Worksheetsscience 9
Total questions: 30
Worksheet time: 10mins
Which is in order from largest to smallest structure?
chromosome, DNA strand, gene, nucleotide
chromosome, gene, DNA strand, nucleotide
gene, DNA strand, chromosome, nucleotide
DNA strand, chromosome, gene, nucleotide
DNA is shaped in a:
double helix
tightly packed swirl
twisted ladder
nucleotide
Where in the cell is DNA found?
Nucleus
Cytoplasm
Chloroplast
Cell Membrane
What are sections of DNA called?
DNA
Genes
Chromosomes
Nucleus
How many pairs of chromosomes do humans have?
21
22
23
24
The union of egg and sperm to form a new offspring is
gene
fertilization
amino acids
DNA
How are similarities passed from parent to offspring?
through teaching
through learning
through blood
through genes
What is probability?
the number of times a coin lands heads up
the actual results from a series of events
the way the results of one event affect the next event
a number that describes how likely it is that an event will occur
When sex cells combine to produce offspring, each sex cell will contribute
twice the number of chromosomes in body cells.
the normal number of chromosomes in body cells.
half the number of chromosomes in body cells.
one fourth the number of chromosomes in body cells.
Who discovered the DNA model?
James Watson
Rosalind Franklin
Maurice Wilkins
Francis Crick
Polymerisation of chloroethene forms
Polyethene
Polypropene
Polystyrene
Polyvinyl chloride
Which of the following occurs during vulcanisation of rubber?
Protein membrane is covered with hydroxide ions
Cross-links are formed between chains of polyisoprene
Long chains of rubber polymers are entangled randomly
Addition polymerisation takes place when isoprene
monomers combine with each other
Large molecules made up of small monomers are called
polymers
peptides
peptones
monomers
Which polymers occur naturally?
Starch and Nylon
Starch and Cellulose
Proteins and Nylon
Proteins and PVC
In an endothermic reaction, heat is ...
taken in
given out
Fossil Fuels (choose ALL that apply)
considered nonrenewable resources
cause pollution in the atmosphere
are renewable resources
oil, coal and natural gas
Some DISADVANTAGES of Fossil Fuels are (Select ALL that apply)
air pollution
acid rain
climate change
a lot of energy
Energy that is stored is called...
Kinetic Energy
Potential Energy
Mechanical Energy
Thermal Energy
Which form of energy do windmills (molinos) use to generate electricity?
Thermal energy
Light energy
Kinetic energy
Gravitational potential energy
What type of energy is being transformed when you use a flashlight?
From chemical energy to electrical energy
From electrical energy to thermal energy
From chemical energy to light energy
From electrical energy to light energy
Energy can't be created or destroyed. It can only be transfered
True
False
