Researchers are monitoring the sequence in which blood flows to different regions of Theresa's brain while she solves simple arithmetic problems. They are most likely making use of: fMRI.
fMRI stands for Functional magnetic resonance imaging. It is used to measure the minute changes that occur in the flow of blood due to any brain activity. Thus, solving arithmetic problems is an activity that will cause the blood flow and hence can be detected by this technique.
Brain is the most complex organ of the body that controls different functions of the body. The brain has two hemispheres: the right and the left. The whole brain is divided as: forebrain, midbrain and hindbrain.
To know more about brain, here
brainly.com/question/29587762
#SPJ4
How To combine 2 DC power sources?
explain the effects on hunger and eating behavior when the appetite suppression areas of the hypothalamus are stimulated or destroyed.
The effects on hunger and eating behavior when the appetite suppression areas of the hypothalamus are stimulated or destroyed are either increase the appetite or loss appetite for eating.
The hypothalamus is a small part in the brain that lies just above the pituitary gland. Besides regulate body temperature, the hypothalamus acts as the control center for hunger, satiety, thirst. Within the hypothalamus, there are nerve cells that when activated, cause producing the sensation of hunger, satiety and thirsty.
The following are area in brain which responsible in it.
For example : let’s say you have not had breakfast yet. The empty stomach trigger your hunger. The receptors in stomach detect it and this stimulus is sent to the arcuate nucleus. The arcuate nucleus activates the feeding centre through orexigenic neurons and inhibit satiety centre.
Thus, if these area are destroyed, it causes loss appetite.
Learn more about orexigenic neurons at :
https://brainly.com/question/28097717
#SPJ4
Stimulating the appetite suppression areas of the hypothalamus causes animals to stop eating, while destroying these areas causes animals to overeat excessively (eat and eat).
The hypothalamus plays a crucial role in regulating hunger and eating behavior, and contains both appetite suppression and appetite stimulation areas. When the appetite suppression areas of the hypothalamus are stimulated, it leads to a decrease in hunger and food intake.
Conversely, when these areas are destroyed, it leads to overeating and an increase in body weight. This is because the appetite suppression areas normally work to signal feelings of fullness and satiety, so when they are damaged, this signaling system is disrupted and animals lose their ability to regulate their food intake.
Learn more about hypothalamus brainly.com/question/11352172
#SPJ4
The cell cycle is a series of events that occur in which order?
The four-stage cell cycle involves the cell growing (gap 1, or G1), replicating its DNA (synthesis, or S), getting ready to divide (gap 2, or G2), and dividing itself (gap 4, or S) (mitosis, or M, stage).
What steps make up the cell cycle?G1 phase, S phase, and G2 phase make up interphase, which is when cells are growing (cell growth).
The mitotic phase, which consists of mitosis and cytokinesis and yields two daughter cells, begins at the end of interphase.
DNA replication starts in the M phase of mitosis and ends in the S phase, also known as the synthesis phase.
learn more about cell cycle
https://brainly.com/question/7196669
#SPJ4
Why are transmembrane proteins able to span the hydrophobic portion of the bilayer?
Transmembrane proteins are able to span the hydrophobic portion of the bilayer because they contain hydrophobic amino acids that are compatible with the hydrophobic environment of the lipid bilayer.
The lipid bilayer is composed of two layers of phospholipids, with the hydrophobic fatty acid chains facing inward and the hydrophilic polar heads facing outward.
Because water is excluded from the hydrophobic interior of the bilayer, any protein that spans the bilayer must contain hydrophobic regions that can interact with the fatty acid chains of the lipids.
Transmembrane proteins contain a hydrophobic transmembrane region, typically composed of alpha-helices or beta-sheets, which is capable of spanning the lipid bilayer. This hydrophobic region is usually composed of nonpolar amino acids such as leucine, isoleucine, and valine.
To learn more about transmembrane proteins
https://brainly.com/question/14778523
#SPJ4
the phenomenon of multiple, overlapping action potentials gradually building muscle tension is called: group of answer choices summation tetanus twitch muscular power
Summation is the phenomenon of multiple, overlapping action potentials gradually building muscle tension. Here option A is the correct answer.
