

Answer 4

cell membrane
Cytoplasm
DNA and genetic material

Question 5

what is diversity?

Answer 5

their similarities and differences

Question 6

what is evolution?

Answer 6

the changing or organisms over Tim based on diversity, fossil records, geographic distribution, DNA and genetic code and sequencing and comparing DNA between species

Question 7

what are characteristics of organisms?

Answer 7

Movement
Reproduction
Sensitivity (respond to changes in environment)
Growth
Respiration (extracting energy)
Excretion
Nutrition
Are made of cells
Show changes and are often adaptive

Question 8

what are common requirements for life?

Answer 8

Energy
Nutrients and water to grow and repair
Certain environmental conditions
Release toxic wastes

Question 9

what are adaptations? what can cause them?

Answer 9

features that allow organisms to thrive in their environments. Adaption is due to natural selection- individuals with features most suited are more likely to survive to breed and pass down their desirable traits