A man has a mutation in a mitochondrial gene encoding a subunit of the ATP synthase complex. The mutation leads to a defective ATP synthase that is not able to synthesize ATP effectively, and this in turn leads to extreme muscle weakness in the affected individual. If this man has children, what is the likelihood that they will inherit this disease from him?
A. 100%
B. 0%
C. 50%
D. 25%
E. 75%
B. 0%
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During animal development, a fertilized egg divides to form a ball of undifferentiated cells called a:
A. blastula. B. gastrula. C. meristem. D. zygote. E. neurula.
What other information is related to the question? Which information is most useful?
What will be an ideal response?
Steroid and thyroid hormones do not bind to membrane surface receptors because they ____
a. are small enough to pass directly through the membrane b. are soluble in the lipid bilayer c. pass through special membrane channels d. are water-soluble e. dissolve in the cholesterol present in cell membranes
Which of the following statements regarding saltwater fish is true?
A) The concentration of solutes in the internal fluids of saltwater fish is lower than that in the surrounding water. B) The concentration of solutes in the internal fluids of saltwater fish is higher than that in the surrounding environment. C) Saltwater fish produce large amounts of diluted urine. D) Saltwater fish have body fluids with a solute concentration equal to their surroundings.