The thyroid is a butterfly-shaped gland that lies in front of the windpipe (trachea), just below the voice box. The parathyroid glands are four tiny glands located behind the thyroid gland. The parathyroid glands produce a substance (parathyroid hormone) that helps control the amount of calcium in the blood.
Answer:
DNA sequences similarity among various organisms may be used to establish evolutionary relationship among living organisms. ... Organisms or animals whose DNA sequences are similar share common evolutionary origin.
Explanation:
It is a method in the textile industry where two sets of threads are interwoven at the right-angles to form a cloth
<u>Explanation:</u>
<u>1.100% cotton:</u>
- open weave.
- easily distorted with water and washing.
- stretches in one direction only.
<u>2. 100% wool:</u>
- very strong.
- dense and compact.
- different faces.
- diagonal design.
- soft and pliable.
<u>3. 100% Nylon Rope:</u>
- Not durable.
- Tends to snag
- The shiny surface.
- high light reflectance.
- light fiction with other garments.
<u>4. 100% Spandex Nylon:</u>
- Not durable.
- Tends to snag and break during wear.
- light fiction with other garments.
<u>5. 100% cotton blend</u>
- easily distorted with water and washing.
The answer would be A—the molecular formula given is that of a long-chain, saturated fatty acid, which would be insoluble in water (i.e., hydrophobic).
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B describes carbohydrates, which can function as a storage of energy (e.g., starch or glycogen) or structural components (e.g., cellulose). The three examples just given are polymers of glucose, a monosaccharide; monosaccharide generally have the empirical formula CH2O; this is not the empirical formula of the given molecule (and, in any case, there are too few oxygen atoms for the number of carbon atoms), and so B is incorrect.
C describes an amino acid, likely an α-amino acid, which consist of a central, saturated carbon bonded to amino (—NH2) and carboxyl (—C(=O)OH) functional groups and a variable side chain, which determines the amino acid’s properties. Since the formula of an amino acid must contain nitrogen, which the formula given doesn’t have, the molecule couldn’t be an amino acid, and so C is incorrect.
D describes nucleic acids. Examples include DNA and RNA; nucleic acids and the nucleotide monomers that comprise them contain a nitrogenous base and a phosphate group. The given molecule’s formula has neither nitrogen nor phosphorus, and so cannot represent an amino acid, making D incorrect.
Answer:Scanning electron microscopy
Explanation: Scanning electron microscopy (SEM) image of oviduct cilia. The central cell shows a primary cilium. Surrounding cells are multiciliated with motile cilia
Hope that helps!
