A tuft of capillaries within the kidney that obtains blood from the arterioles and filters it into the nephron is called the
A. glomerulus.
B. collecting duct.
C. renal medulla.
D. renal cortex.
E. renal pelvis.
A. glomerulus.
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While looking at some seawater through your microscope, you spot the egg of an unknown animal. Which of the following tests could you use to determine whether the developing organism is a protostome or a deuterostome? See whether the embryo _____.
A) develops germ layers B) exhibits spiral cleavage or radial cleavage C) develops a blastopore D) develops an archenteron
Which one of the following is not a fungus?
A) Aspergillus B) Candida C) Penicillium D) Prototheca
The master gene Hox helps to sculpt the body
plan of embryos by a. inhibiting the Dlx gene to prevent extra limbs. b. timing the activation of Dlx genes. c. causing cell death in any cell not expressing the Hox gene. d. converting sugar into energy to allow the process to go to completion. e. inducing mutations in plants.
To be a part of the biosphere any particular region
must a. be close to the earth’s surface. b. include sources of water. c. support life. d. include oxygen. e. be exposed to sunlight.