Please help i have not been able to do my work for a whole week because my computer broke so please help / idk the subject it dos not have science so ill pick a random

Answer:

c

Explanation:

Answer:

The population of predators most often eliminates the population of prey.

Explanation:

Answer:

If the mantle is made out of soft rock, then I think it would melt due to the heat, but if it was hard, it would just burn, so I firmly believe the rock is hard.

Explanation:

Mantle is a layer on planetary body which is made up of minerals. Mantle is solid as it is made up of heavy metals and solid rocks which makes it rigid.

A mantle is a layer inside a planetary body bounded by a core and on the above by a crust. Mantle is made up of rock or ices, and is generally the largest and most massive layer of any planetary body. Mantles are on the planetary bodies that have undergone differentiation by density.

The mantle is composed primarily of heavy metals, such as iron, nickel, and others. The state of the mantle was described as plastic. Many divide the mantle into further such as  the asthenosphere and lithosphere.

Mantle rocks are soft and able to move over the course of millions of years at great depth and pressure. The transfer of heat and material in the mantle helps to determine the landscape of the planet.

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Answer:

The chloroplast has an inner and outer membrane with an empty intermediate space in between. Inside the chloroplast are stacks of thylakoids, called grana, as well as stroma, the dense fluid inside of the chloroplast.

Explanation:

Hope it helps.

All of the following statements support the cell theory except all cells contain a nucleus. Thus, the correct option for this question is B.

The cell theory was proposed by two famous scientists. i.e. M.J. Schleiden and T. Schwann. There are three assumptions that fall under the cell theory.

Cell theory was further refined by German biologist Rudolf Virchow in 1855. According to him, all cells are arising from pre-existing cells.

According to the three assumptions given above, the one which is not matched as per the options is that all cells contain a nucleus.

Therefore, the correct option for this question is B.

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The statement that is not considered as cell theory is all cells contain a nucleus. The correct option is L.

Cell theory is basically a biological theory first given in the mid-nineteenth century that states that living organisms are made up of cells, that cells are the basic structural/organizational unit of all organisms, and that all cells originate from pre-existing cells.

According to the cell theory, all biological organisms are made up of cells; cells are the basic unit of life, and all life evolved from preexisting life.

The cell theory is now so well-established that it serves as one of biology's unifying principles.

Theodor Schwann proposed the classical cell theory in 1839. This theory is divided into three parts. The first section asserts that all organisms are made up of cells.

Thus, the correct option is L.

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Answer:

Mercury has no moon

Explanation:

If you are on Edge then this is your answer enjoy.

The characteristic that makes Mercury different from Earth is that Mercury has no moon,

Mercury  can be regarded as the smallest planet in  solar system, however is bigger that Earth's Moon.

Earth serves as the third planet and fifth largest planet in the solar system.

However, the difference between them is that Mercury has hot surface temperatures and there is no moon

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Answer:

When they swap places.

Explanation:

Since they both create new combinations of genes.

i don't know much about this but i do hope it helps!

Answer: Lysosome

Explanation: A lysosome is a membrane-bound cell organelle that contains digestive enzymes. Lysosomes are involved with various cell processes. They break down excess or worn-out cell parts. They may be used to destroy invading viruses and bacteria. (Hope this helps!)

Answer:

deficiency

Explanation:

PENN

Answer: humans have a very high brain-weight-to-body-weight ratio, but so do other animals. ... Other intelligent animals, such as monkeys and dolphins, also have these folds in their cortex, whereas mice have smooth brains, he said. Humans also have the largest frontal lobes of any animal, Holland said.

Explanation:

The geometric shape that will best model the cells would be a flat round disc.

The image is that of a structure containing many cells that are similar in appearance, most likely a tissue.

Each cell can be seen to be somewhat round in shape, typical of many animal cells.

Thus, in order to model such cells, flat round discs will be ideal. Using any other shape will be totally out of place.

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C. Continental shelf - correct choice

Submarine canyons are unequivocally primitive, often found in deep confabulations of the continental shelf.

Answer:

C

I just didnt do it

Explanation:

Axon is the part of the nerve cell which would be expected to be labelled which can be seen by washing TTX onto a neuron. Thus, the correct option is A.

Tetrodotoxin (TTX) is a natural toxin which interferes with the function of voltage-gated sodium channels in the cell membrane. Tetrodotoxin blocks the sodium permeable pore in the membrane by binding tightly to a specific part outside the channel proteins and block all the sodium-dependent action potentials in the membrane.

Applying TTX to a neuron would block all the impulses in the neuron, preventing it from firing action potential, regardless of the impulse. Labeled TTX could be visualized on the cell's axon, where the voltage-gated sodium channels are concentrated.

Therefore, the correct option is A.

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Answer:

Primary Consumer - 1000 kCal

Secondary Consumer - 100 kCal

Tertiary Consumer - 10kCal

Explanation:

Each time a consumer consumes the previous organism, the energy that is consumed is ten percent of the last one. This is called the ten percent rule.

Answer: Using fossil fuels pollutes the air and increases carbon levels by releasing carbon dioxide when burned, which makes climate change worse.

Answer:

B. Hypotheses suggest new questions for further investigations.

Explanation:

A diploid cell always contains two complete sets of chromosomes, which is described as 2n.

Two complete sets of chromosomes are present in a diploid cell. The majority of human cells are diploid, with 23 chromosomal pairs totaling 46 chromosomes. This consists of a pair of sex chromosomes and 22 pairs of autosomes. The mother and father each contributed one copy of each pair of chromosomes to the individual.

