Answer:
Guard
Explanation:
The opening between guard (pores) cells is known as stomata. The stomata helps in diffusion of atmospheric CO2 into leaf's interior and also involved in loss of water by plant leaves through transpiration. The opening and closing of stomata is controlled by guard cells.
Guard cells control the opening and closing of stomata by becoming turgid or flaccid because of potassium ions. The water potential decreases by increasing the solute concentration and water always flow from higher potential to lower potential. Remember maximum water potential is zero.
When potassium ions concentration increases inside the guard cells, water follow the potassium ions and guard cells become turgid which cause the opening of stomata. On the other side when the potassium ions concentration decreases inside the guard cells the water leaves the guard cells and guard cells become flaccid causing closing of stomata.
A scientist wants to change the DNA of a sexually reproducing organism and have the new DNA present in every cell of the organism. In order to do this after fertilization, she would change the DNA in the:_______1. Zygote2. Placenta3. Testes of the father4. Overies of the mother
Answer:
1. Zygote
Explanation:
A zygote is formed due to the fertilization of the female egg by the sperm cell.
A zygote cell is eukaryotic in nature. It is also a diploid cell because it is the coming together of a sperm cell which is a haploid cell and a female egg which is also a haploid cell.
A zygote cell contains DNA from both the sperm and the egg.
This is why in other to change the DNA of a sexually reproducing organism after fertilization and have an new DNA present in every cell of the organism, the scientist would have to change the DNA in the Zygote.
Histones are:____________ a) found in polyribosomes. b) enzymes found in lysosomes. c) proteins of the cytoskeleton. d) proteins associated with DNA in the nucleus. e) on the surface of rough endoplasmi
Answer:
D
Explanation:
Histone coat DNA
My Bearded Dragon's whole head is shedding and she's rubbing her head on her hammock to loosen the flaking skin. Can that damage her new skin and is there any reason or way to stop her. Also, what can I do to help her?
Answer:
No, It will not damage the new skin.
Explanation:
It may abraid the new skin, but it helps (naturally) get it off!
Answer: spray her down a lot with water most of the day:)
Explanation:
i have a bearded dragon and he was in shed and was rubbing his face on his branch but it doesn't damage the new coat of skin.
Alan always turns the aquarium light on before putting fish food into the tank. After a while, he notices that the fish swim to the top to look for the food as soon as he turns on the light. In this example, the ________ is the unconditioned stimulus.
Answer: Fish food
Explanation:
The unconditioned stimulus here is the fish food which is given to the fishes when the light is switched on.
The fishes are being habitual of this fact when the light is switched on the fishes swim to the upper part of the water in order to get food.
In an unconditioned response, the response generated by the body is involuntary and is trigerred when the things related to this happen.
What part of your ear is responsible for the popping sensation you feel when you’re flying in an airplane?
Answer:
Eustachian tube
Explanation:
A sample of the tissue from an inflamed, pus-filled area on the lower leg is treated with KOH and stained with GMS. Under the microscope golden brown spheres are visible. With what disease are these observations consistent?
Answer:
chromoblastomycosis
Explanation:
Here is the complete question;. A sample of the tissue from an inflamed, pus-filled area on the lower leg is treated with KOH and stained with GMS. Under the microscope golden brown spheres are visible. What disease are these observations consistent with?
A) pityriasis
B) fungemia
C) chromoblastomycosis
D) mycetoma
E) sporotrichosis
Answer is
C) chromoblastomycosis
Chromoblastomycosis is a chronic fungal infection of the skin and the subcutaneous tissue caused by traumatic inoculation of a specific group of dematiaceous fungi (usually Fonsecaea pedrosoi, Phialophora verrucosa, Cladosporium carrionii, or Fonsecaea compacta) through the skin.
Transcriptionally inactive genes:________, 1. are not resistant to DNase I. 2. often do not contain acetylated lysines in their histone tails. 3. are always located in the interior part of the cell nucleus. 4. are always located within euchromatin. 5. are not located within nucleosomes.
Answer:
often do not contain acetylated lysines in their histone tail
What is intramembranous ossification?
the formation of bone from preexisting hyaline cartilage models
the formation of bone from preexisting elastic cartilage models
the formation of bone from preexisting fibrocartilage models
the formation of bone from fibrous membranes
Explanation:
Intramembranous Ossification is the procedure in which development of bones from fibrous membranes.It is engaged with the development of the mandibles,the clavicles and the level bones of the skull.Hardening starts as mesenchymal cells structure a layout of things to come bone.They at that point separate into osteoblasts at the hardening community.Osteoblasts emit the extracellular framework and store calcium, which solidifies the network.The patient is recovering from hypovolemic shock. The nurse hangs a bag of normal human serum albumin (Albutein) and educates the patient about this fluid. The nurse evaluates that learning has occurred when the patient makes which statement?
