Which of the following are sources of greenhouse gases?
A. Burning forests to clear agricultural land
B. Gastrointestinal tract of ruminants
C. Combustion of fossil fuels
D. Decaying vegetation in swamps
E. All of these choices are correct.
Answer: E
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Which of the following statements about the control of blood volume and blood pressure is false?
A. Angiotensin II stimulates the release of antidiuretic hormone, which increases salt and water uptake by the distal convoluted tubule. B. A drop in blood pressure stimulates the cells of the juxtaglomerular apparatus to release renin. C. Inactive angiotensinogen is converted to angiotensin II by an enzyme released from the lungs. D. Angiotensin II causes the smooth muscle in the walls of the arterioles to contract. E. Blood pressure and volume are monitored by baroreceptors in the aorta and carotid bodies.
For the calico coloration in cats, which of the
following is NOT true? a. Orange color is on one X chromosome. b. Black color is on one X chromosome. c. White is the result of another gene that blocks all pigment production. d. The color white is found on the Y chromosome. e. It does not occur in males.
The antibiotic erythromycin works by inhibiting the movement of ________ along the _________. Fill in the blank(s) with the appropriate word(s)
For which of the following organisms is the sporophyte stage the dominant stage in the life cycle?
A. Liverwort B. Fern C. Moss D. Charophyte E. Green alga Chlamydomonas