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LekaFEV [45]
3 years ago
6

What's the difference between flagella and 'pili' in prokaryotic cells?

Biology
1 answer:
Katarina [22]3 years ago
8 0
Q1. The main difference between flagella and pili in a prokaryotic cell is their length. Flagella are long and thin, whip-like appendages that extend from the interior of the prokaryotic cell. There are much fewer flagella than pili on the prokaryotic cell. Pili are short and hallow, hair-like appendages from the surface of the cell. They do not extend from the interior of the cell.
Flagella are made of protein flagellin while pili are made of protein pilin.
Flagella can be found in both Gram+ and Gram- bacteria while pili can be found only in Gram- bacteria. 
A function of flagella is motility. Pili can perform motility but are rather responsible for attachment and genetic exchange.

Q2. Photoautotrophic organisms contain pigments that help them absorb the light of certain wavelength so they can make their own food (because they are autotrophs) in the process of photosynthesis. There are different types of pigments and it is hard to say if they are similar to chlorophyll or not. Because they do the same function, but also they differ in chemical composition.
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PLSSSS 30 POINTSS BRAINLEST
Ivenika [448]

Answer: The attachment listed some cell organelles,although there isn't a specific question on then but am going to be defining each of them and state their functions as well.

1. The Nucleus; The is command centre of the cell, it is made up of nuleolus, chromosomes, nucleoplasm,nuclear envelope and nuclear lamina.

it contains the genetic/hereditary materials that the cell is made up of.

The Nucleus plays a great role in the control of growth and development of the cell.

The nucleus also coordinates some of the the activities of the cell like cell division and protein synthesis.

2. Cytoplasm; The cytoplasm is one of the cell organelles,it is the liquid portion of the cell,it consists of cell contents between the plasma and the cell membrane. The fluid cytoplasmic material is where many cell organelles are found/suspended fluid. Most activities carried out by the cell occurs in the cytoplasm.

3. Endoplasmic Reticulum; The Endoplasmic Reticulum is one of the cell organelles that have the structure of a network of flattened sacs and tubules and play a crucial role in plant and animal cell. Rough endoplasmic reticulum has ribosomes attached to the cytoplasmic side of the membrane and the smooth endoplasmic reticulum lacks attached ribosomes in them thus giving it the smooth appearance.

The Endoplasmic Reticulum functions in the production, processing, and transport of proteins and in and out of the cell and also the production of lipids.

4. Golgi Body; One of the plant organelles that plays a role in the sorting and organizing the proteins produced and processed by the Endoplasmic Reticulum. these proteins are sorted and packed in vessicles to be used by the body.

5. Mitochondria; (a double membrane organelle). It is otherwise known as the powerhouse of the cell,it produce/generate energy in the form of ATP needed for cellular respiration. These energy produced is used for other cellular metabolic activities.

6. Lysosome (Animal) Chloroplast (Plant); Lysosomes are found in most animal cells, they function by digesting good and garbage,they contains acids that aids this function in the stomach of the cell and when the lysosome is diseased or explodes,the cell stops functioning.

The Chloroplast on the other hand is found in the cells of plants and algae,they play a crucial broke in photosynthesis by capturing the energy from the sun and turning the captured energy into usable forms like sugar,glucose and other organic molecules.

7. Cell Membrane; The cell membrane is the cell organelle that forms a boundary between the cell and the sorounding environment.

The cell membrane as well controls the movement of cellular materials in and out of the cell.

8. Nucleolus; The nucleolus is one of the cell organelles where ribosomes are made. The ribosomes are small grain-shaped organelles that make protein and they are found in the surface of rough Endoplasmic Reticulum. Nucleolus are small and round in structure and are found in the nucleus,

9. Vacoule (Plant Cells) Centrioles (Animal Cells); The vacoule is a storage chamber(reservoir) for wanted and unwanted materials in the cell, the vacoule is found within the cytoplasm and it is enclosed by a membrane that typically contains fluid.

The centrioles on the part of the animal cell is a cell organelle that has a structure of a two hollow cylinders,ring of microtubules next to each other(the centrosome).the centrioles are located just outside the nucleus of the cell.

Centrioles function by producing the mitotic spindles for cell division, and also assisting to pull chromosome pairs apart to opposite end of the cell during cell division.

10. Cell Wall; A protective semi permeable rigid outer layer of nonliving material that surrounds the cells of plants and some other organisms.

The cell wall houses the organelles of the plant cell.

The cell wall functions by giving the cell strength and structure,it's semi permeable nature filters and selectively allows certain materials in and out of the cell.

5 0
4 years ago
Why might archaeologists unearthing the terracotta soldiers be at risk of lead exposure?
jekas [21]
Idk somebody tell me plz and add me on snap makiyah_cute no adults add me only 12 and older ✌
8 0
3 years ago
Explain why algae swim up from the bottom of a pond during an afternoon
Effectus [21]

Explanation:

What happens during daytime is, oxygen that gets trapped between filaments of algae, moves them to the surface  and during night as O2 is not produced, they slowly sink to lower depths, and you don't see them

6 0
3 years ago
What is virtual water? Why does it matter?<br><br> - How can you reduce your virtual water impact?
nika2105 [10]

Answer: What is virtual water?  

Virtual water is the volume of water used to produce consumer products. The total volume of water refers to all of the water used in the production of a product. For example, the total volume of water used in a food product would include the water used in the agricultural process, but also the water used in packaging and shipping. Virtual water is essentially all of the “hidden” water behind a product. Every product we consume contains virtual water.

Why should we care?

The majority of the public is unaware of just how much water we consume in our daily lives. It is easy to over-consume, especially when we don’t know just how much we are actually consuming. Without understanding our consumption, it is unlikely that we will succeed in reducing our virtual water footprint. Communities and countries around the world face water issues of scarcity, sustainability, sanitation and accessibility.

Food is the main source of virtual water consumption. In fact, the average American consumes about 33,000 glasses of virtual water every day. These numbers are only expected to increase with increasing populations. Understanding virtual water is a key consideration for sustainable water management.

Explanation: Water covers 70.9 percent of the planet’s surface.

97 per cent of the that water is salt water.

Around the world, 2.1 billion people still lack access to safe water.

Water use is growing at twice the rate of population growth. Unless this trend is reversed and we come up with a way to share water fairly and sustainably throughout the planet, two-thirds of the global population will face water “stress” by 2025

In the USA, the average water footprint per year per capita is as much as the water needed to fill an Olympic swimming pool, an average of 7,786 litres of water per person per day.

In China, the average water footprint is 2,934 litres of water per person per day.

In the Netherlands, 95 per cent of the water footprint of consumption lies somewhere else in the world (due to the amount of imported goods consumed), whereas in India and Paraguay only 3 per cent of the national water footprint of consumption is external.

It requires around 1500 litres of water to produce 1 kilogram of wheat, and a huge 10 times more to produce the same amount of beef.

The water footprint of a cup of coffee is around 140 litres, a cup of tea only around 34 litres.

<em>      Hope i helped</em>

6 0
3 years ago
Tascha is on a medication that increases the pH of the stomach and makes it alkaline. What is the effect of this medication?
Yakvenalex [24]
It helps to calm a stomach, such as pepto bismol
7 0
3 years ago
Read 2 more answers
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