When multiple nerve impulses reach a muscle at the same time, they can cause the muscle to contract more strongly, leading to an increase in tension. This increase in tension is called summation, and it occurs when multiple nerve impulses are received by the muscle in a short period of time.
Tetanus, on the other hand, is a sustained contraction of a muscle that occurs when the muscle fibers are repeatedly stimulated by nerve impulses. Tetanus can occur when nerve impulses reach the muscle at a high frequency, causing the muscle to remain contracted for an extended period of time.
A twitch is a brief, single contraction of a muscle that occurs in response to a single nerve impulse. Twitches are typically too short-lived to cause significant movement, but they play an important role in the overall control of muscle contraction.
Complete question:
the phenomenon of multiple, overlapping action potentials gradually building muscle tension is called: group of answer choices
A - summation
B - tetanus
C - twitch
D - muscular power
To learn more about summation
https://brainly.com/question/29156854
#SPJ4
what are two cell types that secrete histamine, heparin, leukotrienes and kinins, thus inducing the inflammatory response?
Mast Cells and basophils are the two types of cells which are responsible for the secretion of heparin, histamine, leukotrienes and kinins and therefore inducing the inflammatory response.
Mast cells are a type of immune cell which happen to release histamine as well as other hormones in response to a certain stimuli. Mast cells can be found in a number of places throughout the body but they especially abundant in the skin, lung airways, as well as the digestive tract.
Basophils are basically a type of white blood cell which work with our immune system to help defend our body against allergens, pathogens as well as parasites. Mast cells and basophils release heparin, histamine, leukotrienes and kinins upon degranulation and help induce immune response in our body.
To know more about mast cells here
https://brainly.com/question/29468732
#SPJ4
The Watch Window can be used to monitor the value in one or more cells. true or false
It is true to say that the value in one or more cells can be kept track of using The Watch Window. The Watch Window makes it simple to check, verify, or audit formula results in extensive workbooks.
You can avoid frequently scrolling or moving to various worksheet locations by using the Watch Window. Like any other toolbar, this one may be dragged and docked. The Watch Window provides a single pane from which you may monitor cells on various sheets and books.
It allows you to inspect, audit, or confirm formula calculations and results in big worksheets as well as check the values and formulas in cells that are hidden from view in the active worksheet.
Learn more about Watch Window Visit: brainly.com/question/15843801
#SPJ4
the molecules that are acted on by an enzyme are called
red-green color blindness is a recessive trait on the x chromosome. two people with normal color vision have two sons, one color-blind and one with normal color vision. what proportion of their daughters will have normal vision?
25% of their daughters are expected to have normal color vision, while the other 75% are expected to be carriers of the color blindness gene.
Red-green color blindness is a genetic condition caused by a mutation in a gene located on the X chromosome. The gene responsible for normal color vision is dominant, while the gene responsible for color blindness is recessive.
If two people with normal color vision have two sons, one color-blind and one with normal color vision, it is likely that the parents are carriers of the color blindness gene. This means that they each have one normal X chromosome and one X chromosome carrying the color blindness gene.
When the parents have children, they each pass on one X chromosome to their offspring. The probability of passing on the normal X chromosome is 50%, while the probability of passing on the X chromosome carrying the color blindness gene is also 50%.
For their daughters, the probability of having normal color vision is:
(normal X from mother) * (normal X from father) = 0.5 * 0.5 = 0.25.
To learn more about color blindness
https://brainly.com/question/29807811
#SPJ4
Match the parts of the kelp plant to the given structure.
Note that the labeled structures of the Kelp Plant is attached accordingly.
What is Kelp?Kelp is a big brown algae that lives in chilly, shallow waters near the beach. They form thick clusters, much like a forest on earth. Thousands of fish, invertebrates, and marine mammal species rely on these underwater kelp towers for food and refuge.
Marine kelp is a popular sea plant due to its numerous health advantages and high nutritional content, however it is not the same as seaweed. Seaweed is a name that can refer to a variety of marine-based plant and algae species. However, marine kelp is more particular. It refers to the most extensive subgroup of seaweed.
Learn more about Kelp:
https://brainly.com/question/26833819
#SPJ1
Condensation of chromosomes is initiated in the __________ phase of interphase and continues until the end of prophase.
Condensation of chromatin occurs during the prophase stage. In meiotic cell division, the mother cell divides twice after one round of replication.