1. It is a protein that pulls water into my blood vessels.
2. It is a protein that causes my kidneys to conserve fluid.
3. It is a super-concentrated salt solution that helps me conserve body fluid.
4. It is a liquid that has electrolytes in it to pull water into my blood vessels.
Explanation:
Hypovolemic shock is a life threatening condition that results in severe dehydration of the body or extreme blood loss. Hypovolemic shock causes blood volume to decrease to an extent where heart is unable to pump it.
Hypovolemic shock is such a critical condition where multiple organ failure may occur. It is often treated with intravenous rehydration therapy.
Serum albumin is a common compound which is given to a shock victim as it has the capability of pulling water into the body hence, restoring the blood volume.
So when patient says that "It is a protein that pulls water into my blood vessels." Shows that he understood what nurse taught her.
Bacteria that live around deep-sea, hot-water vents obtain energy by oxidizing inorganic hydrogen sulfide belched out by the vents. They use this energy to build organic molecules from carbon obtained from the carbon dioxide in seawater. These bacteria are _____.
Explanation:
Chemoautotrophs can incorporate their own organic molecules from the fixation of carbon dioxide. These life forms can deliver their own source of nourishment, or vitality. The vitality or energy required for this procedure originates from the oxidation of inorganic atoms,. For example, iron, sulfur or magnesium. Chemoautotrophs can flourish in exceptionally brutal situations, for example, remote ocean vents, because of their absence of reliance on outside wellsprings of carbon other than carbon dioxide. Chemoautotrophs incorporate nitrogen fixing microscopic organisms situated in the dirt, iron oxidizing microorganisms situated in the magma beds, and sulfur oxidizing microbes situated in remote ocean warm vents.Deep-sea bacteria around hydrothermal vents that utilize chemosynthesis to produce organic molecules from inorganic hydrogen sulfide and carbon dioxide are known as chemoautotrophs.
Explanation:The bacteria that live around deep-sea, hot-water vents are known as chemoautotrophs. These organisms are unique as they do not rely on sunlight for energy, like most other autotrophs that use photosynthesis. Instead, they thrive in dark, inhospitable environments by utilizing a process called chemosynthesis. In this process, chemoautotrophs oxidize inorganic substances such as hydrogen sulfide, which they obtain from the hydrothermal vents, to produce energy. This energy is then used to convert carbon dioxide, which they take from seawater, into organic molecules like glucose. The reaction representing this process is:
CO2 + O2 + 4H2S → CH2O + 4S + 3H2O
Not only do these bacteria sustain themselves in this way, but they also form the foundation of the deep-sea vent ecosystems, providing energy to other organisms such as giant tubeworms, which in turn can be consumed by other species, thus supporting the diverse biological communities around these vents.
These multicellular plants all have something in common, other than being autotrophic. Unlike moss and liverworts, they can grow to
great heights and survive in diverse environments. This is because there is a system for intercellular communication, that moves
substances throughout the plant; water and nutrients up from the ground and glucose from photosynthetic tissue to all parts of the
plant.
What is responsible for this intercellular interaction in higher plants?
es ))
hormones
B)
plasmodesmata
C)
xylem and phloem
D)
meristematic cells
Anterograde movement of transition vesicles is from __________. Anterograde movement of transition vesicles is from __________. the rough ER to the trans Golgi the trans Golgi to secrete at the plasma membrane the rough ER to the cis Golgi the cis Golgi to the trans Golgi
Correct Question:
Anterograde movement of transition vesicles is from __________.
A. the rough ER to the trans Golgi.
B. the trans Golgi to secrete at the plasma membrane.
C. the rough ER to the cis Golgi.
D. the cis Golgi to the trans Golgi.
Answer:
C. the rough ER to the cis Golgi
Explanation:
Vesicles are small enclosed sacs located inside or outside a cell. They are formed whenever there is a need for secretion of substances or transportation of materials from one organelle to another organelle within cell. Vesicles can also be used to store nutrients or water in the cell.
We have 3 classes of vesicles and they are:
a. Lysosomes
b. Transition or transport vesicles
c. Vacuoles.
The anterograde movement of transition vesicles is from the rough Endoplasmic Reticulum to the cis Golgi apparatus.
This movement takes place when proteins are made in the ribosomes found in the Endoplasmic Reticulum. The transition vesicles now transport this proteins from the rough Endoplasmic Reticulum to the cis Golgi apparatus where they get matured before they are released into the cytoplasm.
