………….,,…….I need help with this I’m not very smart

As per Chargaff's rule the amount of DNA present in purine is equal to the amount in pyrimidines. G=C , guanine is 36%, A+T+G+C + 100% if C and G are 36 and 36 both, the remaining A and T are 100-72= 28 that is 14 and 14.

A DNA is made up of deoxyribonucleotides along with the ribose sugar and the phosphorous group. The collective is DNA.

According to CHAR GAFF it is the amount of DNA present in purine is equal to the amount of DNA present in pyrimidines where the both are having equal amount.

A=T are having 14% and 14% whereas C and G are having 36% and 36%.

Therefore the ratios are 14,14,36 and 36.

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Answer:

Every point on a contour line is of the exact same elevation

Explanation:

Every point on a contour line is of the exact same elevation. In other words, contour lines connect points of equal elevation. By definition, contour lines separate points of higher elevation from points of lower elevation.

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Silent mutation is used to describe a mutation that has no effect on the protein produced from the mutated gene.

Silent mutations are DNA mutations that have no discernible effect on the organism's phenotype. They are a subset of neutral mutations. The terms silent mutation and synonymous mutation are frequently used interchangeably; however, synonymous mutations are not always silent, and vice versa.

A silent mutation is a type of substitution mutation, or point mutation, in which the change in the gene's DNA sequence has no effect on the amino acid sequence.

Silent mutations cause a change in one of the letters in the triplet code that represents a codon, but the amino acid that is coded for remains unchanged or similar in biochemical properties despite the single base change.

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Answer:nucleus

Explanation:

As we know there are three types of organisms capable to perform photosynthesis cyanobacteria (eubacteria), plants (Plantae), and algae (protist), so we can say that the correct answer is option B fungi.

Answer:

A, Cell division

Explanation:

During cell division, in the phase called "anaphase" the spindle fibers pull apart the chromosomes to separate sides.

Since we now know it is from the phase anaphase, it could not be B or D.

We are now left with A and C.

Centrioles function is to organize the spindle fibers, this has nothing to do with pulling apart chromosomes.

Cell division has phases(PMAT), one of which is anaphase where this function occurs.

Answer:  1. Helicase: Unwinds DNA.

2.;Topoisomerase: Prevents DNA supercoiling.

Single strand binding proteins: Separates single DNA strands.

Primase: Creates complementary RNA primers.

DNA polymerase: Replicates DNA.

Exonucleases: Removes RNA primers and replaces with DNA.

DNA ligase: Connects Okazaki fragments.

Explanatio

DNA replication is a process of the formation of new DNA strands from old ones.

DNA replication is the process by which a cell makes an identical copy of its DNA before cell division occurs. This ensures that each daughter cell receives a complete set of genetic information. This method is semi-conservative. DNA replication is a complex and tightly regulated process that ensures accurate duplication of genetic material.

Hence, this is the correct order of the steps of DNA replication.

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Your question is incomplete, most probably the full question is this:

Arrange these steps of DNA replication in the order in which they occur.

fructose-6-phosphate; fructomannose isomerase

Mannose first undergoes phosphorylation by hexokinase before entering glycolysis. The phosphomannose isomerase enzyme then isomerises the freshly generated mannose-6-phosphate into fructose-6-phosphate. The sugar can now follow the typical glycolytic pathway because it is in the right shape.

Through fructose-1-phosphate, glucose enters the glycolytic route, mannose is phosphorylated to become mannose-6-phosphate, and galactose is enzymatically changed into glucose-6-phosphate.

Although both enzymes can phosphorylate other hexoses including fructose and mannose, they can also support development on glucose.

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the mutation rate of the achondroplasia gene in this population is 8.50 × 10⁻⁵

It is Given that Achondroplasia is an autosomal dominant disorder,

The total births = 94075,

Dwarfism achondroplasia affects ten infants.

The parents of two infants are also dwarfs. As a result, they passed on this condition to them.

Dwarfism caused by achondroplasia is an autosomal dominant condition. Therefore, those who inherit them from their parents must also have dwarf parents; those who do not have dwarf parents are the result of an achondroplasia gene mutation.