As eukaryotic cells enter mitosis or meiosis, chromosomes condense and become visible under light microscopy. During interphase (G1 + S + G2), chromosomes are fully or partially decondensed into chromatin (DNA wound around histone proteins) (nucleosomes).
During prophase, the nucleus's complex of DNA and proteins, known as chromatin, condenses. The chromatin coils and compacts, resulting in the formation of visible chromosomes.
Learn more about prophase
https://brainly.com/question/13883655
#SPJ4
Buffalo grass is a species of plant found on the grazing prairie of Wyoming. It is a tough grass that has silicates (compounds containing oxygen and silicon) that reinforce its leaves. This variation has allowed this type of grass to survive for many years in a harsh environment.
a. This is an example of which mechanism?
b. Explain why
Buffalo grass is tough due to the presence of silicates which reinforces the leaves of this plant and allows it to survive in harsh environment and this a classic example of adaptation.
Buffalo grass is basically a grass which is perennial to western North American. Buffalo grass is found in the short-grass as well as the mixed-grass prairies and is a very important year-round forage grass.
It is a very tough grass and this property of buffalo grass can be attributes to the presence of silicates, which are basically compounds that contain oxygen as well as silicon, in its leaves. This particular adaptation has allowed this grass to be drought resistant and survive for a lot of years in a very harsh environment.
To know more about adaptation here
https://brainly.com/question/30125115
#SPJ4
throughout the fossil record, we find animals that are not related to each other that adopt the same features or body plans because they work well for the habitats in which these animals live. this is a feature of evolutionary:
This is a feature of evolutionary convergence, which is when unrelated species evolve similar traits to adapt to their environment.
What is adapt?Adapt is an open source software platform that enables developers to quickly build, deploy, and manage applications based on microservices architecture. It provides an integrated development environment that allows developers to create new applications using pre-built components, and to manage and monitor existing applications.
These adaptations are a result of natural selection, where organisms with beneficial traits have a better chance of survival and passing on their genes. For example, both dolphins and sharks have adapted to aquatic life, even though they are not closely related. They have both evolved streamlined bodies and fins to help them swim efficiently.
To learn more about adapt
https://brainly.com/question/8775027
#SPJ4
many seed plants can reproduce sexually or asexually. in what ways does sexual reproduction benefit a seed plant over asexual reproduction?
Many seed plants can reproduce sexually or asexually therefore the ways in which sexual reproduction benefit a seed plant over asexual reproduction include the following:
Seeds make it possible to disperse offspring to locations that are distant from the parent plant.Genetic diversity reduces the risk of local extinction should environmental conditions change.What is Sexual reproduction?This is referred to as the production of new living organisms by combining genetic information from two individuals of different types (sexes).
It leads to diversity because of the combination of traits from both parents and reduces the risk if local extinction in the ecosystem.
Read more about Sexual reproduction here https://brainly.com/question/815744
#SPJ1
The percent of the total available power currently being used by west fremont is nearest to: __________
At present, West Fremont utilizes around 15% of the all-out power accessible.
This bewildering pace of energy use utilizes promptly accessible assets. It is guessed that 10,000 BTUs of energy will create 12,000,000 kilowatt-hours (12,000,000 kWh) of force each day.
Coal, combustible gas, sun-situated energy, and wind are anticipated to be the fundamental energy sources in West FremontIn light of the outrageous energy investment funds, West Fremont's energy utilization is bizarrely high.
Every one of these sources enjoys benefits and weaknesses, and West Fremont will in all likelihood join each of the four to fulfill its energy needs.
Learn more about West Fremont:
https://brainly.com/question/29344921
#SPJ4
Identify a difference between the covalent bonds within a water molecule and the hydrogen bonds that form between different water molecules
A difference between the covalent bonds within a water molecule and the hydrogen bonds that form between different water molecules is hydrogen bonds are weaker bonds than covalent bonds.
A covalent bond is a bond formed by the sharing of an electron pair between two atoms. This bond in water occurs when the bond between the O atom and two H atoms in the molecule. This gathering of atoms has a high stability. This is why covalent bonds are stronger than hydrogen bonds.