What do barbell curls and dips have in common? A. They are both leg exercises. B. They both use free weights. C. Neither exercise is isotonic. D. They are both arm exercises. Please select the best answer from the choices provided. A B C D
Explanation:
Barbell curls and dips both are arm exercise to decrease the weight of arm and musclesThis is perform by the flexing of both elbows and keeping your shoulder bone withdrewDo not allow heavy weight from lower back to arch and push up to about chest levelKeep the spine in zero potential positionDetermine the width of grip and your elbow to ought the potential position of exerciseHence the right answer is option D "they are both arm exercise"Weighted barbells are used during performing exercises that target the muscle biceps. An upper body exercise for increasing strength is called dips.
The correct option is:
Option D. They are both arm exercises.
This can be explained as:
Dips and barbell curls are the arm exercise that is for reducing the fats in arm muscles and builds triceps and biceps.They both are performed by flexing arms and withdrawing the shoulder bones.They both are used for achieving defined muscles and arms.Therefore they both are arm exercises.
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What is a possible health effect of exposure to smoke and asbestos in an indoor environment? a. skin cancer b. nerve damage c. lung problems d. reproductive issues Please select the best answer from the choices provided A B C D
Answer: Option C) Lung problems
Explanation:
Smoke are light particles produced during the burning of wood or other materials. Asbestos, on the other hand are forms of mineral deposits processed and used in building.
Both smoke and asbestos are harmful since they contain chemical toxins and can be inhaled. Hence, in an indoor environment people who suffer heavy exposure to them will develop chronic inflammatory lung disease.
Answer:
option c which is lung problems
Explanation:
Proteins, nucleic acids, and carbohydrates are grouped by common structural features found within their group. Lipids can be grouped based on: their high solubility in nonpolar solvents.
Answer:
In general, lipids are molecules of low water solubility, so they can be classified as low polar. In general, lipids are molecules of low water solubility, so they can be classified as nonpolar.
Answer:
The lipids belong to a group of heterogeneous substances, from the structural point of view as in the functions they fulfill in the cells. All lipids have in common that they are unctuous to the touch, very poorly soluble in water and soluble in apolar solvents, such as ether, chloroform, or benzene. These solvents are those used to extract them from cells or tissues.
Explanation:
Lipids are biomolecules that are identified as being poorly soluble in water and very soluble in non-polar organic solvents. Although lipids are chemically heterogeneous, they all have a common denominator with respect to their structure: a part of their molecule is of hydrocarbon characteristic, and therefore is apolar. This structural characteristic is responsible for water insolubility and solubility in non-polar solvents.
What are some ways that man has helped animals maintain their populations?
Answer:
we have took a almost extinct species and found a male and female and started breeding them so that species didn't go extinct and then we put them back out into the wild where their population could grow, hope this helps
Answer:
For my assignment I put; By putting them in zoos and by breeding them in safe places ouside the wilderness
Explanation: Can i get brainlyist? Ive been trying to get it for a while :)
In bacterial cell undergoing binary fission and balanced growth, __________. View Available Hint(s) In bacterial cell undergoing binary fission and balanced growth, __________. the proportion of all cell constituents will remain the same over time the proportion of protein in the cell increases as the Fts proteins form the divisome prior to cell division the proportion of DNA in the cell increases rapidly until the cell divides the time it takes to complete one round of DNA replication limits the generation time
Answer:
the proportion of all cell constituents will remain the same over time
Explanation:
Binary fission is asexual mean of reproduction in most of the bacteria. In binary fission the bacteria grow enough in size, its genetic material is duplicated and the parent bacterial cell is divided into two daughter cells. Binary fission is similar concept as mitosis in eukaryotes but its purpose is different. Mitosis is used to increase number of cells in eukaryotes but binary fission is used for reproduction in bacterial cells.
So as the mitosis produce the similar daughter cells to parent cell binary fission also produce similar daughter cells to parent. The proportion of all cell constituents will remain the same over time because in binary fission the fully grown bacterial cell is divided into two daughter cells after the replication of its genetic material which produces two identical daughter cells.
When a physical weakness or psychological distress renders a victim incapable of resisting or deterring crime, this is referred to as _____________________.
Answer:
When a physical weakness or psychological distress renders a victim incapable of resisting or deterring crime, this is referred to as target gratifiability.
Explanation:
When a person irrespective of his or her gender or age faces some psychological or physical complications but the person is unable to resist that action carried out and is vulnerable to any actions carried out by the person who is committing the very action then such a situation is termed as the target gratiability.
