Answer is option B. Pores and transporters.
Plasma membrane contains pores, channels and transporter proteins which are involved in transportation of molecules from outside to inside of the cells and vice versa. Pores are formed by proteins and pore sizes are fixed for certain molecules. Thus molecules bigger in size than pore diameter, are not able to pass through the pores. Whereas transporter proteins are very selective for molecules. Upon binding with molecules, confirmational changes occur in transporter proteins. These bindings are non-covalant in nature
QUESTION 17 bind their solutes with great specificity in the same way discriminate between solutes mainly...
answer whatever u can please
Of the following choices, the best way to determine the activity of an enzyme is: A. Calculate the Vmax and of the Vmax activity OB. Plot substrate concentration on the x-axis and amount of product formed on the y-axis. The slope-rate. OC. Determine the activation energy (Ea) without the enzyme and then measure the Ea with the enzyme added. The difference in free energy is the activity D. Calculate amount of product formed at different...
QUESTION 17 Figure 8-24. The figure represents the relationship between the size of a tax and the tax revenue raised by that tax 9 Tax Resenue Tax Side Refer to Figure 8-24. Tax revenue would O a. decrease if the economy began at point B and then the tax rate was decreased ob increase if the economy began at point and then the tax rate was decreased c.decrease if the economy began at point and then the tax rate was...
Hello, this is my study guide for my final test, please
help me find the right answers to them.
QUESTION 1 The epiglottis directly covers the glottis found inside the larynx. True False QUESTION 2 The trachea connects to the lungs. True False QUESTION 3 The glottis blocks the opening to the respiratory passage during swallowing. True False QUESTION 4 Inhaled air goes directly into the nasopharynx. True O False QUESTION 5 Residual lung air volume is the amount of...
biochemistry
if you could please help me answer the following questions!
EFT i 11) (6 pts) Which types of symmetry are possible for a protein with six (6) identical subunits? (Select all correct answers) a) cyclic C b) cyclic C3 c) dihedral D2 d) dihedral D e) octahedral o f) icosahedral ро, Yo₂ - pO₂+ Pso 12) (6 pts) What is the fractional saturation of oxygen binding to myoglobin when the partial pressure of oxygen is 1.5 torr and dissociation...
e. 18 Test Your Knowledge MULTIPLE CHOICE: Choose the one best answer. 1. Each element has its own characteristic atom in which a. the atomic mass is constant. b. the atomic number is constant. c. the mass number is constant. d. Two of the above are correct. e. All of the above are correct. 2. Which of the following is not a trace element in the human body? a. iodine b. zinc c. iron d. calcium e. fluorine 3. A...
1. According to the paper, what does lactate dehydrogenase
(LDH) do and what does it allow to happen within the myofiber? (5
points)
2. According to the paper, what is the major disadvantage of
relying on glycolysis during high-intensity exercise? (5
points)
3. Using Figure 1 in the paper, briefly describe the different
sources of ATP production at 50% versus 90% AND explain whether you
believe this depiction of ATP production applies to a Type IIX
myofiber in a human....