why might one type of coal contain more energy than another type of coal?

Answers

Answer 1

I think because of the strength of the coal, and the material. That makes a big difference, opinion wise.

Answer 2

Because it has a higher carbon content and/or a greater amount of other energy-rich components such as hydrogen and sulfur.

Why some coals have more energy than others?

The amount of energy in coal can vary due to differences in the organic matter from which the coal was formed, such as the amount of plant material, the type of plants, and the amount of time the plant material was exposed to heat and pressure.

Additionally, the formation process of coal can also affect the energy content, with coal formed under higher pressures and temperatures typically containing more energy than coal formed under lower pressures and temperatures.

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Researchers want to use eDNA to look for an invasive species in a waterway.
Which step should they do last?
A. Cut the DNA into fragments of different sizes.
B. Compare the samples with a positive control.
C. Isolate DNA from the waterwakin question.
D. Stain the gel to reveal a banding pattern.

Answers

The last step to observe different DNA patterns is to stain the gel to reveal a banding pattern (Option D).

DNA extraction, polymerase chain reaction (PCR) and fragment separation by gel electrophoresis are basic molecular techniques used to identify patterns in DNA.

The patterns in DNA can be used for identifying an individual in a population, distinguishing different species, etc. These patterns can be obtained by using restriction enzymes.

There are different dyes used to stain DNA before the identification of patterns in DNA.

For example, ethidium bromide is a widely used dye to stain DNA before fragment separation by agarose gel electrophoresis.

In conclusion, the last step is TO STAIN the gel with a DNA dye to reveal a banding pattern (Option D is correct).

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Sorry this is the picture

Answers

Answer:

That would be Ecosystem

Answer:

Ecosystem

Explanation:

:)

hi hi hi?? pls say bye

Answers

Answer:

But I don't want you to go please stay with us we all love you

Byeeeeeeeee:) hahaha

Molecules can cross cell membranes from areas of low concentration to areas of high concentration by
binding with carrier proteins and ATP. What is this process called?

A. Osmosis

B. Endocytosis

C. Facilitated Diffusion

D. Active Transport

Answers

Answer: THE ASNWER IS A. Osmosis

Explanation:

Osmosis. Osmosis is the movement of water across a membrane from an area of low solute concentration to an area of high solute concentration.

Give 3 harms done by groundwater to living organisms.

Answers

Answer:

1 harm done by groundwater to living organisms is that the water Drowns them.

What is a Haploid cell?
-a cell with half the chromosome number of the parent cell
- a cell with the same amount of chromosomes of the parent cell
- a cell that goes through mitosis
- a fertilized egg.

Answers

Answer:

the first answer that is there a cell with half the chromosome number of the parent cell

Which statement explains a difference between a cell wall and a cell membrane?

Answers

Cell membrane protects a wall, and cell wall doesn’t

based on the lesson, explain how dna creates proteins

Answers

Answer:

During transcription, the enzyme RNA polymerase (green) uses DNA as a template to produce a pre-mRNA transcript (pink). The pre-mRNA is processed to form a mature mRNA molecule that can be translated to build the protein molecule (polypeptide) encoded by the original gene.

Explanation:

Impact of climate change on ecosystems

Answers

Explanation:

destroys the habitat.

kills off the inhabitants (animals and plants)

what parts of the cell cycle are included in metaphase?

Answers

Answer:

Metaphase

Explanation:

Metaphase is a stage in the cell cycle where all the genetic material is condensing into chromosomes. These chromosomes then become visible. During this stage, the nucleus disappears and the chromosomes appear in the cytoplasm of the cell.

Metaphase is the third step in mitosis. In mitosis, mitotic spindle is fully developed, centrosomes are at opposite poles of the cell.

Will mark brainliest

Answers

Answer:

B

Explanation:

Answer:

C

Explanation:

The higher the ramp, the more slope there is, which means the item gets pushed down the slope more and faster

need help ASAP
what is An element

Answers

Answer:

a part or aspect of something abstract

an element is a pure substance which cannot be broken down by chemical means

Which of the following is true regarding catabolic pathways? They consume energy to build up polymers from monomers. They lead to the synthesis of catabolic compounds. They release energy as they degrade polymers to monomers. They do not depend on enzymes.

Answers

Answer:

They release energy as they degrade polymers to monomers.

Explanation:

In a catabolic pathway, complex hydrocarbons are usually broken down to their monomeric units.

This breaking down leads to the release of energy.

Anabolic pathway leads to the build up of energy. One of such process is photosynthesis. The catabolic pathway breaks down compounds to simpler units in order to release energy.

