The parts of the brain implicated in ADHD, such as the prefrontal cortex and the basal ganglia, feature large amounts of ____ activity. Many of the medications used to treat ADHD work by boosting the activity of this chemical.​

Answer:

Fetal.

Explanation:

The fusion of the male and female gamete leads to the formation of zygote. The zygote growth further in the womb of the female. The human being gestation period is  nine months.

The fetal development starts after zygote formation and till the birth of a baby.  The fetus grows regularly in size and development of the body organs completed in the nine months. The weight and size increase rapidly and baby face well developed at the 14 week of pregnancy. Finger nails are well developed around 40 weeks of pregnancy.

Thus, the correct answer is fetal.

Answer:

1.muscles have two attachment and must cross one point

2.muscles only pulls and don't push

3.insertion is the attachment that moves while that which is stationary is origin

4.muscles work in opposing pairs

5.muscle striation shows the pull direction

Explanation:

Question options:

A. Unremarkable, forgettable

B. Unintelligent, not educated

C. Unimpressive, poorly built

D. Unfavorable, boding ill

Answer:

Unfavorable, boding ill

Explanation:

The Scarlet Letter is a romantic historical fiction story written by an American author Nathaniel Hawthorne that was published in 1850.

While reading this excerpt from chapter 1 of The Scarlet Letter, the meaning of the inauspicious portal is unfavorable or ill bonding.

The meaning of the inauspicious doorway is unfavorable or bonding  ill, according to this excerpt from Chapter 1 of The Scarlet Letter."Inauspicious" means "unfavorable" or "foretelling ill," hence option e is correct.

The Scarlet Letter is a romantic historical fiction novel written by Nathaniel Hawthorne and published in 1850.

It is frequently used to describe events or circumstances that appear to portend disaster. The word "inauspicious" is used to define the "portal" from which the story is going to emerge in the line you supplied. This means that the narrative will not be cheerful or successful.

Thus, option e is correct.

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Answer:

b. The ventricles are in diastole.

Explanation:

Atrial systole is the phase of the cardiac cycle that lasts for about 0.1 sec. During this phase, the atria are contracting. At the same time, the ventricles are relaxed or are in diastole. The pressure of the contraction of atria forces the blood to open the AV valves. The blood enters the ventricles through the open AV valves. During this phase, the semilunar valves are closed as the blood pressure in ventricles is very low. The P wave of ECG represents the atrial systole. This is followed by the systole of ventricles.

When the atria contract (atrial systole), the ventricles are in a relaxation phase known as diastole. During this phase, the atrioventricular valves are open to allow blood to flow from the atria to the ventricles, while the semilunar valves are closed to prevent backflow from the arteries.

When the atria contract, a phase known as atrial systole, the correct statement from the options given is: b. The ventricles are in diastole. During atrial systole, the atria contract which pushes blood into the ventricles. At this time, the ventricles are in a phase known as diastole, meaning they are relaxed and ready to receive blood.

The atrioventricular valves (AV valves) are open during this phase to facilitate the flow of blood from the atria to the ventricles. So, option a. 'The AV valves are closed' is not correct. The semilunar valves are closed, not open, during atrial systole to prevent backflow of blood from the arteries to the ventricles, hence, d. 'The semilunar valves are open' is not correct.

Option c. 'The atria are in diastole' is also not correct as during atrial systole, by definition, the atria are contracting, not in diastole.

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The question is incorrect as it does not have the option which are:

a) early adulthood

b) middle adulthood

c) late adulthood

d) central adulthood

Answer:

B) middle adulthood

Explanation:

Ageing refers to the accumulation of natural physical, social and psychological changes in human beings.

The signs of the ageing like the wrinkles, the gain of the weight, growth of grey hairs, loss of hearing, arthritis and other disorders start appearing in the middle age or the age between 40 to 65 years.

Since the physical changes take place during the 40 to 65 years which is considered the middle adulthood, therefore, B is the correct answer.

