Answer:
b excitatory neurotransmitter
Answer: D
Explanation:
i took the test
Why do plants have both chloroplasts and mitochondria but animals only have mitochondria?
The answer to the question is-
A plant requires sunshine, carbon dioxide (CO2), and water for photosynthesis to occur. The mitochondria then break down the sugar once it has been produced through photosynthesis to produce energy for the cell. Animals only need mitochondria, not chloroplasts, because they obtain their sugar from the food they eat.
What is mitochondria?Most eukaryotic organisms contain a mitochondrion, a double-membrane-bound organelle. Adenosine triphosphate (ATP), which is used as a source of chemical energy throughout the cell, is primarily produced by mitochondria using aerobic respiration.
In some multicellular organisms, certain cells lack mitochondria. Numerous unicellular organisms, including microsporidia, parabasalids, and diplomonads, have diminished or changed the structure of their mitochondria.
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What are the characteristics of white and gray rami in the sympathetic nervous system?
White rami are preganglionic sympathetic neurons from the T1-L2 spinal nerves. Gray rami are postganglionic sympathetic neurons that link to all spinal nerves. somatic nervous system features (SNS).
What makes up the nervous system?There are two primary sections of the nervous system: The brain and spinal cord make up the central nervous system. All of the body's parts are connected by nerves that emerge from the spinal cord and make up the peripheral nervous system.
What role does the nervous system play?The nervous system facilitates communication between all body parts. In addition, it responds to alterations both inside and outside the body. The nervous system transmits and receives information using both chemical and electrical methods.
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T who is at 41 weeks gestation is concerned when the primary care provider decides to induce labor. which reason does the nurse explain as the most important need for this procedure?
Risk for placental dysfunction.
The reason the nurse should explain as the most important need for this procedure is Risk for placental dysfunction.
The main goal of inducing labor in post-mature fetuses is to reduce problems caused by placental malfunction. The placental function declines with post-maturity, altering food and oxygen transport and raising the risk of hypoxia and hypoglycemia during the start of labor. The main justification for labor induction is this.What is placental dysfunction?A pregnancy problem known as placental dysfunction occurs when the placenta, which is responsible for supplying nutrients and oxygen to the baby' bloodstream, is unable to adequately nourish the growing fetus.Why does the placenta malfunction?If you smoke or use some types of illegal substances while you are pregnant, placental insufficiency may result. Your risk is further increased by medical disorders like diabetes, preeclampsia, and blood clotting issues.To learn more about inducing labor visit:
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In a given homologous chromosome pair, how many recombinant chromatids are generated by a single crossover event?
In a given homologous chromosome pair, two recombinant chromatids are generated by a single crossover event.
Homologous chromosomes are the chromosomes that possess the same genes at the same loci and also have the same structure. One chromosome of the homologous pair is paternal while the other is maternal. Crossing over even takes lace between homologous chromosomes only.
Crossing over is the event that involves the interchange of genetic material between homologous chromosomes. Due to this event, the offspring receives genes from both the parents. The exchange of genetic material occurs between two non-sister chromatids in crossover, hence two recombinants are obtained.
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carbon from glucose is essential for the formation of amino acids. which process is responsible for the production of glucose in plants?(1 point) citric acid cycle citric acid cycle dehydration synthesis dehydration synthesis photosynthesis photosynthesis glycolysis
Carbon from glucose is essential for the formation of amino acids the process which is responsible for the production of glucose in plants is photosynthesis.
Photosynthesis is the process by which plants or other organisms transforms light energy into chemical energy. During the process of photosynthesis, plants need three basic things to live: water, sunlight and carbon dioxide.
Photosynthesis is the process by which a plant produces its food using energy from sunlight, carbon dioxide from the air and water from the soil. The word photosynthesis can be separated to make two smaller words: ‘photo’ which means light ‘synthesis’ which means putting together
In this process, light energy from the Sun is absorbed by the green substance, called chlorophyll, present in leaves. This energy allows the production of glucose (food) by the reaction between carbon dioxide and water. Oxygen is also produced as a by-product.
Carbon dioxide + Water → Glucose + Oxygen
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What is one way that insects can indicate that an animal was killed by a hunter as opposed to disease or illness?.
Answer: it sticks to it
Explanation:
A muscle fiber will respond to a stimulus when that stimulus reaches the __________ level. recruitment resting rigor mortis threshold relaxation
When an external stimulus crosses the threshold, a muscle fibre will respond.
