b. coral reefs
c. rivers
d. ponds
B. coral reefs because marshes, rivers and ponds have nothing to do with the ocean ecosystem.
Answer:
Arteries
Explanation:
There are three main types of blood vessels: veins, arteries, and capillaries. Arteries are the blood vessels that carry the oxygenated blood from the heart to various body parts. Veins pick the deoxygenated blood and deliver it to the heart to be oxygenated.
Arteries are the blood vessels with thick walls and no valves. Blood is pumped with higher pressure from the heart into arteries. The pulmonary artery is the only exception that carries deoxygenated blood from the right ventricle to the lungs for oxygenation.
Arteries carry oxygen-rich blood in the body, supplying oxygen to the tissues.
Arteries carry oxygen-rich blood in the body. Specifically, in the systemic circuit, arteries provide oxygen-rich blood to the body's tissues. On the other hand, in the pulmonary circuit, arteries carry oxygen-poor blood to the lungs for gas exchange.
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b. animal cells contain mitochondria. plant cells do not.
c. animal cells contain chloroplasts. plant cells do not.
d. plant cells are surrounded by a cell wall. animal cells are not.
The statement that correctly describes a difference between plant and animal cell is ; ( D )
Eukaryotic cells which includes plants and animals cells have similar characteristics and slight differences. The main difference between a plant cell and an animal cell is the presence of cell wall in plant cells ( for the purpose of rigidity and protection ) and the absence of cell wall in animal cells and this is because animal cells are not rigid in nature and the cell membrane provides protection and shape for the animal cell.
Hence we can conclude that the the difference between the plant cell and animal cell is, Plant cells are surrounded by a cell wall and animal cells are not.
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Answer:
D) Plant cells are surrounded by a cell wall. Animal cells are not.
Explanation:
Plant cell needs cell wall whereas animal cell do not because the plants need rigid structure so that they can grow up and out, thus animal cells do not have cell walls. So therefore, D is the correct answer.
b. RNA has uracil, DNA has thymine
c. RNA is single-stranded, DNA is a double-helix
d. all of the above
Answer:
d. all of the above is the correct answer.
Explanation:
These are the main difference between RNA and DNA
thus the all the above(D) options are correct.
RNA and DNA differ in three major areas: the types of sugars they contain, the bases they use, and their structure. RNA contains ribose sugars and the base uracil, while being single-stranded. In contrast, DNA contains deoxyribose sugars, the base thymine, and has a double helical structure.
RNA and DNA, which can both be found in cells, have several significant differences. To answer your question, the correct choice would be (d) all of the above because:
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