The Hawaiian Islands are riding on the Pacific Plate as it moves northwest. They are being formed as the plate moves over a hot spot in the mantle. Where is the next volcano likely to form?

Answer:

Pseudomonas aeruginosa,  Serratia marsescens,  Klebsiella pneumoniae or Escherichia coli

Explanation:

Meningitis is the inflamation of the meninges (membranes that cover the brain and spinal cord) due to the infection of the fluid around it. Some of the symptoms are fever, sleepiness, nausea and vomiting, stiff nech and seizures.

Meningitis can be caused by Gram negative bacterie such as H. influenzae., Escherichia coli,  Klebsiella pneumoniae,  Pseudomonas aeruginosa or  Serratia marsescens. From these options only Pseudomonas aeruginosa,  Serratia marsescens,  Klebsiella pneumoniae and Escherichia coli are rod-shaped gram negatives.

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Answer:

bsx m

Explanation:

Answer:

regulating gene expression

Explanation:

A non-coding RNA is one that cannot participate in the protein formation process, because it does not code for any of them. Although it appears to have no function, non-coding RNA plays an important role in regulating gene expression, which is how the cell controls the expression of genes, preventing them from being expressed when they are not needed. In this way the cell saves energy and inhibits the accumulation of unnecessary molecules.

Answer B.frontal lobe.

Explanation:

This lobe controls all cognative activities.since logical judgment is a cognitive activity this is the correct answer.

It is part of the brain largest portion called the cerebral cortex. Divided as left and right frontal lobes.

It is located at the front of the head enclosed in the front skull bones,where it divideds into Right and Left frontal lobes.

The right lobes controls the left sides of the body and the left controls the right sides of the body for voluntary movement and activities. Therefore ,it receives sensory imputs from all parts of the body to make judgments about the immediate environment.

NOTE: Parietal lobe coordinates information about temperature, taste.

Occipital lobe-coordinates vision with movement.

Temporal lobe-coordinates memory with taste, sight, sound.

Premotor cortex: coordinates muscle activities for exact movement

A viral ailment that generates inflammation in the brain concerning the central nervous system (CNS) of mammals and humans is called rabies disease.

The correct answer is:

Option E) Post-exposure prophylaxis.

This can be explained as:

Therefore, post exposure prophylaxis is administered.

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Answer:

sexual arousal

Explanation:

A vaginal photometer is an instrument used in vaginal photoplethysmograph - a medical procedure that uses light to determine the amount of blood in the wall of the vagina. It is a procedure used to estimate or evaluate the level of sexual arousal in females.

A penile plethysmograph on the other hand is a device used to measure the blood flow to the penis during penile plethysmography procedure. It uses the same principle as the vaginal photometer and can be useful in the evaluation of erectile functions or sexual arousal in males.

Hence, both device measures sexual arousal in females and males respectively.

Answer:

a.True

Explanation:

Prior to obtaining the biological samples for research purposes, the donor must be informed of the consequences and risks of such obtaining for their health so that they can consent to the use of said sample.

The regime for obtaining biological samples for research purposes is stricter when it comes to minors or disabled, since the concurrence of conditions such as risk minimization, the provision of relevant knowledge of vital importance for the purpose is required of the investigation that cannot be obtained otherwise and the authorization of the legal representatives or, where appropriate, that there are guarantees on the correct consent of the source subject.

The answer is false. Informed consent involves fully explaining all planned future uses of biological samples to the research subject.

False. When a research project includes the collection of biological samples, all planned future uses of the samples, identifiers, and the data obtained from the samples must be fully explained to the research subject. This is part of the informed consent process. Informed consent involves informing the research participant about what to expect during the experiment, any risks involved, and the implications of the research, and then obtaining their consent to participate.

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Answer:

B) Binocular stereoscopic vision, grasping hands and feet, and nails on the toes and fingers all co-evolved to enhance visual predation on insects in the terminal branches of trees.

Explanation:

A characteristic of the primates, when they evolved was the replacement of the claws by ones, the binocular vision, which generated these two characteristics the option to see and take better the insects and fruit in high branches

The most consistent hypothesis for the evolution of primates is that grasping hands and feet allowed early primates to access new food sources, and binocular stereoscopic vision developed later for preying on insects.

The most consistent hypothesis for the evolution of primates is option C) Grasping hands and feet allowed early primates to exploit fruit, flowers, and nectar in the terminal branches of angiosperms. Later, binocular stereoscopic vision evolved as an adaptation to predation on insects.

Plesiadapiforms, the group of animals including Carpolestes Simpson, lacked morphological variation of modern primates, but C. Simpson had well-adapted hands and feet for grasping and moving on branches, an opposable big toe, and a dentition indicating a diet of fruit. This suggests that the evolution of grasping hands and feet allowed early primates to access new food sources, which later led to the development of binocular vision for prey capture.

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Answer:

3'-GTGAAT-5'

Explanation:

Answer:  for cutting DNA sequences

Answer:

b. A tendon joins a muscle to a bone; a ligament joins a bone to a bone.

