Answer: lateral hypothalamus
Explanation: A part of the hypothalamus involved in initiating, or “turning on,” eating. ventromedial hypothalamus: A part of the hypothalamus involved in regulating feelings of satiety. neurotransmitters and hormones are involved in regulating hunger and appetite.
genetic change in bacteria can be brought about by genetic change in bacteria can be brought about by transduction. conjugation. mutation. transformation. all of the answers are correct.
A mutation alters DNA by altering its base composition, whereas transduction involves the use of a bacteriophage to transport genetic material or DNA from one bacterial cell to another.
What is mutation?Mutation is defined as a change in the nucleic acid sequence of an organism's, virus's, or extrachromosomal DNA's genome.
It can also be defined as a change in the genetic material of a living organism's cell.
There are three types of DNA mutation.
Base substitutionInsertionDeletionThus, a mutation alters DNA by altering its base composition, whereas transduction involves the use of a bacteriophage to transport genetic material or DNA from one bacterial cell to another.
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A Seed-Bearing Starts Its Growth From?
A: An egg cell
B: A Sperm Cell
C: The Joining Of Egg And Sperm Cells
A Seed-Bearing Starts Its Growth From the process of fecundation which involves joining egg and sperm cell (Option C).
What is a seed?A seed is the beginning of life for the sporophytic generation in Angiosperm and Gymnosperm seed plants. In these plants, seeds are formed after fecundation from the pollen to the egg cell to form the zygote egg cell and the endosperm that nourishes the embryo during its development.
Therefore, with this information, we can conclude that seeds are formed through the process of fecundation and it involves the fusion of pollen with the egg cell.
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What characteristics of eukaryotic cell gives them greater capacity for specialization than prokaryotic cells?Explain your answer.
Answer:Eukaryotic cells are generally much larger than prokaryotic cells, frequently having a cell volume at least a thousandfold greater. The compartmentalization provided by cytoplasmic organelles is what allows eukaryotic cells to function efficiently.
Explanation:
What type of cell is illustrated here?
which of the following serves as the sensory relay center whose neurons project to both the amygdala and the higher cortical regions for further processing? question 3 options: 1) hippocampus 2) both the thalamus and the hippocampus 3) thalamus 4) hypothalamus
Sensory impulses from all across the body are sent to the cerebral cortex by the thalamus.
The thalamus receives sensory impulses from the body's surface and interprets them as sensations. Following that, the cerebral cortex processes the sensation and interprets it as touch, pain, or temperature.
The neurons in the thalamus, which functions as a sensory relay center, send signals to the amygdala and higher cortical areas for additional processing. Processing emotional information and transmitting it to cortical areas are both functions of the amygdala.
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if an adult hamster with a 24-hour endogenous rhythm receives a lesion to the scn and a subsequent scn transplant from a young hamster with an endogenous rhythm of 20 hours, which outcome occurs?
If an adult hamster with a 24-hour endogenous rhythm receives a lesion to the SCN and a subsequent SCN transplant from a young hamster with an endogenous rhythm of 20 hours, the adult hamster will adopt a 20-hour rhythm will occur.
What Exactly Is Exogenous Rhythm?Exogenous rhythm is the term used to describe environmental variables that affect natural circadian rhythm cycles over the course of a twenty-four-hour period. These variables include light exposure, temperature, ambient noise, regular diet, different time zones, traumatic events, injuries, and occupational stress. Light-sensitive cells in the retina, which are responsible for the body's biorhythms' response to light absorption, set off physiological cues that correspond to sleep/wake cycles. If these cues are out of sync, sleep patterns might be disrupted.
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What structural aspect of the dna facilitates dissociation of the two dna strands for replication?.
The structural aspect of the DNA facilitates the dissociation of the two DNA strands for replication Base pairs are connected via hydrogen bonds.
Bases and hydrogen bonds combine to produce the double helix structure of DNA. While C and G are joined by three hydrogen bonds, A and T are bound together by just two. Multiple hydrogen strands and the DNA helical structure work together to maintain the structure even though hydrogen bonds are noncovalent, weak connections.
