Explanation:
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Answer:
The correct option is B, THE LOCATION OF THE FOSSILS WERE ONCE MUCH CLOSER TO EACH OTHER.
Explanation:
The discovery of identical species of organisms at different location on the earth continent has been explained by the theory of plate tectonic. The theory of plate tectonic states that the outer layer of the earth is divide into several plates, which are capable of moving around the earth in relative positions to one another.
Using the theory of plate tectonic, the geologists in this question will conclude that the fossils discovered at different sides of the ocean were closer together before, but were moved away from each other as a result of the process of plate tectonic.
Answer:
The fragment and plasmid are both cut with the same restriction enzyme.
Explanation:
To insert a piece of DNA in a bacterial plasmid, we need to cut both plasmid and DNA insert from same regions. This is typically done by restriction enzymes or restriction endonuclease. This cutting will open the plasmid (which is circular initially) and produce <u>sticky ends.</u> Here, DNA insert can attach because of similar sequence (see attached figure). In the final step, DNA ligase will glue it in the plasmid and it will become its part. This technique has been extensively used as a DNA recombinant technology. A better representation can be seen in the attached figure where both DNA sequence of interest and plasmid are cut with the same restriction enzyme (shown as scissors) and then ligated with DNA ligase.
Answer:
1. The oxygen deprived cardiac muscles caused chest pain.
2. Unavailability of oxygen and blood supply to skin cells made them pale and cold.
3. Accumulation of blood in pulmonary circuit caused moist sounds.
Explanation:
The left ventricle receives oxygenated blood from the left atrium. Oxygenated blood from the lungs is carried to the left atrium by pulmonary veins. The left ventricle pumps the oxygenated blood to all body parts through the aorta. Failure of the left ventricle deprived the skin cells of oxygenated blood. Oxygen deficiency stopped energy production by cellular respiration. The result was pale and cold skin.
Failure of the left ventricle led to the accumulation of blood in the pulmonary circuit since the blood was not delivered to body tissues. The build-up of blood and resultant higher blood pressure caused moist sounds in the lower lungs.
The blockage of the coronary artery by a blood clot and death of a part of the heart due to lack of oxygen leads to a heart attack. The dead heart tissue is known as infarct and the resultant heart attack is myocardial infarction. Chest pain is caused due to the dead heart tissue or infarct.
"Complex Carbohydrates" are l<span>iving organisms break down polysaccharides into simple sugars. Complex carbohydrates are made up of sugar molecules. They are like strings that is long and complex chains. They can be found on foods like beans, whole grains, vegetables, and peas. They are converted into glucose in the body which serves as the source of energy of the body.</span>
