The observation that a given enzyme retains its kinetic properties in different species adapted to different temperature regimes is a phenomenon known as
A) Arrhenius effect.
B) Q10.
C) Conservation of Km.
D) Homozyme stability.
Answer: C
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A warm surface loses heat to the air molecules continuously circulating over it by
A) conduction. B) radiation. C) evaporation. D) convection.
What role does LH play in stimulating sperm production?
A. LH targets the interstitial cells between seminiferous tubules in the testes, telling them to produce testosterone. B. LH stimulates sustenacular cells in the seminiferous tubules to produce androgen-binding protein. C. LH allows testosterone to accumulate in the tubules to initiate sperm production. D. None of these are correct.
Which of the following represents an endocrine secretion?
Phospholipase C cuts membrane phospholipids into
A) PIP2 and DAG. B) PIP2 and IP3. C) Ca2+ and DAG. D) DAG and IP3.