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Crazy boy [7]
2 years ago
15

Yeasts are single-celled eukaryotes that don't have a mitochondrion. Can they exist in an environment without oxygen?

Biology
1 answer:
sesenic [268]2 years ago
7 0

Answer:

Letter a. Yes, yeasts can exist in an oxygen-poor environment.

Explanation:

Mitochondria are an organelle that we can find in the majority of eukaryotic cells. Mitochondria help in produces the energetical molecule of ATP. We start with one molecule of glucose that passes through a process called glycolysis to convert glucose into pyruvate. This pyruvate molecule can follow two pathways: when oxygen is available the pyruvate enter into the Krebs cycle and proceeds to the respiratory chain in the mitochondria, when oxygen is not present, pyruvate pass into another pathway, one is the alcoholic fermentation producing ethanol and dioxide of carbon.

As yeast are a eukaryotic organism, they have mitochondria and can grow in the presence of oxygen. When oxygen is absent yeast can grow using the fermentation pathway producing alcohol.

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Sedbober [7]

Answer:

mitochondrion

Explanation:

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3 years ago
Given the sequences below identify the type of mutation taking place Original: ATTTGAGCC Mutated: ATTGAGCC
Snezhnost [94]

Answer: The mutation occurred in this sequence is deletion.

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Which of the following best explains why ecosystems need a continual influx of new energy?
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In the F2 generation of a dihybrid cross two phenotypes appear in the ratio 1:1. two phenotypes appear in the ratio 3:1. four ph
Bezzdna [24]

Answer:

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Explanation:

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The dominant gene takes up the largest ratio (9/16) while the recessive gene takes up the smallest (1/16). Any deviation from 9:3:3:1 and the number of phenotypes produced from a dihybrid cross is an indication that the genes involved do not obey Mendelian laws.

8 0
2 years ago
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I – False

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Similarities of fossils of chimpanzees and humans are an example of Molecular Homology – TRUE

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