1.6 cell division simple

Question 1

cell cycle stages

Answer 1

interphase
prophase
metaphase
anaphase
telophase

Question 2

during most of the cycle what stage is it in

Answer 2

interphase

Question 3

human chromosomes

Answer 3

46

Question 4

how many homologous pairs do humans have

Answer 4

23

Question 5

total number of chromones

Answer 5

diploid

Question 6

half of diploid

Answer 6

haploid

Question 7

where does mitosis take place in plants

Answer 7

meristems
tip of the root
tip of the shoot

Question 8

stages of mitosis

Answer 8

no interphase
prophase
metaphase
anaphase
telophase

Question 9

during interphase

Answer 9

• There is a replication of organelles such as mitochondria and chloroplasts which
  have their own DNA.
• New organelles are made.
• There is a synthesis of ATP and proteins.
• There is an increase in cell size.

Question 10

what does mitosis produce

Answer 10

daughter cells that are genetically identical to parent cells

Question 11

why does cell division occur

Answer 11

• growth
• repairing damaged cells
• replacement of old, worn-out cells
• asexual reproduction.

Question 12

how are tumors formed

Answer 12

cell cycle is controlled by genes. If the genes that regulate the cell cycle
are damaged, uncontrolled mitosis can occur. This rapid replication of cells
can form tumours, leading to a disease called cancer. These genes that cause
cancer are called oncogene

Question 13

the genes that cause cancer

Answer 13

oncogenes

Question 14

mitosis prophase

Answer 14

• Chromosomes condense and become visible.
• Centrioles move to opposite sides of cell in animal cells.
• Spindle forms from
  microtubules.
• Nuclear envelope disintegrates

Question 15

mitosis metaphase

Answer 15

• Centromeres of
  chromosomes
  attach to spindle
  and line up on
  the equator.

Question 16

mitosis anaphase

Answer 16

• Spindle fibres shorten.
• Centromere separates and individual
  chromatids are pulled
  to the poles centromere first.

Question 17

telophase mitosis

Answer 17

• Spindle breaks down.
• Chromosomes uncoil .
• Nuclear envelope
  reform

Question 18

meiosis G1

Answer 18

growth after pmat

Question 19

meiosis G2

Answer 19

interphase- growth and prep for mitosis

Question 20

g1 dna content of cell

Answer 20

20

Question 21

s - synthesis

Answer 21

20 increasing to 40

Question 22

G2

Answer 22

40

Question 23

M

Answer 23

40