Fishing Gear sells a range of fishing products to outdoor enthusiasts and serious fishermen. Fishing Gear wants to reach its target market in a way that minimizes intrusiveness. Which of the following would be the best fit for Fishing Gear?
a. personal selling
b. print ads in Fishing and Hunting News
c. commercials on cable television
d. emails to all individuals with a fishing license
e. banner ads on websites
Select the correct statement about blood flow. A) It is relatively constant through all body organs. B) It is measured in mm Hg. C) It is greatest where resistance is highest. D) Blood flow through the entire vascular system is proportional to cardiac output.
Answer:
The correct option is (D). The value of cardiac output in the case of the human heart is approx. 5 liters in a minute. The multiplication product of heart rate and stroke volume gives the cardiac output.
Explanation:
The blood flow serves as the parameter for the calculation of cardiac output. For the restoration of homeostasis, increase or decrease in the cardiac output leads to the simultaneous increase and decrease in the blood flow and pressure respectively. Also, the reduction of cardiac output and venous return signifies the higher value of the tidal volume. The associated parameters namely stroke volume and heart rate is also affected by certain factors. Some of them includes age, gender, contractility, heart size and duration of contraction.
Besides the flow of blood in the body depends on the oxygen requirement of the target cell.
The correct statement about blood flow - D) Blood flow through the entire vascular system is proportional to cardiac output.
Blood flowis the movement of blood through the vessels from arteries to the capillaries and then into the veins
reaches almost every cell in the body and returned to the lungs after removing oxygen.The heart is the organ that regulates this flow by pumping it to the various body parts.different parts of the body might have different flow rates.the amount of blood the heart pumps each minute which is called cardiac output is proportional to Blood flow through the entire vascular system.Thus, the correct statement about blood flow - D) Blood flow through the entire vascular system is proportional to cardiac output.
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Which of the following statements about mutations is/are incorrect? Choose all that apply.
-Mutations arise from sources other than just mistakes made during DNA replication.
-DNA replication machinery generates errors at a lower rate than RNA transcription machinery.
-Mistakes in transcription are not as critical as mistakes in replication.
-Germ-line mutations can be passed down to offspring.
-Somatic mutations are often passed down to offspring.
-Mistakes in DNA replication do not lead to heritable mutations.
-Mutations in RNA during transcription are not inherited by daughter cells over multiple generations.
Explanation:
The incorrect statements about mutation in the given question are:
-Mistakes in DNA replication do not lead to heritable mutations.
- Somatic mutations are often passed down to offspring.
Mutations are changes or alteration in the gene sequence of an organisms that may result in significant changes in the organism. mutation is considered as the basis for diversity. Mutations can be silent, lethal or beneficial. Mutations can arise from several sources like mistakes made during replication, translocation of chromosomal segments etc.
A 12-year-old boy with Wolff-Parkinson-White syndrome presents with palpitations for the past hour. His blood pressure is 110/62 mm Hg and pulse is 166 bpm. The ECG reveals a narrow-complex tachycardia. Vagal maneuvers are ineffective. Which of the following is the next most appropriate management?
a) Adenosine
b) Cardioversion
c) Procainamide
d) Radiofrequency ablation
Answer: A- Adenosine
Explanation: Wolff-Parkinson-White syndrome is regarded in comparison with prevalent heart condition that makes the human heart to beat rapidly in an unusual way for an interval of time. However, Adenosine is a drug or medicine that is introduced into the body with a syringe after vagal maneuvers we're ineffective to reduce the heart rate of the patient.
The primary mRNA transcript is edited much as you edit a research paper before submitting it. Which of the following editing processes is correctly related to the analogy? A. cross out unnecessary phrases: B. cut out introns capitalize beginning of sentences: C. add a poly-A tail punctuate each sentence: D. insert a stop codon proofread paper: E. DNA polymerase replaces wrong bases
Answer:
Cross out unnecessary phrases: Cut out introns.Explanation:
The mRNA is a transcript of DNA . Primary mRNA transcript is edited before translation.
Mature mRNA is transcribed into protein, which is the final product of central dogma.
mRNA contains introns and exons , introns are removed by splicing.
the analogy of mRNA editing is Cross out unnecessary phrases: Cut out introns.
The proximal end of the ulna illustrates the relationship of form and function. The rounded trochlear notch articulates with the hourglass shape of the trochlea. This forms a joint that allows for ________.
Answer: hinge like motion of the forearm
Explanation:
The trochlea is the rough hourglass shaped structure that can be found on the distal end of the humerus. The trochlea articulates with the trochlear notch of the ulna. This structure performs the function of the hinge joint in the forearm and allows the functions like movements of the circumduction, flexion and extension muscles. These movements does not take place in the antero-posterior side of the humerus.
