Exam 1

Question 1

List the characteristics of living organisms

Answer 1

Order, response to stimuli, reproduction, adaptation, growth & development, homeostasis, metabolism

Question 2

What has some characteristics of living organisms?

Answer 2

Virus: no homeostasis, don’t respond to stimuli, no growth

Question 3

What is evolution

Answer 3

A change in organisms over generations

Question 4

What category in the tree of life, do most living things fall under?

Answer 4

Eukaryotic

Question 5

What category has more living things?

Answer 5

Bacteria

Question 6

Which has more complexity?

Answer 6

This is based on the bio. Hierarchies of organization. The higher on the hierarchy, the more complexity

Question 7

Fact

Answer 7

Simple observation known to be true

Question 8

Hypothesis

Answer 8

Possible, testable explanation

Question 9

Law

Answer 9

Statement of what ALWAYS occurs about a natural phenomenon

Question 10

Theory

Answer 10

Explanation of natural occurrence that has undergone rigorous scientific testing and has not been shown to be untrue

Question 11

Theory vs Law

Answer 11

Scientific theories don’t graduate into laws
Theory is the why, law is the description of what occurs

Question 12

Basic research vs Applied research
Purpose

Answer 12

Basic: understand the universe and make predictions

Applied: solves specific real world problems

Question 13

Basic research vs Applied research
Nature

Answer 13

Theoretical vs practical

Question 14

Basic research vs Applied research
Economics

Answer 14

No economic pursuits vs commercially driven

Question 15

Basic research vs Applied research
Goal

Answer 15

Understand the universe vs development of technology and solutions

Question 16

Electrons orbit the nucleus and interact with electrons from other atoms to form what

Answer 16

Chemical bonds

Question 17

Atomic number is the # of

Answer 17

Protons as well as the electrons if it is neutral

Question 18

Atomic mass is the # of

Answer 18

Protons and neutrons

Question 19

What has a different number of protons and electrons, has electrical charge

Answer 19

Ion

Question 20

How many electrons does B -1 have? Atomic number is 5

Answer 20

6 electrons. 5e + 1e

Question 21

How many neutrons does the isotope Boron -12 have?

Answer 21

7 neutrons. I’d the atomic number is 12, and there are 5 protons.

Question 22

Multiple atoms bonded together

Answer 22

Molecule

H2

Question 23

Multiple atoms of different elements bonded together

Answer 23

Compound
CO2

Question 24

Ionic bond

Answer 24

Gain/loss electron of metal and a non metal

Question 25

Covalent bond

Answer 25

Electron sharing between non metals. Polar and non polar. Stronger than H bonds

Question 26

Humans are made up of how much water

Answer 26

60%

Question 27

Is water polar or non polar

Answer 27

Polar

Question 28

Extensive hydrogen bonding means water can absorb a lot of heat before changing state making excellent for cooling and metabolic reactions

Answer 28

Thermal property

Question 29

Di polarity means water will stick to other water molecules resulting in high water tension

Answer 29

Cohesive

Question 30

Dipolarity means water will stick to charged or polar surfaces resulting in water to move via capillary action

Answer 30

Adhesive

Question 31

Water can dissolve polar or charred molecules making it a good transport medium

Answer 31

Solvent

Question 32

Less dense as a solid than a liquid

Answer 32

Density

Question 33

Water is transparent to visible spectrum making it useful for photosynthesis

Answer 33

Transparency

Question 34

Interacts and bonds with water polar or charged

Answer 34

Hydrophilic

Question 35

How does water stabilize temperature

Answer 35

More water in an environment means the less temps fluctuate because water heats up slower than earth

Question 36

Which of the three is the weakest of chemical bonds (ionic, covalent, hydrogen)?

Answer 36

Hydrogen

Question 37

What is the difference between polar and nonpolar covalent bonds?

Answer 37

Polar covalent bonds: one side is pulling more due to unequal electron sharing Non polar covalent: equal pull due to equal electron sharing

Question 38

Put the following in order from most dense to least dense (ice, liquid water, water vapor).

Answer 38

Liquid water, ice, water vapor

Question 39

What are the 4 classes of bio molecules

Answer 39

Carbs (monosaccharides), nucleic acids (nucleotides), proteins (amino acids), lipids (glycerol and fatty acids)

Question 40

Small subunit molecules that build polymers

Answer 40

Monomers

Question 41

What are the monomers and polymers for carbohydrates

Answer 41

Monosaccharides and polysaccharides

Question 42

What is a monomer and polymer for nucleic acids

Answer 42

Nucleotide and dna

Question 43

What is a monomer and polymer for proteins

Answer 43

Amino acid and polypeptides

Question 44

What is a monomer and polymer for lipids

Answer 44

Fatty acid and triglyceride

Question 45

Glucose, fructose and galactose are common

Answer 45

Monosaccharides

Question 46

Sucrose, maltose, and lactose are common

Answer 46

Dissaccharides

Question 47

Starch, glycogen, cellulose, and chitin are common

Answer 47

Polysaccharides