1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
frozen [14]
3 years ago
15

A defective Na+/K+ ATPase pump is isolated from a plasma membrane and studied. Careful measurements in the laboratory determine

that the pump is able to hydrolyze ATP and transports 3 Na+ ions across the plasma membrane. The pump is also able to bind 2 K+ ions with high affinity. However, the pump is unable to shuttle K+ ions across the plasma membrane. Based on these observations, what is the most likely cause of the defect in this pump?
Biology
1 answer:
Paul [167]3 years ago
8 0

Answer:

The defective Na+/K+ ATPase is not able to dephosphorylate itself.

Explanation:

Na+/K+ ATPase pump cycles between two different forms: the phosphorylated form of the Na+/K+ ATPase has a high affinity for K+ ions and low affinity for Na+ ions. The release of phosphate from ATP and phosphorylation of Na+/K+ ATPase makes the pump to release the bound 3 Na+ ions outside the cell and to bind to the 2 K+ ions from the surroundings. As the Na+/K+ ATPase is dephosphorylated, its affinity for K+ ions is reduced leading to the release of K+ inside the cell.  

A defective Na+/K+ ATPase that is able to pick and bind the K+ ions but is not able to shuttle them across the membrane should be defective to achieve its dephosphorylated form. Without releasing phosphate, the affinity of the pump for K+ ions is not reduced and the pump would not be able to release them to the opposite side of the membrane.  

You might be interested in
Which of the following diseases is passed on by inheritance? A. tuberculosis B. sickle cell anemia C. athlete's foot
aivan3 [116]
The correct answer is A
7 0
3 years ago
Read 2 more answers
Which statement best describes the potential confusion in early studies of inheritance patterns for skin color?
Anni [7]
<span>Melanin helps protect the skin against effects of the sun such as skin cancers  and premature aging. In African American skin, melanin provides a sun protection factor (SPF) equivalent to 13.4 compared to 3.4 in white skin and thus the former have lower incidences of skin disorders associated with exposure to the sun.</span>
3 0
3 years ago
Read 2 more answers
BRAINLIEST REWARD
slamgirl [31]
...........................................................................................................
6 0
3 years ago
Read 2 more answers
A food that is high in calories and could be used for energy storage in animals is MOST LIKELY high in what major nutrient
balu736 [363]
Carbohydrates I'm thinking
5 0
3 years ago
The sympathetic and parasympathetic nervous systems are both part of which division of the nervous system?
Nat2105 [25]

Answer:

The answer is D. The autonomic nervous system.

3 0
3 years ago
Other questions:
  • Organisms that have the ability to regulate their internal environment in order to maintain a steady state called ____.
    7·1 answer
  • In medical terminology what is The term _______________means “the top or highest point.”
    8·1 answer
  • The active site of an enzyme is the region that _____.
    11·1 answer
  • In carnations, heterozygous plants have pink flowers. The homozygote dominant genotype produces red flowers, and the homozygous
    6·1 answer
  • Which of the following is TRUE about most newborns’ hearing and vision? Group of answer choices.
    15·1 answer
  • What would most likely happen if the number of shrimp decreased
    11·2 answers
  • It is said that corporations have perpetual life. <br> a. True <br> b. False
    12·1 answer
  • Enzymes in aerobic digestion that help in digestion of protein, carbohydrates and fats​
    12·1 answer
  • Lable the dna molecule FAST!
    13·1 answer
  • The chart below shows some events in Earth's history and the primary sources of information which were examined to date the even
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!