Answer:
The original water sample contains 830,000 cells per milliliter.
Explanation:
A sample of well water is tested for its bacterial content in a plate count assay. A one-milliliter sample of the water is diluted in a 1:10 dilution series. One milliliter of the fourth dilution tube is plated in a pour plate. After incubation, the plate has 83 colonies, indicating that the original water sample contained 830,000 cells per milliliter.
Answer:
The cells of the visual cortex are neurons in the brain's visual system that respond to particular features of a stimulus.
Explanation:
These neurons respond to stimuli presented to both eyes. Simple cells receive innervation directly from thalamic cells and respond to light stimuli with defined orientation and with specific configuration and location in the visual field. Complex cells also respond to the orientation parameter.
These cells trigger action potentials when the visual stimulus appears within their receptive field.
Answer:
Option B, C, D and E
Explanation:
While conducting research on human being, following conditions must be fulfilled
a) The subject must be made aware of the risk and result of the study
b) Subject must be aware of the study objective, time duration and post study impacts
c) Subject must be compensated for any injury caused during the study
d) Informed consent must be taken from the subject
e) The subject must beware of the possible uncontrollable scenarios. Also the test conducted must be testifiable on human being
f) The ill effects of the study can be anticipated if the result obtained are worthy enough
Considering the above facts, option B , C, D and E are unavoidable
Sea snails help to keep the algae's population from growing to high. And the algae provides the sea snails with energy from the snails eating it as a food source.