Hydrogen bonds are bonds that form between molecules that are highly polar and contain hydrogen atoms. This bond occurs when a molecule having N, O, or F atoms has a lone pair of electron pairs which then other molecules will bond with that lone pair of electrons. When a water molecule forms a hydrogen bond with the negative end of one molecule attracting the positive end of another molecule. So the difference between the hydrogen bonds that form in water molecules has a weaker bond than covalent bonds.
Learn more covalent bond at:
https://brainly.com/question/3447218
#SPJ4
the vessel central to the four chambers of the heart on axial ct images is the a. ivc. b. pulmonary trunk. c. ascending aorta. d. svc.
The vessel central to the four chambers of the heart on axial ct images is the c)ascending aorta.So,correct option is c.
The ascending aorta (AAo)[1] is a piece of the aorta starting at the upper piece of the foundation of the left ventricle, on a level with the lower boundary of the third costal ligament behind the left 50% of the sternum.
It passes diagonally vertically, forward, and to one side, toward the heart's pivot, as high as the upper boundary of the second right costal ligament, depicting a slight bend in its course, and being arranged, around 6 centimeters (2.4 in) behind the back surface of the sternum. The absolute length is around 5 centimeters (2.0 in).
The aortic root is the piece of the aorta starting at the aortic annulus and reaching out to the sinotubular intersection. It is once in a while viewed as a piece of the climbing aorta,[2] and at times viewed as a different substance from the remainder of the rising aorta.[3]
Between every commissure of the aortic valve and inverse the cusps of the aortic valve, three little dilatations called the aortic sinuses.The sinotubular intersection is the point in the climbing aorta where the aortic sinuses end and the aorta turns into a cylindrical design.
Hence,correct option is c.
To know more about ascending aorta,visit here:
https://brainly.com/question/7305224
#SPJ4
ased on your knowledge of other biological macromolecules, what are reasonable assumptions about your macromolecule?
Based on your knowledge of other biological macromolecules, the reasonable assumptions about your macromolecule are:
It contains carbon-carbon bondsIts cellular synthesis is directed by enzymesHence, the correct answer is C and D.
A macromolecule, such as a protein or nucleic acid, is a very big molecule crucial to biophysical processes. It is made up of many atoms that are covalently bound. The smaller molecules known as monomers are the building blocks of many macromolecules. Large non-polymeric molecules like lipids, nanogels, and macrocycles, as well as biopolymers (proteins, carbohydrates, and nucleic acids), are the most prevalent macromolecules in biochemistry. In addition to synthetic fibers, macromolecules can also be found in research materials like carbon nanotubes. Hermann Staudinger, a Nobel laureate, first mentioned high molecular compounds in his first pertinent paper on this subject in the 1920s, but he later added "molecule" to the end of the term to create macromolecule (in excess of 1,000 atoms).
To know more about macromolecules here:
https://brainly.com/question/5246898
#SPJ4
Based on your knowledge of other biological macromolecules, what are reasonable assumptions about your macromolecule?
Choose one or more:
A. It is synthesized via hydrolysis of monomers.
B. Monomers in the molecule are connected to each other via hydrogen bonds.
C. It contains carbon-carbon bonds.
D. Its cellular synthesis is directed by enzymes.
What is one characteristic of Venus?
OA. It has the densest atmosphere of the terrestrial planets.
B. It has very short days, because it rotates on its axis very quickly.
C. It has the largest temperature variation of the terrestrial planets.
D. It has no tectonic activity because of its solid core.
Answer: One of the strange characteristics of Venus is that it’s actually rotating backwards from the rest of the planets. Seen from above, all of the planets rotate counter-clockwise, but Venus turns clockwise on its axis. Even stranger, a day on Venus lasts 243 days, which is longer its year. Venus has a thick, toxic atmosphere filled with carbon dioxide and it's perpetually shrouded in thick, yellowish clouds of sulfuric acid that trap heat, causing a runaway greenhouse effect. It's the hottest planet in our solar system, even though Mercury is closer to the Sun.
Explanation:
What are two purposes for classifying organisms
in a linnaean taxonomic scheme, closely related genera are placed in a larger grouping called the .
A larger grouping called the family is used to classify closely related genera in a Linnaean taxonomic system.
