Q: What exactly happens during rna translation? Read this paragraph and choose the correct option from the provided answers: Translation is the RNA protein part of the central dogma. It occurs at a ribosome. During translation, a protein is synthesized using the codons in mRNA as a guide. All three types of RNA play a role in translation. Choices: - carbohydrate is synthesized - membrane is synthesized - chromosome is synthesized - protein is synthesized A:
protein is synthesized
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Q: What are chemical bonds between atoms of nonmetals that share valence electrons called? Read this paragraph and choose the correct option from the provided answers: Covalent bonds are chemical bonds between atoms of nonmetals that share valence electrons. In some covalent bonds, electrons are not shared equally between the two atoms. These are called polar covalent bonds. The Figure below shows the polar bonds in a water molecule (H 2 O). The oxygen atom attracts the shared electrons more strongly than the hydrogen atoms do because the nucleus of the oxygen atom has more positively charged protons. As a result, the oxygen atom becomes slightly negative in charge, and the hydrogen atoms become slightly positive in charge. For another example of polar bonds, see the video at this URL: http://www. youtube. com/watch?v=1lnjg81daBs. Choices: - electron bonds - ionic bonds - gravitational bonds - covalent bonds A:
covalent bonds
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Q: What type of bond forms by unpaired electrons from two atoms "matching up"? Read this paragraph and choose the correct option from the provided answers: You have learned that a covalent bond forms when the electron clouds of two atoms overlap with each other. In a simple H 2 molecule, the single electron in each atom becomes attracted to the nucleus of the other atom in the molecule as the atoms come closer together. An optimum distance, equal to the bond length, is eventually attained, and the potential energy reaches a minimum. A stable, single covalent bond has formed between the two hydrogen atoms. Other covalent bonds form in the same way as unpaired electrons from two atoms "match up" to form the bond. In a fluorine atom, there is an unpaired electron in one of the 2p orbitals. When a F 2 molecule forms, the 2p orbitals from each of the two atoms overlap to produce the FF covalent bond. The overlapping orbitals do not have to be of the same type. In a molecule of HF, the 1s orbital of the hydrogen atom overlaps with the 2p orbital of the fluorine atom (see Figure below ). Choices: - reactive bond - accretion bond - magnetic bond - covalent bond A:
covalent bond
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Q: The size of the solute particles determines the rate of what? Read this paragraph and choose the correct option from the provided answers: The rate at which a solute dissolves depends upon the size of the solute particles. Dissolving is a surface phenomenon since it depends on solvent molecules colliding with the outer surface of the solute. A given quantity of solute dissolves faster when it is ground into small particles than if it is in the form of a large chunk because more surface area is exposed. The packet of granulated sugar exposes far more surface area to the solvent and dissolves more quickly than the sugar cube. Choices: - merging - extracting - solution - dissolving A:
dissolving
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