The cells that produce hair made of protein contain a lot of ________, while the cells that produce the oils that coat the hair contain a lot of ________
A) smooth endoplasmic reticulum; lysosomes
B) rough endoplasmic reticulum; smooth endoplasmic reticulum
C) smooth endoplasmic reticulum; rough endoplasmic reticulum
D) microbodies; lysosomes
Answer: B
You might also like to view...
Which of the following are characteristics of Archaeopteryx lithographica? Check all that apply.
_____ a beak with teeth _____ a small, reptilian breastbone _____ claws _____ feathers on its wings _____ a tail with few vertebrae
Mutations in the DFNA20/26 locus, which codes for the actin gamma 1 protein, are associated with congenital deafness. An irate senator complains that government money is being wasted on studies of this mutant gene -- in yeast! "I am no biologist," says the senator, "but I am pretty sure yeast don't have ears." How do you respond?
A. "You are right, Senator -- yeast do not have ears. We should revoke the funding immediately." B. "We can learn valuable information about the structure of the mutant protein by expressing it in yeast. It is difficult to collect large amounts of actin from tiny hair cells, and unethical to collect it from human patients." C. "We can learn valuable information about the transcription of the mutant gene in yeast. It is much more difficult to study transcription in human cells." D. "We can learn valuable information about sound transmission through the mutant yeast. By placing a speaker against a yeast vial and recording sound from the other side, we can infer how the mutant actin affects sound waves." Clarify Question What is the key concept addressed by the question? What type of thinking is required? Gather Content What do you already know about mutant genes? What other information is related to the question? Choose Answer Given what you now know, what information is most likely to produce the correct answer? Reflect on Process Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
Explain the key differences between gradualistic equilibrium and punctuated equilibrium.
What will be an ideal response?
A phylogenetic tree constructed using sequence differences in mitochondrial DNA would be most valid for discerning the evolutionary relatedness of _____
A) archaeans and bacteria B) fungi and animals C) chimpanzees and humans D) sharks and dolphins