CH.1-Characteristics life/bio organization

Question 1

Characteristics of living organisms (7)

Answer 1

1) Organized structure made of organic molecules
2) Made of 1 or + cells
3) Grow, develop, reproduce
4) Energy to survive
5) Respond to stimuli
6) Maintain homeostasis
7) Evolve over generations

Question 2

At every —- of a —— organism, we find that the structure is organized in a particular way. Not random

Answer 2

Level - living

Question 3

Name 3 organic structures

Answer 3

1) Bone tissue
2) Cross section of cell
3) Digestive system

Question 4

What are the building blocks of living organisms (molecules of life)?

Answer 4

Organic molecules

Question 5

What makes a molecule organic?

Answer 5

Presence of carbon atoms

Question 6

4 main groups of organic molecules

Answer 6

1) Carbohydrates (starch)
2) Proteins (muscle)
3) Lipids (fatty tissue)
4) Nucleic acids (DNA)

Question 7

What’s an organism with one cell called?

Answer 7

Unicellular

Question 8

What’s an organism with multiple cells called?

Answer 8

Unicellular

Question 9

Are protists unicellular or multicellular?

Answer 9

Unicellular

Question 10

When an organism grows, it in cell — and cell —. The form —.

Answer 10

size - number - doesn’t change

Question 11

When an organism develops, it —-

Answer 11

Changes in form (transformation)

Question 12

Living organisms don’t come from previous life form. True or false?

Answer 12

False - All living organisms come from already existing organisms (parents)

Question 13

What are the 2 types of reproduction?

Answer 13

Asexual + Sexual

Question 14

Why is energy taken in by living organisms?

Answer 14

To fuel metabolic reactions. Energy is for chemical reactions.

Question 15

What is metabolism?

Answer 15

Sum of all chemical reactions in living cells. How we take E and transform it.

Question 16

What functions does energy help perform?

Answer 16

1) Grow, develop reproduce
2) Respond to stimuli
3) Repair damage
4) Maintain cte internal env

Question 17

How do we respond to stimuli?

Answer 17

With physical/chemical changes in our internal/external environments

Question 18

What’s an example of an internal stimulus?

Answer 18

Kidneys to maintain blood pH

Question 19

What’s an example of external stimulus?

Answer 19

Plants grow towards light

Question 20

What is it called when there’s a stable internal environment maintained?

Answer 20

Homeostasis

Question 21

What’s an example of homeostasis?

Answer 21

Humans maintain fluid levels, body temp

Question 22

What do liv organisms have that are passed on from 1 gen to the next

Answer 22

Genetic traits

Question 23

How do genetic traits help?

Answer 23

Survive better in environment

Question 24

What is an adaptation?

Answer 24

Trait that allows to survive better that becomes more prevalent over time.

Question 25

What are the different levels of organization withing living organisms?

Answer 25

1) Atoms/molecules 2) Organelles 3) Cells 4) Tissues 5) Organs 6) Organ systems 7) Multicellular organism 8) Population 9) Community 10) Ecosystem 11) Biosphere

Question 26

What's an organelle?

Answer 26

Distinct structures in cells that have specialized function

Question 27

What are organelles made of?

Answer 27

Molecules

Question 28

Examples of organelles and their functions?

Answer 28

Nucleus (houses DNA - genetic info to build all structures) Mitochondrion (provides E to cell by cellular respiration)

Question 29

What is the smallest level of organization that is alive? (Smallest unit of life)

Answer 29

Cells

Question 30

What are cells made of?

Answer 30

Organelles and molecules

Question 31

In a multicellular organisms there are many types of cells, but for the most part, do they all contain the same components?

Answer 31

Yes

Question 32

What levels in a living organism cannot sustain life?

Answer 32

Atoms, molecules, organelles

Question 33

Characteristics of all cells

Answer 33

1) Surrounded by membrane 2) Have internal mass (cytoplasm) 3) Contain genetic material DNA 4) Have ribosomes (to make proteins)

Question 34

What are the 2 major types of cells?

Answer 34

Eukaryotic cell types Prokaryotic cell type

Question 35

Can a living organism have both eukaryotic and prokaryotic cells?

Answer 35

No, one or the other

Question 36

Eukaryotic cells are ---- and more ---- Eukaryotic organism are animals, ----, fungi, ---

Answer 36

Larger - complex plants - protists

Question 37

Prokaryotic cells are --- and less --- Prokaryotic organisms are ---- and ---

Answer 37

smaller - complex bacteria - archaea

Question 38

Prokaryotic cells: Is DNA enclosed in membrane? What shape is DNA molecule?

Answer 38

DNA is NOT enclosed in its membrane. DNA is circular.

Question 39

Which cell lacks membrane bound organelles?

Answer 39

Prokaryotic cells

Question 40

Do prokaryotic cells have ribosomes?

Answer 40

Yes

Question 41

Which cell has cytoplasm that fills ENTIRE cell?

Answer 41

prokaryotic

Question 42

Eukaryotic cells: Is DNA enclosed in membrane? What shape is DNA molecule?

Answer 42

Yes, DNA is enclosed in membrane and called the nucleus. DNA is linear and coiled

Question 42

Which cell contains many membrane bound organelles?

Answer 42

Eukaryotic

Question 43

Which cell has cytoplasm that fills MOST of the cell? Which part does it not fill?

Answer 43

Eukaryotic, doesn't fill the nucleus

Question 44

Where is DNA located in prokaryotic cells?

Answer 44

Cytoplasm

Question 45

Where is DNA location in eukaryotic cells?

Answer 45

Nucleus

Question 46

Do prokaryotic cells have many internal membranes?

Answer 46

No

Question 47

Do eukaryotic cells have many internal membranes?

Answer 47

Yes

Question 48

Which cell type has a cytoskeleton?

Answer 48

Both prokaryotic and eukaryotic

Question 49

What are tissues?

Answer 49

Group of similar cells that share specific function (bone, muscle, blood)

Question 50

What are organs?

Answer 50

Structures made of different types of tissues that work together to perform the same function (stomach = digestion)

Question 51

What are organ systems?

Answer 51

Organs that work together for a shared purpose within organism

Question 52

Examples of organ systems?

Answer 52

Digestive system, nervous system, respiratory system

Question 53

What are multicellular organisms?

Answer 53

Independent living unit composed of molecules, organelles, cells, tissues, organs, organ systems

Question 54

What is a population?

Answer 54

Group of individuals of same species living in same area (unicellular or multicellular)

Question 55

What is a community?

Answer 55

All populations of every species in same area

Question 56

What is an ecosystem?

Answer 56

All living organisms in given area (biotic component).

Question 57

In ecosystem, what is an abiotic component?

Answer 57

Physical environment the biotic component interacts with

Question 58

What is a biosphere?

Answer 58

Entire portion of Earth inhabited by living organisms