Midterm Crap

Question 1

What are the 6 characteristics of life?

Answer 1

1. Reproduction
2. Responsive to environment
3. Grow and develop
4. Use of energy
5. Has organization
6. Maintains homeostasis

Question 2

What are the 6 steps of the scientific method?

Answer 2

1. Ask question
2. Make hypothesis
3. Experiment
4. Analyze
5. Report conclusions
6. Use conclusions to make a new hypothesis

Question 3

Define Theory

Answer 3

Statement backed by strong consensus from scientific community based on broad range of evidence

Question 4

Define Law

Answer 4

Very precise universal statements describing what always happens in physical world

Question 5

Who proved the existence of atoms?

Answer 5

Einstein

Question 6

How was the Brownian Motion discovered?

Answer 6

Robert Brown was looking at pollen grains through a microscope and had started to notice it jiggle caused by molecules (atoms)

Question 7

How’s a proton charged

Answer 7

Positively

Question 8

How’s a neutron charged

Answer 8

Neutrally

Question 9

How’s an electron charged

Answer 9

Negatively

Question 10

What determines what type an element an element is?

Answer 10

The amount of protons that are in it

Question 11

How do you find the Atomic weight

Answer 11

You add the protons and neutrons

Question 12

How do you find Mass Number

Question 13

How do you find Atomic Number

Answer 13

Look for the number of protons

Question 14

Define Cell

Answer 14

The smallest unit of life responsible for all of life’s processes

Question 15

Define Homeostasis

Answer 15

When an organism maintains and regulates its own inner conditions suitable for its survival

Question 16

Define Metabolism

Answer 16

All of the chemical reactions occurring within an organism

Question 17

What’s the difference between Asexual reproduction and Sexual reproduction

Answer 17

A: Parent produces identical offspring’s
S: Parent produces genetically different offspring’s

Question 18

Define what the scientific method is

Answer 18

A procedure scientists use to gather info. and answer questions

Question 19

What’s the difference between a Control group and a Experimental group?

Answer 19

CG: The group that doesn’t change, but is used to compare the results of the experimental group with
EG: The group that does change and receives the experimental treatment

Question 20

What’s the difference between an Independent variable and the dependent variable

Answer 20

I: The condition that the experimenter switches them selves and is then tested
D: The result or outcome from that changed variable

Question 21

Why is it important that only one variable be changed in an experiment?

Answer 21

So you know which of the factors affected your experimental group

Question 22

Define and give an example of Molecules

Answer 22

Group of atoms held together by covalent bonds (H2O)

Question 23

Define and give an example of Cells

Answer 23

The basic unit of living organisms (Skin Cells)

Question 24

Define and give an example of Tissue

Answer 24

Group of cells that work together as one unit (Muscular Tissue)

Question 25

Define and give an example of Organism

Answer 25

Anything that possesses all the characteristics of life (Human)

Question 26

Define and give an example of Population

Answer 26

A group of organisms of same species that interbreed and live in the same place (Zebras)

Question 27

Define and give an example of Community

Answer 27

Collection of several interacting populations that inhabit a common environment (Coral Reefs)

Question 28

Define and give an example of Ecosystem

Answer 28

Interactions between populations in a community (Forests)

Question 29

Define and give an example of Biosphere

Answer 29

A portion of Earth that supports life

Question 30

What's the difference between a transmission electron microscope and a scanning electron microscope?

Answer 30

T: Shows/scans the inside of a cell S: Scans surface of cell

Question 31

Describe/Order biological life from simple to complex levels

Answer 31

1. Atomic 2. Molecular 3. Cellular 4. Tissue 5. Organ 6. Organism 7. Population 8. Community 9. Ecosystem 10. Biosphere

Question 32

Explain the 3 parts of Cell Theory

Answer 32

1. All cells come from pre-existing cells 2. Cells are the basic unit of all living organisms 3. All cells are made up of pre-existing cells

Question 33

Define natural selection

Answer 33

Certain traits allow for an individual to be better suited to its environment and can pass its genes on to future generations

Question 34

Define natural fitness

Answer 34

An organisms ability to use their adaptions to survive in the wild

Question 35

Define heredity

Answer 35

passing of genes

Question 36

Define evolution

Answer 36

gradual changes in a species over time through adaptations

Question 37

Define atom

Answer 37

The smallest part of an element that still retains properties of that element

Question 38

Define element

Answer 38

A pure substance that consists entirely of one atom

Question 39

Define solution

Answer 39

The chemical combination of two or more elements in a definite ratio

Question 40

Define ionic bond

Answer 40

A bond formed between elements when electrons are transferred from one atom to another

Question 40

Define covalent bonds

Answer 40

A bond formed when

Question 41

Define suspension

Answer 41

A combination of two or more substances that are not chemically combined

Question 41

What are the subatomic particles and where are each located

Answer 41

Protons (center/nucleus) Neutrons (center/nucleus) Electron (outside ring)

Question 42

Define matter

Answer 42

Anything that occupies space and has mass

Question 43

How do you find the number of protons

Answer 43

find the atomic number

Question 43

How do you find the number of electrons

Answer 43

find the atomic number

Question 43

How do you find the number of neutrons

Answer 43

you subtract the mass number by the atomic number

Question 44

What is true about elements that are isotopes

Answer 44

They have the same amount of protons and electrons, but a different number of neutrons

Question 44

Give an example of an element, compound, and mixture

Answer 44

E: Iron C: Water M: Kool aid or coffee

Question 44

What is a hydrogen bond

Answer 44

the attraction between hydrogen atoms and the lone pairs of either Nitrogen, Oxygen, or Fluorine

Question 45

Distinguish between cohesion and adhesion

Answer 45

C: Attraction between two molecules of the same substance A: Attraction between molecules of two different substances

Question 45

Proteins must always have what elements

Answer 45

C arbon H ydrogen O xygen N itrogen S ulfur

Question 46

What are the monomers of proteins

Answer 46

Amino acids

Question 46

How many amino acids are there

Answer 46

20

Question 46

List the four parts of an amino acid

Answer 46

Primary structure Secondary structure Tertiary structure Quaternary structure

Question 47

what hold amino acids together when they are in a protein

Answer 47

peptide bonds

Question 47

What elements are found in nucleic acids

Answer 47

C arbon H ydrogen O xygen N itrogen N ucleotides

Question 47

What are the monomers of the nucleic acids

Answer 47

nucleotides

Question 48

Name two kids of nucleic acids

Answer 48

DNA and RNA

Question 48

What is the function of nucleic acids

Answer 48

Storing cellular info. in the form of a code

Question 49

What are the three elements in carbohydrates, in what ratio

Answer 49

C arbon (1) H ydrogen (2) O xygen (1)

Question 49

What is the main role of the carbohydrate glucose in a living cell

Answer 49

mixing with starch to make an energy storage for plants and seeds/bulbs