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Combine Science > Biology Mock Yr1 > Flashcards

Biology Mock Yr1 Flashcards

1
Q

Name the part of an animal cell where respiration occurs

A

Mithochondia

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2
Q

Give One advantage of using microscope to look at Cells

A

either one
higher magnification
higher resolution
more detail than light microscopes

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3
Q

What its the stage function

A

To place slide on

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4
Q

What its the stage eyepiece function

A

To look through to see the cells

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5
Q

What is the smallest unit

A

Picrometer

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6
Q

Animal with the most desirable ___________________ were bred togheter. This is called _________________ _________________

A

desirable charactistic
called **Selective **Breeding

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7
Q

What does the term “fertillsation”

A

Male and female gametes fuse forming a zygote forming a diploid

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8
Q

What does the term isotope mean

A

Same number of proton but different number of neurone.

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9
Q

How many cell division does Meiosis occur

A

4

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10
Q

How many chromosome does Meiosis have

A

46

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11
Q

What does the term meiosis mean?

A

Type of Cell division in sexually reproducing organisms that reduces

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12
Q

How many chromosome does Mitosis have

A

24 chromosme

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13
Q

How many cell division does Mitosis

A

2

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14
Q

What does the term “Mitosis” mean

A

a cell replicates its chromosomes and then segregates them,

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15
Q

Describe 2 ways that sperm cell is specialised?

A

1) a tail to move them towards an egg cell

2)mitochondria to provide energy.

3)an acrosome (part of the tip of the head) releases enzymes to digest the egg membrane.

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16
Q

Does animal cell have a cell wall?

A

No

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17
Q

What are Plant cell made up?

A

cell wall, cell membrane, cytoplasm, nucleus
EXTRA:
vacuole, chloroplasts ,cell wall

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18
Q

What are Animal cell made up?

A

Nucleus
Cell membrane
Mitochondria
Cytoplasm

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19
Q

What Made up a bacteria cell made up?

A

cell wall, cell membrane, cytoplasm, nuclear material, ribosome, plasmid

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20
Q

risk of developing cardiovascular diseases(heart disease)

A

reduce alcohol intake
physical inactivity and poor nutrition

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21
Q

give 1 advantages of domesticating animal

A

give human protection
food security
animal are less dangerous
companionship
make job easier

22
Q

Name 2 treatment for cardiovascular disease

A

bypass surgery
medication

23
Q

what does the term cancer mean

A

uncontrolled cell division

24
Q

state one possible cause of genetic variation in apple tree

A

mutation
sexual reproduction
different combination of alleles can occur

25
Q

Name the type of reproduction that produces genetically identical organism

A

asexual or
asexual reproduction

25
Q

State 2 reasons for the change of people smokers cigarettes

A

People are aware of the danger of smoking

smoking cigarette is expensive

26
Q

State one adv and dis of growing genetically identical apple tree

A

adv
1) can be produce quicker
2) fruit will have desired qualities
dis
1) reduce gene pool
2) cannot survive environmental change

27
Q

Explain why antibiotic can be used to treat bacterial information?

A

They inhibit process(1) so bacteria are killed and stops reproduction (1) Does not affect/damage to host cell

28
Q

What does the term “Pathogen” mean?

A

They are organism that cause disease.

29
Q

What’s the differences between Plant cell and bacteria?

A

Similarities
cell wall
cell membrane
both have DNA
ribosome

Differences
plasmid(BACTERIA)
smaller size(BACTERIA)
Chloroplast(PLANT)
vacuole(PLANT)

30
Q

How is cholera spread?

A

In water

31
Q

How is malaria spread?

A

By animal vector

31
Q

How was Tool P made?

A

by hitting it with another stone / knocks flakes or chip off.

32
Q

Evolution is the change of inherited characteristic thought ___________ selection
These changes occurs because genes ___________.

A

1) thought natural
2) gene.. mutate

33
Q

Describe 2 ways that stone tools and fossils can be dated to find how old they are?

A

1) Compare with other tools/fossil that are already outdated

2) Layer of rock which found

3) Layer of rock how deep down each are found

4) Radiometric dating

34
Q

Which process moves alcohol from blood into the liver

A

Diffusion

35
Q

State 2 piece of health advice for people about drinking alcohol

A

Reduce alcohol intake
Drink alcohol with meals

36
Q

State One genre are found in cell?

A

In chromosome /Nuclease

37
Q

what’s a genotype

A

When a punnet square is expressed in 2 lower case letter example “ff”

38
Q

State one chlamydia can be describe as a communicable diseases

A

passed/spread from person to person
or
caused by bacteria

39
Q

Explain why the enzymes protease was added to the mixture

A

Protease break down protein in cell membrane(1)Destroy enzymes that may break down the DNA(1)

40
Q

Give one way transmission of chlamydia can be prevented

A

avoid sexual contact
use condom/femidom
treat the infection
screen people for infection

41
Q

These student wanted to compare the mass of DNA found in fresh peas with the mass of the DNA found in fresh beans

Give 2 variable the student would need to control to make a valid comprassion?

A
  • Mass of peas and bean
  • Method of crushing
  • Volume of washing up liquid detergent/water
    -Temperature if qualified
    -Volume of ethanol
    -Time if qualified
42
Q

State Why ice-cold ethanol was poured with the filtration

A

To precipate the DNA because DNA in insoluble in ethanol

43
Q

Explain why chlamydia can be treated with antibodies?

A

Chlamydia is a bacterial infection, so you need to take antibiotics to cure it

44
Q

State how percentile charts are used?

A

Monition height/growth overtime

compare growth of an individual against the standard growth pattern

45
Q

What are the code for the complementary DNA stand

A

A-T-C-G
(Expressed using capital letter only)

46
Q

What’s the maximum number of amino acid coded for by this stand of DNA

A

4

47
Q

What’s the shape of a DNA molecule

A

Double helix structure

48
Q

Which term describe the area of a root where may cells are dividing by mitosis?

A

meristem

49
Q

How do you devise a plan to investigate the effect of pH activity of this enezymes

A

1) add enzymes solution / plant root cell to glucose

2) test to presence starch

3) test every min until a positive result for starch

4) repeat at more than one pH of difference pH values

5) Same volume of solution and same temperature

50
Q

Describe how the base pairs are bonded together in a DNA molecule.

A

hydrogen bond
weak
complementary base
A - T - G - C

Combine Science (11 decks)

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