Many Proteins Interact with DNA at Physiological PH Because

question 20

Multiple Choice

Many proteins interact with DNA at physiological pH because:

• A) proteins are naturally attracted to DNA regardless of the pH.
• B) the negatively charged DNA is electrostatically attracted to positively charged regions on proteins.
• C) the positively charged DNA is electrostatically attracted to negatively charged regions on proteins.
• D) proteins and DNA interact using mainly hydrophobic interactions.
• E) both proteins and DNA are at their isoelectric points at physiological pH and tend to aggregate.

Recognize the conditions under which a firm maximizes profit, minimizes loss, or breaks even, including the role of average total cost (ATC), marginal cost (MC), and marginal revenue (MR).

Analyze the implications of operating at a profit, loss, or break-even point for a firm in a perfectly competitive market.

Understand the concept of economic profit versus accounting profit.

Determine actions a firm should take based on its average variable cost (AVC), average fixed cost (AFC), and market price conditions.

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Definitions:

Seven

A number; not a biological science key-term.

Organs

Structures consisting of different tissues that perform specific functions within an organism.

Anus

Outlet of the digestive tube.

Mouth

In humans, organ of the digestive tract where food is chewed and mixed with saliva.