1. Compare and contrast epigenetic, Mendelian genetic and Lamarckian theories of inheritance.
2. Discuss how it is possible that in your body, every cell has identical DNA and the same genes, yet these cells may have very different phenotypes and functions throughout the body (for example, in your body, a neuron and cardiac muscle cells have the same genes, yet very different functions and appearances).
1. Compare and contrast epigenetic, Mendelian genetic and Lamarckian theories of inheritance.
2. Discuss how it is possible that in your body, every cell has identical DNA and the same genes, yet these cells may have very different phenotypes and functions throughout the body (for example, in your body, a neuron and cardiac muscle cells have the same genes, yet very different functions and appearances).
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A broken piece of a DNA molecule. |
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Question 21 pts
How many "genetic words" are there in the genetic code formed by combining three DNA bases together?
64 |
32 |
128 |
26 |
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Question 31 pts
What is the shape of a DNA molecule?
A double helix. |
a circle. |
a hexagon. |
a concave surface. |
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Question 41 pts
Which of the following is not one of the DNA bases used by living organisms on Earth?
Adenine. |
Galline. |
Thymine. |
Cytosine. |
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Question 51 pts
What is the genome of an organism?
The longest of its DNA molecules. |
The complete sequence of DNA bases in all its DNA. |
The noncoding parts of the DNA. |
All the genes in an organism's DNA. |
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Question 61 pts
The process by which DNA is copied to be passed on to the next generation of an organism is called:
DNA replication. |
DNA unzipping. |
Cell division. |
Genetic mutation. |
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Question 71 pts
If every cell in your body has exactly the same DNA, why are brain cells different from muscle cells?
Because they are located in different parts of your body. |
Because different types of cells use different pieces of the same DNA. |
Because the noncoding DNA behaves differently in different cell types. |
Because while all cells in your body may have the same DNA, they have different genomes. |
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Question 81 pts
Which kind of extreme environment are psychrophiles able to survive?
Extremely low pressure. |
Extreme heat. |
Extreme cold. |
Extreme acidity. |
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Question 91 pts
What are thermophiles ?
Organisms that live in extremely cold conditions. |
Organisms that live in extremely hot conditions. |
Organisms that live in extremely acidic conditions. |
Organisms that can live in highly radioactive environments. |
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Question 101 pts
What characteristic is the bacterial species Deinococcus Radiodurans known for?
For being discovered on radio antennas. |
For being able to survive high doses of radiation. |
For being able to live inside rocks. |
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