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Sceince > Mostly Everthing > Flashcards

Mostly Everthing Flashcards

1
Q

Cancer is

A

An uncontrolled division of cells caused by damage of genes or chromosomes causing more then normal being produced leading to a tumour

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2
Q

DNA Is

A

The DNA molecule made up of 2 strands that coil together to from a double helix

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3
Q

What is chromosomes

A

Cells contain a nucleus this is the control centre because it contains chromosomes theses are divided into smaller sections called genes and genes are made up of DNA

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4
Q

We’re are chromosomes found

A

Nucleus of cells

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5
Q

Phenotype is

A

Persons appearance on the outside

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6
Q

Genotype is

A

Tt,TT,tt

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7
Q

What is heterozygous

A

Different

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8
Q

What is homozygous

A

The same

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9
Q

What is alleles

A

From of a gene

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10
Q

What are genes

A

Sections of chromosomes that are code for particular characteristics

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11
Q

Dominant

A

The bigger letter over riding the smaller (T)

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12
Q

Ressive

A

The smaller letter (t)

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13
Q

What is genetic screening used for

A

To reduce the incidence of disease or condition caused my chromosomes or genes

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14
Q

What does an amniocentesis test consist of

A

Cells taken from amniotic fluid surrounding baby chromosomes in the cells are examined to see if the fetus has a condition

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15
Q

The ethical issues of genetic screening

A

It should we allowed be a free choice should it have to cost what if we can predict life expectancy

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16
Q

The nervous system

A

Responding to the environment anything we respond to is called stimulus every stimulus affects a receptor when a receptor is stimulated it causes an effector to produce a response

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17
Q

The nervous system equation

A

Stimulus - receptor - effector - response

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18
Q

What is insulin

A

Insulin is a hormone in to the body to control and keep the glucose level if the glucose gets to high it can cause illness or death

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19
Q

Type 1 diabetes

A

Starts in child hood - usually have to take insulin the rest of there lives - is caused by the pancreas not being able to produce insulin

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20
Q

Type 2 diabetes

A

Comes later in life - pancreas stops producing insulin- controlled by diet and then needs to be controlled my insulin injections- linked to lifestyle factors

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21
Q

Auxins role

A

The plant hormone affects the growth of the cells in the tip of a plant

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22
Q

Sperm tube

A

Carries the sperm from the testes to the urethra

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23
Q

Testes

A

Produce sperm

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24
Q

Prostate gland

A

Adds fluid to feed sperm

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25
Q

Urethra

A

Tube through which the sperm leaves penis

26
Q

Penis

A

What puts sperm into the vigina

27
Q

Scrotum

A

Sac that holds and protects testes

28
Q

Female - ovary

A

Produces ova (egg)

29
Q

Cervix

A

Opening of the uterus

30
Q

Vigina

A

Penis places sperm here

31
Q

Oviduct

A

Carries ova fertilisation takes place here

32
Q

Uterus

A

Carries foetus

33
Q

What’s the reagent for suger

A

Benedict’s

34
Q

What’s the initial colour for starch

A

Yellow/brown

35
Q

What is the reagent for fat

A

Ethanol

36
Q

What is the initial colour for suger

A

Blue

37
Q

What’s the reagent for protein

A

Buriet

38
Q

What’s the initial clour for fat

A

Clear

39
Q

What’s the Inital colour for protein

A

Blue

40
Q

What’s the reagent for starch

A

Iodine

41
Q

Final colour for sugar

A

Brick red

42
Q

Final colour for starch

A

Blue

43
Q

Final colour for protein

A

Purple

44
Q

Final colour for fat

A

White

45
Q

3 cells in plant but not animal

A

Cell wall vocoul chloroplast

46
Q

How many parts does an animal cell have

A

3

47
Q

What is the function of the nucleus

A

Control center

48
Q

What is the function of cytoplasm

A

We’re Chemical reactions occour

49
Q

What is the function of the Vacuole

A

We’re the Cell sap is

50
Q

What is choroplast

A

We’re photo takes place

51
Q

What does the cell membrane do

A

Controls what enters and leaves

52
Q

What does the cell wall do

A

Give support

53
Q

What does the nuclear membrane do

A

Controls what enters and leaves the nucleus

54
Q

Respiration equation

A

Glucose + oxygen - carbon dioxide + water +energy

55
Q

Macronutrients

A

Carbohydrates protein fata

56
Q

Micronutrients

A

Vitamin d/c fiber minerals

57
Q

Function of auxin

A

Auxin is produced at the tip of the plant and bends plant towards light

58
Q

Cell organisation

A

Cells - tissue - organs -system

59
Q

Working out heart rate increases

A

Resting heart rate - the heart rate after exercise…. Answer x resting heart rate

60
Q

What does the lowest power on the microscope look like

A

Very zoomed out

61
Q

The term meant by mutation

A

A random change in the structure or number of chromosomes or genes

Sceince (9 decks)

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