D because it would make it worse since significantly warmer areas are due to human activities
Answer:
E. 3, 6, 7, 4, 5, 8, 1, 2
Explanation:
Systemic circulation is the circulatory pathway which is involved in the transport of the oxygenated blood to the body when pumped by the heart through arteries, capillaries and then back to the heart.
In the given question, the order of vessels in the systemic circulation has been asked which begins with the entry of the deoxygenated blood to the heart.
1. The deoxygenated blood enters the blood from vena cava to the right ventricle.
2. From the right ventricle, the blood enters the right atrium which pumps the de-oxygenated blood to the lungs through an artery called the pulmonary artery.
3. In the lungs, the blood becomes oxygen rich and is returned to the left atrium through the pulmonary vein.
4. The blood then enters the left atrium which is then pumped to the body through the main artery called the aorta.
This completes the systemic circulation and thus, Option-E is correct.
Answer:
B. The inducer combines with the repressor and inactivates the repressor.
Explanation:
A repressor is a negative regulatory protein. It inhibits transcription when bound to DNA. The inducer is a molecule that binds to a repressor protein. Binding of inducer to the repressor converts it into an inactive form. The inactive repressor is unable to prevent transcription. Therefore, when the inducer is added to the medium, it would bind to the repressor to inactivate it.
For example, the repressor protein of lac operon binds to the operator region and does not allow the expression of the lac operon. When lactose is present in the medium, few of the lactose molecules enter the bacterial cell and are converted into allolactose which in turn binds to the repressor protein. Binding of allolactose to repressor protein alters the shape of the repressor protein in such a way that it is no longer able to bind to the operator region. Here, allolactose is the inducer.
<span>He or she would need 490 grams of carbohydrate. Carbohydrates replace fuels used during exercise, and it is recommended to eat a high carbohydrate meal two hours after one exercises. Carbohydrates are also used for brain function and the operation of organs.</span>