Since hydrogen bonds are noncovalent and weak, enzyme activity during the development of the replication fork when DNA replication occurs can easily break them. In order to serve as the parent strand on which the new daughter DNA strands are created, two DNA strands must be separated throughout this process.
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what are similarities and differences between simple diffusion, facilitated and active transport? which requires energy and which does not? which process requires channel proteins for molecules to move through the plasma membrane?
The similarities and differences between simple diffusion, facilitated and active transport is:
Simple Diffusion:- It is the mechanism by which solutes are transported through a semipermeable membrane and down the gradient of concentration in a solution. In this phase of diffusion, where molecules migrate from a higher concentration to a lower concentration, the assistance of membrane proteins is not necessary. This process does not require any energy and channel proteins for molecules to move through the plasma membrane.
Facilitated Diffusion:- Diffusion that is facilitated occurs when molecules move passively across a cell membrane with the help of a membrane protein. Molecules that are unable to freely cross the phospholipid bilayer make use of it. this process also do not require energy.
Active transport:- Active transport is the transfer of dissolved molecules from a location of lower concentration to a region of higher concentration across the cell membrane. The particles use the energy released during respiration to move against the concentration gradient.
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What happens to this enzyme when the pH rises above 11?
Answer:
The enzyme activity decreases.
Explanation:
Enzyme activity is at its maximum value at the optimum pH. As the pH value is increased above or decreased below the optimum pH the enzyme activity decreases.
when the his- salmonella strain used in the ames test is exposed to substance x, no his revertants are seen. however, when rat liver enzymes are added to the cells along with substance x, his revertants do occur. rat liver enzymes alone cannot induce reversion. how can you explain this result?
The result of this experiment is well explained by the fact that substance X is a potential carcinogen that processes the substance and transforms them into other components along with rat liver enzymes.
What is the Ames test?The Ames test may be defined as a type of test that is significantly utilized in order to examine the capability of generating mutagens with the presence of a chemical or an enzyme.
According to the context of this question, the positive Ames test indicated that the chemical is mutagenic in nature and can function as a carcinogen. This is due to the fact that cancer is directly linked with the mutation.
Therefore, the explanation of the obtained result along with the definition of the Ames test is well described above.
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which of the following are referred to as mononuclear phagocytes? check all that apply.question 4 options:a) mast cellsb) eosinophils) basophils) macrophages) dendritic cellsf) monocytesg) lymphocytes
Dendritic cells and macrophages that are in close contact to the epididymal epithelium make up mononuclear phagocytes.
How were mononuclear phagocytes discovered?Through the use of various immune cell markers, these cells have been identified as epididymides from transgenic mouse models since their recent discovery. They encircle the epithelium's base and project long, narrow dendrites between epithelial cells in the direction of the lumen of the proximal epididymal areas. Dendritic cells can also be extracted from healthy human epididymides, with some subgroups significantly increasing in number under inflammatory circumstances. Although basal cells have characteristics similar to dendritic cells, these two groups exhibit different protein marker expression and are predicted to have different roles in the epididymis.
Dendritic cells and macrophages are referred to as mononuclear phagocytes
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In the nucleus of eukaryotic cells, all of the dna is divided into multiple , which are continuous, long strands of dna wrapped around proteins.
In the nucleus of eukaryotic cells, all of the DNA is divided into multiple chromosomes, which are continuous, long strands of DNA wrapped around proteins.
What are chromosomes?
The related proteins that give the connecting nucleic acid bases on a chromosome their shape are made up of a string of DNA. Since the chromosome is in a loose shape during the interphase of the cell cycle, proteins may be translated from the DNA and DNA can be duplicated. The chromosome condenses during mitosis and meiosis in order to be arranged and divided.
Chromatin is the material made up of all the chromosomes in a cell and all the proteins that are connected to them. Prokaryotes typically have a single chromosome that is arranged in a ring-like or linear pattern. Most eukaryotic species have many chromosomes in their chromatin, as will be discussed later in the article. A portion of the genetic code required to create an organism is carried on each chromosome.
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Using this phospholipid bilayer cross-section diagram as a reference, which letter best represents an integral protein that spans the membrane?
