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Biol 207 > Lecture 4 > Flashcards

Lecture 4 Flashcards

1
Q

What is Cell division in bacteria known as?

A

Binary Fission

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2
Q

What does FtsZ do in bacterial cell division?

A

It forms a ring like structure in the centre which creates a septum in the cell membrane which divides cells

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3
Q

What happens in G1?

A

The cell grows

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4
Q

What happens in S?

A

Replication of DNA

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5
Q

What happens in G2?

A

Cell prepares for mitosis

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6
Q

What is interphase comprised of?

A

G1, S, G2

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7
Q

What is G0?

A

A specialized resting phases

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8
Q

What do chromosomes look like during interphase?

A

They are decondensed and referred to as a chromatin but are orderly in territores

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9
Q

What do nuclear pores allow for?

A

Entry and exit of molecules

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10
Q

What is in the function of the Nucleolus

A

Ribosomal RNA production and ribosomes assembly

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11
Q

What does Cohesin do?

A

Wraps around the sister chromatids and holds them together starting from s phase

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12
Q

What does Tubulin do?

A

Attaches to centromeres and pulls sister chromatids apart

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13
Q

what is the function of the Kinetochore?

A

Acts as a docking platform for the mitotic spindle fiber at the centromere

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14
Q

What are microtubules made of?

A

Tubulin

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15
Q

What do spindle poles do ?

A

Produce microtubules

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16
Q

What is another name for Spindle Poles?

A

Microtubule-organizing centres (MTOCs). Centrosomes in animals and Spindle pole bodies in yeast and other fungi

17
Q

What are Centrosomes composed composed of?

A

Centrioles and the Pericentriolar Matrix

18
Q

What does Condensin do?

A

In metaphase it further compacts chromosomes

19
Q

What is Anaphase triggered by?

A

Cohesin degradation

20
Q

What does n represent?

A

The number of chromosomes in a cell

21
Q

What does c represent?

A

The amount of DNA in base pairs

22
Q

How many chromosomes?

A

46

23
Q

What is the n value for a somatic cell?

A

2n

24
Q

What is the c value in gametes?

A

1c

25
Q

What is the c value in G1?

A

2c

26
Q

What is the c value in G2?

A

4c

27
Q

What is the purpose of mitosis?

A

Maintain continuity and stability during cell division

28
Q

What is the purpose of meiosis?

A

Generate variability and diversity

29
Q

what is the n and c number at the end of meiosis?

A

1n and 1c

30
Q

What the n and c values of gemetocytes?

A

2n and 4c

Biol 207 (14 decks)

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