The encysted larva of the beef tapeworm is called a
A) redia.
B) cercaria.
C) cysticercus.
D) metacercaria.
E) proglottid.
C
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The Mitchison and Kirschner ________ model of how microtubules transition between periods of growth and catastrophe proposes that ________ bound to ?-tubulin subunits at a microtubule plus end stabilizes the end and promotes growth,
but if the rate of hydrolysis to ________ exceeds the rate of tubulin addition, the end becomes unstable and loses subunits. Fill in the blank with correct word.
Not everyone can travel to a remote area of the world to protect a rare habitat, but there are choices each of us can make each day to reduce habitat destruction and slow the rate of species extinction
What action could you take to reduce habitat destruction caused by the mining, drilling, and transport of fossil fuels? A) Eat lower on the food chain. B) Only buy products that are sustainably harvested. C) Carpool or use public transportation. D) Keep the thermostat turned to warmer levels in winter and cooler levels in summer.
Describe the ongoing research concerning the relationship between species richness and community stability. What
research supports or fails to support this relationship? What will be an ideal response?
Suppose that pigmentation of a Labrador retriever's fur is subject to epistasis of the B alleles by the e alleles. B (black) is dominant over b (chocolate brown). E is dominant over e. Homozygous e is epistatic to the black and chocolate-brown genes. Given this information, what will result from a F1 dihybrid cross between two dogs?
a. 9/16 black, 6/16 brown, 1/16 yellow b. 9/16 yellow, 3/16 brown, 4/16 black c. 9/16 yellow, 6/16 brown, 1/16 black d. 9/16 black, 3/16 brown, 4/16 yellow