Which statement provides evidence for the endosymbiont hypothesis?
a. Atmospheric oxygen can combine with iron atoms to form deposits of iron oxide.
b. Many-celled algae would have been difficult for single-celled predators to engulf for food.
c. The fossils of animals first appear in Precambrian rocks that are around 500 million years old.
d. Some cells evolved the ability to use the energy found in inorganic molecules to drive the synthesis of complex molecules from simple ones.
e. Mitochondria, chloroplasts, and centrioles in eukaryotic cells each contain their own minute and unique supply of DNA.
Ans: e. Mitochondria, chloroplasts, and centrioles in eukaryotic cells each contain their own minute and unique supply of DNA.
You might also like to view...
You dissect the brain of a mutant mouse and find that parts of the "white matter" look gray. What is a likely cause?
A. defects in myelination B. peripheral nerve damage C. oversized dendrites D. excess myelination E. excess neuronal proliferation Clarify Question · What is the key concept addressed by the question? · What type of thinking is required? · What key words does the question contain? Gather Content/Choose Answer · What do you already know about white matter? How does it relate to the question? Consider Alternatives · What other information is related to the question? Choose Answer · Given what you now know, what information and/or problem solving approach 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?
Anandamide is a substance made in the body that is the equivalent of the active component of
A) heroin. B) chocolate. C) marijuana. D) barbiturates.
As CO2 builds up in the atmosphere it also accumulates in the oceans, causing acidification. This poses a challenge to marine creatures that rely on calcium carbonate deposition such as corals, mollusks, and even fish, which use it to form otoliths. Researchers investigated whether otolith deposition was impaired at low pH, and were surprised to find that otoliths were actually larger in this condition. This means that, while coping with global climate change, at least fish will still be able to maintain which sense(s)?
A. feeling pain B. vision C. taste D. olfaction E. hearing and balance 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 otoliths? 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?
Alternate forms of a gene are best described as _____
A. homologues B. loci C. alleles D. homozygous E. heterozygous