Identify three ways in which the evolution of photosynthetic autotrophs affected either the atmosphere or other
organisms. What will be an ideal response?
1. Photosynthetic organisms changed the atmosphere from an anaerobic to aerobic
atmosphere.
2. Oxygen in the atmosphere created an environment for evolution of aerobic organisms
which were capable of producing more energy for organisms’ growth and development .
3. Oxygen in the atmosphere poisoned obligate anaerobes.
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The main class of neurotransmitters involved in regulating mood in vertebrate animals is/are
A. the biogenic amines. B. acetylcholine. C. amino acids. D. gases such as nitric oxide and carbon monoxide. E. acetylcholine and amino acids.
Each of the following is a component involved in the SNARE hypothesis model mechanism except
A) v-SNARE. B) Rab GTPase. C) tethering complex. D) NSF protein. E) All are involved.
Proto-oncogenes can be converted to oncogenes by:
a. mutation. b. tumor suppressor genes. c. growth factors. d. transcription factors. e. infection by certain viru
Which of the following should be the general rule to follow in a weight training program that increases muscle strength?
What will be an ideal response?