Week 3 – DNA Discovery – Key


1.

sci·ence

noun

1.

a branch of knowledge or study dealing with a body of facts or truths systematically arranged and
showing the operation of general laws: the mathematical sciences.

2.

systematic knowledge of the physical or material world gained through observation and
experimentation.

3.

any of the branches of natural or physical science.

4.

systematized knowledge in general.

5.

knowledge, as of facts or principles; knowledge gained by systematic study.



3.


The electric bulb was invented / discovered by Thomas Alva Edison.

The first antibiotic drug, penicilin, was invented / discovered by Alexander Felming.

The telephone was invented / discovered by Aexander Graham Bell.

America was invented / discovered by Christopher Columbus.


4.                  Connect words that go together. There are more possible options.

1) invent

            e) a new technique

2) discover

            g) a new drug

3) formulate

            f) a  theory / hypothesis

4) calculate

            c) mass / density

5) develop

            d) a new machine

6) propose

            b) a new law / principle

7) carry out

            a) research


5.         What was invented / discovered / developed / formulated … and by whom?


a) the law of gravity

                                 4. Newton, mathematician, physicist

c) the structure of DNA

                                 6. Watson, Crick and Wilkins, scientists

d) the modern theory of evolution

                                 2. Darwin, biologist

e) the theory of relativity

                                 8. Einstein, physicist

f) steam engine

                                 5. James Watt, inventor

g) radioactivity

                                 3. Marie Curie, chemist and physicist

h) x-rays

                                 7. Wilhelm Conrad Rontgen, physicist

i) atomic theory

                                 1. John Dalton, chemist






7.  Listening/watching. The DNA Story – 1973.

Listen to Francis Crick speaking about his work at the Cavendish Laboratory and fill in the gaps
with the missing words.^2


Crick: I wasn't so sure, I think, at that time, as to whether DNA or protein was

the genetic material. Of course I knew about Avery's experiments, and they were very

suggestive, but you could argue that they weren't watertight. I knew

Maurice Wilkins, I'd known him before I went to the Cavendish, and he was working. on DNA and I'd
gone to talk to him, but I didn't actually myself work on it, mainly because at the Cavendish they
were working on protein structure.  So I learnt about polypeptide chains, x-ray diffraction, and
things of that sort, and essentially continued to be interested in DNA rather than doing any
experiments or calculations.

                                                            ^