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Bundle for AQA A level Biology Revision tests compilation | everything you need| verified
Bundle for AQA A level Biology Revision tests compilation | everything you need| verified
[Mostrar más]Bundle for AQA A level Biology Revision tests compilation | everything you need| verified
[Mostrar más]Describe the role of a ribosome in the production of a polypeptide. /3 - 1. mRNA binds to ribosome; 
2. Idea of TWO codons/binding sites; 
3. tRNA with ANTICODONS binds; 
4. (Catalyses) formation of PEPTIDE bond between AMINO ACIDS (held by tRNA molecules); 
5. Moves along (mRNA to the next 
codon);...
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Añadir al carritoDescribe the role of a ribosome in the production of a polypeptide. /3 - 1. mRNA binds to ribosome; 
2. Idea of TWO codons/binding sites; 
3. tRNA with ANTICODONS binds; 
4. (Catalyses) formation of PEPTIDE bond between AMINO ACIDS (held by tRNA molecules); 
5. Moves along (mRNA to the next 
codon);...
Structure of Nucleus. - 1. Nuclear envelope: double membrane surrounding nucleus, outer 
membrane continuous with the (R)ER of the cell. 
2. Nuclear pores: allow the passage of larger molecules, such as mRNA, out of the nucleus. 
3. Nucleoplasm: granular, jelly-like material making up the bulk of th...
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Añadir al carritoStructure of Nucleus. - 1. Nuclear envelope: double membrane surrounding nucleus, outer 
membrane continuous with the (R)ER of the cell. 
2. Nuclear pores: allow the passage of larger molecules, such as mRNA, out of the nucleus. 
3. Nucleoplasm: granular, jelly-like material making up the bulk of th...
Amino Acid - A monomer that will join with other amino acids to form a protein 
Dipeptide - Two amino acids bonded together via a peptide bond 
Polypeptide - Many amino acids bonded together via peptide bonds 
Protein - A combination of polypeptides 
Amine Group - -NH2, a basic group where the amino...
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Añadir al carritoAmino Acid - A monomer that will join with other amino acids to form a protein 
Dipeptide - Two amino acids bonded together via a peptide bond 
Polypeptide - Many amino acids bonded together via peptide bonds 
Protein - A combination of polypeptides 
Amine Group - -NH2, a basic group where the amino...
How do biological molecules provide evidence for evolution? - They all have similar molecules and 
use the same amino acids and DNA. 
What are monomers of carbohydrates called? - Monosaccharides. 
Beta Glucose - 
Alpha glucose - 
Glucose formula - C₆H₁₂O₆ 
Name of the bond between monosacc...
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Añadir al carritoHow do biological molecules provide evidence for evolution? - They all have similar molecules and 
use the same amino acids and DNA. 
What are monomers of carbohydrates called? - Monosaccharides. 
Beta Glucose - 
Alpha glucose - 
Glucose formula - C₆H₁₂O₆ 
Name of the bond between monosacc...
What are monomers? - Monomers are *small units* which are the components of larger molecules. 
What are polymers? - Polymers are molecules made from *many monomers* joined together. 
What are examples of monomers? - *Monosaccharides, amino acids* and *nucleotides* 
What are examples of polymers? - *...
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Añadir al carritoWhat are monomers? - Monomers are *small units* which are the components of larger molecules. 
What are polymers? - Polymers are molecules made from *many monomers* joined together. 
What are examples of monomers? - *Monosaccharides, amino acids* and *nucleotides* 
What are examples of polymers? - *...
Monomers - Small basic molecular units 
Examples of monomers - monosaccharides, amino acids and nucleotides 
Polymers - Large complex molecules composed of long chains of monomers joined together 
Examples of polymers - Carbohydrates, proteins and nucleic acids 
What type of sugar is glucose? - Hexo...
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Añadir al carritoMonomers - Small basic molecular units 
Examples of monomers - monosaccharides, amino acids and nucleotides 
Polymers - Large complex molecules composed of long chains of monomers joined together 
Examples of polymers - Carbohydrates, proteins and nucleic acids 
What type of sugar is glucose? - Hexo...
large molecules often contain carbon. why? - they can readily form bonds with other carbon atoms. 
this forms a 'backbone'. other atoms can then attach. 
describe benedicts test for reducing sugars - add equal volumes of the sugar sample and benedicts 
reagent. 
heat the mixture in a water bath fo...
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Añadir al carritolarge molecules often contain carbon. why? - they can readily form bonds with other carbon atoms. 
this forms a 'backbone'. other atoms can then attach. 
describe benedicts test for reducing sugars - add equal volumes of the sugar sample and benedicts 
reagent. 
heat the mixture in a water bath fo...
what is RNA? - ribonucleic acid 
MRNA and TRNA 
single stranded 
shorter 
AU CG 
what are biological molecules? - molecules made and used by living organisms eg. lipids, carbs, DNA, 
AT, water, inorganic ions 
what are the functions of carbohydrates? - -energy source (respiration) 
-energy store (st...
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Añadir al carritowhat is RNA? - ribonucleic acid 
MRNA and TRNA 
single stranded 
shorter 
AU CG 
what are biological molecules? - molecules made and used by living organisms eg. lipids, carbs, DNA, 
AT, water, inorganic ions 
what are the functions of carbohydrates? - -energy source (respiration) 
-energy store (st...
Describe how you would use a biochemical test to show that a solution contained a non-reducing sugar, 
such as sucrose. [3] - ,first reducing sugars test; boil with dilute HCl acid then Neutralise with NaHCǑ, 
add benedict and heat to 95 degrees C brick red ppt forms if reducing sugar is present 
D...
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Añadir al carritoDescribe how you would use a biochemical test to show that a solution contained a non-reducing sugar, 
such as sucrose. [3] - ,first reducing sugars test; boil with dilute HCl acid then Neutralise with NaHCǑ, 
add benedict and heat to 95 degrees C brick red ppt forms if reducing sugar is present 
D...
What are the three ways a pathogen can damage hosts cells? - 1) rupturing them to release nutrients 
inside them 
2) breaking down nutrients inside the cell for their own use. This starves and eventually kills the cell. 
3) replicating inside the cells and bursting them when they're released 
What ...
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Añadir al carritoWhat are the three ways a pathogen can damage hosts cells? - 1) rupturing them to release nutrients 
inside them 
2) breaking down nutrients inside the cell for their own use. This starves and eventually kills the cell. 
3) replicating inside the cells and bursting them when they're released 
What ...
the krebs cycle takes place in the _______ of the ___________ - matrix mitochondria 
epistasis - arises when the allele of one gene affects or masks the expression of another in the 
phenotype 
autosome - a chromosome that is not a sex chromosome 
biodiversity - the range and variety of genes, speci...
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Añadir al carritothe krebs cycle takes place in the _______ of the ___________ - matrix mitochondria 
epistasis - arises when the allele of one gene affects or masks the expression of another in the 
phenotype 
autosome - a chromosome that is not a sex chromosome 
biodiversity - the range and variety of genes, speci...
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