Questão 1
Questão
Which of these are characteristics of an animal cell?
Responda
-
Cell Wall
-
Cell Membrane
-
Cytoplasm
-
Nucleus
-
Mitochondria
-
Vacuole
Questão 2
Questão
Which of these are characteristics of a bacterium cell?
Responda
-
Plasmids
-
Chlorophyll
-
Chromosomal DNA
-
Nucleus
-
Flagellum
-
Cell wall
Questão 3
Questão
What does a light microscope show?
Responda
-
Inside of mitochondria
-
Outside of Mitochondria
-
Inside of chloroplasts
-
Outside of Chloroplasts
-
Nuclei
Questão 4
Questão
Which of these formulae are correct?
Questão 5
Questão
A stand of DNA has a...
Responda
-
triple helix structure.
-
double helix structure.
-
single helix structure.
Questão 6
Questão
Which of these are the correct base pairs?
Responda
-
Adenine-Thymine
-
Cytosine-Guanine
-
Guanine-Thymine
-
Cytosine-Adenine
Questão 7
Questão
Base pairs are joined by...
Responda
-
Weak hydrogen bonds
-
Strong hydrogen bonds
-
Weak hydrogen fibres
-
Strong hydrogen fibres
Questão 8
Questão
Who discovered the double helix structure?
Responda
-
Watson and Crick
-
Franklin and Wilkins
-
Watson and Wilkins
-
Franklin and Crick
Questão 9
Questão
Watson and Crick used this idea and their knowledge of _________ to make a model of a DNA molecule.
Responda
-
Base pairs
-
Amino acids
-
Proteins
-
Genes
Questão 10
Questão
Proteins are made from...
Responda
-
amino acids
-
hydrogen
-
Chloroplasts
-
Ribosomes
Questão 11
Responda
-
A single strand molecule and has the base uracil (U).
-
A double helix structure.
-
A single strand molecule and has the base adenine (A).
-
A single strand molecule and has the base cytosine (C).
Questão 12
Questão
Which is the correct order of protein synthesis?
Responda
-
DNA unzips, Transcription, mRNA joins a ribosome, amino acids are brought to the ribosome by tRNA, ribosome sticks them together to make a polypeptide (protein), translation.
-
Translation, DNA unzips, transcription, mRNA joins ribosome, amino acids are brought to the ribosome by tRNA, ribosome sticks them together to make a polypeptide (protein).
-
Amino acids are brought to the ribosome by tRNA, ribosome sticks them together to make a polypeptide (protein), translation, DNA unzips, transcription, mRNA joins ribosome.
Questão 13
Questão
Mutations can be...
Responda
-
Harmful
-
Beneficial
-
Neutral
-
All of these
Questão 14
Questão
What are enzymes? (Select two)
Responda
-
Biological catalysts
-
Proteins
-
Organelles
-
Cells
Questão 15
Questão
How do enzymes work?
Responda
-
Finds it's specific substrate that fits the active sight, the 'lock and key' mechanism.
-
Finds any substrate to react with
-
Finds two or more substrates and makes them one
Questão 16
Questão
A higher temperature means...
Responda
-
faster reactions.
-
slower reactions.
-
nothing.
Questão 17
Questão
If it is to hot the enzyme will...
Responda
-
denature.
-
denurture.
-
disconnect.
Questão 18
Questão
What does denature mean?
Responda
-
The enzyme alters in shape and breaks down other substrates than it usually would.
-
The enzyme loses its shape and can't break down substrates.
-
The enzyme loses its shape but continues to work.
Questão 19
Questão
What else denatures an enzyme (other than temperature)?
Questão 20
Questão
What else effects the rate of reaction of enzymes?
Questão 21
Questão
Which of the following are benefits of the Human Genome Project?
Responda
-
Develops new and better medicines
-
Improves forensic sciences
-
Discrimination from employers/insurers
-
Geneism
Questão 22
Questão
What are the benefits of genetic engineering? (select the answers with the correct examples)
Responda
-
Reduce vitamin A deficiency (golden rice with beta carotene)
-
Reduce vitamin A deficiency (with supplements)
-
Producing human insulin (human farming)
-
Producing human insulin (insulin-producing bacteria)
-
Increasing crop yield (weather resistant crops)
-
Increasing crop yield (herbicide resistant crops)
Questão 23
Questão
Which of the following show the correct method of genetic engineering?
Responda
-
Useful gene cut out of chromosome using bacteria, bacterium used to cut open another chromosome, useful gene inserted into cut chromosome.
-
Useful gene cut out of chromosome using enzymes, enzymes used to cut open another chromosome, useful gene inserted into cut chromosome.
-
Useful gene cut out of chromosome using microscopic knife, microscopic knife used to cut open another chromosome, useful gene inserted into cut chromosome.
Questão 24
Questão
Controversy connected with genetic engineering?
Questão 25
Questão
What are human body cells?
Questão 26
Questão
Mitosis is for...
Responda
-
sexual reproduction.
-
asexual reproduction.
-
growth and repair.
Questão 27
Questão
Which of the following is mitosis?
Questão 28
Questão 29
Questão 30
Questão
Which of the following is meiosis?
Questão 31
Questão
Cloning is an example of what?
Responda
-
Asexual reproduction
-
Sexual reproduction
Questão 32
Questão
This is the process of cloning mammals, what are the issues in doing so?
Responda
-
Reduced gene pool (fewer alleles)
-
Shortened lifespan
-
Preserves endangers species
-
Better understanding of ageing and age-related disorders
Questão 33
Questão
Cells in an embryo are...
Responda
-
differentiated.
-
undifferentiated.
Questão 34
Questão
Stem cells can turn into...
Questão 35
Questão
Positives of stem cell research?
Responda
-
Can be used to cure diseases (sickle cell anaemia)
-
Can be specialised to replace damaged ones
-
Embryos are potential lives so shouldn't be used.
Questão 36
Questão
Which is the correct equation for aerobic respiration?
Questão 37
Questão
What are the reactants in photosynthesis?
Responda
-
carbon dioxide
-
water
-
oxygen
-
glucose
Questão 38
Questão
What are the products of photosynthesis?
Responda
-
carbon dioxide
-
water
-
glucose
-
oxygen
Questão 39
Questão
What are the limiting factors of photosynthesis?
Responda
-
Light intensity
-
Water concentration
-
CO2 concentration
-
Temperature
Questão 40
Questão
Which of the following adaptions help photosynthesis? (Some of these are written wrong)
Responda
-
Broad leaves
-
Chlorophyll
-
Thick
-
Small surface area
Questão 41
Questão
The movement of water molecules across a partially permeable membrane from a region of high water concentration to a region of low water concentration.
What is this the description for?
Questão 42
Questão
Which part of a plant transports water and mineral from the roots to the rest of the plant?
Questão 43
Questão
Which part of a plant transports sugars from the leaves to growing and storing tissues?
Questão 44
Questão
What is transpiration? (Select two)
Responda
-
The loss of water from a plant caused by evaporation and diffusion.
-
The gain of water to a plant caused by osmosis and active transport.
-
The loss of water from a plant caused by diffusion only.
-
The gain of water to a plant caused by osmosis only.