crazam 2- cell division

Question 1

chemical components that make up chromosomes

Answer 1

•DNA
•protein

Question 2

sickle cell anameia is is a condition caused by what type of mutation

Answer 2

•gene

Question 3

male birds have two x chromosomes in their diploid cells. true or false

Answer 3

true

Question 4

events in prophase

Answer 4

•nuclear membrane breaks down
•chromosomes become shorter
•spindle forms

Question 5

an event that occurs during metsphase

Answer 5

•chromosome lines up along the equator
•spindle attatch to chromosome

Question 6

how does cell division occur in an animal cell

Answer 6

• cleavage formation

Question 7

how does cell division occur in a plant cell

Answer 7

•cell plate forms

Question 8

interphase

Answer 8

•the stage where the cell isn’t dividing

Question 9

mitosis

Answer 9

•cell division where two identical daughter cells are produced

Question 10

function of spindle

Answer 10

•pull chromosomes to the poles of the cell

Question 11

events in anaphase

Answer 11

•spindle shortening
•chromosomes pulled apart

Question 12

a human cell not produced by mitosis

Answer 12

•sperm/egg/gamete

Question 13

who proposed the theory of natural selection

Answer 13

•darwin and wallace

Question 14

ways meiosis differs from mitosis

Answer 14

•four new cells produced
•variation
•chromosome number halved

Question 15

cancer

Answer 15

•a group of disorders due to the uncontrolled rate of mitosis

Question 16

types of bio molecules produced during interphase

Answer 16

•dna
•rna
•protein
•fat
•carb

Question 17

what organelle is replicated during interphase

Answer 17

•mitochondrion
•chloroplast
•ribosomes

Question 18

two changes which will have occurred in the cell by the end of interphase

Answer 18

•condensed chromosomes
•formation of spindle
•disappearance of nuclear membrane

Question 19

evidence for evolution

Answer 19

•fossils
•genetics
•anatomy

Question 20

how do fossils show evidence of evolution

Answer 20

•structure changes over time, related to environment

Question 21

name of the pair of chromosomes that males and females differ in

Answer 21

•sex chromosomes

Question 22

what is meant by sex linkage

Answer 22

•gene(s) on the x or y chromosome

Question 23

common sex linked traits

Answer 23

•haemophilia
•colour blindness

Question 24

segregation

Answer 24

•traits are governed by pairs of alleles that separate at gamete formation

Question 25

assortment

Answer 25

•either member of a pair of alleles can combine with either member of another pair in gamete formation

Question 26

genetic engineering

Answer 26

•manipulation of genes

Question 27

isolation

Answer 27

•the removal of the chromosome containing the target gene from the human cell and the plasmid DNA from the bacterium

Question 28

ligation

Answer 28

•the joining of two sections of DNA to form a single strand

Question 29

transformation

Answer 29

•the uptake of DNA into a cell

Question 30

cloning

Answer 30

•the production of identical copies of the bacterium containing the target gene

Question 31

expression

Answer 31

•the formation of the product by the organism with the recombinant DNA

Question 32

where does mitosis occur in flowering plants

Answer 32

•root tips
•buds
•pollen