Please help! i will give brainliest to the first person, but you must have the CORRECT answer!
Which of the following is an effect of organic matter on soil?
a.
improved soil structure
b.
decreased water retention
c.
increased nutrient loss
d.
all of the above
Answer:
D
Explanation:
all these things
Answer:
a. improved soil structure
Explanation:
organic matter binds soil particles into aggregates and improves the water holding capacity of soil.
A chromosome that lacks a centromere would best be described as _____________.
a. heterochromatin
b. a single chromatid
c. in a duplicated state
d. a pair of sister chromatids
Answer:
b.
have a nice day dear
....
Sallwaler
5. What is produced when an acid is mixed with water?
A- oxygen ions
B- hydroxide ions
C- oxygen atoms
D- hydrogen ions
Answer:
Answer
Hydrogen ions
Explanation:Answer:
hydrogen ion....................
Explain the difference between a heterogeneous mixture and a homogeneous mixture
Answer:
A homogeneous mixture has the same proportions of its components throughout any given sample and is also referred to as a solution. Conversely, a heterogeneous mixture has components in which proportions vary throughout the sample. hope this kinda helped
Explanation:
Which statement about cells is NOT true.
Contain substructures
O Have organelles that performs different functions
O Come together to form molecules
Are the basic unit of all living things.
A ______ frequency causes a _____wavelength and ______ energy. Lesson: 4.09 Question 10 options: higher, shorter, high low, shorter, greater low, greater, shorter higher, greater, shorter
Answer:
A higher frequency causes a shorter wavelength and higher energy.
A shorter frequency causes a greater wavelength and low energy.
Explanation:
Frequency is the number of waves that move at a period of time. It is measured by counting the number of crest point.
Wavelength is the distance between waves. A wave with higher frequency have crest that a very close and therefore the distance between them or wavelength is short compare to a wave with low frequency that the distance are farther apart and they have long wavelength. Therefore to generate high frequency of wave , more energy is required to do this .
Where in the cell are the chromosomes lined up during metaphase?
Bottom of the cell?
Top of the cell?
At the ends of the cell?
In the middle of the cell?
Answer:
they're aligned at the centre of the mitotic spindle...(metaphase plate)
What does this image show a picture of?
Answer:
it is B
Explanation:
Which row in the chart correctly describes what would be expected to occur in
the potato cells, with regard to both the starch and water molecules?
Answer: A (More Water Will Move Into The Cell And Starch Will Remain In The Cell).
Explanation: No Explaining, You Got 17 Minutes Left On The Test, HURRY UP! Just Trust Me.
Answer:
Water: more water will move into the cell than will leave the cell.
Starch: Starch will remain inside the potato cell.
Explanation:
Hey there!
In this case, according to the given information, and the chart, it is possible to infer that the water molcules outside the cell will have the capacity to move inside it, via difussion, as more concentration is outside, creating a potential able to induce the process. In addition, the amount of molecules of water that get into the cell is greater than those leaving it, because of the aforementioned.
Moreover, since no starch molecules are outside the cell, there will not be any potential inducing the difusion process, for that reason these will not move anywhere.
Thus, the correct row states:
Water: more water will move into the cell than will leave the cell.
Starch: Starch will remain inside the potato cell.
Regards!
Which of the following represents a chemical change?
Mowing of grass
Sublimation of ice
Dissolving sugar in water
Charring of a marshmallow
Answer:
the marshmello
Explanation:
Answer:
charring of a marshmallow
Explanation:
all the rest are physical changes
When tectonic plates slowly push against each other, forces build up and
eventually the plates move to release the tension. The movement of the plates is
caused by- *
Answer:
The movement is caused by the convection currents that roll over in the upper zone of the mantle. This movement in the mantle causes the plates to move slowly across the surface of the Earth.
Explanation:
Can you complete this sentence for me please? . Different kind of fats contain different ________.
Different kind of fats contain different Saturated Fats.
Which natural polymers are involved with making clothing?
Answer:
wool, nylon, and DNA.
Explanation:
I'm smort
Which of the following happens when fossil fuels are burned?
O Carbon dioxide and other pollutants are released into the air.
O Carbon dioxide and other pollutants are removed from the air.
Radioactive waste is produced.
Iron, lead, and zinc are produced.
Answer:
A. Carbon dioxide and other pollutants are released into the air.
Explanation:
Just took test
In the case of burning fossil fuels, carbon dioxide and many other air pollutants get released into the environment. The correct option is A.
What are fossil fuels?Fossil fuels are derived from the decomposition of plants and animals.
These fuels, which can be encountered in the Earth's crust and encompass carbon and hydrogen, can be burned for energy. Fossil fuels include coal, oil, and natural gas.
It aids in the release of carbon dioxide and other air pollutants in the air leading to air pollution.
Thus, the correct option is A.
For more details regarding fossil fuels, visit:
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Is this right? Please help me
What other forms of energy are powered by the sun?
Answer:
Thermal Energy, Solar Energy, Electrical
Explanation:
Solar power is energy from the sun that is converted into thermal or electrical energy. Solar energy is the cleanest and most abundant renewable energy source available, and the U.S. has some of the richest solar resources in the world.
The reactant for cellular respiration are carbon dioxide, water and ATP energy.
True
False
N2+3h2-->2NH3
How many total reactant atoms are their?
Answer:
There are 7 reactants atom are there.
