Answer:
Raw shellfish may be contaminated with harmful bacteria and viruses, and therefore carries a higher risk of food poisoning.
Explanation:
You’re naturally more susceptible to food poisoning during pregnancy because of changes to your metabolism and circulation, and as well as being unpleasant for you, food poisoning can increase the risk of premature delivery and infections in your baby
D. All of the above. Groundwater is one of our most important sources of water for irrigation and is polluted by many man-made factors which permeate through the ground.
The correct ones are:
- Differential gene expression affects the developmental process in animals.
- Positional information controls pattern formation.
- Homeotic genes code for transcription factors that control the development of segment-specific body parts.
- Cells receive molecular signals that communicate their position in relation to other cells.
Gene expression is the process by which information from a gene is used in the synthesis of a functional gene product, allowing it to produce end products such as protein or non-coding RNA and, as a result, affect a phenotype.
A homeotic gene is any of a group of genes that control the pattern of body formation in organisms during early embryonic development. These genes encode proteins known as transcription factors, which direct the formation of various body parts.
Molecular signaling refers to molecules that transmit information between cells in the body. However, the molecular properties of signaling molecules can vary greatly.
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Answer:
1. The oxygen deprived cardiac muscles caused chest pain.
2. Unavailability of oxygen and blood supply to skin cells made them pale and cold.
3. Accumulation of blood in pulmonary circuit caused moist sounds.
Explanation:
The left ventricle receives oxygenated blood from the left atrium. Oxygenated blood from the lungs is carried to the left atrium by pulmonary veins. The left ventricle pumps the oxygenated blood to all body parts through the aorta. Failure of the left ventricle deprived the skin cells of oxygenated blood. Oxygen deficiency stopped energy production by cellular respiration. The result was pale and cold skin.
Failure of the left ventricle led to the accumulation of blood in the pulmonary circuit since the blood was not delivered to body tissues. The build-up of blood and resultant higher blood pressure caused moist sounds in the lower lungs.
The blockage of the coronary artery by a blood clot and death of a part of the heart due to lack of oxygen leads to a heart attack. The dead heart tissue is known as infarct and the resultant heart attack is myocardial infarction. Chest pain is caused due to the dead heart tissue or infarct.