The answer is D, Because dinosaurs appears in the Triassic period while insects appeared in the Devonian period which is about 160 million years about, which rules out A and B. Humans have been on Earth for almost 3 million years, which is nothing compared to the history of life in earth, which about 4,000 million years of life history, so D
Answer: Biological
Explanation:
Women experience different types of eating disorders as compared to men this shows that the biological factor affects the psychopathology.
There are many different types of the eating disorders. The disorders like anorexia nervosa, bulimia nervosa, rumination are some of the eating disorder which is seen in females.
These disorders are common in females more than male. These factors show that the psychopathology is somewhere related to the biology.
1. outer covering - none of the other answers can occur due to the absorbed solutions inability to reach the centre of the organism, smaller cells in greater numbers are more efficient as they can group together yet all absorb the right amounts of nutrients for its need. multi cellular organisms, such as humans can have the other answers in them as cells group together to make skin, muscles and organs. it also gives the organism to grow larger.
2. bacteria are single celled. bacteria reproduce through mitosis (cell division). bacteria break down decaying matter to obtain energy. every organism requires energy to live. Bacteria can move in order to reach their nutrient source.
Answer:
a) recovered from pituitary glands removed from human cadavers.
Explanation:
- The human growth hormone is responsible for growth along with cellular proliferation and reproduction in humans.
- The hormone is secreted by the pituitary gland.
- Therefore, before the recombinant DNA techniques were available the hormone was isolated from the pituitary glands fo human cadavers.
- However, this method was not continued because the extract hormone became a source of infection for diseases such as the Creutzfeldt-Jakob disease.
- Therefore, alternatives were looked for and with the advent, in recombinant DNA techniques, the scientist was able to successfully make the recombinant human growth hormone as well.