Similarities in Aemoba and Humans

Answers

Answer:

Both Amoeba and human beings are heterotrophs and derive nutrition from other organisms. Dissimilarity: Human beings have a complex digestive system and different nutrients are digested in separate regions. Amoeba does not have a digestive system and all the nutrients are digested in the food vacuole.

In which situation is the principle of cross-cutting relationships useful in determining relative age?


1. A fault breaks through sedimentary layers.

2. Fossils of two different species are found in different rock layers.

3. Sedimentary layers form over millions of years in a lake bottom.

4.Lava flows form on top of one another from several eruptions over time.

HELP ASAP
MARK BRAINIST

Answers

Answer:

1. A fault breaks through sedimentary layers.

Explanation:

The principle of cross cutting relationships is useful in determining the relative age of a fault break through sedimentary layers.

Principle of cross cutting relationships states that "a feature which cuts through a rock sequence is younger than the rock through which it cuts through".

A fault break through sedimentary layers is younger than the rock layers.

Answer:

A.) A fault breaks through sedimentary layers.

Explanation:

I got it right on the test

You are on a flight to Los Angeles, California. As the plane gets ready to land, it flies out over a large body of water. You look out the window and can see only water in the distance. You are over an ocean. Which ocean can you see?

Answers

Answer:

pacific ocean

Answer:

Pacific Ocean

Explanation:

Is there any benefit of cytoplasm being gel-like vs water-like.​

Answers

It holds everything into place :)

Several parts of an animal cell are involved in the processes of protein synthesis, packaging, and export.

Answers

Full question:

Several parts of an animal cell are involved in the processes of protein synthesis, packaging, and export. Which of the following correctly places the cell parts in the order in which they are involved?

nucleus → vacuole → cell membrane mitochondria → vacuole → cell membrane ribosome → endoplasmic reticulum → Golgi complex → cell membrane lysosome → endoplasmic reticulum → Golgi complex → cell membrane

Answer:

ribosome → endoplasmic reticulum → Golgi complex → cell membrane

Explanation

First, the DNA is transcribed into mRNA in the nucleus. The mRNA then moves to the cytoplasm. Here, it encounters the ribosomes.

At the ribosomes. the mRNA is translated into protein. It gets folded in the endoplasmic reticulum and then is transferred to the Golgi complex.

At the Golgi complex, proteins are modified, packaged, and transported to their destination in a series of vesicles, which if it is outside the cell, is the cell membrane.

A (Blank) is a specific sequence of nucleotides in a strand of DNA that codes for a specific sequence of amino acids.

Answers

Gene i’ve had the test before

which statement about the continental drift theory is untrue ?

Answers

Answer:

your right

Explanation:

Answer:

number 4 or D

Explanation:

the plates still shift to this day

answer for electron arrangment worksheet

Answers

1. Hydrogen: protons= 1, neutrons=0, electrons=1, atomic number=1, atomic mass= 1.00784
2. Carbon: protons= 6, neutrons=6, electrons=6, atomic number=6, atomic mass= 12.0107
3. Oxygen: protons=8, neutrons=8, electrons=8, atomic number=8, atomic mass= 15.999
4. Sulfur: protons= 16, neutrons= 16, electrons= 16, atomic number=16, atomic mass= 32.065
5. Nitrogen: protons= 7, neutrons= 7, electrons=7, atomic number= 7, atomic mass= 14.0067
6. Boron: protons=5, neutrons= 6, electrons= 5, atomic number= 5, atomic mass= 10.811
7. Helium: protons= 2, neutrons= 2, electrons= 2, atomic number= 2, atomic mass= 4.002602

Hope this helps!! (:

If you are working out and your oxygen supply is not meeting the demands of your cells, what process will your cells undergo?

Answers

Answer:

Fermentation

Explanation:

But when you sprint, your lungs and bloodstream can't supply oxygen fast enough to meet your muscles' need for ATP. In such situations, your muscle cells use another process, called fermentation, that makes ATP without using oxygen.

HELP FAST, HELP ASAP

Which gases contribute to the greenhouse effect?
which one of these is the answer
nitrogen and helium
carbon dioxide and methane
carbon dioxide and helium
nitrogen and methane

Answers

Answer:

Overview.

Carbon Dioxide.

Methane.

Nitrous Oxide.

Fluorinated Gases.

Explanation:

Here you go

Answer:

carbon dioxide & methane

Explanation:

what are the products of the combustion of a hydrocarbon

Answers

Answer: Carbon dioxide, water, and heat.

