Answer:
Lipids (fats) and carbohydrates
Explanation:
Carbohydrates can be directly broken into glucose for use in cellular respiration. Lipids are used to store energy for extended periods of time. Proteins can be used for energy, but are not as efficient or quick as the previously mentioned macromolecules.
A is the answer
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Answer:
B
Explanation:
Water moves from higher potential to lower potential i.e it moves from surounding to the cell.
Answer: All the above options are correct about the characteristics of Lumbriculus variegatus.
Explanation:
Lumbriculus variegatus also called the black worm belongs to the phylum Annelida and is used by biologists to illustrate:
-blood vessel pulsations,
-swimming reflex,
-peristaltic crawling behavior,
-giant nerve fiber action potentials.
These studies where carried out on them due to the characteristics they possess. These includes:
-its blood circulates in a closed circulatory system
-Freshwater worm found throughout North America and Europe
-Prefers the shallow habitats found at the edges of ponds, lakes, or marshes
-Feeds on decaying vegetation and microorganisms.
Answer:
2. blood vessels under the skin expand
Explanation:
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