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what is the name of the positively charged particle in the center of an atom?
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a. proton
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b. nucleus
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c. electron
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d. neutron
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Describe the iron sulfide hypothesis and the lipid membrane hypothesis.

All individuals have two alleles for a given trait. according to mendel's these alleles are passed down one each from both mother and father.

Select the correct answer. which mutation is harmful to the organism? a. a mutation allowing moths to camouflage better on blackened tree bark b. a mutation making staphylococcus aureus resistant to the antibiotic methicillin c. a mutation inhibiting human immunodeficiency virus from attaching to and entering the cell d. a mutation causing uncontrolled cell division e. a mutation giving plant leaves a bitter taste to discourage herbivores from eating them