![mlittleduck6947](/avatars/38052.jpg)
mlittleduck6947
10.03.2020 •
Biology
A NASA scientist receives satellite data indicating that a newly discovered planet contains no oxygen gas in its atmosphere. From this information she concludes that complex multicellular organisms are UNLIKELY to exist on that planet. This is because.
a. unicellular organisms consume multicellular organisms when oxygen levels are low
b. other electron acceptors (like iron) are unlikely to be widely available and abundant
c. endosymbiosis requires high oxygen concentrations for evolution to proceed
d. complex multicellular life cannot exist once photosynthesis has evolved
Solved
Show answers
More tips
- S Sport When will the Biathlon World Championships 2011 take place in Khanty-Mansiysk? Answers to frequently asked questions...
- O Other What is a Disk Emulsifier and How Does it Work?...
- F Family and Home What does a newborn need?...
- F Family and Home Choosing the Right Car Seat for Your Child: Tips and Recommendations...
- F Food and Cooking How to Get Reconfirmation of Registration?...
- C Computers and Internet How to Get Rid of Spam in ICQ?...
- A Art and Culture Who Said The Less We Love a Woman, the More She Likes Us ?...
- F Family and Home How to Get Rid of Your Neighbors?...
- S Society and Politics How Could Nobody Know About the Dead Mountaineers?...
- H Health and Medicine How to Cure Adenoids?...
Answers on questions: Biology
- B Biology Biological treatment plants make some hazardous wastes safe by a. covering them with clay b. burying them in containers c. neutralizing them d. burning them...
- B Biology Cellular mitosis consistently occurs in skin cells of the human body. Why is this process essential for healthy skin? A.Mitosis allows nutrients and water to be...
- M Mathematics PSSR: (Systems) Fitness Aileen and her brother Andrew had a bicycle race. Aileen rode at a speed of 20 feet per second while Andrew rode at a speed of 15 feet per...
- B Biology At which level of organization would a scientist need to look to see a single structure made from similar tissues? Organ. Cell. Organ system. Molecule....
- L Law Under P.L. 86-272, which of the following transactions by itself would create nexus with a state? Group of answer choices Order solicitation for a plot of real estate,...
Ответ:
c. endosymbiosis requires high oxygen concentrations for evolution to proceed
Explanation:
Endosymbiosis is an hypothesis which stipulates that complex organelles like mitochondrion and chloroplast evolved as a result of symbiotic relationship between aerobic, single cell prokaryotes in which an aerobic organism ingest an anaerobic organism in an atmosphere containing oxygen.
The oxygen in the atmosphere is like a poison to the anaerobic prokaryote and the ingestion by aerobic prokaryote protects it from the toxic effects of oxygen and in return, the ingested organism offers some benefit to its host resulting in a beneficial relationship.
Hence, the presence of oxygen is important for endosymbiosis and eventual evolution of complex organelles in multicellular organisms.
The correct option is c.
Ответ:
$400
Step-by-step explanation:
all you do is add 320+540+230+450+280+580/6 and the asnwe comes out to 400