Explanation:
1 Nitrogen atom( formula=N2) and 6 Hydrogen atoms ( 3 hydrogen atoms with 2 coefficient , 3x2=6. 6+1=7. So my answer that there are 7 reactant atoms take part in this reaction
Describe the steps of how a protein is specifically made.
Include both Transcription, Translation & protein folding (all levels)
Answer:
Ok. Let me explain.
Explanation:
First of all this process starts from genes in DNA.
At first an enzyme called RNApolymraze،makes a copy of one strand of DNA. We call the copied strand mRNA (messenger RNA). This stage is called transcription . This mRNA leaves nucleus from nucleus pores and enters the cytoplasm.
When the mRNA reaches a ribosome. Another process starts which is called translation.
In translation a special RNA which is called tRNA that has an amino acid attached to it ،enters the ribosome. Every three code on mRNA is a code of special amino acid so when the code on tRNA and mRNA are suitable، different amino acids bond together with peptide bond.
After this process the peptide chain is produced
Every protein has four structures until it can be used.
First structure is peptide chain. It is after the translation.
The second structure this peptide chain makes alpha helix and beta sheet.
The third structure it makes a shape like T or a kind of plant in persian :(برگ شبدر)
The fourth structure is when it folds with aid of tao protein and now it can be used.
What are the inputs of the digestive system?
Answer:
do u mean whats in the digestive system?
Explanation:
cause if so, its mouth, esophogus, liver stomach gallblader s+l intestine, then the rectum
1 Which of the following best describes, in general, how organisms benefit from
enzymes?
A They speed up chemical reactions for the organisms.
B Enzymes maintain constant temperature in the organism.
C They are responsible for reproduction in organisms.
D Enzymes transfer genetic information between organisms.
Answer:
A
Explanation:
Enzymes in an organism speed up chemical reactions by lowering the activation energy (energy needed for reactants to come together and react)
Answer:
A
Explanation: The enzyme speeds up the reaction by lowering the activation energy needed for the reaction to start
PLEASE ANSWER BRAINLIST
which one is tan limestone
Tilting,
Erosion,
Folding
Answer:
Erosion
Explanation:
Give three reasons why leaves might turn red?
Answer:
Douglas fir stops growing because it can't pull water any higher.
All tree leaves have 'thermostat' that maintains temperature.
Leaves shed new light on earlier arrival of spring.
Explanation:
Label the parts of the diagram using the following
1.centromere
2.gene
3.chromatid
4.histone
5.chromatin
6.chromosome
Answer:
A- CHROMOSOME
B- CHROMATID
C- CENTROMERE
D- GENE
E- HISTONE
F- CHROMATIN
The diagram below shows a model of the circulatory system. Red represents blood that has high oxygen content and blue represents blood that has low oxygen content.
When one part of the heart contracts, blood moves from the heart to the lungs. Which statement best explains this motion of the blood?
A. The heart only contracts when it contains blood with high oxygen content.
B. The lungs cause the heart to contract when they need more blood.
C. The lungs move to inhale and exhale gases when the heart contracts.
D. The heart supplies the force that moves blood through the body.
Answer:
I believe it's C
Explanation:
Answer:
D. The heart supplies the force that moves blood through the body
Explanation:
When a chamber of the heart contracts, the pressure provides a force that makes the blood move. Valves make sure that the force pushes the blood in the correct direction. Therefore, the statement which best explains this motion of the blood is that the heart supplies the force which moves blood through the body.
What happens to the energy that is passed through to the primary consumer? List three possibilities
Please help
Answer: Primary consumers only obtain a fraction of the total solar energy—about 10%—captured by the producers they eat. The other 90% is used by the producer for growth, reproduction, and survival, or it is lost as heat. You can probably see where this is going. Primary consumers are eaten by secondary consumers.
Explanation:
The energy that is passed through to the primary consumer is only 10% of their total energy as 90% of energy is lost in the metabolic process or excretions process.
The flow of energy in any ecosystem is linear from the sun to the consumers in an ecosystem. Energy is transferred from each trophic level to the next, however, only 10% of the energy of each level is transferred other 90% of energy is lost in the various process:
transferred to the next trophic level: If energy passed through the primary consumer then 10% of the total energy will transfer to the secondary consumerLost as heat or metabolic process: Most of the part of the energy is lost in performing various cellular functions and metabolic functions such as cellular respiration, digestion, reproduction, and others.Lost in excretion: some part of the energy is also lost in the excretion process.Thus, the correct answer and possibilities are given above.
Learn more about the energy flow:
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Describe what lines up at the cell's equator during metaphase 1 of meiosis
During metaphase, spindle fibers attach to the centromere of each pair of sister chromatids. The sister chromatids line up at the equator, or center, of the cell. This is also known as the metaphase plate. The spindle fibers ensure that sister chromatids will separate and go to different daughter cells when the cell divides.
Biology CELLS AND ORGANELLES FRQ..
1. Cell wall ( maintain structure and support)
2. centrioles ( aids in cell division)
Answer:
a) cell wall - maintains structure and support
b) centrioles - aids in cell division
Explanation:
hope this was helpful
Please help ASAP I’ll mark brainliest!!! Who ever answers first :)
What is the chemical signal that diffuses across the synapse from a sending neuron to a receiving neuron called?
Answer:
A neurotransmitter
Common types of NT:
AcetylcholineDopamineGamma-aminobutyric acid (GABA)GlutamateHistamine NorepinephrineSerotonin