| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.34 |
| Score | 0% | 67% |
Within DNA, a variety of a particular gene is called a(n):
chromosome |
|
homozygous |
|
allele |
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heterozygous |
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.
A biological community of interacting organisms and their physical environment is known as:
community |
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population |
|
biome |
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ecosystem |
An ecosystem is a biological community of interacting organisms and their physical environment. This includes both the biotic (living) and abiotic (non-living).
Which of the following is not true of light waves?
travel faster than sound waves |
|
are mechanical waves |
|
are electromagnetic waves |
|
can travel through a vacuum |
Unlike mechanical sound waves that require a physical medium for propagation, light waves are electromagnetic and can travel through empty space. Light waves are also much faster, travelling at 186,000 m/s vs. 343 m/s for sound waves.
__________ is caused by a lack of Vitamin C.
anemia |
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scurvy |
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shingles |
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diabetes |
Scurvy is a difficiency disease caused by a lack of Vitamin C in the diet.
The connective tissue that connects bones to other bones at joints is called:
tendons |
|
knuckles |
|
cartilage |
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ligaments |
Tough fibrous cords of connective tissue called tendons connect muscles to the skeleton while another type of connective tissue called ligaments connect bones to other bones at joints (elbow, knee, fingers, spinal column).