Exam 3: Cell Structure and Function

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The concentration of ________ determines the osmotic pressure of a solution.

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Which of the following is a concept of the cell theory?

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During transcription, a sequence of three nitrogenous bases along the new mRNA strand represents a(n)________ that is complementary to the corresponding triplet along the gene.

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Looking at a tissue through a microscope, you notice that all of the cells along the free surface of the tissue have microvilli along the free edges of the cells. This would tell you that this tissue has what function?

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Before a cell can divide by mitosis, which of the following must occur?

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Peroxisomes are most closely related to

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One function of the nucleolus is to assemble

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When a protein is synthesized on fixed ribosomes, it is threaded into the lumen of which structure(s)?

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Cilia are found

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The process of binding a specific molecule and then bringing it into the cell in a vesicle is called

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Structurally, the plasma membrane

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Translation takes place on the

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Which of these is an example of carrier-mediated transport that does not require energy input?

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Which of the following is a function of the membrane proteins called channel proteins?

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When genes are switched off to allow a cell to restrict or specialize its functions, the process is called

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The movement of water across a membrane from an area of higher water (lower solute)concentration to an area of lower water (higher solute)concentration is known as

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When a person receives intravenous fluids to help build up blood volume, why could it be detrimental to administer a hypotonic solution?

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Membrane-bound proteins that allow identification of a cell as "self" or "nonself" are called ________ proteins.

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The folds of the internal membrane within mitochondria are called

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  Figure 3-6 Nucleus Use Figure 3-6 to answer the following question: -Identify the component of the nucleus in which rRNA synthesis and the assembly of ribosomal subunits occur. Figure 3-6 Nucleus Use Figure 3-6 to answer the following question: -Identify the component of the nucleus in which rRNA synthesis and the assembly of ribosomal subunits occur.

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