Genetic engineers would like to insert the gene for producing thrombin, a protein that facilitates also blood clotting and also helps patients to survive hemophilia. They inserted the gene into simple organisms such as the Lactobacillus family of bacteria as their vector to manipulate easily the production of the target protein. Mr. Molina is one of the genetic engineers who is in favor of using bacteria as vectors. Which is the following statements best justifies Mr. Molina's inclination toward using bacteria as vectors? O Prokaryotic organisms are ubiquitous and can also multiply so fast at any time under any condition. O Bacteria as well as all viruses use reverse transcriptase to facilitate successfully the production of thrombin. O Bacteria are capable of self-replication and can produce multiple copies of the gene. O Bacteria are a good choice as vectors since they have multiple origins of replication.
Anatomy and Physiology of Special Sensory Organs
Sensory organs can be labeled as special sensory structures that permit sight, hearing, odor, and flavor. Sensory structures permitting proprioception, touch, thermal, and pain perception can be classified as more advanced sensory organs. The sensory neurons are trained to find out modifications in the external and internal conditions so that a person's body can react to that change. A stimulus is the first signal that is recognized by any sensory receptor of the body. Stimulus is an impulse generated when there is a change in the surroundings of a person. For example, a heated environment will alert the brain through the thermal sensory organs and generate a reflex accordingly.
Sensory Receptors
The human sensory system is one of the most complex and highly evolved structures, which processes a myriad of incoming messages. This well-coordinated system helps an organism or individual to respond to external stimuli, appropriately. The sensory receptors are an important part of the sensory system. These receptors are specialized epidermal cells that respond to external environmental stimuli. These receptors consist of structural and support cells that form the peripheral unit of the receptor and the neural dendrites which receive and detect the external stimuli.
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