| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 2.93 |
| Score | 0% | 59% |
Which of the following is the correct order for types of radiation from lowest to highest frequency?
microwaves → radio waves → visible light |
|
radio waves → visible light → gamma rays |
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infrared waves → microwaves → ultraviolet light |
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visible light → ultraviolet light → radio waves |
The electromagnetic spectrum covers all possible wavelengths and frequencies of radiation. From lowest frequency (longest wavelength) to highest frequency (shortest wavelength) radiation: radio waves → microwaves → infrared waves → visible light → ultraviolet light → X-rays → gamma rays.
Within DNA, a variety of a particular gene is called a(n):
chromosome |
|
heterozygous |
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homozygous |
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allele |
The gene is the base unit of inheritance and is contained within DNA. A gene may come in several varieties (alleles) and there are a pair of alleles for every gene. If the alleles are alike, a person is homozygous for that gene. If the alleles are different, heterozygous.
In cell biology, where does DNA replication take place?
cytoplasm |
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nucleus |
|
Golgi apparatus |
|
mitochondria |
The cell nucleus contains the genetic material of the cell and is where DNA replication takes place.
Blood pressure is generally highest in which of the following?
arteries |
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veins |
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capillaries |
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heart |
Arteries are thick-walled because they carry oxygenated blood at high pressure, veins are comparatively thin-walled as they carry low-pressure deoxygenated blood.
Which of these is matter than cannot be separated into different types of matter by ordinary chemical methods?
molecule |
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compound |
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atom |
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element |
An element is matter than cannot be separated into different types of matter by ordinary chemical methods.