Thus, Option-B is the correct.

Answer:

The shape of the larynx in infants are cone shaped.

Explanation:

The size of the larynx is small in comparison to the adult one.

The larynx lies on the 4th cervical vertebrae and the axis of the respiratory system is parallel with the axis of digestive system that helps the infants to breathe constantly and swallow liquid foods.

The larynx is covered by soft cartilage and relatively the lumen is narrow.

The vocal cord is small and 7-9 mm wide with sub glottis which is 5.5-6 mm wide.

Soft cartilage favors deformity of the larynx and trachea.

The upper end is cone shaped structure and the cricoid cartilage is backwardly directed. Short vocal cord and the epiglottis is narrow which is hang above the larynx.

The cricoid cartilage is hyaline type in infants that affects the coloring intensity.

The epiglottis is an elastic cartilage which is covered by mucus.

The correct answer is a. funnel. The larynx in infants is funnel-shaped, situated higher in the neck to aid in breathing and prevent choking. This shape gradually changes as the child grows.

The larynx in infants is described as a. funnel-shaped due to the anatomical differences compared to adults.

Complete question:

A group of nursing students are reviewing information about variations in the anatomy of a child's respiratory tract structures in comparison to adults. The students demonstrate an understanding of the information when they describe the shape of the larynx in infants as?

a. funnel.

b. cylindrical.

c. oval.

d. spherical.

Answer:

DRUGS!!!!!!!

Explanation:

are not good

Answer:

No, drug-susceptible cells and drug-resistant cells are equally likely to infect a new host.

Answer:  living things maintain homeostasis, meaning keeping conditions inside the body stable. ... Viruses have no way to control their internal environment and they do not maintain their own homeostasis.

Explanation:

living things maintain homeostasis, meaning keeping conditions inside the body stable. ... Viruses have no way to control their internal environment and they do not maintain their own homeostasis.

Answer:

Organism having the suitable traits appears more in the population.

Explanation:

Natural selection is a non-random process in the biological traits becomes less or more common in the population due to the different rate of survival of their bearer or their differential reproduction.  

Natural selection leads to evolution because those organisms are selected to survive and reproduce which are having those traits that are better suited to a certain set of environmental conditions over others. As a result, the number of these organisms increases over time and they appear more in the population.

So natural selection leads to evolution as an organism having the suitable traits appears more in the population.

Answer:

Clinical manifestation of systemic inflammatory response syndrome (SIRS) on respiratory system :

Tachypnea ( Respiratory rate above 20 per minute associated with PaCO2 below 32 mm/Hg ).

Clinical manifestation of multiple organ dysfunction syndrome (MODS) on the respiratory system :

1) Dyspnea

2) Increased respiratory rate

3) Alveolar edema

4) Decrease in surfactant

5) Deceased compliance

6) Pulmonary hypertension

7) Hypoxemia

8) V/Q mismatch

9) Increase in shunt.

Answer:

The correct answer is: Social Comparison.

Explanation:

The four postulates of natural selection are individuals in a population vary in the traits they possess, some trait differences are heritable, individuals with certain traits are more likely to survive and reproduce, and survival and reproductive success are variable among individuals in a population.

The four postulates of natural selection are:

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The four postulates of natural selection are: Individuals in a population vary in traits, some trait differences are heritable, certain traits increase likelihood of survival and reproduction, and survival and reproductive success vary among individuals.

The four postulates of natural selection are:

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Answer:

The answer is D

Explanation:

Logical positivism is equated to neopositivism; it is a philosophical approach based on the verification principle. The verification principle is a principle of knowledge established on the facts that only statements verifiable through direct observation or logical proofs are acceptable and meaningful.

Answer:d

Explanation:

Answer:

The correct answer is: The genotype is Bb because of incomplete dominance.

Explanation:

                                                                B

                                                       b      Bb

Answer:

All of the above.

Explanation:

PI(4,5)P2 (Phosphatidylinositol 4,5-bisphosphate) is the phospholipid present in the minor amount in the plasma membrane. This molecule plays an important role in the cell signaling.

