Edexcel AS Biology Unit 1 (40 Questions)

A quiz that covers the main topics for Edexcel Unit 1 AS Biology such as:

  • Heart
  • Blood Vessels
  • Cardiac Cycle
  • Atherosclerosis
  • Carbohydrates
  • Proteins
  • Lipids
  • DNA 
  • Protein synthesis
  • Cystic Fibrosis
  • Enzymes
  • Prenatal screening
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  • Created by: Holly
  • Created on: 18-10-11 17:21
Why do only small animals have an open circulatory system?
Because open systems rely on diffusion and diffusion is only fast enough for small organisms
1 of 32
What happens during Atrial systole?
The atria contract forcing blood into the ventricles
2 of 32
What prevents the blood flowing back from the ventricles to the atriums?
Atrioventricular valves
3 of 32
Where would you find the Sino-Atrial node?
The right atrium
4 of 32
What part of the Artery does the blood pass through?
Lumen
5 of 32
What do platelets release during the start of a blood clot?
Thromboplastin
6 of 32
In the blood clotting process how many enzymes are used?
2
7 of 32
What does Ischaemia mean?
Cells are not receiving enough oxygen
8 of 32
What do white blood cells turn into in order to ingest debris during atherosclerosis?
Macrophage
9 of 32
What makes the macrophages turn into foam cells?
They ingest too much cholesterol
10 of 32
If plaque was in the vessels supplying blood to the brain it could lead to..
A stroke
11 of 32
What are the main components of Carbohydrates?
Carbon, Hydrogen, Oxygen
12 of 32
What is the difference between alpha and beta glucose?
The OH and H are upside down on the carbon 1 bond
13 of 32
What is the name of the reactions that joins two carbohydrates together?
Condensation
14 of 32
The bond formed in a Triglyceride is a..
Ester bond
15 of 32
What is the difference between saturated and unsaturated lipids?
Unsaturated has got one or more double carbon bond and saturated has none
16 of 32
What is the primary structure of a Protein?
The sequence of amino acids
17 of 32
At what stage does the amino acids form a 3D structure?
Tertiary
18 of 32
What is the main use of cholesterol?
It helps build cell membranes
19 of 32
What do saturated fats make your liver produce?
LDL
20 of 32
What change of diet could help lower cholesterol?
Eating more unsaturated fats
21 of 32
What is an anabolic reaction?
Reaction that builds up molecules
22 of 32
What is the phrase used to describe the number of substrate molecules transformed by one enzyme molecule per minute?
Turnover number
23 of 32
What does the CFTR protein do?
Controls the stickness of the mucus
24 of 32
Genes are instructions for proteins?
True
25 of 32
What is a codon?
A triplet that codes to start or stop the production of proteins
26 of 32
What type of bonds are there in-between the bases of DNA?
Hydrogen
27 of 32
What isn't present in RNA that is present in DNA?
Thymine
28 of 32
Transcription occurs in the ribosome?
False
29 of 32
Cystic Fibrosis effects which systems?
Respiratory, Digestive and Reproductive only
30 of 32
Preimplantion is..
A test before the embryo is placed in the woman
31 of 32
What is somatic gene therapy?
Changing alleles in body cells
32 of 32

Other cards in this set

Card 2

Front

What happens during Atrial systole?

Back

The atria contract forcing blood into the ventricles

Card 3

Front

What prevents the blood flowing back from the ventricles to the atriums?

Back

Preview of the front of card 3

Card 4

Front

Where would you find the Sino-Atrial node?

Back

Preview of the front of card 4

Card 5

Front

What part of the Artery does the blood pass through?

Back

Preview of the front of card 5
View more cards

Comments

affy

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its ite it would b better if u could add more questions coz its a bit too short but overall its good

Rebecca

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73% ! :) thankyou this quiz was good. I learnt alot of things

Paige Gaulton

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Great quiz but im sure the answer for question 24 is wrong? Phosolipids are made up of 2 fatty acids, a phosphate and a glycerol. Also 35 I believe has an incorrect answer because transcription happens in the nucleus, whilst translation happens on the ribosome in the cytoplasm. Thanks for the quiz :)

mmm23

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OMDAYS!! TRANSCRIPTION happens in the nucleus not ribosome, TRANSLATION happens in the ribosome which is found in the cytoplasm!! get your facts straight! YOUR GIVING PEOPLE THE WRONG INFORMATION..!!

Kelly Bakuaya

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78%

Holly

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mmm23

Sorry but I added so many questions I forgot to change the default from true to false.. I have changed it now..

Holly

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Paige Gaulton 

Thanks for pointing that out, sorry I added so many questions I made a few mistakes. I have changed it now, thank you :)

faryal

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90%.... YAAAY

Zoe

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95! Thank you this is a great quiz :)

Jessica Eden

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Brilliant quiz, learnt a few things that I didn't come across before in this topic :) thank you 

lee

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this test is for coons. 90%

shara

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57% :O Wow.. i NEED to start studying NOW!

Thanks for the quiz :)

Hannah Gordon

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great quiz! covers a good range of the 2 topics 82% yay!

Tawsif Patel

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You don't need to know about Sino-atrial node in edexcel Unit 1 biology. Also, it strictly says in the spec that you don't have to know about beta glucose.

Tawsif Patel

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Question 31 

What is a codon?

  • Its a base of dna
  • A triplet that codes to start or stop the production of proteins
  • The part of dna that codes for proteins

A codon is a triplet of bases on DNA or RNA. They don't specifically have to code for the start or the end of a polypeptide chain. The codons that start and stop the chain are called start and stop codons. Please modify this question as all the options are wrong. Otherwise, its a very good quiz.

grace

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Really great quiz well done :)

Josh Miller

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Macrophages are a type of White Blood Cell, they do not turn into them. Please get the facts correct.

Andyman3001

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Tawsif Patel has got it spot-on. A codon isn't just start/stop, but any triplet of bases coding for a particular amino acid.

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