A
B
C
D
E
F
G
Integral proteins can be either monotypic or transmembrane. These last ones span the membrane and usually are channel proteins. In the image, protein G is the integral protein that spans the membrane.
What is an integral protein?
Plasmatic membranes are composed of lipids and proteins.
Among the proteins, we can find integral proteins and peripheric proteins.
Integral proteins are permanently associated with the membrane.
They accomplish many different functions such as substances transport, cellular receptors, and cellular adhesion, among others.
According to how they are incrusted in the lipidic bilayer, integral proteins might be,
Transmembrane proteins ⇒ span the entire membrane⇒ present in every membrane cells
⇒ usually channel proteins
Monotypic integral proteins ⇒ attached to only one of the lipidic layersIntegral proteins provide structure to the plasmatic membrane, but they do not maintain its strength.
In the image, only protein G seems to be integral and transmembrane. This is the only one that spans the entire membrane.
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The principle of ________ states that organisms succeed one another in a definite, determinable order that can be used to recognize a specific time period.
Can someone help me make a slideshow comparing all of the parts and functions of a plant cell to parts and functions of a zoo (cell membrane=gates of the zoo) for example im really struggling to finish this project
Answer:
One of the main and best known functions of plant organisms is that of photosynthesis, which distinguishes them from any animal or prokaryotic cell. Through photosynthesis, plant organisms are able to make their own food by using sunlight and water.
As cell division proceeds in multicellular organisms, the cells differentiate. What is the primary effect of cell differentiation on the organism?.
In multicellular organisms, cell differentiation occurs while cell division occurs. The fundamental impact of cell differentiation on the organism It permits the organism to enlarge itself.
The importance of cell differentiation in multicellular organisms?A multicellular creature needs differentiated cells because they can carry out specialized tasks for the body. Specialization, though, has a price. The trade-off is that differentiated cells frequently lose their capacity to proliferate.Environmental variables can also affect cell differentiation and gene expression. For instance, temperature, salinity, and the amount of available nutrients can all affect how an organism's genes are expressed.The Himalayan rabbit's genes that control fur color are activated and inactivated in response to temperature.To learn more about Cell differentiation refer to:
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what are Two identical strands of DNA that make up a chromosome?
Answer:
Chromatid
Explanation:
A chromatid is one of the two identical halves of a chromosome that has been replicated in preparation for cell division. The two “sister” chromatids are joined at a constricted region of the chromosome called the centromere.
since his cerebrovascular accident, a man has been denying his left hemiplegia. what term is used to describe this finding?since his cerebrovascular accident, a man has been denying his left hemiplegia. what term is used to describe this finding?
Anosognosia is the term for hemiplegia.
What is hemiplegia?Hemispatial neglect patients are a common source of anosognosia, a condition with a well-known example. This disorder, which affects attention and spatial awareness of the left side of space, is typically brought on by a stroke to the right parietal lobe. They frequently act as if there is no left side to the universe.
Anosognosia is the lack of awareness of or underestimating of a particular loss in motor, emotional, cognitive, sensory, or perceptual functioning as a result of a brain injury. The majority of stroke patients with hemiplegia who have this self-awareness impairment have been investigated; these patients may claim no deficiency, exaggerate their abilities, or deny that they are unable to move a paretic limb.
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What is the CO2 that is produced from cellular respiration used for? (Which process uses it?)
C[tex]O_{2}[/tex] produced is used for Photosynthesizing cells to form new carbohydrates.
During cellular respiration carbon dioxide is given off the waste product.
Photosynthesis makes the glucose that is used in the cellular respiration to make ATP. The glucose is then turned back into carbon dioxide which is used in photosynthesis. While water is broken down to form oxygen during photosynthesis in the cellular respiration oxygen is combined with hydrogen to form water.
Also in the process of cellular respiration oxygen gas serve as an acceptor of electron.
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Type your response in the box.
Think of an organism that you find interesting. Research the organism using credible websites. Then list one
structural, one behavioral, and one functional adaptation that the organism uses.
