What is "twinkling"? (in telescopes)
A. Flashing of quickly revolving starts
B. Distortion of light in the very large mirrors of refracting telescopes caused by moving air currents
<u>C. Distortion of light by lenses more that three feet across due to sagging class </u>
D. Interference between the lenses of a refracting telescope that distorts the final image
Answer:
It is TURE
Fats are usually of animal origin while oils are usually of plant origin. Fats and oils function well as energy-storage molecules because they contain carbon.
Answer: Serum thyroid-stimulating hormone test would confirm secondary hypothyroidism.
Explanation:
The serum thyroid stimulating hormone (TSH) test involves the intravenous administration of a small amount of Thyroid Releasing Hormone (TRH) and the measurement of TSH levels at some points following the administration.
The first step involves collecting the blood sample of the patient and measuring the baseline TSH prior to the intravenous administration of TRH. Blood sample is drawn again 30 minutes after TRH administration, and TSH level is measured and compared to the baseline measurement.
If there is slight or no increase in serum TSH level following TRH administration, it is secondary hypothyroidism because the cause of the hypothyroidism is in the anterior pituitary gland. This means that the pituitary gland is not secreting TSH because it is diseased.
Answer:
Regarding the genotype and phenotype of the original parents they are known by the name of parental classes. These parental classes have appeared of the genotype are classified as homozygous or heterozygous.
Explanation:
While the reciprocal classes are also the genotypes and phenotypes of the crosses. These reciprocal classes are personified if the crossing occurs between the homozygous alleles. This is due to the fact that the chromosomal part is exchanged in the two chromosomes, since the cross products are the same as the products that are formed in the parent classes, this occurs in a phenomenon known as homozygosity.
In the event that the crossover occurs in a heterozygous allelic tetrad, then an exchange between the different chromosomal parts will occur, resulting in recombinant alleles. In this particular case, the parenting classes cannot be the same. This phenomenon is known as heterozygosity.
<span>The evolution of a long neck in giraffes is an example of natural selection in that the giraffes with long necks would be able to eat more leaves from higher trees and thus be more successful.</span>
