All categories

3 years ago

Which protozoan is associated with the ability to cause severe dysentery?

Biology

1 answer:

STatiana [176]3 years ago

5 0

Answer:

Entamoeba histolytica

Explanation:

Entamoeba histolytica is the causative agent of amebiasis (amebic dysentery). The pathogen enters the human body through consumption of contaminated water or food and enters the small and large intestines. E. histolytica targets the epithelium of large intestine and creates ulcers in it. E. histolytica enter the mucosa and submucosa of the intestine through these ulcers and leads to severe dysentery, that is amoebic dysentery.

You might be interested in

Which laboratory finding is a characteristic feature in a client with hypercortisolism?

Nastasia [14]

Glucose metabolism is disturbed by hypercortisolism and the client's fasting blood glucose is increased. The client also has decreased serum potassium level. Since cortisol is an immunosuppressant, it lowers the immune system by lowering the lymphocyte count.

4 0

3 years ago

What organelle is responsible for garbage disposal and recycling in an animal cell?

Juliette [100K]

The lysosomes are responsible for that

8 0

3 years ago

Why is carbon essential to all known life on Earth?

ser-zykov [4K]

Carbon forms the key component for all known life on Earth. Carbon is the basis of all molecules. Its is easily able to bond because of the 4 valence electrons.

4 0

3 years ago

In the peppered moth scenarios what is the variation? And the selection?

Morgarella [4.7K]

Variation is number of alleles for the wing color of the peppered moths. The wing color ranges from pure white to pure back.

Selection pressure is predation by birds.

Explanation:

In the wake of the industrial revolution, white-winged peppered moths had a large allelic frequency in the population compared to black-winged peppered moths. However, when the environment changed due to soot produced by industries (making the environment darker) white-winged peppered moths reduced while that of black moths increased.

This is because black moths were able to blend in and camouflage in the dark environment than white-winged peppered moths that stood out to their predators. Black moths, therefore, had an increased chance of reaching adulthood and passing their genes to the next generation. This increased the allelic frequency of black-winged peppered while that of white-winged moths reduced in the population.

Learn More:

For more on natural selection of peppered moths check out;

brainly.com/question/12918325

brainly.com/question/9231156

#LearnWithBrainly

8 0

3 years ago

Three linked autosomal loci were studied in cucumbers: fruit color (dark vs. light), tendril size (long vs. reduced) and fruitin

Zina [86]

Answer:

Explanation:

1. Progeny observed in the experiment is calculated by adding all the progeny numbers observed in the :

TIME TO FRUIT TENDRIL SIZE FRUIT COLOR NUMBER

Normal normal dark 370

normal normal light 32

early normal light 971

early normal dark 28

early reduced dark 25

early reduced light 483

normal reduced light 36

normal reduced dark 810

TOTAL

PROGENCY 2755

2. The locus in the center is TIME TO FRUIT. Tendril size is at the beginning of the locus and the distance between the locus B and locus C is R2

3 0

3 years ago