The level of the thresholdFor the identification of the electrical activity carried out by the active muscles, the threshold level is a crucial consideration. A portion of the electrical activity carried out by the target muscles may be excluded if the chosen threshold level is higher than the overall activity.What is the stimulus threshold for muscle contraction?A certain stimulus magnitude is necessary for muscle contraction. The threshold stimulus is the smallest amount of force needed for a stimulus to cause a muscle to contract in response.If the stimulus intensity is less than this threshold value, there is no response.learn more about threshold here
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Selective precipitation of a protein from a crude extract is most effective by which molecule?
Selective precipitation of a protein from a crude extract is most effective by ammonia sulfate.
Selective precipitation :A method of separating ions in an aqueous solution known as selective precipitation involves using a reagent that precipitates one or more of the ions while leaving the rest in solution. Metallic element qualitative analysis.
What is selective precipitation used for?Protein selective precipitation can be used to recover the majority of the proteins from a crude lysate in bulk form, to separate a group of proteins from a protein solution selectively, or to recover a particular protein of interest from a purification step extremely precisely.
What is precipitation method of separation?Precipitation is a method for separating a mixture according to how easily its constituent parts can be dissolved. A compound's solubility is influenced by the temperature, pH, and ionic strength of the solution. A chemical may become an insoluble solid and leave solution if certain parameters are changed.
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The process by which an endospore rehydrates and begins cellular metabolism is termed _____.
The process by which an endospore rehydrates and begins cellular metabolism is termed germination.
Endospore is the dormant form of asexual reproductive structure. It has a tough outer layer that is resistant to various unfavorable conditions, harmful chemicals, therefore protecting the inner contents. The endospore's tough layer breaks off only when the favorable conditions arrive.
Germination is the process where the dormancy of a seed or a spore breaks off and the enzymes present inside get activated. The outer protective payer of the endospore breaks off. After that the spore regains all its functionalities and the cell division begins.
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The molecular mass of propanoic acid is 74.1 amu . calculate the molecular mass of methyl ethanoate, an isomer of propanoic acid. express your answer with the appropriate units.
The structures of propanoic acid and methyl ethanoate are as follow below:
Formula Weight:74.07854
Formula Weight: methyl ethanoate
Molecular Formula: C3H2O2
They have same molecular formula C3H602; thus they are isomers and isomers have same molar mass also. Hence the molar mass of methyl ethanoate is 74.1 amu.
Are methyl ethanoate and propanoic acid isomers?An atom or group of atoms that gives the chemical its distinctive features is known as a functional group. For instance, the hydroxyl group is the functional group in ethanol (-OH). In contrast to its parent hydrocarbon, ethane, which is a gas and insoluble in water, ethanol is a liquid and soluble in water because of its functional group.
Compounds with distinct functional groups but the same chemical formula are known as functional group isomers. Methyl ethanoate and propanoic acid are functional group isomers.
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The invaginations of the mitochondria, which increase the surface area of the inner membrane, are called.
Answer:
Crista/Cristae
Explanation:
The name is from Latin.It gives the inner membrane it's wrinkled shape which provides huge space for chemical reactions to occur on.
Gemstones are commonly found in pegmatites, which are igneous rocks that are _____. group of answer choices
Gemstones are commonly found in pegmatites, which are igneous rocks that are exceptionally coarse grained.
Pegmatite are the igneous rocks which are crystalline in nature and are exceptionally coarse grained. It is composed of 33.6 percent albite, 30.4 percent quartz, 21 percent perthite and 14 percent muscovite.
They contain exceptionally large crystals and are also called as architectural stones.
Gemstones are pieces of mineral crystals which is cut and polished to form jewelry and other ornamental items.
Gemstones are commonly found in pegmatites like topaz, tourmaline, kunzite, blue aquamarine, pink morganite.
Pegmatite are mined for both gemstones and rare earth minerals.
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Hypothesis: if iodine is placed on sourdough bread then it will have an instant color change from ____________ to____________ indicating that ___________ is the major organic molecule in bread.
Iodine can instantly change the color of sourdough bread from white to blue-black, suggesting that starch is the main organic molecule in bread.
To check for starch in food, an iodine solution is employed. A bright orange-brown hue can be seen in a solution of potassium iodide (KI) and iodine (I2) in water. if starch-containing samples, such as bread, are included in the sample.
