The organelle described above is called the endoplasmic reticulum.
The rough portion of this called the granulated endoplasmic reticulum and the ribosomes attached to it enable it to produce proteins.
The smooth portion of this organelle does not contain ribosomes and it has a role in the synthesis of lipids.
Answer: Directional selection
Explanation:
In the population genetics, directional selection is the mode of selection during which the extreme phenotype are favored more than the other phenotype.
This causes the allele frequency to shift towards the time in the direction of that particular phenotype.
Here, in the question the acid tolerant plant species is favored over the other phenotype.
Hence, the correct answer is option D
Human placental lactogen( hPL) hormone released during fetal development is primarily responsible for preparing breasts for lactation.
- Human placental lactogen also stimulates milk ,known as human chorionic somatomammotropin. It's made by the placenta. It gives nutrition to the fetus. secretion of milk is called lactation
- Mother milk contains all the nutrients that an child needs in the first 6 months of life, including fat, carbohydrates, proteins, vitamins, minerals and water. It's fluently digested and efficiently used. secretion of milk is called lactation. bone milk also contains bioactive factors that compound the child's immature vulnerable system, furnishing protection against infection, and other factors that help digestion and immersion of nutrients. mother milk also protect the child from disease.
To learn more about Human placental lactogen.
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Differences in air pressure at Earth's surface are caused by unequal heating of Earth. Warm air masses are less dense and have lower air pressure than cold air masses.
Answer:
The H1N1 virus replicates quickly.
Explanation:
The H1N1 virus replicates quickly, which is why it is of high importance that an antiviral agent is administrated within the first 48 hours so that the reproduction rate of the virus can be lowered, resulting in an effective treatment against H1N1 flu. In other words, by administrating an antiviral in the first 48 hours, we are helping the body to fight the virus since the antiviral stops the reproduction of it, and we increase the chances of succeeding at it.