The PI(4,5)P2 is involved in the clathrin coated vesicles and its depletion leads to the uncoating and continues the cell signaling process. The dynamin protein is important for the clathrin coating and and they require the adaptor protein AP2 for the clathrin association.

Thus, the correct answer is option (d).

The CRISPR-Cas9 system, an adaptive immune system in prokaryotes, activates CRISPR arrays and Cas proteins to defend against viral invasion. CRISPR arrays store viral DNA segments that guide Cas proteins to target and cleave the viral genome, providing acquired immunity.

The CRISPR-Cas9 system is an adaptive immune mechanism found in prokaryotes like bacteria and archaea, which activates upon viral invasion. When a virus invades a bacterium, two main components are mobilized for the bacterium's defense: the CRISPR array and the Cas proteins. The CRISPR array serves as a genetic memory of past infections by incorporating segments of viral DNA into its sequence. These segments, known as spacer DNA, are transcribed into RNA molecules that guide the Cas proteins. The Cas proteins, especially Cas9 in the CRISPR-Cas9 variant, are enzymes that use the RNA guide to identify and cleave complementary sequences in the invading viral DNA, thereby neutralizing the threat.

This system provides bacteria with a form of acquired immunity by allowing them to "remember" past infections and respond more effectively to repeated attacks by the same virus. The RNA molecules, transcribed from the CRISPR array, target the Cas proteins to the precise location in the viral genome that matches their sequence, resulting in the destruction of the viral DNA. This process exemplifies nature's own method of genetic editing, which has been harnessed by scientists for various applications in gene editing and biotechnology.

Answer:

Inflammation is the body response for protection against harmful things such as toxins, injuries and infection etc.

Explanation:

Inflammation can be either local or systemic.

Local; Invlove local area.

Systemic; Not restricted to particular tissue Invlove endotheliam and other organ. Its symptoms includes;

Answer:True

Explanation:

Mitosis is just a part of a cell cycle. Mitotic M phase include both mitosis and cytokinesis.

In the cell cycle Mitotic cell division alternate with Interphase a growth phase. In the mitotic phase, mitosis divides the cell nucleus and distribute it's chromosomes to the daughter nuclei, cytokinesis divides the cytoplasm, producing two daughter cells.

During mitosis in the telophase stage of mitosis the division of one nucleus into two genetically identical nuclei, is completed.

In Cytokinesis, the division of the cytoplasm is usually well under way by the late telophase, so the two daughter cells appear shortly after the end of mitosis

Final answer:

True. The statement is correct; cytokinesis is the division of the cytoplasm, while mitosis is the division of the nucleus, leading to two identical daughter cells.

Explanation:

The statement is true: cytokinesis is the division of the cytoplasm, and mitosis is the division of the nucleus. Cell division consists of these two processes. During mitosis, the cell's nucleus divides to form two identical nuclei. Following mitosis is cytokinesis, where the cell's cytoplasm divides, leading to the formation of two daughter cells, each containing a complete set of genetic material. It is important to note that whilst the phases of mitosis are consistent across most eukaryotic cells, the process of cytokinesis can vary, particularly in cells with cell walls, such as plant cells.

Answer:

The trait may be defined as the particular characteristics of the organisms. The beneficial trait can be pass down from parents to their offspring and further in the next generation.

The individual acquire some trait depending on the external environment. The traits that are required in contemporary environment and can be inherited from the parents is ideal body size to cover the long distances. The individual appetites to consume large amount of calories that helps the individual to survive in the food shortage condition.

Answer:

Let's complete The question

Drag each item to the appropriate bin. If the item is not an input to or an output from the light reactions, drag it to the "not input or output" bin. (light, water, NADP+, ADP, O2, ATP, NADPH, glucose, CO2,G3P

Input:

light, water, NADP+, ADP

Output:

O2, ATP, NADPH

not input or output:

glucose, CO2,G3P

Explanation:

At the light reactions phrase, the energy of sunlight is employed in the oxidation of water (the electron donor) to O2 and transfer these electrons to NADP+, so as to give NADPH.

Some light energy is also employed to transform ADP to ATP.

The NADPH and ATP yielded are consequently used to run the sugar-producing Calvin cycle.

If one compares the base sequences of related genes from different species, one is likely to find that corresponding exons   are usually conserved, but the sequences of   introns   are much less well conserved.

Explanation:

A gene consists of two parts called the exons and introns.

Exons code for the gene products while introns lie between two consecutive exons and do not code for any gene product.

Exons are highly conserved within a species while introns are less conserved and help in diversifying individuals within same species.

Introns are spliced of during the mRNA processing to give rise to a mature mRNA that will code for a protein.

Exons are usually conserved, while introns are much less well conserved when comparing the base sequences of related genes from different species.

When comparing the base sequences of related genes from different species, one is likely to find that corresponding exons are usually conserved, but the sequences of introns are much less well conserved.

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Answer:

E

Explanation:

A protein is made and inserted into the membrane of the rough endoplasmic reticulum. A binding site that is present in this protein is aligned so that it faces the lumen of the ER. If this protein is then moved to other endomembranes, the binding site is unlikely to be found at the cytosolic face of the plasma membrane whose main function is to protect the cell from its surroundings.

Answer:

The correct answer is- vitamin D

Explanation:

Vitamin D is a fat-soluble vitamin that is produced in the skin due to the exposure of UV radiation on the skin. When the UV radiation penetrates the skin the provitamin D3 is converted into previtamin D3. Then this previtamin D3 gets isomerize to vitamin D3 which is natural form of the vitamin D.

This vitamin D is important for normal bone growth and its function. Vitamin D helps our bone to become strong by helping bone to absorb calcium from the food. It protects osteoporosis in older adults. Therefore the correct answer is vitamin D.

Vitamin D is a fat soluble substance, created in the skin when exposed to UV radiation. This vitamin is essential for absorption of calcium and phosphate, contributing to normal bone growth and function.

The substance that is fat soluble, produced in the skin on exposure to UV radiation, and necessary for normal bone growth and function is Vitamin D. When UV radiation from the sun comes into contact with our skin, it triggers the synthesis of Vitamin D. It is essential in ensuring our bodies can absorb calcium and phosphate, crucial elements needed for bone health. Insufficient levels of Vitamin D can lead to skeletal disorders such as rickets in children and osteomalacia in adults.

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Answer:

4. cortisol growth hormone

Explanation:

It is possible to supply Johanna with the growth hormone because the deficiency in this hormone has been the cause of her short stature. This hormone is important because it is produced by the pituitary gland that is in the brain and is responsible for increasing height and muscle mass. There are medications that contain this hormone, it is recommended to apply at an early age and that has more risks of success

Answer:

1. Essential Amino Acids: are those amino acids that can’t be synthesized by the body and must be taken from some outside source. For example Histidine. It has a carboxylic acid group and an imidazole side chain. It can be found in protein histamine where it is a radical histidyl precursor.

2. Non-essential Amino Acids: are those that our body can easy synthesize mostly by Glucose metabolism. For example, Glutamic acid that is found in most protein structures of excitatory neurotransmitters.

3. Conditional Amino Acids: are non-essential except at times of need for example ornithine. It can be found in the processing of Urea cycle.

Answer:

Through formation of zygote by using gene pool of two gametes

Explanation:

During fertilization, an offspring is produced from the gametes of parents. Due to independent assortment and recombination, each gamete has unique combination of gene because of the meiosis cell division. This leads to reshuffling of genes of the mating parents and thus causes genetic variation in a given population. This is the reason why offspring of the same parents differ from each other phenotypically. A zygote is formed when the gamete of the two mating parents combine.

Fertilization is the process of combining two gametes to form a zygote.  The gametes fertilize to produce different phenotypic characters in the offspring.

