Science 6 test

Question 1

What happens in each phase of the cell cycle.

Answer 1

In Interphase the cell grows and develops chromosomes and dna are copied

In Prophase chromosomes are visible nduclear membrane disappears nucleolus disappears

In metaphase spindle ribers attach to chromosomes. Chromosomes line up across the equator or middle of the cell.

In anaphase chromosomes divide into two sets each half or set is puulled away to opposite sides if the cell

In telophase two nuclear membranes begin to form. cells begin to seperate.

In cytokinesis two cell divides cells daughter cell same number of separate

Question 2

What characteristics do all organisms have in common?

Answer 2

They need energy to carry out life processes, they are composed of one or more cells, respond to their enviroment, grow and reproduce, maintain a stable internal enviroment, and evolve or change over time.

Question 3

What are the three parts of the cell theory and how did it come to be?All living organisms are composed of one or more cells.

Answer 3

All living organisms are composed of one or more cells.

A cell is the basic structural and functional unit of living organisms

All cells arise from pre-existing cells.

They came to be based on a conclusion made by Schwann and Matthias Schleiden in 1838, after comparing their observations of plant and animal cells.

Question 4

Why is the process of osmosis important in cells?

Answer 4

It is important because that is how cells grow and expand and create more cells

Question 5

Why is homeostasis so important?

Answer 5

It is important because if you dont cool down or warm up when it is hot or cold you can die

Question 6

Describe the cell cycle AND two reasons why it is important.

Answer 6

The cell cycle has 6 phases which go interphase, prophase, metaphase, anaphase, telophase, and cytokinesis. This is the growing and reproducing of cells.

One imporant thing is if we did not have the cell cycle we would not grow.
The second imortant thing is that if we dont have it we would not be able to be strong and survive.

Question 7

What role to basic cell structures play: DNA, nucleus, cell membrane, cytoplasm

Answer 7

The cell membrane provides protection for the cells The nucleus is like the cells control center. The cytoplasm Holds the cells and protects them from damage. The DNA holds the information so that those things can change.

Question 8

Why do organisms respond to a stimulus? Provide examples.

Answer 8

They respond because they want to go to it or they want to go away from it. Example a plant that needs sunlight will go to the area where there is most of it.

Question 9

What is the difference between an acquired and an inherited trait?

Answer 9

An acquired trait is something that you worked for to have like being an athlete. An inherited trait is something that gets passed to you by genes like blue hair.

Question 10

Adaptation

Answer 10

a change or the process of change by which an organism or species becomes better suited to its environment.

Question 11

Cell

Answer 11

the smallest, basic unit of life that is responsible for all of life’s processes

Question 12

Mitosis

Answer 12

a process of cell duplication, in which one cell divides into two genetically identical daughter cells.

Question 13

Homeostasis

Answer 13

self-regulating process by which an organism tends to maintain stability while adjusting to conditions that are best for its survival

Question 14

Trait

Answer 14

a distinguishing quality or characteristic, typically one belonging to a person.

Question 15

Osmosis

Answer 15

a process by which the molecules of a solvent pass from a solution of low concentration to a solution of high concentration through a semi-permeable membrane

Question 16

Stimulus

Answer 16

something that rouses or stirs to action

Question 17

Organism

Answer 17

something having many related parts that function together as a whole

Question 18

Species

Answer 18

classification comprising related organisms that share common characteristics and are capable of interbreeding

Question 19

Common Name

Answer 19

Is the name that everybody knows and is the most popular

Question 20

Scientific Name

Answer 20

What is meant by scientific name?
A name used by scientists, especially the taxonomic name of an organism that consists of the genus and species or the name that every animal gets to tell which animal is Which

Question 21

Mutation

Answer 21

the changing of the structure of a gene

Question 22

Evolve

Answer 22

to develop or cause to develop gradually

Question 23

Natural Selection

Answer 23

the process through which populations of living organisms adapt and change

Question 24

Acquired

Answer 24

learn or develop

Question 25

Inherited

Answer 25

(of a quality, characteristic, or predisposition) derived genetically from one’s parents or ancestors.

Question 26

Living

Answer 26

Something that is alive and moving

Question 27

Non-Living

Answer 27

lacking the characteristics of life.

Question 28

Dead

Answer 28

no longer alive.

Question 29

Dormant

Answer 29

having normal physical functions that are slowed down

Question 30

Concentration

Answer 30

the action or power of focusing one’s attention or mental effort.

Question 31

Diffuse

Answer 31

the movement of molecules from a region of higher concentration to a region of lower concentration.

Question 32

Prokaryote

Answer 32

Does not have nucleus

Question 33

Eukaryote

Answer 33

Have nucleus

Question 34

Cell Cycle

Answer 34

a series of events that takes place in a cell as it grows and divides

Question 35

Who proposed the idea of natural selection and what does this mean?

Answer 35

Charles Darwin. Natural selection explains how genetic traits of a species may change over time.

Question 36

How are living things classified?

Answer 36

animal, plant, fungi, protist and monera. Living things are divided into five kingdoms

Question 37

What is the difference between a scientific and a common name?

Answer 37

A scientific name is a name that is in Latin has two words that first word is capitalized and the second one is not both of the words are italicized. A common name is one or two words it is not in Latin or italicized

Question 38

What is the difference between an acquired and an inherited trait?

Answer 38

Acquired traits are the ones that a person develops during his lifetime. These are not passed from one generation to another. On the other hand, inherited traits are present in a person since the time of his birth and are passed on from one generation to another.