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3 years ago

Mention about the four events of a occur during a binary fission in amoeba

Biology

1 answer:

Dafna1 [17]3 years ago

7 0

Answer

The 4 events that occur during amoeba are:-

It sees the food particle.Then by pseudopodia (the finger like projections from amoeba) traps the food particle.
The finger-like extensions of the cell surface fuse over the food particle forming a food vacuole.
Inside the food vacuole, complex foods are broken down into simpler ones which then diffuse into the cytoplasm.
The remaining undigested material is moved to the surface of the cell and thrown out. [Egestion].

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1 pts

erica [24]

Answer:

The Calvin cycle is a process that plants and algae use to turn carbon dioxide from the air into sugar, the food autotrophs need to grow.

Every living thing on Earth depends on the Calvin cycle. Plants depend on the Calvin cycle for energy and food. Other organisms, including herbivores, also depend on it indirectly because they depend on plants for food. Even organisms that eat other organisms, such as carnivores, depend on the Calvin cycle. Without it, they wouldn't have the food, energy, and nutrients they need to survive.

The Calvin cycle has four main steps: carbon fixation, reduction phase, carbohydrate formation, and regeneration phase. Energy to fuel chemical reactions in this sugar-generating process is provided by ATP and NADPH, chemical compounds which contain the energy plants have captured from sunlight.

Explanation:

7 0

3 years ago

I need help yahll guys

ArbitrLikvidat [17]

Answer: a.

Explanation: because i got it right on a test i had

3 0

3 years ago

the diagram below represents two cells, x and y which statement is correct concerning the structure labeled A ?

DaniilM [7]

The diagram below (attached image) represents two cells, X and Y.

Which statement is correct concerning the structure labeled A?

A) It is involved in cell communication in cell X but not in cell y.

B) It represents a cell wall in cell X and the cell membrane in cell y.

C) It prevents the absorption of CO2 in cell x and O2 and cell y.

D) It aids in the removal of metabolic waste in both cell X and Y

Cell membrane accomplishes several functions, among them, the removal of cell wastes. Option D. It aids in the removal of metabolic waste in both cell X and Y.

<h3>What is the cell membrane?</h3>

The cell membrane is a barrier that surrounds the cell content and isolates it from the extracellular space. It is composed of two lipidic layers, proteins, and glucans incrusted in between.

The cell membrane accomplishes many different functions. Among them, we can mention,

Isolation ⇒ It separates the intracellular content from the extracellular space.

Protection ⇒ It protects the interior of the cell from any damaging external factor that might affect its correct functioning.

Transport ⇒ It allows the selective pass of certain molecules or ions.

Substances interchange

⇒ Passive transport → Simple diffusion → through lipids

→ Facilitated diffusion → Assisted by channel

proteins

→ Does not need energy

→ Depends on the molecule size, the concentration

at each side of the membrane, and the charge of

the ions.

→ Occurs in favor of the electrochemical gradient

⇒ Active transport → It does the energy to occur

→ Mediated by carrier proteins

→ Transport big-sized molecules

→ Against the electrochemical gradient

⇒ Endocytosis/Exocytosis → Active transport mediated by vesicles.

Communication ⇒ By emission and reception of substances and molecules, the cell can communicate with other cells. This process is always mediated by membranes and their transport proteins or receptor proteins.

In the exposed example X cell represents an animal cell, and Y cell is a plant cell.

Both the animal and plant cells are eukaryotic. They carry their genetic material in the nucleus and mitochondria. Organelles are located in the cytosol, and both of them are surrounded by a protector cell membrane.

Among the options, the correct one is D. It aids in the removal of metabolic waste in both cell X and Y

You can learn more about cell membranes at

brainly.com/question/13524386

#SPJ1

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1 year ago

Describe how amoebas obtain food?

monitta

Amoeba acquires it food by endocytosis, that is, a small region in the plasma membrane which ultimately forms a intra-cellular membrane-bound vescicle. It engulfs it food using its pseudopodia (temporary protrusion of the surface of the amoeboid cell used for feeding and movement) and forms a vacuole around it. When the food is already trapped inside, it releases a digestive enzyme to digest it. Intake of liquid particles is pinocytosis (cell drinking) while intake of solid particles is phagocytosis (cell eating).

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3 years ago

Natural selection occurs in a population of organisms of the same species when the individuals

taurus [48]

Natural selection occurs in a population of organisms of the same species when the individuals are C. are genetically different and exhibit different characteristics.

<h3>What is the Natural selection?</h3>

Natural selection most effective acts at the populace's heritable trends: choosing for useful alleles and, thus, growing their frequency withinside the populace, at the same time as choosing in opposition to deleterious alleles and, thereby, reducing their frequency. This procedure is referred to as adaptive evolution.

Natural selection can most effective arise if there may be variant amongst contributors of the equal species.
Natural selection is the procedure thru which populations of living organisms adapt and change. Individuals in a populace are certainly variable, that means that they're all exclusive in a few ways. This variant manner that a few people have trends higher perfect to the surroundings than others.