The bread's colour transforms into a rich blue.The starch and the iodine do exchange some electrical charges.The spacings between energy levels are altered as a result, changing the electron configurations. The complex gets its vivid blue colour from the additional spacings, which preferentially absorb visible light.Iodine is frequently used as an indication to check for starch. When starch reacts with the light orange-brown iodine solution, the colour changes to blue-black. This implies that the food item contains carbs.Learn more about Starch here:
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The digestive system codes include sites from the mouth to the anus, as well as the?
The most important organs that make up the digestive system (so as in their function) are the mouth, esophagus, stomach, small intestine, big intestine, rectum and anus.
Helping them alongside the manner are the pancreas, gall bladder and liver. Here's how those organs paintings collectively on your digestive system.The GI tract is a sequence of hole organs joined in a long, twisting tube from the mouth to the anus.
The hole organs that make up the GI tract are the mouth, esophagus, stomach, small intestine,large intestine, and anus. The liver, pancreas, and gallbladder are the stable organs of the digestive system.
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If the diploid body cells in a giraffe contain 30 chromosomes each, how many chromosomes would a giraffe sperm cell contain?
If the diploid body cells in a giraffe contain 30 chromosomes each, then 15 chromosomes would a giraffe sperm cell contain.
Sperm Cell/Gametes contains the "n" number of chromosome which equals to the half of the diploid cell/somatic cells.
[tex]n=\frac{number of chromosome}{2}[/tex]
Chromosome- A component that can be found in a cell's nucleus. Proteins and DNA are arranged into genes on a chromosome.
Gametes- A gamete is an animal or plant reproductive cell. Animals' male and female gametes are referred to as sperm and ova, respectively. Each ova and sperm cell has one copy of each chromosome, making them haploid cells. A sperm and an ovum combine during fertilization to create a fresh diploid creature.
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Which ig antibody is found abundantly is secretions but has very low circulating levels?
Answer:
IgA is an antibody that is present in great amounts in secretions but in extremely low amounts in plasma. A significant circulating antibody called IgG. IgE is often not found in secretions and its concentration in plasma varies. IgD is not produced and is present at low amounts in plasma.
After IgG, immunoglobulin A (IgA) is the second most prevalent antibody. Blood, lymphatic, as well as other bodily fluids including spit, tears, and even milk all include IgA. Additionally, the vaginal, pulmonary, and intestinal linings all contain it. To allow the newly produced IgA molecule to be released through epithelial cells lining numerous ducts and organs, 2 IgA molecules are bonded together and linked to a unique protein. Whereas IgG represents the most prevalent form of immunoglobulin, the human body produces more IgA compared to any other antibody upon a regular basis. IgA, though, is less stable than IgG, and as a result, it is always present in smaller proportions.
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What is one reason the presence of iridium leads scientists to hypothesize that a meteorite impact caused the mass extinction of dinosaurs?.
Iridium content in asteroids and comparable extraterrestrial entities is higher than that of the Earth's crust.
One reason the presence of iridium leads scientists to hypothesize that a meteorite impact caused the mass extinction of dinosaurs and Iridium content in asteroids and comparable extraterrestrial entities is higher than that of the Earth's crust.
Asteroids and other such extraterrestrial bodies have higher iridium contents than the Earth's crust, therefore the Alvarez team reasoned that the iridium layer must be made of the dust from the vaporized meteor. This led them to believe that an asteroid impact caused the extinction.What is one explanation for iridium's presence?The Earth's crust contains an extremely small layer of iridium. This is supposed to have been brought on by a big meteor or asteroid striking the planet. Iridium concentrations are higher in meteors and asteroids than in the crust of the Earth. The iridium would have been dispersed over the earth by the impact's massive dust cloud.To learn more about extinction of dinosaurs visit:
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The anatomy in the female genital system subsection starts with the vulva and progresses upward to the:_________
a. perineum
b. ovary
c. uterus
d. fallopian tube
The anatomy in the female reproductive system subsection starts with the vulva and progresses upward to the: perineum.
