Answer:
Ethics can be described as a set of moral rules which are necessary to distinguish between the right and wrong. Ethics is very necessary for science as the field of science especially scientific research would become deadly if ethics are not followed. If ethics are not followed, scientists will begin killing of organisms and humans to support science projects. Human cloning will become a non- serious matter in ethics are not followed. Hence, commitment to ethics is very important in science.
Answer:
The presence of cholesterol in the plasma membranes of some animal cells <u>enables the membranes to stay fluid when cell temperature drops</u>.
Explanation:
Cholesterol is an essential lipid in the basic structure of cell membranes. The membranes must have a fluid structure so that the proteins integrated in them can move ''horizontally'' to interact with their ligands and with other proteins. With excess saturated fat the membranes become rigid, but only with the necessary unsaturated fat the membranes are extremely fluid, and very sensitive to changes in temperature. Cholesterol stabilizes the structure of the membranes; preventing the collapse and crystallization between lipid chains that would lead to loss of fluidity and excessive rigidity in the membrane. By decreasing the temperature; as temperatures drop, fluidity decreases, an effect that partially counteracts the presence of cholesterol.
The answer is thermoregulation
Human is a warm blooded animal so they have to control their internal temperature. Eccrine glands is the synonym of sweat glands. Sweat has an important role to release heat as they will wet the skin, allow it to evaporate in huge area. If the sweat glands doesn't work, the person will have difficulty to dissipate heat when the body temperature increases.
Answer:
Nicholas Steno
Explanation:
Nicholas Steno who was a Catholic priest establish relationship between sedimentary rock layers otherwise called stratigraphy.
Stratigraphy is a branch of geology that deals with the study of rock layers. He established theoretical law of stratigraphy by introducing law of superimposition, principle of original horizontality and the principle of lateral continuity in 1669 work of fossilization of organic matter sediments.
Animals don’t need to absorb sunlight in order to live. Only plants have chloroplasts to absorb the rays from the sun which is required for them to live and grow
