Your answer is A. The answer is not B or D because brass is not yet recognized as a mineral more of an alloy, and copper is a chemical element, so A must be the answer.
( PS: where is option choice C? )
Hope this helps, if not, comment below please!!!!
Answer:
nucleus and membrane bound
1. Proteins are made from subunits called amino acids. There are 20 different amino acids which are responsible for the variation of proteins. Those amino acids are linked together by peptide bonds and form polypeptide chains. According to the polypeptide structure, there are 4 levels in protein structure as primary structure, secondary structure, tertiary structure and quaternary structure.
2. Starch is a type of carbohydrate. Hence, the subunits of starch are sugar molecules which are called as glucose. The elements of glucose are C,H,O. By linking glucose units with 1-4 alpha glycosidic bonds, the polysaccharide chain is formed. Hence, starch is also a polysaccharide<span>.
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3. DNA is made from subunits called nucleotides. Nucleotides consist of deoxyribose, phosphate group and nitrogenous base.
There are two types of nitrogenous base as purines and pyrimidines. Adenine (A) and guanine (G) are purines and
thymine (T) and cytosine (C) can be seen as pyrimidines. Those nucleotides are linked together by sugar phosphate bonds which are formed between 5' phosphate group and 3' -OH group<span>.</span><span>
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Bacteria exposed to DNA can incorporate the DNA and change phenotype.
Hope this helps.
Have a nice day.
Answer:
Seminal vesicles
Explanation:
The seminal vesicles also called vesicular glands are found only in some mammals. Those are paired tubular glands within the pelvis with the function to secrete fluid that will become the semen.
Male cat does not have a seminal vesicle, but do have other accessory glands that secrete the seminal fluid such as prostate gland and Cowper´s (bulbourethral) glands.
