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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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Are genes a segment of DNA containing a set of instructions for making a protein ?
brilliants [131]

Answer: The given statement is True.

Gene can be described as the segment of DNA ( deoxyribonucleic acid), which codes for a particular protein. The protein thus formed, corresponds to a specific trait ( such as skin color, hair color, color of eye) of the individual organism.

They possess set of  instructions for making a protein in the form of nucleotide sequences. Gene undergo transcription to form mRNA ( messenger RNA), which is then converted into particular protein through translation.

Genes are inherited from parents by their offspring and in this way specific traits are inherited by offspring from their parents.

Thus, given statement in the question is correct.


8 0
2 years ago
During photosynthesis, radiant (or light) energy is converted into what kind of energy?
olga_2 [115]

Answer: It is converted to chemical energy.

Explanation:

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2 years ago
Closely stacked, flattened sacs (plants only)
Nesterboy [21]
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2 years ago
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strojnjashka [21]

Answer:

Renewable Energy Resources.

Explanation:

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Hydroelectric schemes can only be built in mountain regions where rainfall and rivers are plentiful which involves upset of aquatic ecosystem. This poses a dangerous pollution problem though.

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