Biology
Distinguish between the following pairs:
Enzymes and hormones (chemical composition and mode of action)
Answer
Difference between enzymes and hormones (chemical composition and mode of action):
| Enzymes | Hormones |
|---|---|
| Enzymes are protein in nature. | Hormones are peptides, amines or steroids. |
| Enzymes are substrate specific. These are present in all cells and show their activity there. | Hormones are specific to the target cell, tissue, or system. They are produced at one site and show their activities at other sites. |
Related Questions
The diagram given alongside shows an endocrine gland in the human body. Study the diagram and answer the following questions :
(a) Identify the gland. Write its specific location in the human body.
(b) Label the guidelines 1, 2 and 3 shown in the figure.
(c) Name any two secretions from part 1 and two from part 2.
(d) The deficiency of which hormone causes Diabetes insipidus? How is this condition different from Diabetes mellitus with respect to the abnormal substances present in the urine.
Human height is mainly controlled by genetic factors but hormonal secretion is also equally important in regulating the height. Study the figures given below and answer the questions that follow :
(a) Which of the above figures (A/B/C) is suffering from hyposecretion of the growth hormone?
(b) Name the disorder shown in figure A.
(c) Mention the gland which secretes 'Growth Hormone'.
Compare the hormonal response with the nervous response with respect to their speed, transmission and general nature of changes brought about.
Mention three important differences between the action of hormones and that of nerves in the regulatory mechanism of our body.