Explanation:

Answer:

An operon consists of sets of genes that are part of single transcription unit and is under the control of a single promoter. Lac operon is found in E.coli which consists of three structural genes which code for beta-galactosidase, permease, and transacetylase.

These genes are under the control of one promoter which is present upstream of these structural genes. The role of promoter is that it provide the binding site for RNA so that the RNA polymerase can start the transcription of these structural genes.

Between structural gene and promoter, operator region is present which when binds to repressor protein then it prevents the binding of RNA polymerase to the promoter and stops the transcription initiation.

The promoter in the E. coli lac operon functions as a binding site for RNA polymerase, aiding in the transcription of genes necessary for lactose metabolism. Its activity is dependent on the presence of lactose and other regulatory proteins.

The function of the promoter in the E. coli lac operon is to provide a binding site for RNA polymerase, which initiates the transcription process. Located between the promoter and the three genes is a region called the operator. In the absence of lactose, a protein known as a repressor binds to the operator, blocking RNA polymerase from binding to the promoter and resulting in little production of protein. When lactose is present, a metabolic end product of lactose binds to the repressor, preventing it from binding to the operator. This allows RNA polymerase to bind to the promoter and transcribe the three genes, enabling the bacterium to metabolize lactose. The promoter also interacts with other elements like the CAP-cAMP complex in the absence of glucose to promote transcription.

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Answer:

The correct answer is A) muscle.

Explanation:

Gorillas are big animals that use strength for getting food but also for attracting females. Their muscle tissue is the most abundant in all species and can be seen in their large and strong bodies.

B

Gene flow is the transfer of genes/alleles from one population to another.

Explanation:

Gene flow adds to genetic diversity of the population into which the gene transfer occurred. In this case the pollen carries different forms of genes and alleles from the population it came from and when it cross-fertilizes with the new population, it adds to the genetic pool of the new population.

Another example of gene flow is through migration - the individuals of  from one population join another population and continue to mate randomly in the new population. The immigrants come with new alleles of genes that become amalgamated into the new population by cross-breeding.

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Answer:

True. In sequencing, the first few sequences and the last few sequences may not accurately sequenced hence cutting DNA into smaller pieces would result in a larger portion of DNA inaccurately sequenced than if a longer sequence of DNA was sequenced with the sequence of interest in the middle.

Answer:

The answer is letter D

Explanation:

Purple, spherical-shaped organisms arranged in chainlike formations.

Answer:

Staphylococcus aureus

Explanation:

S. aureus is a toxin producer and even though the bacteria can be destroyed with heat, its toxin is heat stable, this means that it can survive after heating producing food poisoning. This kind of poisoning occurs in foods that require hand preparation, like the potato salad or ham in the example, especially because in the example those food were at room temperature, in the picnic, allowing the S. aureus to produce the toxin.

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Answer: Parenchyma cells

Explanation:

The parenchyma cells of plants are the functioning cells organ-tissue of non-woody part of soft plants and fruits.

The structure of the parenchyma cell consist of thinner walls and retain the ability to divide quickly, differentiate into other cells and stay alive at maturity. Parenchyma cells are less useful in structural part of plants but capable of photosynthesis, store water and nutrients.

The aggregate of parenchyma cells form a majority of ground tissue in the plant. They cells of parenchyma are capable of metabolic activity, such as growth and photosynthesis

Answer:

Option C

Explanation:

Definition of environmental justice: Environmental justice is the fair treatment and meaningful involvement of all people regardless of race, color, national origin, or income with respect to the development, implementation, and enforcement of environmental laws, regulations, and policies.

Global winds are caused due to the unequal heating of the planet by the sun, and they're named according to the direction they flow. While horizontal movement of wind is a product of the pressure change from high to low, vertical change happens because of density.

Answer: multiple cloning site

Explanation: the selectable marking characteristics of given vector is an advantage of coexpression of recombinant protein, optimization phase cloning procedures as well as multiple manipulation within the same host strain that gives it it's name.

Answer:

The correct answer will be- it is scientifically possible

Explanation:

Taking the DNA sample from the coffee cup in solving the criminal cases can be performed.

This could happen as touching the cup can help extract the DNA sample as the act of touching leave few cells which can provide the minute DNA sample. This sample can be replicated via PCR technique which could help solve the case. The case can be solved by comparing the DNA samples of the suspect and the collected samples.

Thus, it is scientifically possible is the correct answer.

Answer:

Explanation:

The prokaryotic cell or prokaryotes are single celled organisms that do not posses organelles or membrane bound structures hence they do not have a nucleus but they posses single chromosome which is a piece of circular double-standard DNA in the nucleoid.

In a typical prokaryotic cell, DNA appears as a singular, circular chromosome localized in a region known as the nucleoid. Prokaryotic cells lack a membrane-bound nucleus and may also carry plasmids, which are smaller extra-chromosomal DNA. Other cell features include ribosomes, cell membrane, and a cell wall, with some cells having flagella, pili, and capsules.

