What is the difference between abiotic and biotic?

Answer:

Electricity. Coal alone provides half the electricity in the United States. ...

Heating. Oil and natural gas are commonly used for heating homes as well as providing heat for industrial applications.

Explanation:

The flow of energy in an aquatic ecosystem phytoplankton → zooplankton → fish → mammal.

The bottom-up effect means that a lower trophic level in the biological network affects the community structure of higher trophic levels by means of resource restriction.

whereas the top-down effect refers to a higher trophic level that influences the community structure of a lower trophic level through predation.

Thus, opotion "B" is correct.

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The photo shows a subduction zone between two oceanic plates. When two oceanic plates are converging, one is overridden and the other is pushed down the asthenosphere. The boundary of the subduction zone is usually marked by deep trenches.

ANSWER: C) Plate A is oceanic and Plate B is oceanic.

Answer:

c

Explanation:

Genes are translated into proteins and these proteins are transcribed into mRNA which determines specific traits.

Translation is the process which synthesize an amino acid sequence or protein product from the messenger RNA (mRNA) code. In this process the information is passed from DNA as messenger RNA and turns it into a series of amino acids which are bound together with peptide bonds.

In this, there is a translation from one code called as nucleotide sequence to another code called as amino acid sequence. Codons are the set of three letter combinations of nucleotides which is the genetic code, in which each of its corresponds with a specific amino acid or stop signal.

This process occurs in ribosome, which is also called the factory of protein.

Thus, genes are translated into proteins and these proteins are transcribed into mRNA which determines specific traits.

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Answer:

The use of anabolic steroids can raise blood levels of testosterone well above a person's normal range. As a result, the body may try to regulate testosterone levels by shutting down its own production of testosterone. In order to prevent this, people usually use anabolics in cycles of a few weeks on and then off.

Explanation:

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I could try help, what is the answer you are looking for?

YES, psychology uses scientific evidence to draw results and conclude outcomes.

Psychologists employ the scientific method in order to deduce results or conclusions. In psychology, first, the question or hypothesis is stated, then for which a theory is offered, and after that rigorous laboratory or field experiment is constructed in order to test the hypothesis. Psychologists apply the understanding obtained through research to build evidence-based strategies that solve problems and improve lives. Therefore, it is concluded that psychology is based on scientific evidence.

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Answer: pheromones can be detected by the olfactory system although humans under develop and underrate their smelling sense. Pheromones may be present in all bodily secretions but most attention has been geared toward axillary sweat which contains the odorous 16-androstenes.

Answer:

The two main types of nucleic acids are deoxyribonucleic acid (DNA) and ribonucleic acid (RNA). DNA is the genetic material found in all living organisms, ranging from single-celled bacteria to multicellular mammals.

Explanation:

*can i be the brainliest*

Answer:

aerobic respiration:

Oxygen is required for this type of respiration to take place.

anaerobic Respiration:

No requirement of oxygen in this process.

aerobic respiration:

involves the exchange of gases between the organism and the outside environment

anaerobic Respiration:

Exchange of gases is there but oxygen gas does not take part

The correct answer is 4. they can be used for ancestry in populations. Snp (single nucleotide polymorphism) is a type of genetic variation where a single nucleotide in the DNA sequence differs between individuals. '

SNPs are useful for a variety of purposes, including genetic association studies, gene mapping, and pharmacogenomics. However, they are not useful for ancestry in populations because they are not always informative about ancestry. The answer choices are:

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Correct Question:

Snps are useful because of all of the following except: group of answer choices

1. they are very stable

2.  they have high heterozygosity

3. they can be easily types there are a lot of them

4. they can be used for ancestry in populations

Answer:

b) Nucleus, ribosome, ER, Golgi complex

Explanation:

"B" is correct because, with protein production, DNA must first be transcripted to RNA in the nucleus, then the RNA travels to a ribosome at the ER to start translation (RNA to amino acid sequence). Finally, it is sent to the Golgi complex to be further processed and/or sorted to be transported to its destination (in this case, it will be sorted to be transported to the cell membrane).

"C" is incorrect: the mitochondria, cytoskeleton, and lysosome do not play a direct role in protein synthesis.

In a ribbon model of a polypeptide, broad arrows indicate β-sheets.

In a ribbon model of a polypeptide, the arrows indicate the direction of the β-strands that make up a β-sheet. β-sheets are formed when two or more β-strands align and hydrogen bonds form between them. The broadness of the arrow represents the width or depth of the β-sheet, which can vary depending on the number of β-strands in the sheet. In a ribbon model, the β-sheets are often depicted as flat, planar structures that extend outward from the polypeptide backbone. These β-sheets are an important component of protein structure, contributing to the stability and function of many proteins, including enzymes and structural proteins.

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The correct CPT® coding for a cystourethroscopy with brush biopsy of the renal pelvis is C) 52005, 52007.

CPT® code 52005 is for cystourethroscopy with biopsy(s) of urethra or bladder, while 52007 is for cystourethroscopy, with ureteral catheterization and brush biopsy of the renal pelvis. Both codes are needed to accurately report the procedure.

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The Hardy-Weinberg equilibrium is a theoretical model that describes genetic makeup of a population in equilibrium. Equilibrium is maintained by the balance of five factors: mutation, selection, migration, genetic drift, and random mating.

One of the factors that can prevent the population from deviating from Hardy-Weinberg equilibrium is large population size. This is because in  large population,  effects of genetic drift are greatly reduced. Genetic drift is the random fluctuation of allele frequencies that occur in small populations and can lead to a deviation from Hardy-Weinberg equilibrium.

