2853372
Descripción
Test por Courtney Baxter, actualizado hace más de 1 año
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Creado por Courtney Baxter
hace más de 9 años
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Pregunta 1
Pregunta
What bases are complementary bases?
Respuesta
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A+T C+G
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A+C G+T
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A+G C+T
Pregunta 2
Pregunta
How many chromosomes are in the human body?
Respuesta
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23
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46 in 23 pairs
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36
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52 in 36 pairs
Pregunta 3
Pregunta
How many chromosomes do gametes have?
Respuesta
-
23
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46
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52
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13
Pregunta 4
Pregunta
What is a gene?
Respuesta
-
something you wear
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a part of a cell
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a section of DNA
Pregunta 5
Pregunta
What makes one gene different to another?
Respuesta
-
the order of bases and the length of the DNA strand
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the order of bases and the shape of the DNA
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the shape of the DNA and the length of the DNA strand
Pregunta 6
Pregunta
What is the term used to describe the order of bases along the DNA strand?
Respuesta
-
Base Order
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Genetic Code
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Genetic Order
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Base Code
Pregunta 7
Pregunta
What are proteins?
Respuesta
-
proteins are the structural materials that build up your cells and tissues, most hormones and enzymes
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proteins are another name for chromosomes
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proteins are genes that don't have complementary base pairing
Pregunta 8
Pregunta
In what year did Johannes Friedrich Miescher discover DNA?
Respuesta
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1869
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1896
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1986
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1698
Pregunta 9
Pregunta
Who discovered the components and arrangement of the nucleotides?
Respuesta
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Phoebus Levene
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Francis Crick
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Sir William Henery Bragg
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Erwin Chargaff
Pregunta 10
Pregunta
Who proved in 1943 that DNA does hold the genetic code?
Respuesta
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Oswald Avery
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Erwin Chargaff
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Rosalind Franklin
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Sir William Henry Bragg
Pregunta 11
Pregunta
What rules were created by Erwin Chargaff in the 1940's?
Respuesta
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-nucleotides are not arranged in the same order in all species -in all species, the amounts of adenine and thymine in the DNA are always similar, as are the amounts of guanine and cytosine. -the amount of adenine plus guanine is always equal to the amount of thymine plus cytosine
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-nucleotides are not arranged in the same order in all species -in all species, the amounts of adenine and thymine in the DNA are always similar, as are the amounts of guanine and cytosine. -each genetic code contains 'instructions' for a specific protein
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-each person has 46 chromosomes, in 23 pairs -in all species, the amounts of adenine and thymine in the DNA are always similar, as are the amounts of guanine and cytosine. -the amount of adenine plus guanine is always equal to the amount of thymine plus cytosine
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-the amount of adenine plus guanine is always equal to the amount of thymine plus cytosine -DNA determines characteristics -each genetic code contains 'instructions' for a specific protein
Pregunta 12
Pregunta
What was created in 1913-14 by Sir William Bragg and his son Sir William Lawrence?
Respuesta
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X-ray crystallography
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The first DNA structure (fake)
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The first drawing of DNA
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An artificial gene
Pregunta 13
Pregunta
In what time period did Rosalind Franklin and her partner Maurice Wilkins created a X-ray crystallograph of DNA, discovering the double helix structure?
Respuesta
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early 1950's
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late 1950's
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early 1960's
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late 1960's
Pregunta 14
Pregunta
Who refined the DNA structure and published it in 1951?
Respuesta
-
James Watson and Francis Crick
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Rosalind Franklin and Maurice Wilkins
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Maurice Wilkins and James Watson
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Francis Crick and Rosalind Franklin
Pregunta 15
Pregunta
Who won the joint nobel prize in 1965?
Respuesta
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Rosalind Franklin, James Watson, Francis Crick and Maurice Wilkins
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Rosalind Franklin, James Watson and Maurice Wilkins
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James Watson, Francis Crick and Maurice Wilkins
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Rosalind Franklin, James Watson, Oswald Avery and Francis Crick
Pregunta 16
Pregunta
What year was the book, "The Double Helix" by James Watson, released?
Respuesta
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1968
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1869
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1986
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1896
Pregunta 17
Pregunta
What is the term used to describe the copying of DNA?
Respuesta
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copying
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doubling
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replication
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imprinting
Pregunta 18
Pregunta
What happens in the process of replication?
Respuesta
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1. the strands of the double helix separate from each other, much like a zip unzipping, leaving the bases exposed
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2. the exposed nucleotides pair with the exposed bases
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3. the sugar and phosphate molecules bond with neighbouring nucleotides, creating two identical DNA strands
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1. the DNA strand is split in half horizontally
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2. it is then separated in half, much like a zip unzipping, exposing the bases
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3. the bases then replicate and attach to the exposed bases
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4. the DNA strands then 'rezip', creating two identical DNA strands
Pregunta 19
Pregunta
Mitosis produces gametes that have half the number of chromosomes of the parent cell
Respuesta
- True
- False
Pregunta 20
Pregunta
Meiosis produces gametes that have half the number of chromosomes of the parent cell
Respuesta
- True
- False
Pregunta 21
Pregunta
What are network fibres?
Respuesta
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the strands that pull the chromosomes to either side of the cell
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underground wires that control the internet and phone lines
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coils found inside a nucleus
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another name for chromosome
Pregunta 22
Pregunta
Diploid means half the amount of chromosomes within an organism
Respuesta
- True
- False
Pregunta 23
Pregunta
In gametes there is a haploid amount of chromosomes
Respuesta
- True
- False
Pregunta 24
Pregunta
What is the term used to describe non-sex chromosomes?
Respuesta
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autosomes
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non-sex chromosomes
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normal chromosomes
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hapisomes
Pregunta 25
Pregunta
homologus pairs are pairs of chromosomes
Respuesta
- True
- False
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