What is the Female reproductive system?The female reproductive system is made up of the bodily parts used for sex, both inside and outside, that are important for birthing.In order to produce gametes and bring a pregnancy to term, the female reproductive system in humans reaches maturity throughout puberty.The uterus, vagina, Fallopian tubes, and ovaries are the internal sex organs of a female who is born with an underdeveloped reproductive system.It is possible to give birth and engage in sexual activity thanks to the cervix, which joins the vagina and the uterus.In the uterus, which is also called the womb, the embryo develops into the foetus.Furthermore, the uterus secretes chemicals that help sperm travel to the Fallopian tubes, where they fertilise ova (egg cells) made by the ovaries.To learn more about female reproductive system, refer to the following link:
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The view that human development is multi-directional, multi-contextual, multi-cultural, multidisciplinary, and plastic is known as?
Baltes' lifespan perspective that development is lifelong, multidimensional, multidirectional, plastic, contextual, and multidisciplinary.
Many disciplines are capable of make a contribution critical ideas that combine knowledge, which can also additionally in the end bring about the formation of a brand new and enriched expertise of improvement throughout the lifespan.
Baltes is regarding the truth that a complicated interaction of things impact improvement throughout the lifespan, such as biological, cognitive, and socioemotional changes. Baltes argues that a dynamic interplay of those elements is what affects an individual’s improvement.
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It is possible for a patient to have gingivitis that is not caused by? bacterial plaque. gingivitis can be caused from an allergic reaction or fungal infection.
Both the above statements are true.
What is gingivitis?Gum inflammation is brought on by gingivitis, a non-destructive condition. Plaque-induced gingivitis, which results from bacterial biofilms (also known as plaque) that are attached to tooth surfaces, is the most prevalent type of gingivitis and the most prevalent type of periodontal disease overall. Plaque causes the majority of kinds of gingivitis.
While some occurrences of gingivitis never turn into periodontitis, gingivitis is always the first stage of periodontitis. Gingivitis is treatable with excellent oral care, but if left untreated, it can proceed to periodontitis, in which the gum inflammation causes tissue loss and bone loss surrounding the teeth.
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Question mode multiple choice question the ______ division of the autonomic nervous system is engaged when the body is relaxed.
The Parasympathetic Division of the autonomic nervous system is engaged when the body is relaxed.
What is parasympathetic nervous system?
One of the three components of the autonomic nervous system, together with the sympathetic and enteric nervous systems, is the parasympathetic nervous system (PANS or PSNS).
The enteric nervous system is occasionally regarded as a component of the autonomic nervous system and other times as a separate entity.
Known as downregulating, the parasympathetic nervous system has a function. The vagus nerve, which transmits signals from the brain to the body as well as back from the body to the brain, is primarily how it works.
When this system is working properly, it lowers your chance of developing coronary heart disease and stroke, improves gut health by increasing digestive metabolism, and lessens migraines. Additionally, it will improve your physical, emotional, and overall health, possibly even lengthening your life.
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The main energy source for the oxygen system during exercise of 2 hours of length would be?
Adenosine Triphosphate main energy source for the oxygen system during exercise of 2 hours of length would be. Adenosine triphosphate (ATP) is the cellular energy source. ATP is a nucleoside triphosphate composed of a nitrogenous base, a ribose sugar, and three serially linked phosphate groups. ATP is an energy-carrying chemical found in all living creatures' cells.
When food molecules are broken down, ATP Adenosine creates chemical energy and uses it to fuel other cellular processes. In the mitochondria of a cell, the process of cellular respiration also results in the production of ATP. Anaerobic respiration, which doesn't require oxygen, or aerobic respiration, which does, are both options for doing this.
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A hypothesis may be considered what?
Answer:
a tentative, testable explanation
Explanation:
Answer:
A hypothesis is a testable assumption/prediction that you make based on some basic evidence. It is the starting point for further investigation.
Explanation:
:D
A common technique that encourages partners to rebuild their sexual repertoire through a gradual progression from non-sexual touching to sexual contact is:____
A common technique that encourages partners to rebuild their sexual repertoire through a gradual progression from non-sexual touching to sexual contact is sensate focus. Sexual repertoire refers to the activities (both unpartnered and partnered) about which adolescents learn, gain experience, and make decisions.
A doctor can only detect if you're common sexually active if you're scheduled for a pelvic or rectal exam and have recently had a partner ejaculate inside of you during . Because sperm can live inside the body for up to 5 days, your doctor may notice it during your exam. with coitus as the sine qua non of sexual activity.
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Natural fibers, such as wool or cotton, will give a better protection when welding than synthetic fibers like polyester. True or false?.
