Science Quiz / BY5.1 Replication and Protein Synthesis

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Can you name the BY5.1 Replication and Protein Synthesis?

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What is the major function of DNA in all cells?
What is another major function of DNA in dividing cells?
During what stage of cell division does this function take place?
The.............bonds holding the...................together break and the two halves of the molecule separate.
This enzyme catalyses the addition of free nucleotides to the exposed bases.
Each chain acts as a..................so that free nucleotides can be joined to their.................................bases by the enzyme.
The two daughter DNA molecules consist of one......................................chain and one chain that has been..................from the original molecule.
This is called the...........................
Whose experiments proved this hypothesis?
What bacteria was used in these experiements?
What isotope was present in the medium?
Where was this isotope incorperated into?
The bacterial DNA was then extracted and.....................?
When this DNA was transferred to a test tube, it settled at a.........point in the tube.
The bacteria was then washed and incorperated into another medium containing what isotope?
How many more times was the bacteria allowed to divide?
The extracts of this DNA were shown to have a...........................
Where did the extracts of the second generation DNA settle in the test tube?
DNA determines the.................of a protein.
About how many amino acids are there?
Codes that do not code for amino acids have been called................
What is the portion of DNA which codes for a whole polypeptitde called?
What are three bases coding for an amino acid is called?
These are...............
What is one type of RNA?
What is one type of RNA?
What is one type of RNA?
What are the two main processes involved in making a protein?
DNA does not leave the..............
Where is mRNA copied from?
Which enzyme links to the DNA at the beginning of the sequence to be copied?
How many of the DNA strands acts as a template against which a matching mRNA can be formed?
What align themeselves opposite the DNA strand?
What is the complementary base for cytosine?
What is the complementary base for guanine?
What is the complementary base for thymine?
What is the complementary base for adenine?
The mRNA molecule carries complementary..............
The mRNA carries the DNA code out of the nucleus through a.......................to the.......................
It then attaches itself to a..........................
What does this consist of?
What carries amino acids to the ribosomes?
What is the specific amino acid determined by?
What is required for the specific amino acid to attach itself to the tRNA?
What is this process called?
How many sub-units is a ribosome made from?
How many sites for the attachment of tRNA does the smaller sub-unit have?
What does the ribosome hold together during translation?
When two tRNA molecules are attached to the ribosome, what is formed between the amino acids connected to the tRNA?
The first tRNA molecule............the site.
Then the ribosome moves along the..............strand.
Translation by ribosomes allows the assembly of amino acids into......................according to the original DNA code.
What catalyses peptide bond formation between an amino acid on one tRNA and the growing polypeptide chain on the other tRNA?
What is a group of ribosomes moving along one after the other called?
Where does meiosis take place?
The division process that takes place in meiosis II is identical to.........
What is the first stage of meiosis I called?
In this stage, the chromosomes become........
They then split into two.........
The centrioles (when present) move to..........
What radiate from the centrioles?
What do these form?
What does this result in?
The parental and maternal chromosomes associate in their..................
What is each pair called?
How many strands does a bivalent consist of?
Chromatids repel each other but are joined at points called............
This allows the the chromatids to...............and..................with a different but equivalent chromatid.
The swapping of pieces of chromosomes is called...................
What does this cause?
At the end of this stage what disintergrates?
What disappears?
What are the two types of allele?
What do homologous chromosomes carry?
What is the next phase of meiosis I?
In this stage, where do the homologous chromosomes align themeselves?
What two things cause new genetic combinations?
What is the next phase of meiosis I called?
During this phase, the chromosomes in each bivalent.................
Each pole receives...........of each homologous pair?
What reforms around each group of haploid chromosomes?
What is the last stage of meiosis I?
In animal cells, what process occurs?
What is this?
Usually, the chromosomes stay in their.....................
What is the first stage of meiosis II?
What is the next stage of meiosis II?
Where does the spindle fibre attach itself to on a chromosome?
What is the next stage of meiosis II?
What is the last phase of meiosis II?
The spindle............
What reforms?
What else takes place?
When two gametes join together during fertilsation, the zygote formed is.......................
In addition to halving the number of chromosomes, meiosis causes....................
What two events during meiosis produce genetic variation?
During sexual reproduction, the..................of one parent is mixed with another.

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