The deuterostomes are animals whose
a. stomach is in front of the crop.
b. mouth is covered by a fleshy lip.
c. blastopore becomes the anus.
d. digestive tract is lined by mesoderm.
b
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Which of the following hormones is one that is made by your fat cells and circulates in the blood then sends a signal to the brain to stop eating when you are full?
A. insulin B. cortisol C. leptin D. glucagon
The chemicals that attract neutrophils to a site of infection are called ____________________
Fill in the blank(s) with correct word
If calcium is not present in the muscle cell what complications can occur in regards to muscle contraction?
A. Tropomyosin will not be pulled away from the myosin binding sites. B. The power stroke will not be produced preventing the actin filament from moving. C. Myosin heads will not bind to the actin filament. D. All of these are complications resulting from a lack of calcium.
There are more rods than cones but many rods may synapse with one ganglion cell while only one cone synapses with one ganglion. Therefore, when light intensity drops at night, we can expect a lit city street scene to be
A. identical to the image formed of the street in daytime. B. more black-and-white and grainy. C. intense in color but grainy. D. more black-and-white but very sharp. E. intense in color and very sharp.