What do we mean by linnaean taxonomic scheme?A broad term for organism classification based on ranking. In other words, taxonomy in the scientific sense of rank-based classification. This phrase is used to contrast the cladistic systematics classification of organisms into clades. The Linnaean system is built on similarities in outward physical characteristics. This system is comprised of a taxonomic hierarchy ranging from the kingdom to the species level. Each species has a distinct two-word Latin name. The kingdom is a smaller taxon than the domain, which was recently added and is a larger taxon. Linnaeus' taxonomic classification scheme is made up of a hierarchy of taxonomic groups, or taxa. Taxonomic kingdoms and species are distinguished. The kingdom is the largest and most diverse confederation.
Learn more about scheme here: https://brainly.com/question/29433824
#SPJ4
. assume that a certain bacterial chromosome has one origin of replication. under some conditions of rapid cell division, replication could start from the origin before the preceding replication cycle is complete. how many replication forks would be present under those conditions?
Under such conditions, there would be six replication forks. The initial replication start would have two forks, and the duplicated origins (there are two) would now have two forks each, for a total of six.
The replication fork is a region where a cell's DNA double helix has been unwound and separated, allowing DNA polymerase and other related enzymes to use each strand as a template to synthesize a new double helix. produce.
A replication bubble has two replication forks. They serve as templates for replication, one leading strand and one lagging strand.
DNA consists of two long complementary strands with a backbone on the outside and nucleotides in the middle. The two strands of DNA split during replication. A replication fork is the resultant structure. The function of a replication fork is to synthesize DNA by unwinding double-stranded DNA by a DNA helicase in front of the polymerase, forming a replication fork containing two single-stranded templates. The replication process copies one DNA double helix into her two DNA helices, which split into daughter cells at mitosis.
For more information on replication forks, visit :
https://brainly.com/question/13543444
#SPJ4
The cortical reaction of sea urchin eggs functions directly in:__________
The cortical reaction of sea urchin eggs functions directly in the formation of a fertilization envelope.
The cortical response causes the egg glycocalyx or vitelline membrane to separate and rise from the egg surface. To generate the fertilization coat, the contents of the cortical granules interact with and modify the vitelline membrane via a hardening process.
Cortical granules are secretory vesicles positioned in the cortex of an egg that discharge their contents when stimulated by sperm contact during fertilization. These components alter the extracellular milieu, preventing more sperm from reaching the egg.
The cortical response is a calcium-dependent exocytotic mechanism that causes secretory granule content to be released into the perivitelline area shortly after fertilization, preventing polyspermy fertilization.
Learn more about cortical reaction
https://brainly.com/question/28303465
#SPJ4
where are cell bodies of lower motor neurons located? 1. the precentral gyrus 2. the anterior gray of the cord 3. in the nuclei of cranial nerves with somatic motor function 4. in the dorsal root ganglia
The cell bodies of lower motor neurons are located in : The anterior gray of the cord and In the nuclei of cranial nerves with somatic motor function.
The cell bodies of lower layer neurons are located in the anterior horn of the gray matter of the spinal cord and in the motor nuclei of cranial nerves in the brainstem.
Lower motor neurons have cell bodies in the spinal cord (anterior horn cells) and emerge from the spinal cord into nerves that supply spinal nerve roots and respiratory muscles.
The anterior gray column, also called the anterior horn of the spinal cord, consists of three types of neurons:
Large alpha motor neurons, middle gamma motor neurons, and small presumed interneurons. These neurons differ in both morphology and connectivity patterns.
Cranial nuclei are a set of bilateral gray matter motor and sensory nuclei located in the midbrain, pons, and medulla oblongata that represent the collection of many afferent and efferent cell bodies of cranial nerves. Near the midline are motor efferent nerves, such as the oculomotor nucleus, which control skeletal muscles. Right next to it is the autonomic (or visceral) efferent nucleus. There is a separation called the boundary sulcus, outside of which is the sensory nucleus.
For more information on lower motor neurons, visit :
https://brainly.com/question/29694659
#SPJ4
Complete question :
Where are cell bodies of lower motor neurons located?
1. The precentral gyrus
2. The anterior gray of the cord
3. In the nuclei of cranial nerves with somatic motor function
4. In the dorsal root ganglia
a. 4 only
b. 2 only
c. Cell bodies of lower motor neurons are located in 2 and 3.
d. 3 only
e. 1 only
the structures which are similar in their morphology, anatomy, and embryology but dissimilar in their functions are homologous organs. which of the following pair of organs is not homologous? a. forelimbs in humans and lizards b. forelimbs in lizards and frogs c. wings in butterfly and bat d. none of the above
Homologous organs are structures that are similar in their form and structure, but have different functions in different organisms.
