Concept 1.1 and 1.2

Question 1

Properties of life

Answer 1

Order: Highly ordered structure that characterizes life
Energy processing
Evolutionary adaptation
Growth and development
Regulation
Response to the environment
Reproduction

Question 2

Levels of biological organization

Answer 2

Biosphere: Consists of all life on Earth
Ecosystems: Consists of all the living things in a particular area
Communities: Array of organisms inhabiting an ecosystem
Population: Consists of all the individuals of a species living within the bounds of a specified area
Organisms: Individual living things
Organs
Tissues
Cells
Organelles
molecules

Question 3

Eukaryotic cell vs prokaryotes

Answer 3

Contains membrane enclosed organelles vs lacking a nucleus and membrane enclosed organelles

Question 4

gene expression

Answer 4

The entire process of transcription + translation which leads to the manufacturing of a cellular product (protein)

Question 5

Genome

Answer 5

Genetic instructions that an organism inherits

Question 6

Energy flow and chemical cycling

Answer 6

There is a one-way flow of energy in an ecosystem: During photosynthesis, plants convert energy from sunlight to chemical energy (stored in food molecules such as sugars), which is used by plants and other organisms to do work and is eventually lost from the ecosystem as heat. In contrast, chemicals cycle between organisms and the physical environment

Question 7

feedback regulation

Answer 7

the output or product of a process regulates that very process. The most common form of regulation in living systems is negative feedback, a loop in which the response reduces the initial stimulus

Question 8

positive feedback

Answer 8

in which an end product speeds up its own production. The clotting of your blood in response to injury is an example. When a blood vessel is damaged, structures in the blood called platelets begin to aggregate at the site. Positive feedback occurs as chemicals released by the platelets attract more platelets.

Question 9

evolution

Answer 9

Concept that the organisms living on Earth today are the modified descendants of common ancestors.

Question 10

Three domains

Answer 10

Bacteria, Archaea, and Eukarya

Question 11

Bacteria and archaea are

Answer 11

prokaryotic

Question 12

Domain eukarya

Answer 12

All the eukaryotes (organisms with eukaryotic cells) are grouped in domain Eukarya. This domain includes four subgroups: kingdom Plantae, kingdom Fungi, kingdom Animalia, and the protists. The three kingdoms are distinguished partly by their modes of nutrition

Question 13

Natural selection

Answer 13

The natural environment consistently “selects” for the propagation of certain traits among naturally occurring variant traits in the population.