Through the process of mitosis, diploid cells replicate and maintain the same number of chromosomes by making a copy of each chromosome and dividing their DNA equally among their daughter cells.

Blood cells, skin cells, and muscle cells are examples of diploid cells. These cells are called somatic cells. Different organisms have different numbers of chromosomes.

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Answer:

0.2 (or 20%)

Explanation:

The allele frequency can be calculated by counting how many times an allele appears in a population and then by dividing this number by the total number of alleles of the gene. In this case,

- Genotype BB = 30 moths >> 60 copies of the B allele

- Genotype Bb= 12 grey moths >> 12 copies of the B allele and 12 copies of the b allele

- Genotype bb= 3 white moths >> 6 copies of the b allele

The total number of copies of the gene is:

Dominant (B) allele = 60 (BB genotype) + 12 (Bb genotype) = 72 B alleles

Recessive (b) allele = 12 (Bb genotype) + 6 (bb genotype) = 18 B alleles

Then, 72 + 18 = 90 alleles  

Allele frequencies:

Dominant (B) allele = 72/90 =  0.8 (or 80 %)

Recessive (b) allele = 18/90 = 0.2 (or 20%)

The frequency of the white allele b alleles for the moth-coloration gene in the population - 40%

The frequency of an allele can be calculated by dividing the number of times the allele of interest is observed in a population by the total number of copies of all the alleles at that particular genetic locus in the population

Total number of b alleles = number of alleles present in recessive bb + number of alleles present in heterozygotes Bb  

the frequency of an alele = 18/45

= 40%

Thus, the frequency of the white allele b alleles for the moth-coloration gene in the population - 40%

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Explanation:

The process of cell division by which most of cells divide for growth is called mitosis.

In this process, each cell called mother cell divides to form two identical daughter cells. The daughter cells have the same number of chromosomes as mother cell. It helps in growth and repair of tissues in organisms.

Specific cells of reproductive organs or tissues in animals and plants divide to form gametes., which after fertilisation give rise to offspring.

Which involves two consecutive divisions. When a cell divides by meiosis it produces four new cells instead of just two .

The new cells only have half the number of chromosomes than that of the mother cells.

Hope you understood!

Answer:

No-1st

No-2nd

No-3rd

Yes-4th

No-5th

Explanation:

No to 1st one

No to 2nd one

No to 3rd one

Yes to 4th one

No to 5th one

No means DON'T PICK THAT ONE

Yes means pick that one

Answer:

Complex carbohydrates contain longer chains of sugar molecules than simple carbohydrates. The body converts these sugar molecules into glucose, which it uses for energy. As complex carbohydrates have longer chains, they take longer to break down and provide more lasting energy in the body than simple carbohydrates

Explanation:

Answer:

A.) Complex carbohydrates have more chemical bonds to break than simple sugars, which takes longer for the body to digest and provides more units of energy for the body to use.

Proof:

Answer:

D

Explanation:

the circulatory absorbs nutrients and carries the chemical to signal through endocrine to control the speed of digestion.

Answer:

Eating

Explanation:

Organisms eat one another to get energy.

Answer:

I am pretty sure that the answer is A.

Explanation:

Protein kinases regulate the cell cycle by giving the "go-ahead" or "stop" signal at checkpoints in the cycle. A mutation/disruption in the protein kinases can result in it not doing its job properly. As a result, it can give the 'go-ahead' signal to all cells (mutated or not) to continue through the cell cycle. A distrupted kinase will infleunce the enviornment for a cancer cell as the cancer cell can continue to divide continuously.

I do not think the answer is D because G-couped receptirs are not involed in the regulation of the cell cycle. Additionally, I do not think the answer is C since the production of cAMP (a secondary messgenger amplifies transduction signals; this doesn't have anything to do with cancer?) Finally, between A and B I know that a direct result of cancer is due to a distruption in either protien kinases or  growth factors (not in the answer choices). Since one of the factors that  leads to cancer is present in answer choice A, I think that is the one. However, this is just my reasoning, I am not 100% sure!

Answer:

the other 60% of energy is stored away for further use in the cell

Explanation:

i hope im right

In the cell from glucose, 40% of energy is utilised to make ATP and the rest 60% is used in the process of making ATP. So 100% of glucose cannot be converted into ATP.

Glucose is a major source of energy. It has carbon, oxygen, and hydrogen . Due to the presence of oxygen, it can easily break down to produce energy during times of need.

Glucose is broken down into pyruvate by the process of glycolysis. In this process, the net gain is 2 ATP. Pyruvate converts into acetyl CoA. ATP is required in this process. Acetyl CoA enters the Krebs cycle.

To enter the mitochondria, ATP is required. Acetyl CoA enters the krebs cycle and electron transport chain.  The FADH₂ , NADH are broken. Proton gradient is formed due to the electron movement. Then ATP is formed due to the proton gradient across the inner mitochondrial membrane . To make ATP a lots of ATP have used in the process. So net gain of ATP of a glucose is 40% as rest 60% has used in the process .

Hence, 40% of energy of glucose make ATP, and the rest 60% is used in the process of making ATP. 

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Answer:

Law of segregation

Explanation:

Mendel's three laws of inheritance are:

The law of segregation states that diploid organisms possess two alleles for each trait, and that only one of these alleles is passed on to their offspring. It is totally random which allele is passed on to the next generation.

Answer:

It Is osmosis occurring

Explanation:

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