Answer:
Explanation:
я не знаю
Answer: The Cat, The cat has 230 bones and the most common cat behaviors include purring, grooming, kneading and climbing. The one functional adaptaton of the feline is its retractable claws, acute eyesight, and agility. Together, these adaptations enable cats to capture prey with great skill and efficiency. (My Answer)
Explanation: Edmentum Answer:
Black widow spiders have the ability to create and inject venom into their prey, which is a functional adaptation. The red hourglass marking on their body warns other organisms that they’re toxic, so this is a structural adaptation. These spiders spin and repair their webs. This action is a behavioral adaptation that helps them catch prey
Which type of cellular respiration is more efficient?
Answer:
Aerobic cell respiration is roughly 18 times more efficient than anaerobic cell respiration. Your cells require a lot of energy and are dependent on the high efficiency of aerobic respiration. They quickly die if deprived of oxygen.
What are reactants of the Light Dependent Reaction?
1. Carbon dioxide, NADPH, and ATP
2. Water, sunglight, NADP+, and ADP
The reactant of light dependent reactions are: (2) Water, sunlight, NADP+, and ADP.
The light dependent reaction is the one which depends upon the direct source of sunlight energy to make the products like ATP and NADPH. These are the sources of energy that are used in the dark reactions for the synthesis of glucose.
NADP+ is an electron carrier. The full form is Nicotinamide Adenine Dinucleotide Phosphate. It is an oxidized form while its reduced form is NADPH. It is the product of light reaction and is also an essential part in dark reaction for the synthesis of glucose.
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As part of an experimental procedure, an organ is removed from an animal. Which of the following would most likely be the result of this procedure? Responses The cells of the organ would begin to multiply. The cells of the organ would begin to multiply. The organism would not be affected. The organism would not be affected. The system from which the organ came would fail. The system from which the organ came would fail. The tissues in the organ would take on new functions .
If an organ is removed from a system, the system from which the organ is removed is bound to fail.
Level of organization of lifeLife is organized as cells, tissues, organs, and systems.
The basic unit of life is the cell. Above this is the tissue. Tissues are made from 2 or more cells that come together to perform similar functions.
Two or more tissues performing similar roles come together to form different organs. A system consists of different organs performing a common role.
Each organ in a system is a unit of production. It is a division of labor in a production process.
If an organ is not in place, the production process will halt.
Thus, the removal of an organ from a system will lead to the failure of the system from which the organ was removed.
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A neurologist is studying a patient who experienced brain damage and is suffering from odd emotional states. In this image, which part of the brain might the doctor especially study for damage? Question 13 options: 1 7 3 2
The part of the brain that the doctor might especially study for damage that occurred is the part labelled 1.
What is brain?The brain is part of the central nervous system that is made up of cells and tissues which helps in the integration of sensory information and direction of motor responses in the body.
The brain is divided into four major lobes which include the following:
frontal lobe, parietal lobe,temporal lobe , and occipital lobe.The frontal lobe is part of the brain that is located anterior or at the front of the head and it is the largest of all the lobes.
It is considered as the emotional control center and home to our personality. Therefore an injury to the frontal lobe of the brain which is labelled 1 in the picture will lead to the patient suffering from odd emotional states.
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The locations for three genes have been added to this cartoon. For clarity, the locations have only been noted on one chromatid. The lowest frequency of crossovers would occur between genes ____ and ____.
The locations for three genes have been added to this cartoon. For clarity, the locations have only been noted on one chromatid. The lowest frequency of crossovers would occur between genes a and b.
What are chromatids?
A chromatid is known as one of the two identical halves of a chromosome that has been replicated in preparation for cell division. There are normally two “sister” chromatids which are joined at a constricted region of the chromosome called the centromere but during the anaphase stage of a cell division, They get torn apart and they are distributed among the cytoplasm of each daughter cell.
A vast quantity of DNA that is arranged physically into a single structure is called a "chromosome." Because of this, the "sister chromatids" are regarded as being separate chromosomes even though they are joined together. Each chromatid is thought to be its own chromosome once they are divided during anaphase.