Infants having achondroplasia because of mutation = 10 - 2 = 8

8 infants have the achondroplasia gene mutation.

mutation rate = Infants with gene mutation / Total Infants

mutation rate  = 8 / 94075 = 0.0000850 = 8.50 × 10-5

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Transcriptional control-proteins increase the rate of transcription by binding to. mRNA sequences within the DNA.

Most CCPs prevent activation of the host cell surface complement system and protect host tissues from autoimmune damage. As such, these proteins play important roles in autoimmune diseases and cancer.

Membrane-bound complement regulatory protein (mCRP) is one of the factors that perform a tight regulatory function on the complement system, thereby protecting the body from the harmful effects of excess complement.

Control of the complement system is maintained by a group of cell surface and circulating proteins called complement regulatory proteins. Expression of cell surface complement regulatory proteins varies between tissues.

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Answer:d

Explanation:

1 a 2 d 3 b 4 a

The respiratory system's alveoli are where breathing takes place (option -B) is correct answer.

in the lungs

The bronchi within the lungs branch into smaller bronchi and still smaller tubes known as bronchioles. Alveoli, which are tiny air sacs at the ends of bronchioles, are where the actual exchange of oxygen and carbon dioxide occurs.

Your lungs, blood vessels, and airways are all a part of it. A component of the respiratory system are the muscles that move your lungs. Together, these components circulate oxygen throughout the body and eliminate waste gases like carbon dioxide.

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In a specific bacterial cell, b-galactoside permease is found in relatively low concentrations compared to large levels of -galactosidase, which is due to a mutation in one of structural genes.

What constitutes a mutation?

an alteration to the typical dna sequence so at particular gene locus. polymorphisms, which are mutations, can have a positive, negative, or neutral impact on how cells function, despite the fact that the term is frequently used negatively.

A mutation results in what?

A genetic mutation occurs to the dna sequence of a gene that results in the production of an alternative. The dna sequence of that gene undergoes a permanent alteration as a result. for humans to evolve a evolution that occurs over a number of generations genetic variety is crucial. One individual experiences a random genetic mutation.

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Ventral and dorsal nerve roots compose the spinal nerves. The posterior/dorsal root is composed of afferent fibers carrying sensory information. A) sensory input would be blocked.

Spinal nerves are composed of motor and sensory fibers. They begin as nerve roots that emerge from spinal segments.

The spinal nerve is composed of the anterior and posterior roots. Each segment in the spinal cord has four roots,

Anterior or ventral roots have efferent fibers that drive stimuli from the central nervous system to the target structures.

The motor neurons that control skeletal muscles are located in the ventral roots.

Posterior or dorsal roots contain afferent neurons, that carry sensory information from different structures to the central nervous system.

The cell bodies of the dorsal roots neurons are located in the sensitive ganglia of the spinal nerve.

According to this framework, if the posterior root of a spinal nerve is severed sensory input would be blocked. Option A) is correct.

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Water that started in the ocean could end up in a river inland as a result of the hydrological cycle via precipitation and also through land runoff.

This is also referred to as a biogeochemical cycle and it depicts the continuous movement of water in different areas on the surface of the Earth.

Precipitation such as rain, snow helps to ensure that water is recycled in the ecosystem so as  to prevent shortage or scarcity of such important resource in the ecosystem.

When there are high tides in the ocean , the water rises and moves several kilometers to other water bodies such as rivers thereby turning it from  river freshwater into brackish water which is therefore the way in which the water from the ocean gets to the river.

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Answer:

b

Explanation:

If the nervous system of the neurotransmitters in your body were suddenly blocked from passing into the synaptic spaces then your neurons would not be able to communicate and you would die.

If your body lacked sufficient neurotransmitters, your neurons would be unable to communicate with one another, and you would pass away. Neurotransmitters are important because neurons need them to communicate.

If a medicine suppressed the neurotransmitter receptors, the damaged neurons would be unable to communicate with other neurons or tissues. This occasionally has positive benefits for the organism, but it can also be harmful or even fatal.

These neurotransmitters diffuse across the synaptic gap, attach to receptors on postsynaptic cells, change the membrane potential of those cells, and potentially even trigger the postsynaptic neuron to repeat the cycle.

