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Cell Division Flashcards

1
Q

What is the smallest unit of life?

A

Cells

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2
Q

What is the biggest organelle of a Eukaryotic Cell?

A

DNA

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3
Q

What is found in the Nucleus?

A

DNA

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4
Q

What is DNA and what does it stand for?

A

DNA contains genetic material and it stands for DEOXY RIBO NUCLEIC ACID

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5
Q

What does DNA look like inside a nucleus?

A

DNA looks like a double helix or like a double stranded of ladder and jumble up like a ball of yarn

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6
Q

What is genetic material?

A

Genetic material are genes or traits that can be passed from parents to offspring

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7
Q

How does DNA grow and reproduce>

A

DNA reproduce through stages called INTERPHASE and MITOSIS

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8
Q

What happens during INTERPHASE?

A

INTERPHASE is when DNA develops and goes through replication

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9
Q

What does REPLICATION mean?

A

Copy or duplicate

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10
Q

What happens during REPLICATION?

A

DNA replicates itself and wraps up tightly and neatly into chromatid

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11
Q

What is a chromatid?

A

A DNA that is neatly wrapped up (TWO CHROMATIN/singular : chromatids)

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12
Q

What is a CHROMOSOME?

A

When DNA wraps around a protein,it is called a chromosome

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12
Q

How many chromosomes do humans have?

A

46

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13
Q

How many chromosomes do the parents pass onto their offspring?

A

23 each parent

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14
Q

Each segment of DNA is known as a what?

A

Gene

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15
Q

What does a gene contain?

A

Genetic traits

16
Q

What happens during MITOSIS?

A

During MITOSIS,chromosomes go through 5 phases

17
Q

What are the 5 phases of Mitosis?

A

PROPHASE , METAPHASE , ANAPHASE , TELOPHASE , CYTOKINESIS

18
Q

What happens in phase 1?

A

Chromosomes appear.PROPHASE

19
Q

What happens in phase 2?

A

Chromosomes line up. METAPHASE

20
Q

What happens in phase 3?

A

Chromosomes seperate.ANAPHASE

21
Q

What happens in phase 4?

A

Chromosomes pinch.TELOPHASE

22
Q

What happens in phase 5?

A

Two new daughter cells form. CYTOKINESIS

23
Q

How many chromosomes do humans sex cells have?

A

23 chromosomes in each sex cell (egg or sperm)

24
Q

How many chromosomes do human body cells have?

A

46 in each cell

25
Q

What do you call a cell with full set of chromosomes?

A

DIPLOID CELL

26
Q

What do you call a cell with HALF set of chromosomes?

A

HIPLOID CELLS

27
Q

Do bacteria cells go through mitosis like the eukaryotic cells?

A

No bc they dont have nucleus

28
Q

how do bacteria cells divide

A

they split in half by BINARY FISSION

29
Q

Why do our body cells divide?

A

to replace dead cells,to grow and develop

30
Q

what is the name of the DNA backbone?

A

sugar phosphate

31
Q

name 4 DNA bases

A

guanine,cytosine,thymine,adenine

32
Q

what pairs with thymine and what pairs with guanine?

A

thymine=adenine guanine=cytosine

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