Notesale: Turn your study into money

Document Preview

Extracts from the notes are below, to see the PDF you'll receive please use the links above

---

constant during an investigation
...


When planning your method what do you need to make sure? - CorreCt
Answers -That it will procedure a range of results, reliable results, precise
results, and accurate results
...
Some data can be a
mixture of numbers and names such as the number of different types of
plants found in a garden
...
You need to make sure its a smooth curve of best fit, and
that the curve goes through or near most of the points
...


What is the Pattern on the graph? - CorreCt Answers -The shape of the
graph
...
The full trend is that the volume
increases as the time increases but then levels off after a certain amount of
time
...
To be confident in your conclusions you need a large
sample size to give strong evidence
...


What is secondary data? - CorreCt Answers -The data that you get in books,
scientific papers or the internet
...
It does not lie close to the line of
best fit
...
inaccurate measuring/recording and impurities
...
This can be corrected by
calibrating the balance
...


What is the random error? - CorreCt Answers -These are due to not
following the method correctly and can be minimized by repeating results
and taking averages
...


What is the accuracy? - CorreCt Answers -How close is the data to the true
value? Errors due to the equipment could make the results less
...
It
is usually ensured by repeating the readings to identify any anomalous
results
...
It can be improved by using measuring equipment that measure
to more decimal places
...


What are proteins made up of? - CorreCt Answers -amino acids

What four chemical groups are attached to the central (alpha) carbon? CorreCt Answers -A hydrogen atom
...
A carboxyl group
...


How many different R groups are there? - CorreCt Answers -There are 20
different R groups which means there are 20 different amino acids
...


What does a condensation reaction occur between? - CorreCt Answers -Two
amino acids
...


What is a dipeptide formed by? - CorreCt Answers -Two amino acids linked
by a peptide bond

---