Explanation: Hydrocarbon combustion refers to the type of reaction where a hydrocarbon reacts with oxygen to create carbon dioxide, water, and heat. Hydrocarbons are molecules consisting of both hydrogen and carbon. They are most famous for being the primary constituent of fossil fuels, namely natural gas, petroleum, and coal.

Answer:

Carbon Dioxide and Water!!!

Explanation:

EDG2021

In seedless plants, haploid gametophytes are produced from
diploid spores that undergo mitosis.
haploid spores that undergo meiosis.
diploid spores that undergo meiosis.
haploid spores that undergo mitosis

\help pls im timed

Answers

Answer:

answer is c

Explanation:

^since she was so helpful

Answer:

D. haploid spores that undergo mitosis.

Explanation:

The Life Cycles of Plants quiz on edge.

What is Endochondral Ossification?

Answers

Answer:

The formation of bone in which a cartilage template is gradually replaced by a bone matrix, as in the formation of long bones or in osteoarthritic ossification of synovial cartilage.

Theirs the answer, I hope this help you welcome

C Protista itc
5. Which of the following is a heterotrophic eukaryote associated with the decomposition of dead organisms
a Protist
b. Herbivore
c Bacterium
I
d Fungus
Help

Answers

it would be d since the other three are unicellular

Why are new stars likely to form in irregular galaxies?

A. They contain a large amount of gas and dust
B. They're part of the Local Group
C. They contain many black holes
D. They don't have regular shapes

Answers

The answer is A. They contain a large amount of gas and dust

Answer:

A. They contain a large amount of gas and dust

Explanation:

Guess what?

Explanation:

I took the test!

Explanation:

Have a good day

Visual Reading Tool: Inside a Chloroplast
1. Fill in the reactants and products of the light-dependent and light-independent reactions of
photosynthesis.
Light-Dependent
Light-Independent
Reactions
Reactions
NADPH
ATP
THYLAKOID
ADP
STROMA
NADP
2. What is the NADPH responsible for?
3. Where do the "light" reactions (light-dependent) take place?

Answers

Answer:

A) Light dependent reactions

Reactants: light, H2O

Products: Oxygen gas

B) Light independent reactions

Reactants: C02

Products: Glucose

2. NADPH is an electron carrier which transfers electrons in the electron transport chain of photosynthesis

3. Light reactions occur in the THYLAKOID membrane.

Explanation:

As depicted in the image in this question, the photosynthetic process can be grouped into two stages viz; light dependent reactions and light independent reactions. The light dependent reactions, which take place in the THYLAKOID MEMBRANE of the Chloroplast, involves the synthesis of ATP (energy carrier) and NADPH (electron carrier) to be used in the next stage. The reactants of light dependent reactions are light energy from sun, and water (H2O) while the product is Oxygen (O2) gas.

In the light independent reactions, the ATP and NADPH are used to synthesize GLUCOSE as a product from Carbon dioxide (CO2) reactant.

2. The NADPH is is an electron carrier produced from the reduction of NADP+, which transfers or donates electrons to other molecules in the electron transport chain of photosynthesis. This is crucial in building of the proton gradient for ATP production.

3. The light reaction or light dependent reaction takes place in the THYLAKOID MEMBRANE of the Chloroplast.

The light-dependent reactions use ADP and NADP to produce NADPH and ATP (it occurs in the thylakoid membrane), whereas light-independent reactions use NADPH and ATP. NADPH is a cofactor.

The light-dependent reactions use sunlight and water (H2O) to produce oxygen (O2), NADPH and ATP, whereas light-independent reactions use carbon dioxide (CO2) NADPH, and ATP to produce simple carbohydrates (e.g., glucose).

Both light-dependent reactions and light-independent reactions occur in the chloroplast: light-dependent reactions occur in the thylakoid membrane of the chloroplast, whereas light-independent reactions occur in the stroma of the chloroplast.

Reduced nicotinamide adenine dinucleotide phosphate (NADPH)  is a cofactor that transports electrons (e-) and protons (H+) released by sunlight into new carbon-carbon bonds and thus serves to produce simple carbohydrates (i.e., sugars).

In conclusion, the light-dependent reactions use ADP and NADP to produce NADPH and ATP (it occurs in the thylakoid membrane), whereas light-independent reactions use NADPH and ATP to create carbohydrates.

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What shape represents the phosphate in a nucleotide?

Answers

Answer:

Each nucleotide is made up of a nitrogenous base, a pentose sugar, and a phosphate. The remainder of the molecule forms the pentose sugar.

Explanation:

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