Answer: The correct answer is from areas of high concentration to low concentration.
Explanation: Diffusion, by definition, is the process of molecules (any molecule) going down their concentration gradient (i.e. they are going from higher concentration to lower concentration). Hope that helped!
Answer:
Amino Acids are a type of organic compound that can combine to from proteins. Foods with good Amino Acids include meat, eggs, tofu, soy and dairy. The key elements of an amino acid are carbon, hydrogen, oxygen, and nitrogen.
The statement above is false. The blood levels of calcium is regulated by parathyroid hormone.When one is not getting adequate calcium in one's diet and the blood level of calcium is low, the parathyroid hormone will be released. The parathyroid hormone can increase the blood calcium in several ways:
1. by stimulating osteoclasts which break down bone and release calcium into the blood stream.
2. by increasing the amount of calcium re-absorbed by the kidney before it can be excreted in urine.
3. by triggering the formation of calcitriol which increases the absorption of dietary calcium at the intestines.
Garstang's Auricularia hypothesis suggests that ancestral vertebrates may have evolved from urochordate larvae.
What is Garstang's Auricularia?
The auricularia hypothesis, proposed by Garstang was an attempt to explain how the chordate body plan originated from a deuterostome common ancestor by emphasizing the significance of changes in larval forms. According to the Garstang Hypothesis, development of sexual maturity in a non-metamorphosing lineage of tunicates might provide the immediate proto-chordate ancestors of more typical chordates.
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These biomoleules are found in following cellular structures.
<span>Carbohydrates- Cell wall, Golgi apparatus </span>
<span>Proteins- Plasma membrane, Endoplasmic reticulum, nucleus, cytoplasm, mitochondria, chloroplast etc. </span>
<span>Lipid- Plasma membrane, cytoplasm </span>
<span>Nucleic acid- Nucleus, chromosomes, mitochondria, chloroplast, ribosomes.</span>
