AP Bio

Which list of components characterizes RNA?

Which of the following molecules would contain a polar covalent bond?

Because of the unique properties of water associated with hydrogen bonding, water evaporates from pores on the leaves of the plants and draws up water molecules in a continuous chain from the roots up through the vascular tissues of plants. Which of these groups of terms describes the process and properties of water that explain this?

Hydrolysis is involved in which of the following?

The process by which protein conformation is lost of broken down is

An organic compound that is composed of carbon, hydrogen, and oxygen in a 1 :2 :1 ratio is known as a

Which of the macromolecules below could be structural parts of the cell, enzymes, or involved in cell movement or communication?

The plasma membrane is composed of several different macromolecules. Which macromolecule serves as the fluid interface between the intracellular and extracellular environments?

The partial negative charge at one end of a water molecule is attracted to a partial positive charge of another water molecule. What is this type of attraction called?

Polymers of carbohydrates and proteins are all synthesized from monomers by which of the following processes?

If the pH of a solution is decreased from 7 to 6, it means that the concentration of

Recall the structure of a typical amino acid and how the molecule has two distinct "ends." Which two functional groups are always found in amino acids?

The tremendous variation and unique properties of proteins are most a result of

The molecular formula for glucose is C6H12O6. What would be the molecular formula for a polymer made by lining 10 glucose molecules together by dehydration reactions?

Which of the following pairs of base sequences could form a short stretch of a normal double helix of DNA?

Water is an excellent solvent. Select the property that justifies this statement.

If nine molecules of a monosaccharide with the formula C6H12O6 are assembled to produce a complex carbohydrate, how many atoms of hydrogen will be in the final polymer?

Compare the number of H+ ions in a solution with a pH of 2 to a solution with a pH of 6

Salivary glands produce a large quantity of enzymes, which are transported out of the secretory cells. Which of the following organelles would be in abundance in these cells?

Prokaryotic and eukaryotic cells have all of the following structures in common EXCEPT

An organelle that is characterized by extensive, folded membranes and is abundant in cells that detoxify poisons, such as liver cells

An organelle with a cis and trans face, which acts as a packaging and secreting center of the cell

These organelles are not found in red blood cells but are present in large numbers in muscle cells

Large membrane-bound structures that contain hydrolytic enzymes and that are found predominantly in animal cells

Insulin is a protein synthesized in the cytoplasm of pancreas cells and then transported to the plasma membrane where it enters the bloodstream. Which of the following summarizes the pathway for insulin through a pancreatic cell?

Which of the following component molecules of the plasma membrane is most important in the reception phase of cell signaling?

Which of the following uses passive transport, without protein channels, to move materials across the cell membrane?

Large molecules are moved out of the cell by which of the following processes?

In cell signaling, how is the flow of specific ions regulated?

Which of the following processes could result in the net movement of a substance into a cell if the substance is more concentrated in the cell than in the surroundings?

What is a G protein?

Which of the following can activate a protein by transferring a phosphate group to it?

Many signal transduction pathways use sec messengers to

Which of the following signal molecules pass through the plasma membrane and bind to intracellular receptors that move into the nucleus and function as transcription factors to regulate gene expression?

The fluid mosaic model describes the plasma membrane as consisting of

Small, nonpolar, hydrophobic molecules such as fatty acids

Cells of the pancreas will incorporate radioactively labeled amino acids into proteins. The "tagging" of newly synthesized proteins enables a reasearcher to track their location. In this case, we are tracking an enzyme secreted by pancreatic cells. What is its most likely pathway?

If the S phase were eliminated from the cell cycle, the daughter cells would

Protein phosphorylation is commonly involved with all of the following EXCEPT

White blood cells (WBCs) are most resistant to lysis than red blood cells (RBCs). When looking at a sample of WBCs, what would you do to reduce interference from RBCs?

Which of the following groups is best characterized as being eukaryotic, multicellular, heterotrophic, and without a cell wall?

Systematists categorize all living creatures into what three domains?

Which of the following is a symbiotic relationship in which both organisms benefit?

Place the following groups of plants in order beginning with those that first appeared on Earth.

Evolution of which feature enabled vertebrates to reproduce successfully on land?

Genetic variation in bacterial populations is introduced in several ways. Select the one process that will not introduce genetic variation in bacteria.

Shared derived characters are used to develop cladograms. Which is a correct description of them?

In a comparison of birds and mammals, having four appendages is

Which of the following processes is responsible for the bending of the stem of a plant toward a light source?

Hydrogen bonding plays a particularly important role in which plant process?

How does the sperm of flowering plants reach the egg?

Which of the following plant structures will become the seed?

In order to flower, short-day plants require a period of

If a long-day plant has a critical length of 9 hours, which 24-hour cycle would prevent flowering?

Which of the following statements best supports the idea that certain cell organelles are evolutionarily derived from symbiotic prokaryotes living in host cells?

Cells that produce digestive enzymes must contain a lot of _____, whereas the cells that detoxify poisons in the liver would have an abundance of ____.

Which of the following is an example of simple diffusion across a membrane?

Insulin is a protein that is produced by pancreatic cells and secreted into the bloodstream. Which of the following options correctly lists the order of the structures through which insulin passes from its production to its exit from the cell ?