fundamental of bio 1 lect Quiz 2 wrong answers

Imagine that organisms consisted of 70-95% alcohol instead of 70-95% water. Alcohol's specific heat is about half that of water. How would living things be different?

Systems for temperature regulation would have to be much more efficient.

Chemical equilibrium is reached when _____.

forward and reverse reaction rates are equal

What is generally true about essential elements and living organisms

Although all forms of life require iron, other elements are required only by certain species.

Which of the following molecules has a carboxyl functional group?

R-COOH

Which of the following examples best describes a unique functional property of the carboxyl group?

The covalent bond between oxygen and hydrogen is so polar that hydrogen ions tend to dissociate from oxygen reversibly.

Which statement is true about chemical reactions?

They involve the making and breaking of chemical bonds.

Ethanol, propanol, and methanol are three simple alcohols. They can be grouped together because they __________.

share the same functional group: a hydroxyl

a hydrogen bond _____

is a weak chemical bond

Which of the following functional groups is associated with a release of energy when removed from the carbon skeleton with water?

phosphate group

Pharmaceutical researchers are often interested in blocking particular receptor proteins on cell surfaces. What chemical property of a molecule would be most important for this type of application?

the molecules shape

Cells are surrounded by water, with which they are mostly filled. Which of the following occurs as a result

waste products produced by cell metabolism can be easily removed, the temperature of living things tends to change relatively slowly, a variety of nutrient molecules is readily available as dissolved solute