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NikAS [45]
3 years ago
12

Describe three ways that drugs affect synapses that use the neurotransmitter dopamine

Biology
1 answer:
Keith_Richards [23]3 years ago
5 0
The three ways in which drugs affect the synapses include; they affect the number of neurotransmitters available, the rate of release of neurotransmitters, and binding affinity of neurotransmitter receptors to the neurotransmitters.  For example; Drugs can affect the production of neurotransmitters, movement of neurotransmitters into vesicles, or movement of vesicles to a synapse.
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Ringworm is caused by toxins produced by dermatophytes. mycosis that has invaded the blood stream. dermatophytes growing in the
Nonamiya [84]

Answer: the correct answer is dermatophytes growing in the outer dead tissue layers of the skin (epidermis).

Explanation:

Ringworm isn't a worrm but it is an infection caused by moldlike fungi that live in the dead tissue of your skin, hair or nails.

8 0
3 years ago
Most early successional species are
Bond [772]
B is the answer for real
7 0
3 years ago
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1. Describe DDT and summarize the history of the use and banning of DDT, including actions taken by the U.S. government. State t
igomit [66]

DDT stands for  dichloro-diphenyl-trichloroethane. The first kind of synthetic/artificial insecticides came into use in the 1940s. The earlier usage of DDT include:  a) Killing of malarial vectors, b) Combatting Typhus and other insect borne human diseases, c) As a pest control in crops d) as a pest control in garden, live stock production and even at homes.  

The negative impact of DDT could be felt for the first time when the pests that were earlier killed by use of DDT have now become pesticides resistant. In the 1950s in USA, the regulatory measures were adopted to reduce the usage of DDTs as its effects as a pesticides were no more long significant and also it was creating detrimental physical and psychological impacts on the human and environment.

It was in 1972 that the U.S. Environmental Protection Agency cancelled the order for banning the usage of DDT based on the adverse impact it produced on the environment, human and other life forms. Since then continuous studies are being conducted to analyse the impact of DDTs. In some later years it was established that DDT is the cause of producing tumors in liver.  

Some of the common negative impacts produced by DDT as per the U.S. Department of Agriculture :  

a) The non destructive nature – DDT can not be destroyed and thus it remains persistent in the atmosphere

b) It attacks the tissues of living organisms especially the animals and humans  ( fatty tissue)

c) It can penetrate the atmosphere to deeper extent.

Now as per the current stuation, The use of DDT is controlled and other alternatives of pest control organisms is being deduced. As per the treaty of Stockholm Convention on POPs (Persistent organic pollutants) , usage of DDT for malarial control is justified but it puts a restrictive use of DDT as pesticides in other areas.  

4 0
3 years ago
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Do black worms use binary fission or budding
Nikolay [14]
Budding, I believe.
8 0
3 years ago
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Dietary fiber has been recommended for its possible benefits in reducing heart disease by lowering blood cholesterol. How does f
malfutka [58]

Answer:

By lowering the levels of total cholesterol and low density lipoprotein (LDL)

Explanation:

Dietary fibers are classified into two: the soluble fiber and the insoluble fiber. Studies have show that the soluble fiber play a significant role in lowering blood cholesterol, hence reducing the cardiovascular diseases.

Soluble fiber helps to lower blood cholesterol by its ability to bind to the small intestine which further binds to cholesterol most especially the ad cholesterol (low density lipoprotein). Binding of Fibers to cholesterol prevents them from migrating to the blood stream and to other  parts of the body. Since cholesterol can't get into the bloodstream, it exits the body through feces. Fiber has more effect on lowering LDL (bad cholesterol) than High density lipoprotein (good cholesterol.

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