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what information can be gained from knowing the alpha (impact) angle of a blood stain? assume that the bloodstains all resulted from a single impact source. group of answer choices
By measuring angle of impact help investigators in determining the actions that may have taken place at the scene. The look of the resulting stain varies with the angle of impact.
What is angle of impact?The acute angle created between a blood drop's path and the plane of the surface it touches is known as the "angle of impact." Following the collision, the blood droplets that arise move through the air like a sphere. An ellipse is made when a drop of blood strikes a surface at an angle.
Types of blood stains?Bloodstains can be divided into three categories: projected or impact stains, transfer stains, and passive stains. Passive stains, which can take the form of droplets, flows, and pools, are frequently caused by the weight of an injured body. Transfer stains are caused by things contacting bloodstains already present and leaving behind wipes, swipes, or pattern transfers, such as a bloody shoe print or a smear from dragging a body. Impact stains, which are typically observed as spatter but may also include gushes, splashes, and arterial spurts, are caused by blood that projects through the air.
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the process of balance ion concentration by movement of fluid through a semipermeable membrane is known as group of answer choices osteoporosis. nerve impulse transmission. osmosis. diuresis.
Option C is the correct answer. Osmosis is the process of balancing ion concentration by the movement of fluid through a semi-permeable membrane.
Osmosis can be defined as the process of balancing the concentration of Ions from a Higher concentration to a lower concentration by the movement of a fluid through a semipermeable membrane. This process basically balances out the concentration of the ions where the concentration is lower.
Osmosis is responsible for balancing the concentration of ions from a region where the concentration is higher and the ions move from the higher concentration region to the lower. This makes sure that the environment is in a state of equilibrium.
Hence, Option C is the correct answer.
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which essential organelle, which is present in all other eukaryotes, is functionally absent in the parabasilids and diplomonads? group of answer choices
The mitochondrion is present in all other eukaryotes but functionally absent in the parabasilids and diplomonads.
In general, mitochondria are called powerhouses of the cell as they transform energy from one phase to another and also provide energy to the cells in the form of ATP.
Eukaryotic cells have high metabolic rates meaning their energy requirements are quite high which ultimately leads to the presence of a high number of mitochondria.
On the other hand, arabasalids and diplomonads are anaerobic with low metabolic rates and thus lack mitochondria.
Instead of mitochondria, these organisms have a special organelle called the hydrogenosome which regulates the activities of metabolism in them.
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in the 1940's schultes was looking for curare plants with native groups so he could help people injured in wwii undergo surgery with a more powerful muscle relaxer.
In the 1940's schultes was looking for curare plants with native groups so he could help people injured in WWII undergo surgery with a more powerful muscle relaxer is a true statement.
What is Curare?This is referred to as a type of plant which is an alkaloid and is known for its very high toxic content and is used in different parts of the world for different purposes.
It is used by individuals as a paralyzer of the motor nerves thereby making it to be used in anesthesia when different types of surgeries are being done by the individual.
This is therefore why it was also used for people who were injured in WWII who was going to undergo surgery so as to relax the muscles and ensure that there are no complications and it going on smoothly hence true is correct.
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The full question is:
in the 1940's schultes was looking for curare plants with native groups so he could help people injured in wwii undergo surgery with a more powerful muscle relaxer. true/ false
Imagine you are at the cafeteria for lunch. Your nose smells pizza. Your legs move over to where the food is being served. You have to balance the tray holding your plate and drink with both hands, look around for a free seat, and then sit down. This may seem simple; many different parts of your body have to work together to make all of that happen. To make sure your body can work correctly, even when it does many things at once, your body must be carefully organized.
a) explain how the organs worked together.
b) explain how the body works
Explanation:
the smell receptors in the nose would detect the smell from the pizza and send signals as impulses to the brain which identifies this. the brain would then send impulses to the leg muscles to coordinate contractions and relaxations to move the leg. the brain then coordinates both the hand muscles simultaneously and balance the tray in both hands, at the same time the eyes detect light and send impulses to the brain which studies it to find a free seat. following which the leg muscles coordinate to be seated.
the body works as organ systems by which organs that carry out similar functions work together by coordinating their functions.