Which of the following is not a consequence of signal binding to a receptor?

a. Activation of receptor enzyme activity

b. Diffusion of receptor in the plasma membrane

c. Change in conformation of the receptor protein

d, Breakdown of the receptor to amino acids

e. Release of the signal from the receptor

Water flows downward along a pipe that is inclined at $30^{\circ}$ below the horizontal, as shown. Pressure difference $p_A-p_B$ is due partly to gravity and partly to friction. Derive an algebraic expression for the pressure difference. Evaluate the pressure difference if $L=5\ \mathrm{ft}$ and $h=6\ \text{in.}$

A scuba diver is below the surface of the water when a storm approaches, dropping the air pressure above the water. Would a sufficiently sensitive pressure gauge attached to his wrist register this drop in air pressure? Give your reasoning, assuming that the diver's wrist does not move as the storm approaches.

A 1.00-mol sample of an ideal diatomic gas at a pressure of $1.00 \mathrm{~atm}$ and temperature of $420 \mathrm{~K}$ undergoes a process in which its pressure increases linearly with temperature. The final temperature and pressure are $720 \mathrm{~K}$ and $1.60 \mathrm{~atm}$. Determine $(a)$ the change in internal energy,, and

Which process would release energy from gold-fission or fusion? From carbon? (a) gold: fission; carbon: fusion (b) gold: fusion; carbon: fission $(c)$ gold: fission; carbon: fission (d) gold: fusion; carbon: fusion

Choose the best answer.

Acids

a. release hydrogen ions in solution.

b. cause the pH of a solution to rise above 7.

c. take up hydroxide ions and become neutral.

d. increase the number of water molecules.

e. Both a and b are correct.

Working together. One of the liver’s key roles is the maintenance of blood-glucose concentration when an organism is fasting, such as during a night’s sleep. Mobilizing liver glycogen requires enzymatic teamwork. Identify the enzymes that are required for the liver to release glucose into the blood

Which of the following statements about anabolic pathways is true?

a. They release energy by degrading polymers to monomers.

b. They consume energy to build up polymers from monomers.

c. They are usually spontaneous chemical reactions.

d. They decrease the entropy of the organism and its environment.

A bowling ball is hung from the ceiling by a steel wire (Fig. 8-27). The instructor pulls the ball back and stands against the wall with the ball against his nose. To avoid injury the instructor is supposed to release the ball without pushing it. Why?

Dynamic pressure is the pressure generated by the velocity of the moving fluid and is given by $q(v)=\frac{1}{2} p v^2$, where p is the density of the fluid and v is the velocity of the fluid. Water has a density of $1 \mathrm{~g} / \mathrm{cm}^3$. What happens to the dynamic pressure of water when the velocity continuously increases?

The air around you puts pressure on your body equal to $14.7$ psi. When you are underwater, the water exerts additional pressure on your body. For each foot you are below the surface of water, the pressure increases by $0.445$ psi. (a) What does $14.7$ represent in the expression $14.7+0.445d$? (b)What does $d$ represent in the expression? (c)What is the total pressure on a person's body when $d=8$ ft?

Many chemical reactions release energy. Suppose that at the beginning of a reaction, an electron and proton are separated by $0.110 \mathrm{~nm}$, and their final separation is $0.100 \mathrm{~nm}$. How much electric potential energy was lost in this reaction (in units of $\mathrm{eV}$ )?

The rate of change of atmospheric pressure $P$ with respect to altitude $h$ is proportional to $P$, provided that the temperature is constant. At $15^{\circ} \mathrm{C}$ the pressure is $101.3 \mathrm{kPa}$ at sea level and $87.14 \mathrm{kPa}$ at $h=1000 \mathrm{~m}$.

What is the pressure at the top of Mount McKinley, at an altitude of $6187 \mathrm{~m}$?

Air having an approximate molar composition of 79% $N_2$ and 21 % $O_2$ fills a $0.36-m^3$ vessel. The mass of mixture is 100 kg. The measured pressure and temperature are 101 bar and 180 K, respectively. Compare the measured pressure with the pressure predicted using a. the ideal gas equation of state. b. Kay's rule. c. the additive pressure rule with the Redlich-Kwong equation. d. the additive volume rule with the Redlich-Kwong equation.