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School Stuff > Science Gr. 10 - Cells > Flashcards

Science Gr. 10 - Cells Flashcards

1
Q

What happens during G1 in Interphase?

A

Cell growth, protein synthesis, organelles duplicate

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2
Q

What happens during S in Interphase

A

DNA replication

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3
Q

What happens during G2 in Interphase

A

DNA is checked for errors and prepares for cell division

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4
Q

What is the order of Mitosis?

A

Prophase, Metaphase, Anaphase, Telophase

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5
Q

What happens after Telophase

A

Cytokinesis

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6
Q

What happens during prophase? Get at least one right.

A

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

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7
Q

What happens during metaphase?

A
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8
Q

What happens during anaphase?

A
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9
Q

What happens during telophase

A
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10
Q

What is Apoptosis?

A

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

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11
Q

What is Necrosis?

A

Premature death of cell

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12
Q

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

A

True

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13
Q

Cancer is caused by what?

A

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

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14
Q

Where is DNA found?

A

In the nucleus

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15
Q

What is the structure of DNA?

A

Double-stranded helix

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16
Q

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

17
Q

What does a nucleotide consists of?

A

Nitrogen base, a sugar, and a phosphate

18
Q

What is a nucleotide?

A

Basic building block of nucleic acids

19
Q

What is a sugar? (For DNA)

A

deoxyribose

20
Q

What are examples of nitrogen bases?

A

Adenine, thymine, guanine, cytosines

21
Q

True or false:
Can adenine pair with guaine?

A

False adenine can only pair with thymine

22
Q

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

A

James Watson, Francis Crick, Rosalinds Franklin

23
Q

Are the two DNA molecules identical to each other?

24
Q

Does DNA molecule unzips?

25
Q

Is one half of the DNA reversed?

26
Q

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

A

False, it is.

27
Q

What is a segment of DNA called?

28
Q

Genes do not determine the characteristics of an organism?

A

No, they do.

29
Q

How many genes does a human have?

30
Q

Is sickle cell anemia a harmful example of mutation?

31
Q

True or false: Each cell has different DNA

A

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

32
Q

How do cells determine their function?

A

By their shape and structure

33
Q

What are stem cells?

A

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

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