UNIT 1 REVIEW

Question 1

Levels of Organization

Answer 1

Atoms, Molecules, Cells, Tissues, Organs, Organ System, Organisms

Question 2

Prokaryote vs. Eukaryote Cells

Answer 2

Pro: Unicellular
Eu: Multicellular

Question 3

Autotroph vs. Heterotroph

Answer 3

Auto: Gets energy from sun; makes their own food

Heterotroph: gets energy from eating other organisms

Question 4

Domains

Answer 4

Highest level in the taxonomic hierarchy

Bacteria, Archaea, Eukarya

Question 5

Kingdoms

Answer 5

Protista (humans; most diverse, larger more complex cells)
Animalia, Fungi, Plantae

Question 6

Dependent and Independent Variables

Answer 6

Ind: What is manipulated
Dep: What is measured

Question 7

Theory vs. Hypothesis

Answer 7

Theory: explanation for natural phenomenons; supported by research

Hypothesis: based on observations; predictions

Question 8

Sexual vs. Asexual Reproduction

Answer 8

Sexual: offspring genetically different from parents; changing environments

Asexual: offspring are genetically identical to parent; unchanging environments

Question 9

Characteristics of life

Answer 9

life is organized

Organization, Energy Use, Maintenance of Internal Constancy, Homeostasis, Reproduction, grow, and development
Evolution

Question 10

Sample Size

Answer 10

Number of subjects in group

Question 11

Organic Elements

Answer 11

C: carbon
H: hydrogen
O: oxygen
N: nitrogen

makes carbs, proteins, nucleic, acids, lipids

Question 12

Ions

Answer 12

Charged atoms such as sulfate and hydroxide

Question 13

Atomic Weight vs. Atomic Number

Answer 13

Weight: average mass
Number: number of protons

Question 14

Chemical bond types

Answer 14

electron determine chemical bonds such as hydrogen and covalent bond

Question 15

Polar vs. Non-Polar

Answer 15

Polar: pair of electrons is unequally shared between two atoms

Non: two atoms share a pair of electrons with each other

Chemical bonds

Question 16

Isotopes

Answer 16

Different forms of the same element

Same atomic number, different atomic mass

Question 17

Valence shells

Answer 17

The outermost shell or orbital of an atom. Electrons in shells bond with other atoms

Question 18

Electrons

Answer 18

Surround the nucleus. Subatomic particles with a negative charge

Question 19

Stable Octet Rule

Answer 19

Used to predict bonding between atoms. Atoms are stable when they have eight electrons in their outer shell.

Question 20

Characteristics of Water

Answer 20

Hydrogen Bonds

Water is adhesive
Hydrophilic (dissolves in water; salt and sugar)

Question 21

pH

Answer 21

The amount of H+ in a solution

Question 22

Macromolecules

Answer 22

Molecule that contains a large number of atoms; proteins, nucleic acids

Question 23

Polymers & Monomer Types

Answer 23

Poly: Polypeptide
Monomer: amino acid

Question 24

Monomer vs. Polymers

Answer 24

Mono: bonds to identical molecules to form polymers

Polymers: molecules made up of small monomers

Question 25

Adhesion and Cohesion

Answer 25

Adhesion: H- bonds with other molecules Cohesion: water molecules stick to each other Allow water molecules to climb the roots to the leaves

Question 26

DNA vs. RNA

Answer 26

DNA: Double stranded, carries genetic information, Deoxyribose RNA: single stranded, carries out instructions found in DNA, ribose

Question 27

Saturated vs. Unsaturated

Answer 27

Sat: All C bonded to four other atoms, straight shape (solid at room temperature; butter) Unsat: at least one double bond with a bent shape (liquid at room temperature; vegetable oil