Biology

Question 0

Name the 7 themes of biology.

Answer 0

1. New properties emerge at each level in the biological hierarchy.
2. Organisms interact with other organisms and the physical environment.
3. Life requires energy transfer and transformation.
4. Structure and function are correlated at all levels of biological organization.
5. The cell is an organism’s basic unit of structure and function.
6. The continuity of life is based on heritable information in the form of DNA.
7. Feedback mechanisms regulate biological systems.

Question 1

Names 7 of the properties of life.

Answer 1

1. All living this respond to their environment.
2. All living things reproduce.
3. All living things go through stages of growth and development.
4. All living must process energy
5. All living things regulate themselves.
6. All living things exhibit a level of organization/ order.
7. All living things develop evolutionary adaptations.

Question 2

What are emergent properties?

Answer 2

New properties of life or function emerge at each new level of the biological hierarchy.

Ex: the intestinal cells show new properties when grouped together to form intestinal tissue.
The sum is greater than its total parts.

Question 3

Name the 8 different taxonomic categories from most inclusive to most specific.

Answer 3

Domain, Kingdom, Phylum, Class, Order, Family, Genus, Species.

Question 4

What are the 3 main premises of Cell Theory?

Answer 4

1. All living organisms are composed of one or more cells.
2. The cell is the basic unit of structure, function and organization in all organisms.
3. All cells come from pre-existing, living cells.

Question 5

What is the most basic unit of all life?

Answer 5

The cell.

Question 6

What distinguishes prokaryotic cells from eukaryotic cells?

Answer 6

Prokaryotic cells lack a membrane enclosed nucleus while eukaryotic cell have a membrane enclosed nucleus.

Question 7

What for elements make up 96% of all living matter?

Answer 7

Oxygen, carbon, hydrogen, and nitrogen.

Question 8

What to subatomic particles are almost identical in mass?

Answer 8

Protons and neutrons.

Question 9

What unit of measurement is used to measure the mass of subatomic particles?

Answer 9

The Dalton.

Question 10

All atoms of a particular element have the same number of what in their atomic nuclei?

Answer 10

Protons

Question 11

The atomic number of a particular element provides what type of information about the subatomic composition?

Answer 11

Atomic number provides information about how many protons are in the atomic nuclei.

Question 12

The atomic number of an element can provide what type of information regarding the elements subatomic particle make up?

Answer 12

The number of neutrons.

This is found by subtracting the atomic number from the atomic mass.

Question 13

What is an isotope?

Answer 13

Isotopes occur when the atoms of an element contain more neutrons which give it a greater mass.

Question 14

Where do electrons have the most energy?

Answer 14

Electrons have more energy the further away they are from the nucleus.

Question 15

What happens to an electron when it loses energy?

Answer 15

It falls back into a lower electron shell and gives off heat which is lost to the environment.