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Answer:

you would die

Explanation:

if the cells stopped working you will die

The person who will collect the data, the environment in which the data will be collected, and the element who will provide the data. Hope this helped!

Answer:

Both nucleic acids and proteins are made of the repeating monomer units, which is why they are considered polymers. Nucleic acids are made of nucleotides, which consist of a phosphate, a 5-carbon sugar, and a nitrogenous base. Proteins are composed of amino acids.

Explanation:

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A phage that was in a lysogenic life cycle excises itself from the host's genome and some of the host's DNA is excised along with the phage DNA.

The phospholipase C-protein kinase C (PLC-PKC) pathway is stimulated after Gq proteins are activated, leading to an increase in intracellular Ca2+ concentrations. This transduction mechanism is what causes this neuroexcitation.

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The best area for digging down to the groundwater (in order to construct a well) is where the saturated zone is fifteen meters deep.

The question is incomplete. The complete question is:-

A farmer is examining cross-sections of land owned by him in order to determine the location to construct a well. Which of the following given options describe the best suited area for digging down to the groundwater?

(A) where the saturated zone is fifteen meters deep,

(B) where the water table is at hundred meters deep,

(C)where the unsaturated zone is fifty meters thick,

(D)where there is a layer of clay (twenty-five meters thick) at the surface.

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Answer:

The saturated zone is 15 meters deep

Explanation:

The answer is letter A. cytoplasm. It is known to have a water substance where the cell organelles are suspended, and it is also a site for the biochemical processes within the cell.

The explanation that can be given for the slow digestion of proteins is that the liquid from the small intestine contained negligible amount of the proteolytic enzymes as compared to the pure isolated form of protease enzyme.

The enzymes which are responsible for the digestion of proteins are known as proteolytic enzymes. They are also termed as proteases. Proteolytic enzymes are synthesized by plants, animals, bacteria as well as fungi. Protease enzyme is necessary for the breakdown as well as absorption of proteins.

This enzyme catalyzes the hydrolysis of peptide bonds that are present in a protein molecule and transforms them into dipeptides, tripeptides as well as amino acids.

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The process of glycolysis is the breakdown of fatty acids molecule in the body.

Glucose is metabolized to pyruvate by glycolysis in the cytoplasm, and pyruvate is fully oxidized to ATP by the TCA cycle and oxidative phosphorylation in mitochondria. Upon feeding, fatty acids are synthesized by de novo lipogenesis using products of glycolysis.

Glycolysis is the process by which glucose is broken down for energy. Produces his two molecules of pyruvate, ATP, NADH, and water. This process takes place in the cell's cytoplasm and does not require oxygen. Found in both aerobes and anaerobes.

This is the first step in cellular respiration. In glycolysis, sugar molecules are broken down to release the energy needed for cell metabolism. It is found in the cytoplasm of cells. The main purpose of glycolysis is the synthesis of thousands of ATP molecules that are used in various cellular metabolisms.

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Answer: A. Cell divides into two daughter cells

Explanation:

During cytokine, the large cell must divide into two daughter cells to the last phase of meiosis.

Based on the DNA sequence, the species that is most closely related to the unknown species is species 1, as it has more homologies than species 2. A bigger distance can be traduced in a higher number of mutations or modifications in the DNA sequence.

The correct answer is: Species 1.

The best option would be the letter A. They supply freshwater to support life on Earth.

Freshwater is the ultimate source of water in the terrestrial biome. It is not only important in the terrestrial biome but also in the aquatic ecosystem as it helps in transporting nutrients (ex. river is connected to the ocean).

As we know that plants reproduces through the process of vegetative propagation as vegetative propagation can be defined as the type of asexual reproduction, which takes place in plants to form new plants from a parent plant part.

The term vegetative propagation has been defined as the type of asexual reproduction, which takes place in the plants to form new plants from a parent plant part. Plants produced by the process of vegetative propagation are identified as clones of their parent plants as there has no involvement of genetic material during the process.

The formation of the new plants through the parts such as bulbs, grafting, tuber, cutting or  tissue culture are examples of the process of vegetative propagation.

Therefore, As we know that plants reproduces through the process of vegetative propagation as vegetative propagation can be defined as the type of asexual reproduction, which takes place in plants to form new plants from a parent plant part.

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