In a large population, any random fluctuations in allele frequencies are likely to be small and quickly counterbalanced by large number of individuals carrying different alleles. So, large population reduces the chance of genetic drift and thus maintain the equilibrium.

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Answer:

These cells use active-transport systems in the apical domains of their plasma membranes to take up dietary sugars and amino acids from the lumen of the intestine. The uptake of glucose, for example, is carried out by a transporter that coordinately transports two Na+ and one glucose into the cell

Explanation:

When high levels of plasma calcium occur, the nurse would be aware that the hormone calcitonin is typically secreted.

Increased calcium excretion: Calcitonin promotes the excretion of calcium by the kidneys, reducing reabsorption and enhancing its elimination through urine.

By exerting these effects, calcitonin helps to regulate and lower plasma calcium levels when they are elevated. It works in opposition to another hormone called parathyroid hormone (PTH), which increases plasma calcium levels when they are low.

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The statement " An activated B cell can give rise to both plasma cells and memory cells" is True because When a B cell encounters an antigen and gets activated, it undergoes clonal expansion, producing a population of identical B cells.

Plasma cells are responsible for the production and secretion of large amounts of antibodies. They are short-lived cells that actively produce and release antibodies into the bloodstream to help fight off the current infection.

Memory B cells, on the other hand, have a longer lifespan and play a crucial role in long-term immunity. They "remember" the antigen they encountered, allowing for a rapid and robust response upon re-exposure to the same antigen. Memory B cells can quickly differentiate into antibody-producing plasma cells to mount a faster and more efficient immune response.

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Complete question:

Visit http://www.genomicseducation.ca/animations/gene_expression.asp and  play the animation.

Moving to the part of the animation that takes place in the nucleus, which molecule is shown as pale blue/green?

Answer:

snRNA molecules

Explanation:

snRNA means small nuclear RNA. These are small RNA molecules found in the nucleus and are involved in the RNA maturation process. In association with proteins, they compose the spliceosomes. They are involved in the processing phase of preRNA, which must maturate before its exportation from the nucleus as mRNA.

preRNA molecules are the first RNA transcribed and possess long intermediate sequences called introns that do not codify proteins. On the contrary, the encoding sequences are called exons.

Introns and exons alternate in the molecule, and the limit between them is called the splice site. Depending on the extreme we are looking at, they are 5´splice site or 3´splice site. Essentially, snRNA places in these sites and connects all the exons extremes of the preRNA, splicing out the introns. They remove the sequences that are not useful during the protein synthesis. This removal occurs before the RNA leaves the nucleus. Once the introns are excised the exons join to form the unique mature mRNA. This process is known as the splicing mechanism and turns preRNA into mRNA.        

Note: In the attached files, you will find some fragments of the animation with the respective labels.

Homozygous dominant, heterozygous, and homozygous recessive genotypic frequencies are 36%, 48%, and 16%, respectively:

Here: homozygous dominant genotype, AA

Aa for the genotype of heterozygotes

Homozygous recessive genotype for aa, 16 out of the 100 people in the population have the recessive trait, hence there are 16 in the population. Thus, the genotype frequency for aa is 16/100, or 0.16.

The frequency of the A allele plus the frequency of the an allele must equal one because there are only two potential alleles at this locus (A and a). This fact, along with the frequency of the aa genotype, can be used to determine how common the A allele and the aa genotype are:

frequency of aa genotype = q² = 0.16,

frequency of A allele = p = 1 - q

frequency of Aa genotype = 2pq,

q = 0.16 = 0.4

p = 1 - q = 0.6

frequency of Aa genotype = 2pq = 2(0.6)(0.4) = 0.48

frequency of AA genotype = p² = (0.6)² = 0.36

Therefore, the genotypic frequencies are:

AA: 0.36 or 36%

Aa: 0.48 or 48%

aa: 0.16 or 16%

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Answer:

C

Explanation:

DNA replicates because the second set of DNA will move into the new cell during telophase. double-check in your text but C is the most accurate answer given. A doesn't happen unless there's a breakdown in cell division, and D is for meiosis when a diploid cell divides into a haploid cell. B could be correct but it's not entirely accurate.

Answer:

A: Golgi body

Explanation:

The pectoralis major function is to adduct and medially rotate the humerus, and adduct the scapular forward, while the clavicular head flexes the humerus, and the sternocostal head extends it.

The pectoralis major is defined as the superior and largest muscle of the anterior chest wall which is a thick, fan-shaped muscle that lies beneath the breast tissue and forms the anterior wall of the armpit.

The muscles include the fibers which make up the pectoral muscles:

1. Pectoralis major

2.Pectoralis minor

3. Serratus anterior

Thus, the pectoralis major function is to adduct and medially rotate the humerus, and adduct the scapular forward, while the clavicular head flexes the humerus, and the sternocostal head extends it.

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Answer:

tricuspid and pulmonary valves

Explanation:

As the heart pumps blood, a series of valves open and close tightly. These valves ensure that blood flows in only one direction, preventing backflow. The tricuspid valve is situated between the right atrium and right ventricle. The pulmonary valve is between the right ventricle and the pulmonary artery.

Answer:

Dark Red

Explanation:

The blood that travels back to the heart and lungs is dark red. It has picked up carbon dioxide from the body cells, and it has left most of its oxygen with the cells. We can think of the dark colored, carbon dioxide-rich blood as "used” blood. This is the blood that the heart pumps into the lungs.

Answer:

The answer is Dark Red.

Explanation:

Hope this helps!!

The factors which  is not associated with the pons is Neck Movement.

Hence, option E is correct

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