This similarity is due to the fact that these structures have a common ancestry and have evolved from a similar structure in a common ancestor. A classic example of homologous organs are the forelimbs of humans, lizards, and frogs, which share similar bone structures but have different functions.
In the case of the pair of organs mentioned in the question, "forelimbs in humans and lizards" and "forelimbs in lizards and frogs" are homologous, while "wings in butterfly and bat" are not homologous. Wings in a butterfly and a bat serve the same function, i.e., flight, but their structures are not similar and do not share a common ancestry. Instead, wings in butterfly and bat are examples of analogous organs, which have similar functions but have evolved independently.
To know more about homologous organs click here:
brainly.com/question/14374730
#SPJ4
Explain the difference between the normal and mutated forms of hemoglobin.
Normal structure of hemoglobin is round and disk shaped. When mutated it becomes sickle shaped, rigid and sticky. Results in sickle cell anemia.
Hemoglobin is the cells in blood that carries oxygen to the cells. Its structure helps in easier transport through blood. It is round, plump and disc shaped and flexible. But mutated forms like sickled cells are sickle shaped, rigid and sticky. It is very difficult to get transported through blood.
Also due to the shape there is considerable difference in functioning of the cell. A sickled cell could carry less oxygen compared to normal hemoglobin and also loses oxygen molecules rapidly. Sickle cell anemia is a hereditary disorder.
So the main difference between normal hemoglobin and mutated forms is the structure.
For more information regarding hemoglobin and sickled cells, kindly refer
https://brainly.com/question/29482952
#SPJ4
What are typically or always heterotrophs?
All animals and fungi, as well as many protists and bacteria, are heterotrophs.
Heterotrophs are classified as herbivores, carnivores, omnivores, or decomposers based on what they eat. Heterotrophs include bacteria, fungi, yeast, cows, dogs, and humans. They are all dependent on plants and other animals for food.
All heterotrophs share a basic nutritional process. They use respiration to extract energy from nutrients after breaking down the glucose produced by autotrophs. Autotrophs are organisms that prepare their own food through photosynthesis, whereas heterotrophs cannot prepare their own food and must rely on autotrophs for nutrition."
Learn more about heterotrophs
https://brainly.com/question/11065112
#SPJ4
two tectonic plates pushing toward each other cause intense heat and pressure in earth’s crust. into which will crust material be changed by heat and pressure?
a. Fossil
b. Sediments
c. Metamorphic rock
d. Igneous rock
Answer:Metamorphic rock
Explanation:
Two tectonic plates pushing toward each other causes intense heat and pressure in Earth's crust. Into which will crust material be changed by heat and pressure? Metamorphic Rock.
mendel proposed a model to explain the results of a cross between pure-breeding lines. what are pure-breeding lines?
Pure-breeding lines refer to organisms or strains that consistently produce offspring with the same traits as the parent generation when interbred. They are true-breeding and will breed true for several generations.
Pure-breeding lines are strains or varieties of a species that have a uniform and consistent phenotype (appearance or expression of traits) that is passed down from generation to generation. This consistency is due to the fact that pure-breeding lines possess homozygous genes (having two identical copies of a particular gene) for the trait in question, which is expressed in the offspring.
In contrast, hybrid offspring, which result from the crossbreeding of two different pure-breeding lines, typically possess a combination of the traits from both parents and are heterozygous (having two different copies of a particular gene).
Key points:
Pure-breeding lines have a consistent phenotype.Pure-breeding lines have homozygous genes for the trait.Hybrid offspring possess a combination of traits from both parents.The concept of pure-breeding lines was introduced by Gregor Mendel.Learn more about pure-breeding lines here:
https://brainly.com/question/29348063
#SPJ4
Is thinking about the food that you eat in terms of breathing more helpful to you than thinking about it as Calories (energy). Why or why not?
Answer:
Foods high in energy but low in nutritional value provide empty calories. ... When thinking about calories, you should not be considering just your diet
Explanation: