Answer:
Muscles produce keratin so that hair can grow stronger. Sweat glands break down the food that is consumed. Muscles contract rapidly to produce heat on a cold day.
Explanation:
Answer:
The effectiveness of chemical disinfectants has historically been compared to phenol.
Explanation:
The effectiveness of a disinfectant or antiseptic can be determined in a number of ways. Historically, a chemical agent’s effectiveness was often compared with that of phenol, the first chemical agent used by Joseph Lister. In 1903, British chemists Samuel Rideal (1863–1929) and J. T. Ainslie Walker (1868–1930) established a protocol to compare the effectiveness of a variety of chemicals with that of phenol, using as their test organisms Staphylococcus aureus (a gram-positive bacterium) and Salmonella enterica serovar Typhi (a gram-negative bacterium). They exposed the test bacteria to the antimicrobial chemical solutions diluted in water for 7.5 minutes. They then calculated a phenol coefficient for each chemical for each of the two bacteria tested. A phenol coefficient of 1.0 means that the chemical agent has about the same level of effectiveness as phenol. A chemical agent with a phenol coefficient of less than 1.0 is less effective than phenol. An example is formalin, with phenol coefficients of 0.3 (S. aureus) and 0.7 (S. enterica serovar Typhi). A chemical agent with a phenol coefficient greater than 1.0 is more effective than phenol, such as chloramine, with phenol coefficients of 133 and 100, respectively. Although the phenol coefficient was once a useful measure of effectiveness, it is no longer commonly used because the conditions and organisms used were arbitrarily chosen.
Answer:
B. ) Nucleic acids to amino acids
Explanation:
Translation happens after DNA has already been copied into RNA and is now going to be translated from its form as RNA to a protein/ Amino Acid.
The correct answer is: D) Lymph transport depends on the movement of adjacent tissues, such as skeletal muscles.
The lymphatic system is an open system which primarily consists of lymphatic vessels, (similar to the circulatory system's veins and capillaries) interrupted by lymph nodes, where the lymph is filtered. Since there is no central pump in lymphatic system (like heart in circulatory system) lymph transport, is slow and sporadic. Lymph movement occurs due to:
• peristalsis (contraction and relaxation of smooth muscle tissue),
• valves,
• contraction of adjacent skeletal muscle and
• arterial pulsation.
