Answer:
39 double helical DNA molecules.
Explanation:
- Meiosis always produces haploid cells.
- Sperm and Eggs are produced after meiosis.
- So, sperm and egg cells of dog would have 39 chromosomes and one double helix DNA molecule is present in each chromosome comprising 39 double helical DNA molecules.
<em>A chromosome has one DNA molecule before replication and have two DNA molecules after DNA replication.</em>
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Answer:
The correct option is H) these acids change the environment.
Explanation:
Soil can be described as the part of the environment where plants grow. In primary succession, life stars arising in an area which has no soil and only rocks, This is possible because lichens are the organisms which can grow on the rocks. Lichens secrete certain acids which break down these rocks and hence soil begins to form when these rocks break. This makes it possible for other plant species to grow on these lands.
Aerobic respiration happens in the mitochondrion of eukaryotic cells.
Anaerobic respiration does not use oxygen gas and happens in one process after glycolysis called Fermentation.
The process used to make beer would be a kind of fermentation, Alcohol fermentation, I believe.
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