B) enzymes; Enzymes<span> act as </span>catalysts<span> in the body for biochemical reactions. Many of the drugs created by rational drug design are used to activate or inhibit </span>enzymes<span> to alter the bodies reaction to conditions such as </span>diabetes<span>.</span>
I would say the formation oxygen from water because she is studying and looking for oxidation.
<span>Out
of the following given choices;</span>
<span>A. </span><span>symbiote. C. capacity limiter</span>
<span>B.
</span><span>producer. D. limiting factor
</span>
The answer is D. Limiting factors limit the ideal growth rate
of a population. Examples of these limiting factors include space (low space)
and food (scarce food). These limiting factors would limit the population growth
rate either by causing emigration, increases birth rate, and decrease birth
rate.
The approximate LD50 of the least toxic substance will be 130 mg/Kg.
- The dose necessary to cause the death of 50% of a population under test after a predetermined test period is known as the LD50 value for a drug.
- Commonly used as a broad indicator of a substance's acute toxicity are LD50 values.
- Greater toxicity is indicated by a lower LD50. A low LD50 of 500 mg/kg or less implies severe toxicity.
- Moderate toxicity is indicated by an LD50 of 500 to 1,000 mg/kg. A modest toxicity level of 1,000 to 2,000 mg/kg is indicated.
- The species is especially vulnerable to the poison if the LD50 is low. The lethal dose (LD50) of a specific poison might change significantly between several animal species.
- Thus out of all the options, LD50 130 mg/kg will have the lowest toxicity and 20 mg/kg will be the highest.
learn more about LD50 here: brainly.com/question/24845532
#SPJ1
