........................, a stool guaiac test was done to DETERMINE THE PRESENCE OF HIDDEN BLOOD IN THE FECES.
The stool guaiac test is one of the tests used in the medical laboratory to detect the presence of occult fecal blood. The test is very sensitive and can detect even minute traces of blood in feces. The test is typically done to detect the presence of blood in the digestive tract. A negative result obtained for the test implied that there is no stool in the blood.
Answer:
B. increased precipitation upwind of the city
Explanation:
The urban heat island effect, causes increased in the precipitation of upwind in the city. The warmer temperatures in cities, creates unstable air which leads to rain. Air is unstable when it is warmer than the air around it. The warm, unstable air starts to rise. The air cools as it rises, which allows water vapor within it to condense and form clouds. If the warm, rising air was carrying enough water vapor, those clouds can grow into rainclouds.
Answer:
A catalyst is a substance that can be added to a reaction to increase the reaction rate without getting consumed in the process. Catalysts typically speed up a reaction by reducing the activation energy or changing the reaction mechanism. Enzymes are proteins that act as catalysts in biochemical reactions
Explanation: I don't know if this will help but hopefully it does
Answer:
Chromatin is responsible for gene expression.
Explanation:
Chromatin is responsible for gene expression because chromatin contains DNA that has all information about genes. chromatin controls the gene in order to form encoded products. DNA in chromatin send information to the RNA to produce specific types of proteins that are needed by the organisms for its growth and development so in that way the genes can be expressed in the organism.
The circulatory system and respiratory system are protected by your skin, muscles, and ribs.
