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lakkis [162]
3 years ago
11

Which parasitic protozoan needs two hosts for its propogation? Entamoeba Giardia Plasmodium

Biology
1 answer:
Vilka [71]3 years ago
7 0
<span>Plasmodium is a parasitic protozoan that needs two hosts for its propogation.</span>
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How can the presence of one species benefit another in the same ecosystem
tekilochka [14]

Answer:

The different species present in an ecosystem make the ecosystem balanced.  The species of an ecosystem interact with one another in one form or the other. For example, the presence of a plant species will provide food for the abundant types of herbivores present in an ecosystem. A predator might feed on many types of preys. Hence, the presence of different preys will reduce the chances of a species from becoming wiped out from the ecosystem. Hence, all the organisms in an ecosystem are dependent on another in some way or the other.

8 0
3 years ago
Write a summary about the cell theory
julia-pushkina [17]

Answer:

Over the next two centuries after the discoveries of Hooke and Leeuwenhoek, biologists found cells everywhere. Biologists in the early part of the 19th century suggested that all living things were made of cells, but the role of cells as the primary building block of life was not discovered until 1839 when two German scientists, Theodor Schwann, a zoologist, and Matthias Jakob Schleiden, a botanist, suggested that cells were the basic unit of structure and function of all living things. Later, in 1858, the German doctor Rudolf Virchow observed that cells divide to produce more cells. He proposed that all cells arise only from other cells. The collective observations of all three scientists form the Cell Theory, which states that:

all organisms are made up of one or more cells,

all the life functions of an organism occur within cells,

all cells come from preexisting cells.

Though no one point of the Cell Theory is more important than another, the theory clearly states that the functions necessary for life occur in the cell. Findings since the time of the original Cell Theory have enabled scientists to "modernize" the theory, including points related to biochemistry and molecular biology. The modern version of the Cell Theory includes:

all known living things are made up of one or more cells,

all living cells arise from pre-existing cells by division,

the cell is the fundamental unit of structure and function in all living organisms,

the activity of an organism depends on the total activity of independent cells,

energy flow (metabolism and biochemistry) occurs within cells,

cells contain hereditary information (DNA) which is passed from cell to cell during cell division,

all cells are basically the same in chemical composition in organisms of similar species.

The Cell Theory is one of the main principles of biology. The points of the theory have been found to be true for all life. As with any scientific theory, the Cell Theory is based on observations that over many years upheld the basic conclusions of Schwann’s 1839 paper. However, one of Schwann’s original conclusions stated that cells formed in a similar way to crystals. This observation, which refers to spontaneous generation of life, was discounted when Virchow proposed that all cells arise only from other cells. The Cell Theory has withstood intense examination of cells by modern powerful microscopes and other instruments. Scientists continue to use new techniques and equipment to look into cells to discover additional explanations for how they work.

Explanation:

Hope I helped!

4 0
3 years ago
Read 2 more answers
Question 3 , 4 , 5 , 6 and 7 <br> - 50 points ! and will mark u brainly <br> need help ASAP !
Kipish [7]

Answer:

READ EXPLANATION

Explanation:

3 - B

4 - D

5 - A

6 - C (?)

7 - D

3 0
3 years ago
What is a characteristic of the tissue layers that make up the epidermis?(1 point)
Dennis_Churaev [7]

Answer:

I think it's B They contain many of the sensory cells found within the skin.

Explanation:

Please mark me brainliest if correct

7 0
2 years ago
Please provide the answer for the problem below.
Lera25 [3.4K]

Answer:

cell wall) function:protects and holds the structure of the cell

X for plant cell

chloroplast) absorbs energy from sun through photosyn. to make nutrients

plant cell-x

cytoplasm) a gel like substance in which most of the cell's processes take place

x for plant&animal

ER) packages & transports proteins made by ribosome to the golgi apparatus

GA) transports proteins to their destined location throughout the cell

found in plant and animal cells

Mitch) converts energy in nutrients to usable energy

found in plant and animal cell

nucleus: stores and protects DNA

found in plant and animal cells

vacuole: stores food and water

found in plant and animal cells

HOPE THIS HELPS

Explanation:

8 0
3 years ago
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