Shannon Bradner
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Year 9 Biology Quiz sobre Triple Biology Test - DNA, enzymes, respiration, protein synthesis, criado por Shannon Bradner em 10-05-2019.

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Shannon Bradner
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Triple Biology Test - DNA, enzymes, respiration, protein synthesis

Questão 1 de 8

1

What are the correct base pairings in DNA?

Selecione uma das seguintes:

  • A - C, G - T

  • C - G, A - T

  • T - C, G - A

Explicação

Questão 2 de 8

1

Tick all that apply about DNA.

Selecione uma ou mais das seguintes:

  • It is a polymer.

  • It has 6 different possible base pairing combinations.

  • It is made of nucleotides.

  • It has a triple helix structure.

  • DNA is inside the chromsomes which are in the gene.

  • DNA is inside the genes which are in the chromosomes.

Explicação

Questão 3 de 8

1

Preencha os espaços em branco para completar o texto.

Each base in forms links with their pairs on the other strand, keeping the strands wound together.

Complementary pairing also allows and helps synthesis.

Explicação

Questão 4 de 8

1

Selecione das listas do Menu para completar o texto.

Protein synthesis takes place in the ( cytoplasm, nucleus, mitochondria ) and is aided by the ( lysosomes, ribosomes, mitochondria ).

The order of bases in a gene code for a different order of amino acids in a protein. Each amino acid is coded for by a sequence of ( two, three, four ) bases called a ( double, triplet, quadruplet ) code.

A ( shorter, longer ), single strand of DNA (called mRNA) goes through the unzipped DNA and matches each base with their ( opposite, complementary ) pair. This is called ( translation, transcription ).

The mRNA leaves the nucleus and enters the cytoplasm, where the ( ribosomes, mitochondra ) read the ( double, triplet, quadruplet ) codes and form the correct sequence of amino acids, joining them together to make a ( protein, ring ).

Explicação

Questão 5 de 8

1

Enzymes are catalysts. They help to speed up reactions without themselves or getting 'used up'.

Enzymes are and are specific.

The and key method means the substrate can only enter the active site of the enzyme that has been built to break down that substrate.

Carbohydrase (example: ) break down carbohydrates into and simple sugars.
Protease (example: ) break down proteins into amino acids.
Lipase (example: ) break down and oils into fatty acids and .

Arraste e solte para completar o texto.

    biological
    environmental
    pretty cool
    damaging
    exploding
    proteins
    single amino acids
    very
    not very
    lock
    door
    amylase
    starch
    pepsin
    lipids
    fats
    glycerol
    sugar

Explicação

Questão 6 de 8

1

Preencha os espaços em branco para completar o texto.

Enzymes all have optimum pHs, temperatures and .

The optimum means the enzyme is working at its possible efficiency.
Too high or too low of a pH effects the between enzymes and substrates, slowing the rate of reaction.

If an enzyme concentration is increased, eventually the rate of reaction will remain the as all the have been broken down.

If the substrate concentration is increased, eventually the rate of reaction will remain the as all the active sites are .

Explicação

Questão 7 de 8

1

Match the chemical with what they test for and how it is shown.

Ethanol tests for . It has a if it is present and clear if it is not.
Iodine tests for . It is when it is present and if it is not.
Benedict's solution tests for . It is if it is present and if it is not.
Buiret solution tests for . It is if it is present and blue if it is not.

Arraste e solte para completar o texto.

    fats
    starch
    creamy precipitate
    black / purple
    yellow
    reducing sugars
    red
    blue
    protein
    pink

Explicação

Questão 8 de 8

1

Preencha os espaços em branco para completar o texto.

Respiration is the process of energy from the break down of sugar.
The energy transferred be used directly by the cells, so it is used to make .

respiration happens when there is plenty of oxygen available.

Glucose + oxygen -----> carbon dioxide + + energy

respiration produces less . Glucose is broken down to make acid (in animals) or , carbon dioxide and energy (in and fungi).

Explicação

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