Answer:
The correct answer is option A.
Explanation:
Carbohydrates are one of the important biomolecule present on the earth. they are made up of carbon(C), hydrogen(H) and oxygen (O) in 2:1 ratio.
The carbohydrates play significant roles in organisms as:
1. Source of energy : undergo breakdown to provide energy.
2. Storage form: glycogen in animals and starch in plants.
3. Structural role: cellulose in plant cell wall provide the structural hardness and rigidity to the cell wall. Cellulose is a polysaccharide formed by the polymerization of D-glucose via f β-1,4 linkage in linear fashion.
Thus, option A is the correct answer.
Answer:
A
Explanation:
Adding salt to water causes its density to increase. Denser water will sink below less dense water.
Answer:
The trait is Y-linked
Explanation:
The only plausible explanation behind the inheritance pattern shown by the porcupine trait is that it is <u>Y-linked</u>.
<em><u>Y-linked traits are limited to the Y chromosome only</u></em><em>, a sex chromosome that is peculiar to only the male gender. Chromosomally, females are XX while males are XY. Hence, only the male gender has the genetic capacity to inherit the porcupine trait. This is why only the sons of Edward Lambert, and never the daughters, exhibited the trait. </em>
Answer;
-Distal end
Explanation;
-The part of the esophagus that is farthest from its beginning at the throat is the distal end.
-The esophagus is a muscular tube connecting the throat with the stomach. It is about 8 inches long, and is lined by moist pink tissue called mucosa.
-Both ends of the esophagus are closed off by muscular constrictions known as sphincters; at the anterior, or upper, end is the upper esophageal sphincter, and at the distal, or lower, end is the lower esophageal sphincter.
D. Chromosomes as mitosis is essentially asexual reproduction and the offspring is the same as the parent cell