Recombination:

It is a process of creating a new combination of genes in the gametes. During the miosis (I) the non-sister chromatids of homologous chromosomes exchange the genetic material. This results in the different genetic combinations in each gamete.

A gamete fertilizes to form a zygote and develop into offspring. The offspring will produce different traits according to the genes they have.

Therefore, gametes fertilize to produce different phenotypic characters in the offspring.

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Answer:

Some essential minerals are taken into the symplast by active transport

Explanation:

The soil solution contains minerals and water. The water gets absorbed by the roots via the process of passive transport called osmosis through aquaporins but the ions are unable to pass through the passive transport and require energy in the form of ATP and thus is known as active transport.

As the absorption of the mineral is an active process, therefore, minerals are absorbed against their concentration gradient and as a result, the minerals can be accumulated in the roots in much higher concentration than the soil solution.

Thus, the selected option is the correct answer.

Essential minerals are concentrated in the vascular cylinder of roots through active transport into the symplast and regulatory control at the Casparian strip, facilitating their eventual distribution by the xylem.

The most accurate explanation for why concentrations of essential minerals are much higher in the vascular cylinder of roots than in the soil solution is that some essential minerals are actively taken into the symplast by active transport. Plants possess specialized mechanisms to absorb these minerals against their concentration gradient, which shows the remarkable ability of plants to take up minerals such as potassium (K+) from very low concentrations in the soil to much higher concentrations within the root cells. Notably, all water and minerals must pass through the Casparian strip within the endodermis, ensuring that uptake into the vascular cylinder is under tight regulatory control. This process prevents the backflow of water and solutes, thereby allowing the plant to efficiently manage the uptake and transport of essential minerals and water into the xylem for distribution throughout the plant.

Answer:

For example, a haploid human nucleus (i.e. sperm or egg) normally has 23 chromosomes (n=23), and a diploid human nucleus has 23 pairs of chromosomes (2n=46). A karyotype is the complete set of chromosomes of an individual.

Explanation:

In humans, the diploid chromosome number for a karyotype is 46, consisting of 23 pairs of chromosomes, including 22 pairs of autosomes and 1 pair of sex chromosomes.

In humans, the diploid chromosome number for a karyotype is 46. This means that each somatic cell in the human body has 46 chromosomes, arranged in 23 pairs. These pairs include 22 pairs of autosomes (non-sex chromosomes) and 1 pair of sex chromosomes.

In females, both sex chromosomes are X chromosomes, so their karyotype is written as 46,XX. In males, the sex chromosomes are one X chromosome and one Y chromosome, so their karyotype is written as 46,XY.

A karyotype is a picture of an individual's chromosomes, organized in homologous pairs. It can be used to study chromosomal aberrations, cellular function, taxonomic relationships, and medicine.

Answer:

The unique Supplemental Nutrition Program for Women, Infants, and Children (WIC) is a federal aid program of the Food and Nutrition Service (FNS) of the United States Department of Agriculture (USDA) which majors in providing healthcare and feeding of low-income pregnant women, breastfeeding women, and children below the age of five.

WIC combines with varying services that are important to childhood and family well-being. The primary eligibility prerequisite is a family income that is less than 185 percent of the federal poverty level.

WIC is known to serve around 53 percent of all infants giving birth to the United States.

Answer:

the answer to your question is nutritional risk

Explanation:

hope i spelt that right have a good one

Answer:Transcranial Magnetic Stimulation (TMS)

Explanation:

Transcranial magnetic stimulation also known as repetitive transcranial magnetic stimulation. TMS is a noninvasive procedure that uses magnetic fields to stimulate nerve cells in the brain to improve symptoms of depression. In TMS, brain cells are stimulated using a powerful magnetic field produced by a wire coil placed on a person's head that temporarily inactivates neural circuits. TMS devices operate completely outside of the body and affect central nervous system activity by applying powerful magnetic fields to specific areas of the brain that we know are involved in depression.