The appearance of DNA in a typical prokaryotic cell is unique compared to eukaryotic cells. In prokaryotes such as bacteria and archaea, the DNA is typically a single, circular chromosome that is found in a region called the nucleoid. Unlike eukaryotic cells, prokaryotic cells do not have a membrane-bound nucleus to contain their DNA. Additionally, prokaryotic cells may also carry extra-chromosomal DNA known as plasmids, which are smaller circles of DNA that can provide advantages such as antibiotic resistance.

Aside from the nucleoid containing the genomic DNA, prokaryotic cells also have other structures such as ribosomes for protein synthesis, a cell membrane that defines the boundary of the cell, and a protective cell wall. Some prokaryotic cells also have additional features like flagella for movement, pili for adherence, and a capsule for protection against the host's immune system, though not all bacteria will have these structures.

Answer:

The following scientists have performed different experiments that were helpful in providing evidence that DNA is the genetic material. The summarize experiments are as follows-  

1.  Fredrick Griffith- the experiment was an experiment performed in 1928. It was one of the experiments that exhibit that bacteria can acquire through the process of transformation.

2 Oswald Avery, Maclyn McCarty, and Colin MacLeod: this experiment exhibited that DNA can transform the cell properties, and clarifying the chemical properties of the genes.

3. Alfred Hershey and Martha Chase: They determined that even the bacteriophage has a protective coat around it but the DNA that is present inside is the genetic material that has the ability to produce the progeny inside a bacterium.

4. Erwin Chargaff: He proposed tow rules which were named after him as chargaff rules. This tells that natural DNA the number of cytosines is equal to the number of guanine units and adenine to Thymine units.

Answer:

Depletion of ground water as a result of increased usage leading to lower water table.

Explanation:

The presence of small farms nearby coupled with the growing city that is just 50 miles the north, would mean more pumping of water for use by households, farms and even industries located in the growing city. The water level would definitely drop beyond pump intake as more wells are drilled, and water usage increases as well. The lowering of the water table is the most likely reason for the well becoming dry.

Answer:

The myelin sheath are the glial cells which present in the neurons. It acts as an insulator for the impulse. Inside the myelin sheath the impulse propagates in high speed. Because there is no depolarization occured in it. Therefore, the nerve impulse jumps from one sheath to other and it is called saltatory movement.  

The gap between the two myelin sheath is called nodes of ranvier. It contains sodium ions and have voltage gated channels. When the action potential passes through the myelin sheath, the depolarisation happens due to entry of excess sodium ions into the non - myelinated sheath / nodes of ranvier.  

When there is excess sodium ions present in the axon, again repolarization occurs and action potential occurs in the myelin sheath. Myelin sheath contains lipids which enhance the action potential.

Answer:

Disturbances can create patches of different habitats in a community.

Explanation:

Disturbances such as fire etc can cause a bigger and wider ecosystem to be destroyed from certain places. This will result in the formation of patches of different habitats. Each habitat will evolve into a different community. Some of the patches of habitat might have an abundance of resources, hence making life easier for the organisms inhabiting there. Some of the habitats might have rare resources hence, making life to be difficult in those areas.

Answer:

In comparing stop-transfer and internal start-transfer sequences in proteins, it can be said that both are hydrophobic.

Option: (b)

Explanation:

Answer:

level of testosterone

Explanation:

The level of testosterone produced is a determinant factor which influences the effect they have on the hypothalamus and the pituitary in regulating the release of GnRH, FSH, and LH in the male reproductive system.  

A high level of testosterone would lead to the production of the hormone called inhibin, which is released into the blood. The GnRH and FSH, which are responsible for the initiation of spermatogenesis and secretion of testosterone in the testes, are inhibited by inhibin. This causes the GnRH and FSH from being produced further by the hypothalamus and pituitary when the testosterone level rises beyond normal level.

When the testosterone level drops below the normal level, the release of inhibin stops, while the hypothalamus and the pituitary resume the release of GnRH, FSH, and LH to initiate spermatogenesis and the secretion of testosterone.

Answer: This is called Monohybrid Experiment

Explanation: Monohybrid Cross

P Generation TT     *   tt

  Tall plants     Dwarf plants

F1 Generation  

T T

t Tt Tt

t Tt Tt

In F1 generation;

There are 100% Tt Genotype and 100% Tall plant Phenotype

F2 Generation

F1   *   F1

( Tt   *   Tt )

T t

T TT Tt

t Tt tt

In F2 Generation;

Genotype

There are 25% TT (homozygous dominant, tall plants).

50% Tt (heterozygous tall plants), and

25% tt (homozygous recessive dwarf plants).

This is how dwarf characteristics reappear in the second generation.

The Phenotype of F2 generation is 3:1  (Tall : Dwarf)

I have attached a document to this answer to facilitate effective understanding if there is anormalities in arrangement the Punnet Square.

Answer:

constitutive mutations

Explanation:

Constitutive mutations -

They are the strains which uninterruptedly make proteins , and therefore , can lead to excess of protiens and the process is very difficult or nearly impossible to stop , is known as the process of Constitutive mutations .

One of the example of this process of Constitutive mutations is ,

The strain with lac operon mutation which can even results in th etranscription of the lac genes .

Hence , from the statement of the question ,the correct term is Constitutive mutations .