Science Gr. 10 - Cells

Question 1

What happens during G1 in Interphase?

Answer 1

Cell growth, protein synthesis, organelles duplicate

Question 2

What happens during S in Interphase

Answer 2

DNA replication

Question 3

What happens during G2 in Interphase

Answer 3

DNA is checked for errors and prepares for cell division

Question 4

What is the order of Mitosis?

Answer 4

Prophase, Metaphase, Anaphase, Telophase

Question 5

What happens after Telophase

Answer 5

Cytokinesis

Question 6

What happens during prophase? Get at least one right.

Answer 6

Chromatin condense into chromosomes and centrioles (centrosomes) go to the opposite sides of the nucleus.

Question 7

What happens during metaphase?

Question 8

What happens during anaphase?

Question 9

What happens during telophase

Question 10

What is Apoptosis?

Answer 10

When a cell self destructs (programmed, because it is not useful)

Question 11

What is Necrosis?

Answer 11

Premature death of cell

Question 12

True or false: Is cancer caused by cells that should have died dividing uncontrollably?

Answer 12

True

Question 13

Cancer is caused by what?

Answer 13

Cells that should’ve died (due to changes of DNA) dividing uncontrollably.

Question 14

Where is DNA found?

Answer 14

In the nucleus

Question 15

What is the structure of DNA?

Answer 15

Double-stranded helix

Question 16

True or false: DNA is a polynucleotide (a molecule composed of a chain of nucleotides)?

Answer 16

True

Question 17

What does a nucleotide consists of?

Answer 17

Nitrogen base, a sugar, and a phosphate

Question 18

What is a nucleotide?

Answer 18

Basic building block of nucleic acids

Question 19

What is a sugar? (For DNA)

Answer 19

deoxyribose

Question 20

What are examples of nitrogen bases?

Answer 20

Adenine, thymine, guanine, cytosines

Question 21

True or false:
Can adenine pair with guaine?

Answer 21

False adenine can only pair with thymine

Question 22

Who was part of the process of discovering the DNA structure?

Answer 22

James Watson, Francis Crick, Rosalinds Franklin

Question 23

Are the two DNA molecules identical to each other?

Answer 23

Yes

Question 24

Does DNA molecule unzips?

Answer 24

Yes

Question 25

Is one half of the DNA reversed?

Answer 25

Yes

Question 26

True or false: The DNA is not in the form of chromatin

Answer 26

False, it is.

Question 27

What is a segment of DNA called?

Answer 27

a gene

Question 28

Genes do not determine the characteristics of an organism?

Answer 28

No, they do.

Question 29

How many genes does a human have?

Answer 29

~20 000

Question 30

Is sickle cell anemia a harmful example of mutation?

Answer 30

Yes

Question 31

True or false: Each cell has different DNA

Answer 31

False, each cell has the same DNA but some parts are turned on or off.

Question 32

How do cells determine their function?

Answer 32

By their shape and structure

Question 33

What are stem cells?

Answer 33

Cells with potential to develop into many different types of cells in body