Match the letter of each example from childbirth to the appropriate component of a positive feedback loop.A. pituitary gland secretes oxytocin, which acts on the uterusB. uterine contractions increaseC. fetus is pushed against uterine openingD. receptors detect stretchE. brain receives and compares stretch informationResponse
What will be an ideal response?
B
B. uterine contractions increase
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The Km for enzyme Q is 1 × 10-6 M. Q catalyzes the reaction R?S at a velocity of 30 µmole/min when the concentration of substrate is 0.02 M; hence, Vmax is approximately 30 µmole/min
Assuming Michaelis-Menten kinetics is followed, what will the reaction velocity be when [S] is 10-7 M? A. 30 µmole/min B 3.0 × 10-7 µmole/min C. 2.7 µmole/min D. 2.7 × 10-12 µmole/min E. 0.27 µmole/min
Figure "B" in the above pair is a
a. cotyledon. b. petiole. c. dicot; evergreen. d. veins.
A spider would be much less harmful if it lacked:A
spinnerets. B. eye spots. C. labial palps. D. chelicerae. E. mandibles.
The Permian period ended and then rapid speciation occurred as new animal and plant forms evolved. The most likely explanation for this is _____
I) adaptive radiation II) ecological opportunity III) lack of competition IV) morphological innovation A) just one of the above B) two of the above C) three of the above D) all of the above