You can tell the age of a yeast cell by (a) counting scars.
Yeast is a unicellular eukaryotic organism. It belongs to the kingdom Fungi. It is primarily used in baking, cooking and in alcohol industries as well. There are various strains of yeast and the most widely used one is <em>Saccharomyces cerevisiae</em>, also called the baker's or the brewer's yeast.
Scars on the yeast are actually the bud scars formed due to budding. Budding is the process by which the yeast reproduces and gives rise to its offspring. Hence every time a daughter bud pinches off from the yeast cell, a scar is formed.
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Answer:
The correct answer is option C.
Explanation:
The slugs prefer pink flowers over the white ones. Thus, if the slugs are withdrawn from the population, the pink flowers are no more consumed and their number enhances. In a similar manner, the bees like to pollinate more pink flowers in comparison to the white ones.
Thus, again, the pink flowers are getting pollinated in huge concentrations. Thus, the fruits and seeds are set and they produce another generation of pink flowers. Ultimately, there would be more pink flowers in the region in comparison to the white ones as the slugs that used to consume them, are also withdrawn.
Earlier, both the numbers of pink and white flowers would remain steady as even though only some of the bees were pollinating white flowers, they were not getting consumed by the slugs. This had maintained a balance between the number of pink and white flowers. Thus, the number of pink flowers would increase with time if the slugs are removed.
Answer:
1. Endocrine
2. Exocrine
Explanation:
The pancreas serves as both endocrine and exocrine gland.
The pancreas is an exocrine gland as the pancreatic acini produce digestive enzymes that are delivered to the small intestine through a network of ducts. The glands that release their secretions by ducts are called exocrine glands.
Islets of Langerhans scattered among pancreatic acini serve the endocrine part of the pancreas. The alpha cells of pancreatic islets secrete hormone glucagon while the beta cells of the islets secrete the hormone insulin directly in the bloodstream. Likewise, the delta cells of pancreatic islets secrete hormone somatostatin. The ductless glands that release their secretions directly into the bloodstream are known as endocrine glands.
Answer:
Acid rain: Rainfall made so acidic by atmospheric pollution that it causes environmental harm, chiefly to forests and lakes. The main cause is the industrial burning of coal and other fossil fuels.
Alternative fuels is an excellent way to prevent acid rain and to stop using nonrenewable fuels and switch over to renewable sources of energy, such as solar, wind and water energy.
He observed 15 different finch species that originated as one ancestral bird. all differing in body shape, beak size, and mating habbits
