Answer:
Photosynthesis takes place in two stages: light-dependent reactions and the Calvin cycle. Light-dependent reactions, which take place in the thylakoid membrane, use light energy to make ATP and NADPH. The Calvin cycle, which takes place in the stroma, uses energy derived from these compounds to make GA3P from CO2.
The correct answer for this question would be the fourth option. Deletion of genes around the centromere is considered a pericentric inversion. The Pericentric inversions include the centromere and there is a break point in each arm. <span>Deletions and duplications occur during crossing over during the inversion which results in recombination in two loops. </span>
Answer:
A mutation is a change that occurs in our DNA sequence, either due to mistakes when the DNA is copied or as the result of environmental factors such as UV light and cigarette smoke. Mutations can occur during DNA replication if errors are made and not corrected in time. Mutations can also occur as the result of exposure to environmental factors such as smoking, sunlight and radiation. Often cells can recognize any potentially mutation-causing damage and repair it before it becomes a fixed mutation.
Mutations contribute to genetic variation within species. Mutations can also be inherited, particularly if they have a positive effect. For example, the disorder sickle cell anaemia is caused by a mutation in the gene that instructs the building of a protein called hemoglobin. This causes the red blood cells to become an abnormal, rigid, sickle shape. However, in African populations, having this mutation also protects against malaria.
However, mutation can also disrupt normal gene activity and cause diseases, like cancer. Cancer is the most common human genetic disease; it is caused by mutations occurring in a number of growth-controlling genes. Sometimes faulty, cancer-causing genes can exist from birth, increasing a person’s chance of getting cancer.
In test tube B i.e., egg, albumin, pepsin and HCl the digestion of protein will occur as HCl will breakdown protein into simple molecules.
- Pepsin will be activated by HCl to break down proteins into their simpler constituents.
- Some enzymes, like pepsin in this instance, are activated by HCl in a catalytic manner.
- Gastric juice is a mixture of lipase, other digestive enzymes, and the least amount of diluted hydrochloric acid required for digestion.
- Pepsin, a digestive enzyme found in the stomach that aids in the breakdown of dietary proteins, is also present in this gastric fluid.
- Foods like milk, beef, and other dairy products are high in protein, which is broken down into smaller molecules for digestion.
- The pepsin is activated by the HCl in gastric juice. The protein intake is then catalyzed by the enzyme pepsin, which causes it to be broken down into smaller peptide molecules.
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A student sets up an experiment to study the role of enzymes in digestion of food. In test tube A, he added egg albumin and pepsin. In test tube B, he added egg albumin, pepsin and HCl. In which test tube, the digestion of protein will occur? *
Test tube A as pepsin will breakdown into simple molecules.
Test tube B as HCl will breakdown protein into simple molecules.
Test tubes A as pepsin will breakdown protein into simple molecules.
Test tube B as HCl will activate pepsin for breakdown of protein into simple molecules.
I think it's A , and i find D doesn't make sense ..
