Which of the following is not an organelle found ONLY in plant cells?

Answers

Answer 1

Answer: -Chloroplasts: Chloroplasts are the plant cell's "energy power plant" as well as mitochondria- they are involved in photosynthesis, making food and energy for the cell.

-Cell walls: Cell walls are rigid layers around the cell membrane. They are made of cellulose and help maintain the cell's shape and prevent it from swelling too much.

One organelle only in animal cells:

-Centrioles: Centrioles are structures that make spindle fibers for the movement of chromosomes in mitosis.

A different organelle:

-Vacuoles:

In plant cells, the vacuole is called a "central vacuole". The central vacuole is a large "balloon" that holds water, nutrients, ions, trash, etc. for the cell.

In animal cells, there are numerous smaller vacuoles. They have the same function.

Answer 2

Answer: The cell wall is only located in the plant cell

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Compare and contrast alternating current and direct current

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Alternating current (AC) and direct current (DC) are notable for inspiring the name of an iconic metal band, but they also happen to sit right at the center of the modern world as we know it. AC and DC are different types of voltage or current used for the conduction and transmission of electrical energy.

Electrical current is the flow of charged particles, or specifically in the case of AC and DC, the flow of electrons. According to Karl K. Berggren, professor of electrical engineering at MIT, the fundamental difference between AC and DC is the direction of flow. DC is constant and moves in one direction.

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List three effects that an increase in urbanization can have on air quality

Answers

Increase in urbanization will lead to increase in the number of people who are living in an urban area and it will also lead to increase in development in that area. The increase in development can come in form of construction of industries, which release large amount of waste products that pollute the air. This will lead to air pollution and reduce air quality. Development can also be in form of availability of electricity, that makes it possible for people to operate different electrical gadgets such as radio and television, which can result in noise pollution. Increase in the number of people who operate motor vehicles will also lead to increase in air pollution, which is caused by fossils fuel.

There are several effects that an increase in urbanization will have on air quality. One will be there will be more vehicles on the road. Before the city was urbanized, there were fewer vehicles and people. Another reason will be more industry pollution. When a city has been urbanized, more factories will come for the citizens to have jobs and to bring in more money. The burning of fossil fuels will also increase as the population grows. That will have a huge effect on the air quality.

Which biomolecule is made of the monomer "amino acids"? *6 points
O
Proteins
Nucleic Acids
O
Lipids
O
Carbohydrates

Answers

Answer:

Proteins

Explanation:

Final answer:

Proteins are the biomolecules made up of the monomer 'amino acids'. They are composed of specific sequences of amino acids and are responsible for nearly every task of cellular life. Option 1

Explanation:

The biomolecule that is made up of the monomer 'amino acids' is Proteins.

Proteins are one of the basic components of living cells and are composed of specific sequences of amino acids linked together by peptide bonds. These sequences determine the unique three-dimensional structures which in turn determine protein function.

Consequently, proteins are responsible for nearly every task of cellular life, including cell shape and inner organization, product manufacture and waste cleanup, and routine maintenance.

Learn more about Proteins here:

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Before there was any life on earth, which gas was absent from earth’s ancient atmosphere? A. nitrogen B. ammonia C. oxygen D. methane

Answers

Easy. Answer is oxygen because it says which one was missing before any life was on earth. And in order to have life on earth you need oxygen!
:)

Answer:

Oxygen

Explanation:

took the test on k12

Why in indonesia is so hot if dry season??????????

Answers

Great question!

The dry season of Indonesia is an annual period of little or no rainfall, and this is one of many reasons why Indonesia is so hot in the dry season.

° I can't say all the reasons, but I'll tell you a few more.

The tropics of Indonesia is dominated by the tropical rain belt, which moves from the northern to the southern tropics and back each year.

The tropical rain belt lies in the southern hemisphere very roughly from October to March - That's a whole half-year! 6 months!

↑ ↑ ↑ Hope this helps! :D

What is a limiting factor

Answers

A limiting factor is something that restricts organism(s) from increasing their population. If you look at a graph showing the population of a certain organism, you will notice that at a certain amount of their population it stays around the same area. That is known as the carrying capacity. The carrying capacity is there due to the limiting factors, which depends based on the needs of particular organisms. For example, one limiting factor for a certain species might be that the number of predators increased, or there are limited resources available in order to survive.

Prevents species from growing, example food

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