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Human Anatomy > Cell division > Flashcards

Cell division Flashcards

1
Q

what is the smallest unit of life?

A

cell

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2
Q

what is found in the nucleus?

A

DNA

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2
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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3
Q

What does DNA look like inside a nucleus?

A

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

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4
Q

what is the biggest organelle of a eukaryotic cell

A

Nucleus

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5
Q

what is genetic material?

A

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

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6
Q

How does DNA grow and develop and reproduce?

A

DNA reproduce through stages called INTERPHASE AND MITOSIS

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7
Q

what happens during INTERPHASE?

A

INTERPHASE is when DNA develops and goes through replication

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8
Q

what does REPLICATION mean ?

A

copy or duplicate

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9
Q

what happens during REPLICATION?

A

DNA replicates itself and wrap up tightly and neatly into chromatid

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10
Q

What is chromatid?

A

A DNA that is neatly wrap(two CHROMATIN/singular;chromatids)

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11
Q

what is 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

Humans have 46 chromosomes

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13
Q

How many chromosomes does each parent pass on to their offspring?

A

23 chromosomes from each parent

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14
Q

Each segment of DNA is known as a what?

A

Gene

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14
Q

What does a gene contain?

A

genetic traits

15
Q

what are the 5 phrases of mitosis?

A

ph:1 PROPHASE; ph: METAPHASE; ph 3: ANAPHASE; ph4: TELOPHASE; ph5: cytokinesis

15
Q

what happens during MITOSIS?

A

during MITOSIS,chromosomes go through 5 phases

16
Q

what happens during each phase?

A

phase 1: PROPHASE- chromosomes appear

16
Q

what happens during each phase?

A

phase 2 : METAPHASE- chromosomes line up

17
Q

what happens during each phase?

A

Phase 3: ANAPHASE - chromosomes seperate

18
Q

what happens during each phase?

A

Phase:4 TELOPHASE-chromosomes pinch

19
Q

what happens during each phase?

A

Phase:5: CYTOKINESIS-two new daughter cells form

20
Q

How many cells do human sex cells have?

A

23 Chromosomes in each sex cell ( egg or sperm)

20
Q

how many cells do human body cells have?

A

46 Chromosomes in each cells

21
Q

what do you call a cell with a full set of chromosomes (46)?

A

a DIPLOID cell

21
Q

what do you call a cell with half set of chromosomes(23) ?

A

a HAPLOID cell

21
Q

Do bacteria cells go through mitosis like the eukaryotic cells?

A

no, bacteria does not have nucleus

22
Q

how do bacteria cells divide?

A

bacteria splits in half BINARY FISSION

23
Q

why do our body cells divide?

A

our body cells divide to replace dead cells,to grow and develop

24
Q

what is the name of the DNA backbone called?

A

sugar phosphate

24
Q

name all 4 DNA bases

A

guanine,cytosine,thymine,adenine

25
Q

what DNA bases pair up with thymine and guanine

A

guanine=cytosine
Thymine = Adenine

Human Anatomy (6 decks)

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