bio

In humans, energy stored in food is converted into ______ to perform work by the cells.

ATP

Which of the following monomers is correctly matched with its polymer?

Amino acid—protein

Which is an example of potential energy?

An apple of stored energy-rich macromolecules

Which of the following is an organic molecule?

C6H12O6 Correct NaCl CaCO3 H2O

Mitochondria and chloroplasts are the other organelles besides the nucleus that contain:

DNA.

Which of the following is a passive mechanism used to move materials into and out of the cell?

Facilitated diffusion

Organic molecules contain hydrogen and carbon atoms. How many bonds can form with each carbon atom?

Four

Egg whites consist primarily of water and the protein albumin. When you fry an egg, why does the egg white turn from clear to white?

The protein becomes denatured.

The sub-atomic particle with a positive charge is _____.

a proton

A type of transport of a solute across a membrane, up its concentration gradient, using protein carriers driven by the expenditure of chemical energy is known as

active transport.

When two atoms share a pair of electrons, the bonding is referred to as:

covalent.

It is thought that the oldest stage of cellular respiration from an evolutionary perspective is

glycolysis.

Cellular respiration is a process that

harvests the potential energy found in the chemical bonds of organic molecules.

Macromolecules are broken down to monomers in ___

hydrolysis reactions.

Monomers are linked together by removing a ______ from one monomer, and a ______ from another monomer

hydroxyl group; hydrogen

The base unit of fluid volume in the metric system is the

liter

To convert a larger unit of measure to a smaller one (grams to milligrams for example) you would ____ a factor.

multiply by

The appearance of cancerous cells differs from normal cells. If you were to view cancerous cells under the microscope, you would notice enlarged __________.

nuclei

The negative logarithm of the hydrogen ion concentration in the solution is referred to as:

pH

in a biochemical reaction, the energy of activation is the amount of energy

required to start a reaction.

In an enzyme-catalyzed reaction, the reactant is called the

substrate

Energy is defined as

the capacity to do work

Which of the following statements about mitochondria and chloroplasts provides support for the endosymbiotic theory?

they have their own genomes.

Lipids are different from other nutrient classes in that they __________.

will not combine with water

If a specimen was being viewed using a 100x objective and 10x oculars, what would be the total magnification?

1000x

If a specimen was being viewed using a 20x objective lens and 10x ocular lens, what would be the total magnification?

200x

You are studying an enzyme-catalyzed reaction that induces a particular cellular activity in the lab. If you wanted to slow down that particular cellular activity by controlling the enzyme, what could you do?

Decrease the temperature of the incubator where the cells are growing

The plasma membrane regulates the transport of materials in and out of the cell. What process would be used to move a noncharged molecule across the membrane?

Diffusion

Which of the following is responsible for the storage of extra bile, used to aid in the digestion of fats?

Gallbladder

Which of the following is the correct sequence of events in cellular respiration?

Glycolysis → preparatory reaction → citric acid cycle → electron transport chain