Mod 4

Question 1

Cell

Answer 1

Cell: the basic unit of structure and function in living organisms

Question 2

Compound

Answer 2

Compound: a molecule consisting of atoms of two or more different elements

Question 3

Element

Answer 3

Element: a substance that cannot be broken down into simpler substances; each element is classified by its atomic number

Question 4

Molecule

Answer 4

Molecule: two or more atoms bonded together

Question 5

Multicellular

Answer 5

Multicellular: a living organism made of more than one cell

Question 6

Organ

Answer 6

Organ: part of an organism, made of cells and different tissues, which performs a larger function

Question 7

Organism

Answer 7

Organism: an individual form of life, such as an animal, plant, or single-celled life form

Question 8

Organ system

Answer 8

Organ system: a group of organs that work together and perform one or more major functions

Question 9

Tissue

Answer 9

Tissue: group of specialized cells that work together to perform a specific function

Question 10

Unicellular

Answer 10

Unicellular: a living organism made of one cell

Question 11

What are the smallest particles of matter?

Answer 11

Atoms

Question 12

What are the 6 major elements found in the human body?

Answer 12

Carbon, hydrogen, nitrogen, oxygen, phosphorous, and sulfur

Question 13

Which is an example of a molecule? (4 points)

a. Muscle tissue
b. Protein
c. Stomach
d. Unicellular organism

Answer 13

b. Protein

Question 14

Put the individual level of organization to its correct spot, starting with the most simple and ending with the most complex.

1) tissues
2) organs
3) organ systems
4) molecules
5) cells
6) atom
• 1st
• 2nd

Answer 14

• 1st atom
• 2nd molecules
• 3rd cell
• 4th tissues
• 5th organs
• 6th Organ systems

Question 15

An atom is the most __________ unit of living and nonliving things. (4 points)

a. basic
b. complex
c. interesting
d. sizeable

Answer 15

a. basic

Question 16

Nonliving things have cells. (4 points)

True
False

Answer 16

False

Question 17

Scientific theory

Answer 17

Scientific theory: well-supported and widely accepted explanation of the way nature works based on observation and experimentation

Question 18

Replicable

Answer 18

Replicable: able to be repeated

Question 19

Microscope

Answer 19

Microscope: an instrument that makes small objects look larger

Question 20

Hypothesis

Answer 20

Hypothesis: something not proved but assumed to be true for purposes of further study or investigation

Question 21

Cell theory

Answer 21

Cell theory: a widely accepted explanation of the relationship between cells and living things

Question 22

A scientific theory never changes

True or False

Answer 22

False

Question 23

Which of the following is an example of a scientific theory?

Predicting a surprise party
Big bang
Universal law of gravitation

Answer 23

Big bang

Question 24

What is the difference between theory and hypothesis?

Answer 24

A hypothesis is a suggested explanation that must still be tested, a theory is a general explantion based on a lot of evidence and testing

Question 25

What is the difference between theory and law?

Answer 25

A law is a statemnt about how things work but does not explain why. It can not change

A theory tries to explain how or why something happens and can be changed with new evidence

Question 26

What are the three parts to Cell Theory

Answer 26

1. All living organisms are composed of one or more cells.
2. The cell is the basic unit of structure and function in living organisms
3. All cells come from preexisting cells..

Question 27

Who invented the Compound Microscope?

Answer 27

Zacharias Janssen

Question 28

Who were the two scientists who discovered the first 2 parts of cell theory?

Answer 28

Matthias Schleidan and Theodor Schwann

Question 29

Who was the third scientist to agree witht he 3rd part to cell theory?

Answer 29

Rudolf Virchow (“borrowed” his work from Robert Remak)

Question 30

Cytoplasm

Answer 30

Cytoplasm: the thick, watery, clear, gel-like fluid within a living cell, excluding the nucleus

Question 31

Eukaryote

Answer 31

Eukaryote: cell that has a nucleus

Question 32

Mitochondria

Answer 32

Mitochondria: rod-shaped structures where cellular respiration takes place inside living cells

Question 33

Nucleus

Answer 33

Nucleus: a large oval structure that directs all of the cell’s activities; only found in eukaryotes

Question 34

Organelle

Answer 34

Organelle: any organized or specialized structure within a living cell

Question 35

Prokaryote

Answer 35

Prokaryote: cell that does not have a nucleus

Question 36

Vacuole

Answer 36

Vacuole: water-filled sacs inside a living cell that store food, water, nutrients, and waste

Question 37

Chloroplasts

Answer 37

Chloroplasts: green structures inside plant cells where photosynthesis takes place

Question 38

Cell wall

Answer 38

Cell wall: a rigid layer that surrounds the cell membrane of plant cells

Question 39

Cell membrane

Answer 39

Cell membrane: the membrane surrounding a cell that allows substances to pass in and out

Question 40

Q: What are the three main differences between plant and animal cells?

Answer 40

A: Plant cells have cell walls for extra support. They have chloroplasts for photosynthesis. And they have larger vacuoles to store water.

Question 41

Animal Cells have cell wall

True or false?

Answer 41

False

Question 42

Only plant cells have Chloroplasts

True or False

Answer 42

True