12 Major Concepts In Biology

Question 1

What is the reverence for life?

Answer 1

Caring for humans and all living things makes one happier.

Makes society better.

And makes the biosphere healthier and safer for all.

Question 2

Explain population and consumption.

Answer 2

Overpopulation and overconsumption harm the environment and society.

We need to reverse population growth, reduce wasteful and destructive kinds of consumption.

Question 3

What is replacement fertility?

Answer 3

To avoid overpopulation, practice replacement level fertility.

To increase and eventually level population: two parents, two surviving offspring

To reduce population: fewer than two offspring

Question 4

What are the 13 levels of organization?

Answer 4

Atoms 
Molecules 
Organelles 
Cells 
Tissues 
Organs 
Organ systems 
Organism 
Population 
Community 
Ecosystem 
Biome 
Biosphere

Question 5

Explain the energy for life.

Answer 5

Photosynthesis:
Sun + CO2 + H2O
Sun + Carbon dioxide + water 
Makes;
O2 + C6 H12 O6

Cellular Respiration:
O2 + C6 H12 O6
Makes;
CO2 + H2O + energy

Which is how;
Sun + CO2 + H2O makes CO2 + H20 + energy

Question 6

Explain the food chain and pyramid of energy.

Answer 6

Producers support consumers.

Each level has less biomass, every and amount of those animals than each level before it. The top of the pyramid has the least amount of biomass, energy and number of animals as opposed to the bottom level with the largest biomass, amount of energy and number.

Question 7

Explain reproduction, growth, differentiation.

Answer 7

> = arrow

Meiosis
2n > > 1n

Fertilization
1n + 1n > 2n
(Egg and sperm)

Mitosis
2n > 2n + 2n

Differentiation
2n > 2n

Question 8

Explain DNA > > traits

Answer 8

DNA codes for RNA

RNA codes for protein.

Proteins produces physical traits (tissues, organs, enzymes, hormones, neurotransmitters, antibodies).

DNA to RNA (transcription)
RNA to physical traits (translation)

Question 9

Explain the causes of behavior.

Answer 9

Genes produce nervous system and innate responses.

Organism learn from the environment.

Free will chooses among the learned behaviors.

Question 10

Explain natural selection.

Answer 10

Variation among individuals.

Survival of successful traits and thus survival of the fittest. Inheritance is successful traits establishes successful individuals in the population.

Nature selects for species adapted to their environment.

Question 11

Explain taxonomic levels.

Answer 11

Kingdom
Phylum 
Class
Oder 
Family 
Genus 
Species 

King, Philip, Came, Over, From, Germany, Singing

Each level is contained within the one above it.

Question 12

Explain homeostasis.

Answer 12

All conditions Must be maintained in a narrow range - temperature, oxygen, hydration etc.

Organisms detect conditions and restore homeostasis.