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Transport and Channel Proteins

What is the difference between a transport protein and a channel protein?

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Lost in Translation

A scientist translates an enzyme from pre-processed cell mRNA in a test tube (in vitro). However, the in vitro enzyme is found to be inactive compared to the extracted in vivo enzyme from a live cell culture. Which statement is the LEAST likely explanation for this phenomenon?

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Bacterial DNA

Bacterial DNA is protected from the action of restriction endonucleases by:

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Fine-Touch Differentiation

The epidermis is the outermost layer of the integumentary system and is comprised of four types of cells. Which of the cell types is associated with fine-touch differentiation necessary for detecting shapes and texture?

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Electron Transport Chain

Which statement best describes the overall steps of the Electron Transport Chain in animal cells?

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Allergic To Oxygen

Bacteria that are unable to live in the presence of oxygen are referred to as:

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Secretion of Glucocorticoids

Which of the following functions would you NOT expect to result from the secretion of glucocorticoids (i.e. cortisol) by the adrenal glands?

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Nodes of Paul Revere

In the vertebrate nervous system, the term “Node of Ranvier” refers to:

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Trypsinogen Conversion

Trypsin is a proteolytic enzyme secreted by the pancreas in an inactive form (trypsinogen). Trypsinogen can be converted to trypsin by the action of:

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Characteristics of Histones

Histones are a kind of protein that is known to play a very important role in packaging DNA into chromatin. What of the following characteristics about histones is true?

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