Ques:Answer the following question given this paragraph: Sequencing the human genome has increased our knowledge of genetic disorders. Genetic disorders are diseases caused by mutations. Many genetic disorders are caused by mutations in a single gene. Others are caused by abnormal numbers of chromosomes. Q: Genetic disorders are diseases caused by what? Choices: - lesions - environment - traits - mutations A:

Ans:mutations
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Ques:Answer the following question given this paragraph: The epidermis also contains melanocytes , which are cells that produce melanin. Melanin is the brownish pigment that gives skin much of its color. Everyone has about the same number of melanocytes, but the melanocytes of people with darker skin produce more melanin. The amount of melanin produced is determined by heredity and exposure to UV light, which increases melanin output. Exposure to UV light also stimulates the skin to produce vitamin D . Because melanin blocks UV light from penetrating the skin, people with darker skin may be at greater risk of vitamin D deficiency. Q: People with which skin type run a greater risk of vitamin d deficiency? Choices: - lighter skin - brighter skin - weaker skin - darker skin A:

Ans:darker skin
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Ques:Answer the following question given this paragraph: Beta () decay is a more complicated process. Unlike the -emission, which simply expels a particle, the -emission involves the transformation of a neutron in the nucleus to a proton and an electron. The electron is then ejected from the nucleus. In the process, the atomic number increases by one while the atomic weight stays the same. As is the case with -emissions, -emissions are often accompanied by -radiation. Q: How does the atomic number change during beta emission? Choices: - stays the same - increases by two - decreases by one - increases by one A:

Ans:increases by one
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Ques:Answer the following question given this paragraph: Most arthropods are insects. The phylum also includes spiders, centipedes, and crustaceans. Q: Most arthropods are insects. the phylum also includes spiders, centipedes, and what? Choices: - amphibians - crystals - coral - crustaceans A:

Ans:
crustaceans
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