Enzymes are biological catalysts. Catalysts lower the activation energy for reactions. The lower the activation energy for a reaction, the faster the rate. Thus enzymes speed up reactions by lowering activation energy.
C they are always found in homologous pairs
Answer:
They became closer to each other.
Explanation:
When skeletal muscles contracts the Z lines that are at the end of every sarcomere became closer to each other due to the fact that the I bands that are attached to the Z lines and contains the myosin filaments move closer to each other interacting with the actin filaments and shorten the the H zone that is in the middle of the sarcomere. In other words, It all becomes compact during a contraction.
Answer:
The answer is B.
Explanation:
A is incorrect because B is correct (plants are autotrophs).
C is incorrect because the first stage of cellular respiration is glycolysis, and the second is the Krebs cycle, neither of which require oxygen.
D is incorrect because cells take in oxygen to perform cellular respiration. Carbon dioxide is the product.
Answer: Scientists must be concerned about the impacts it causes on normal people due to aging.
Explanation:When a healthy human takes the growth hormone they do not any side effects or symptoms at the early stage. Once they start aging they have joint and muscle pain in legs and arms earlier than other people of their age and also result in diabetes, blood pressure and heart and lung diseases.
The Human growth Hormone can also cause tumors in brain and also indulge in growth and development of Cancer Cells in people who has cancer or had been diagnosed before.So these are the main side effects that scientists should rectify in Human Growth Hormone.
