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bio 30 unit 1 > mitosis > Flashcards

mitosis Flashcards

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Biology 101 flashcards
1
Q

what is mitosis

A

process of cell division in somatic cells

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2
Q

what does the nucleus hold

A

DNA

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3
Q

G1- growth phase 1

A

The cell is doing its usual work to stay alive, growing, using energy

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4
Q

S- Synthesis

A

DNA replication

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5
Q

G2 = growth phase 2

A

cell grows and prepares for mitosis, double checks for errors

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6
Q

somatic cell

A

Body cell that has all 46 pairs of chromosomes

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7
Q

Diploid cell

A

Cell containing two sets of chromosome (2n), a set from each parent

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8
Q

Haploid cell

A

cell containing one set of chromosome, divide by meiosis

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9
Q

Exception of haploid cells dividing in mitosis

A

-bees because they come from unfertilized eggs
-Gametophytes

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10
Q

Gametophytes

A

stage in a plant’s life that makes sperm and eggs.

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11
Q

Chromatin

A

thin un-condensed strands where DNA is found

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12
Q

Chromosome

A

Chromatin is condensed into chromosomes, humans have 46 chromosomes

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13
Q

Chromatid

A

identical half of a chromosme
-sister chromatids have same alleles

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14
Q

centromere

A

holds together 2 sister chromosomes and 2 homologous chromosomes

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15
Q

Gamete

A

sex cell
Sperm cell in males
Egg cell in female
half the number of chromosomes (23)

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16
Q

Homologous chromosome

A

Carry some genes but have different Alleles

17
Q

Spindle fibre

A

Structure made of protein fibres that help separate chromosomes

18
Q

Zygote

A

cell that is formed when sperm and egg cell combine during fertilization. Is diploid

19
Q

Histone

A

Protein that DNA gets tightly wrapped around

20
Q

Gene

A

chunks of DNA found within a chromosome

21
Q

DNA

A

codes with amino acid, join tg to make a protein that determines the traits you have

22
Q

Alleles

A

Alleles are different versions of a gene, ex. eye color, hair etc.

23
Q

karyotype

A

When chromosomes are organized based on their length, get paired together which can help identify diseases

bio 30 unit 1 (10 decks)

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