The Calvin cycle is called the dark cycle because it does not require
light to proceed. Unlike light reactions, the Calvin cycle is a
light-independent reaction, which means it can and will occur in the
dark as well as the light. The Calvin cycle is called the dark cycle
because it does not require light to proceed.
hope this helps :p
Answer:
Explanation:
The structure of the two endoplasmic reticulum makes the difference.
Endoplasmic reticulum (ER) is located in the cytoplasm membrane in the eukaryotes and its divided into two the rough and smooth endoplasmic reticulum.
Rough ER has ribosomes which gives it the name rough because of its appearance. The ribosomes on rough ER helps it to specialize in the synthesis of proteins. proteins in a cell, are synthesize by it. The smooth endoplasmic reticulum lacks ribosome in its structure and cannot synthesize protein but lipids.
Answer:
1. Endocrine
2. Exocrine
Explanation:
The pancreas serves as both endocrine and exocrine gland.
The pancreas is an exocrine gland as the pancreatic acini produce digestive enzymes that are delivered to the small intestine through a network of ducts. The glands that release their secretions by ducts are called exocrine glands.
Islets of Langerhans scattered among pancreatic acini serve the endocrine part of the pancreas. The alpha cells of pancreatic islets secrete hormone glucagon while the beta cells of the islets secrete the hormone insulin directly in the bloodstream. Likewise, the delta cells of pancreatic islets secrete hormone somatostatin. The ductless glands that release their secretions directly into the bloodstream are known as endocrine glands.
The 4 types of organic compounds and their subdivisions within living organisms are:
1. Carbohydrates:
- Monosaccharides,
- Oligosaccharides,
- Polysaccharides.
2. Lipids:
- Fats,
- Phospholipids,
- Waxes,
- Sterols.
3. Proteins:
- Primary structure (amino acid sequence),
- The secondary structure,
- The tertiary structure,
- The quaternary structure.
4. Nucleic acids:
- DNA (deoxyribonucleic acid),
- RNA (ibonucleic acid).
I'd say that the mechanism which might keep Rana aurora and Rana boylii from mating is B. temporal isolation, since their breeding seasons do not occur at the same time.
It is not anatomical isolation, since they are both frogs. It is not geographic isolation, since they meet in California. It is not behavioral isolation since they both have breeding seasons.
