Chloroplast<span> Function. </span>Chloroplasts<span> are very similar to </span>mitochondria<span>, but are found only in the cells of plants and some algae. Like </span>mitochondria<span>, </span>chloroplasts<span> produce food for their cells. </span>Chloroplasts<span> help turn sunlight into food that can be used by the cell, a process known as photosynthesis.</span>
Answer:
The alcohol group will have produced the greatest volume of urine
The concentrated salt solution group will have produced the least volume of urine
Explanation:
Alcohol inhibits the antidiuretic hormone. This hormone, also known as vasopressin hormone, is released by changes in serum osmolarity or blood volume. Its function is to keep homeostasis and make kidneys conserve or keep water by concentrating urine and by reducing its volume. By these actions, the antidiuretic hormone stimulates water reabsorption, acording to the organism´s needs. The antidiuretic hormone is very sensitive to the presence of alcohol in the blood. Alcohol inhibits the hormone production and the kidneys eliminate more water than the necessary volume. In other words, alcohol is a diuretic substance that enhances urine production.
Salt ingestion causes an increase in plasmatic osmolarity, stimulates thirst and hence, water ingestion. It also causes an increase in the antidiuretic hormone, which anhances in water reabsorption by the kidneys in its collector tubules. Salt consumption causes a change in osmolarity, which drives to an increase in water reabsorption and an important reduction in urine volume.
Answer:
im not smart but i love chicken
Explanation:
bc
Answer:
The preceding section reviewed the major metabolic reactions by which the cell obtains and stores energy in the form of ATP. This metabolic energy is then used to accomplish various tasks, including the synthesis of macromolecules and other cell constituents. Thus, energy derived from the breakdown of organic molecules (catabolism) is used to drive the synthesis of other required components of the cell. Most catabolic pathways involve the oxidation of organic molecules coupled to the generation of both energy (ATP) and reducing power (NADH). In contrast, biosynthetic (anabolic) pathways generally involve the use of both ATP and reducing power (usually in the form of NADPH) for the production of new organic compounds. One major biosynthetic pathway, the synthesis of carbohydrates from CO2 and H2O during the dark reactions of photosynthesis, was discussed in the preceding section. Additional pathways leading to the biosynthesis of major cellular constituents (carbohydrates, lipids, proteins, and nucleic acids) are reviewed in the sections that follow.
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Carbohydrates
In addition to being obtained directly from food or generated by photosynthesis, glucose can be synthesized from other organic molecules. In animal cells, glucose synthesis (gluconeogenesis) usually starts with lactate (produced by anaerobic glycolysis), amino acids (derived from the breakdown of proteins), or glycerol (produced by the breakdown of lipids). Plants (but not animals) are also able to synthesize glucose from fatty acids—a process that is particularly important during the germination of seeds, when energy stored as fats must be converted to carbohydrates to support growth of the plant. In both animal and plant cells, simple sugars are polymerized and stored as polysaccharides.
Gluconeogenesis involves the conversion of pyruvate to glucose—essentially the reverse of glycolysis. However, as discussed earlier, the glycolytic conversion of glucose to pyruvate is an energy-yielding pathway, generating two molecules each of ATP and NADH. Although some reactions of glycolysis are readily reversible, others will proceed only in the direction of glucose breakdown, because they are associated with a large decrease in free energy. These energetically favorable reactions of glycolysis are bypassed during gluconeogenesis by other reactions (catalyzed by different enzymes) that are coupled to the expenditure of ATP and NADH in order to drive them in the direction of glucose synthesis. Overall, the generation of glucose from two molecules of pyruvate requires four molecules of ATP, two of GTP, and two of NADH. This process is considerably more costly than the simple reversal of glycolysis (which would require two molecules of ATP and two of NADH), illustrating the additional energy required to drive the pathway in the direction of biosynthesis.
1. Interphase: Chromosomes duplicate
2. Prophase: Chromosomes pair up
3. Metaphase: Chromosomes line up at equator
4. Anaphase: Chromatid sisters pulled apart
5. Telophase: Cells begin to divide
6. Cytokinesis: Two daughter cells are formed
