All categories

4 years ago

Which kingdom is most likely to contain organisms that are decomposers?

Biology

2 answers:

timofeeve [1]4 years ago

8 0

Answer:

The correct answer is option a. "kingdom fungi".

Explanation:

The kingdom fungi contains plenty of organisms that are decomposers. Most fungi act as decomposers in ecosystems by feeding from decaying organic matter and returning nutrients to the soil, which are later used by the plants. The fungi that are decomposers are known as saprotrophs, and are very important for its role in decomposing the cellulose from plant cell walls.

netineya [11]4 years ago

4 0

Fungi because bacteria, eubacteria could also but fungi is most likely to

You might be interested in

Scientific and common name for this?

Novosadov [1.4K]

Answer:

The common name for this is Moss

Scientific name is Bryophyta

Explanation:

5 0

3 years ago

Which of the following is the process of

Ganezh [65]

Answer:

vaccination

Explanation:

Vaccination also called immunization is the administration of antigenic material called a vaccine to produce active artificial immunity against a disease. Vaccination protects humans from infections of many diseases. Examples include tuberculosis poliomyelitis, whooping cough, diphtheria and measles.

Active artificial immunity is where antibodies are formed in response to administration of dead or weakened( attenuated) pathogens or chemically treated toxoids.

5 0

3 years ago

List all the electrical and mechanical events that occur within 1 heartbeat (in order). Also be able to state which are occurrin

eimsori [14]

Answer:

Phases of the Cardiac Cycle are Diastole and Systole

Explanation:

<h2>Cardiac Cycle Phases </h2>

(First Phase) Atrial contraction

This is the phase of atrial contraction.

In this fase, 80% of ventricular filling has been done passively even before the onset of atrial contraction, and the remaining 20% of ventricular filling is due to atrial contraction. The active filling of ventricles becomes valuable during physical activity.

When pressure in the atrium increases, blood rush into the ventricles through the opened mitral valve. During left atrium contraction, pressure and volume are transferred into left ventricle through opened mitral valve. Aortic valve is closed because pressure in aorta is greater than the pressure in left ventricle at this moment.

(Second Phase) Isovolumetric Contraction

The early phase of ventricular systole. When ventricles contract, there is a progressive increase in intraventricular pressure. This wil leads to closure of mitral valve. That produces first heart sound (S1) and little bulging of mitral valve into atrium causing the slight increase in the atrial pressure.

Intraventricular pressure progressively increases upto 80mmHg altought it is not competent enough to open the aortic valve.

At this moment ventricle is contracting with closed mitral and aortic valves. Meanwhile, intra atrium pressure is gradually increasing due to accumulation of blood returning from lungs into the left atrium. During the same phase, aorta pumps whatever blood it contains into more peripheral part of arterial tree due to its elastic nature.

This is the stage of ventricular contraction when backward valves are closed yet the forward valves are not opened. Ventricle is contracting as a closed chamber without any change in volume and size of the ventricle. We call it isovolumetric contraction of early part of ventricular systole.

(Third Phase) Rapid Ventricular Ejection

When pressure reaches to 81mmHg, aortic valve opens. This starts third phase of cardiac cycle. Ventricles keep on contracting, and there is a progressive increase in intraventricular pressure upto 120mmHg. During this phase, aortic valve opens and blood is ejected quickly into the aorta. At this point left ventricle and aorta behave as a single chamber.

The pressure changes occurred in the ventricles results in the transmission of pressure to aorta. Meanwhile left atrium continues receiving blood from the lungs.

(Fourth Phase) Slow Ventricular Ejection

In this phase atrium is still behaving as reservoir of blood and the pressure is keep on building. Mitral valve is closed. Ventricles are still contracting but intraventricular pressure starts falling, due to ejection of blood . Hence, pressure in aorta also starts falling, but intraventricular pressure is still more than aortic pressure.

Aortic valve remains open leading to slow ejection of blood into aorta. Elastic aorta keeps on squeezing the blood and pumps it into peripheral arterial tree.

(Fifth Phase) Isovolumetric Relaxation

In this phase ventricles start relaxing. Intraventricualr pressure falls quickly. In the beginning, as soon as the ventricular pressure becomes less than pressure in aorta, aortic valve closes.

Even though pressure in ventricle is falling, it is still high enough compared to pressure in atrium. Ventricle is relaxing with closed valves and it is known as isovolumetric relaxation. During this phase atrium is still behaving as reservoir of blood.

(Sixth Phase) Rapid Passive Ventricular Filling

When left ventricle start relaxing, pressure in left ventricle start dropping until it reaches the point where pressure in the ventricle becomes less than the pressure in atrium, leads to opening of mitral valve. Blood which was previously accumulated in atrium will rush into ventricle. This quick filling is done without atrial contraction.

(Seventh Phase) Slow Passive Ventricular Filling

As atrioventricular valve open, blood coming to atrium rushes into the ventricle. Here atrium is not acting as reservoir.

7 0

4 years ago

As many as 25 percent of the cowboys who participated in the texas cattle drives were:

Hitman42 [59]

As many as 25 percent of the cowboys who participated in the Texas cattle drives were AFRICAN AMERICANS.
Cattle drive was a main economic activity in the Western part of America during the 19th century. The west were known for cattle breeding and they usually have to move these cattle from the home ranches to the rail-heads where they will be bought. The distance between these two points is always great and it may takes as much as two to three months before the distances are covered. The cowboy are the ones that drive the cattle to their selling points. Texas was particular successful in cow farming and as at that time about one fourth of the cows boys are of African American origin.

5 0

4 years ago

Read 2 more answers

*15 points* Earth Science

rusak2 [61]

Just saying it says 8 points ya little baka

3 0

3 years ago