Natural fibres will not give better protection during welding than synthetic fibres. So the statement is false.
What are synthetic fibres?Only the polymers contained in natural gas and petroleum byproducts are used to make synthetic fibres. Synthetic fibres are man-made fibres, and the majority of them are manufactured from petrochemicals, a byproduct of the processing of petroleum.
Fibers are the basis for all textiles, and they come from artificial or man-made sources. They have formed up either a tiny unit or a polymer that is constructed from several repeating monomeric building blocks. They consist of polypropylene, nylon, acrylics, and polyurethane. These fibres are manufactured in massive quantities annually all around the world.
Therefore, the statement is false.
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To help understand immunostimulant drug therapy, the client has come to the clinic for a class on thrombopoiesis. the nurse explains that the term means the formation of which types of blood cells?
Answer:
Глупый америкос , глупые вопросы задаёт , а мы русские все сами решить можем!
Explanation: Тупой америкос
Amphipathic phospholipids arrange themselves into a(n) ______ to form the plasma membrane multiple choice question.
Amphipathic phospholipids arrange themselves into a bilayer to form the plasma membrane
Amphipathic refers to holding property of both water affinity and it's phobia. Thus, amphipathic compound will have structure suitable for both. Same is the condition with lipids. Lipids have hydrophobic tail that are made up of fatty acids. They also have hydrophilic head which is phosphate group. It is polar in nature and hence easily interacts with water.
The two layers of lipid come together to form plasma membrane. Here, the hydrophilic head remains outside while the hydrophilic tails remain inside the bilayer. Both phosphate and fatty acids are attached to glycerol. Other carbohydrates may attach to lipids forming glycolipids, which play different significant roles in functioning of cell.
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Suppose that an equal amount of each polysaccharide was placed in a landfill. which polysaccharide should last the longest before it is decomposed?
Cellulose polysaccharide should last the longest before it is decomposed.
Cellulose polysaccharide- A molecule called cellulose is made up of hundreds, and occasionally even thousands, of carbon, hydrogen, and oxygen atoms. The primary component of plant cell walls, cellulose, keeps plants rigid and erect. Although cellulose cannot be digested by humans, it is essential for the diet as fiber.
Fiber- Fruits, vegetables, legumes, and whole grains all include fiber, which the body cannot process. Cancer prevention may be aided by dietary fiber. Fiber, such as muscle fiber or nerve fiber, is a term used to describe tissue that is formed of long, threadlike cells in the body.
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The restriction endonuclease ecori cleaves the dna sequence 5'-gaattc-3' in such a way as to leave a 5' overhang, which is often referred to as a "sticky end". to what does this sticky end adhere?
The restriction endonuclease EcoRI cleaves the DNA sequence 5'-GAATTC-3' in such a way as to leave a 5' overhang, which is often referred to as a "sticky end". To 5' overhang with the complementary sequence this sticky end adhere.
The palindrome EcoRI restriction site breaks DNA after G and creates sticky ends with AATT. G/corresponding AATTC's DNA sequence is CTTAA/G, where "/" designates the location of the peptide bond break.When the ssDNA sequence 5'-GAATTC'-3 is recognised by the restriction endonuclease EcoRI, a single-strand cut is made between the G and A nucleotides.At the ultimate end of double-stranded DNA, an overhang is single-stranded DNA. This can occur on either strand, and if it does, there will either be a 5' overhang on the 5' end of the strand or a 3' overhang on the 3' end of the strand.To learn more about DNA.
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What would be the efect on the properties of the water molecule if oxygen and hydrogen?
The effect on the properties of the water molecule if oxygen and hydrogen had equal electronegativity the water molecules would lack polarity, that results in no hydrogen bonding between water molecules.
What is electronegativity?The tendency to attract the shared electron by the atom is known as electronegativity. Atomic number impose affect on electronegativity of an element.
Groundwater is defined as water present in underground water below the soil as well as in crack of the earth. The percentage of freshwater in the world is 30%. There are mainly three types of groundwater and these are hand-dug wells, springs, and drilled boreholes.
The water stored under the ground are obtained from rain and stored in ground so that it can be used later. Ground water is very clean and fit for drinking and the reason is the soil present on top and work as filter and the groundwater is free from all microorganisms.
Therefore, the water molecules would lack polarity, that results in no hydrogen bonding between water molecules.
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