A certain protein receptor is capable of binding the neurotransmitter epinephrine but does not bind to the neurotransmitters dopamine, glutamate, or serotonin. This is because the receptor displays what characteristic?

Which of the following is not true of the cytoskeleton?

How does a chemical catalyst increase the rate of a reaction?

Which is a major function of the plasma membrane?

Hydrolysis of glycogen will have what effect on blood glucose level?

The Na/K ATPase pump is an enzyme that phosphorylates itself.

A pediatric patient presents with recurring bacterial infections. This could be due to a defect in phagocytosis.

Which of the following metabolic pathways can proceed in the absence of oxygen?

If you were given the sequence of nucleotides in a single gene and the total number of nucleotides was 90 (excluding start and stop signals); how many amino acids would you expect to find in the protein that is made from this gene?

Which of the following is a type of molecular interaction that determines the tertiary structure of a protein? (Choose all that could apply),,

One striking feature of plasma membrane structure is its symmetry, with the extracellular and cytoplasmic surfaces virtual mirror images of each other.

In DNA, thymine binds with adenine and cytosine binds with uracil.

Which of the following statements regarding the structure and function of cell membranes is correct?

Your colleague has discovered a new species and you are viewing one of the cells under the electron microscope. You see a large, oval-shaped structure in the center of the cell, surrounded by a membrane. After this observation, you hypothesize that the cells of this species are prokaryotic cells.

The fate of all endocytotic vesicles is digestion of their contents by lysosomal enzymes.

The promoter sequence of nucleotides in a gene is present on both strands of the DNA molecule, allowing transcription of both strands.

Which of these are functions of the Golgi apparatus?

Which of the following is not true of a polar chemical bond?

Which of the following words can be used to describe water? Choose all that could apply,,

Which of these is an example of a hypertonic solution?

Neurons have a very prominent nucleolus, which indicates that they are actively performing what function?

The major lipids in cellular membranes are phospholipids.

Which would be true if substance X was moving into a cell by primary active transport?

Proteins are broken down to amino acids by enzymes called transaminases.

The term "metabolism"

Chromosomes are composed mainly of DNA.

Enzymes

"Osmosis" refers to the movement of what substance across semipermeable membranes?

During oxidative phosphorylation, hydrogen atoms are passed serially from a coenzyme down a chain of molecules called cytochromes.

Which is true about mediated transport of substances across cell membranes?

If a protein’s conformation changes it is likely that its function will change as well.

Glycoproteins are protein molecules with molecules of glycogen attached to the amino acid side chains.

How many electrons are found in the outer shell of an oxygen atom?

What kind of fatty acid would be produced if three carbon-carbon double bonds are found?

A single genetic mutation will change a protein at what level of structure? (Choose all that could apply),,

One function of integral membrane proteins in the plasma membrane of cells is to form channels to allow passage of nonpolar solutes into the cell.

Peripheral membrane proteins are involved in regulating cell shape and motility.

Water molecules can form covalent bonds with other water molecules.

Which organelles would you expect to be especially numerous in cells such as muscle cells that have a tremendous demand for energy in the form of ATP?

The secondary structure of a polypeptide is formed by ionic bonds between amino groups and carboxyl groups

The covalent bond formed between two amino acids is called a ________________________bond

Which form of endocytosis is nonspecific, in that it occurs by the formation of an invagination of the plasma membrane, which then fills with interstitial fluid of the immediate area?

The clathrin protein involved in carrying out receptor-mediated transport remains with an endosome as it moves deep within the cell and is degraded entirely along with the ingested internal contents.

The site where most of the ATP is generated in a cell is the

Ion channels in cell membranes

Which would be true if substance X was moving into a cell by primary active transport?

Carbon-12 and carbon-14 are isotopes. How are they different from each other?

Macrophages are cells that engulf and digest bacteria and cell debris. To perform the digestive function, macrophages tend to have more __________ than other cells.

Which is NOT a function of the Golgi apparatus?

You are learning about an integral membrane protein. This protein has a region that is exposed to the extracellular fluid, a region that spans the membrane, and another region that is exposed to the intracellular fluid. Which of the following is likely TRUE of this protein?

Ion channels in cell membranes

What will happen if a normal cell is placed in a hypotonic solution?

Lysosomes are organelles specialized for breaking down intracellular debris or malfunctioning parts of cells.

Regarding the tonicity and osmolarity of solutions, which of the following statements is not true?

Intracellular fluid is defined as the fluid in the cytosol and organelles.

Substance X is a mostly polar molecule and Substance Y is a mostly non-polar molecule of a similar size. You create an artificial cell surrounded by a phospholipid bilayer that is made only of phospholipids. Which will diffuse from the extracellular fluid to the intracellular fluid faster if they are in unequal concentrations outside and inside the cell?

The nucleotide triplet in tRNA that base-pairs with a complementary triplet in mRNA is called the codon.

Once protein synthesis is completed, the protein that was synthesized may undergo further changes prior to its secretion or use within the cell.

Which best describes functions of the smooth endoplasmic reticulum?