The salivary amylase gene (AMY1) is present in two diploid copies in chimpanzees. Humans are known to have between 6-15 copies, an adaptation that is thought to be related to the high-starch diet of humans. This difference among humans is an example of:_______.
Evolution and Natural Selection
Explanation:
Salivary amylase gene (AMY1) copy number is correlated positively with salivary amylase protein levels, and that individuals from populations with high-starch diets have on average more AMY1 copies than those with traditionally low-starch diets. Higher AMY1 copy numbers and protein levels likely improve the digestion of starchy foods, and may buffer against the fitness-reducing effects of intestinal disease.
Chimpanzees did not feed much on starchy food and thus had only diploid copies of AMY1 gene. However, humans have 6-15 copies of AMY1 gene because of high consumption of starchy food. Therefore, as the evolution of chimpanzees occured, humans adapted itself to what changes in their habitat.
In order to survive, all organisms must carry out 1) autotrophic nutrition 2) heterotrophic nutrition 3) enzyme-controlled reactions 4) the process of reproduction
Explanation:
(3) In order to survive, all organisms must carry out enzyme-controlled reactions.
Enzymes is the Most of the responses that happen in living life forms are chemical controlled. They are along these lines explicit in the responses that they catalyze one chemical will respond with particles of one substrate. The site of the response happens in a territory on the outside of the protein called the active site. Enzymes can be influenced by an assortment of elements, for example, temperature, pH, and focus. Chemicals work best inside explicit temperature and pH ranges, and imperfect conditions can make a protein lose its capacity to tie to a substrate.The most of the enzyme has an optimum pH range.All organisms need to carry out essential processes like organismal nutrition and enzyme-controlled reactions to survive, and maintain homeostasis. Organisms can be autotrophs or heterotrophs based on their mode of obtaining nutrients. Individual survival does not depend on the ability to reproduce, but does require energy transformation and stable internal conditions.
All living organisms require certain essential processes to survive. One of the foundational aspects is organismal nutrition, which determines how an organism acquires energy necessary for cellular functions. In terms of nutrition, living entities can be classified into groups such as photoautotrophs, who obtain energy from light, and heterotrophs, who gain energy by consuming other organisms.
Another key process is the ability to conduct enzyme-controlled reactions. These reactions are crucial for converting energy into a usable form (usually ATP) and facilitating the growth, repair, and reproduction of the organism. Additionally, organisms must maintain a stable internal environment, often referred to as homeostasis, which allows them to function effectively in varying external conditions.
While reproduction is an important life process for the continuation of a species, it is not essential for the survival of an individual organism. Therefore, not all organisms must reproduce to survive, but all must carry out enzyme-controlled reactions and maintain homeostasis to continue living.
Adrian is recovering from schizophrenia. She has been taking high doses of antipsychotic medications for a very long period of time and has begun to experience uncontrollable movements of her mouth and tongue that make her appear as if she were chewing food in a very exaggerated way. Adrian is experiencing the symptoms of:__________
a) angina.
b) tardive dyskinesia.
c) blepharochalasis.
d) scleritis.
Answer:
Tardive dyskinesia.
Explanation:
Schizophrenia may be defined as the condition in which the individual is unable to accept reality and interpret the reality in different ways. The symptoms are hallucination, disrupted speech and nehativity.
Tardive dyskenia is the medical condition in which the individual cannot control their hand and body movements. This condition might occur due to the medication that have been taken to treat the schizophrenia. The drugs inhibits the effects of dopamine that causes tardive dyskenia.
Thus, the correct answer is option (b).
Answer: Option B
Explanation:
Tardive dyskinesia is a problem raised due to side effect of the antipsychotic medications. These classes of drugs are used to treat the medical conditions like schizophrenia and other mental disorders.
In this problem there is an uncontrolled movement of the body parts.One might blink eye, movement of tongue in such a way that it appears like chewing food, waving the arms without any reason.
Hence, the correct answer is option B
If the trade in tiger products is banned, tiger reserves are guarded by well equipped staff, communities abutting tiger habitat are given a stake in protecting tigers, and the makers of traditional medicines can be persuaded that tiger parts are not needed, then tiger poaching will be halted, habitat and life sustaining prey will be restored, and the immanent extinction of tigers in the wild will be averted. a. Non argument. b. Argument; conclusion: The trade in tiger products is banned. c. Argument; conclusion: Tiger poaching will be halted. d. Argument; conclusion: The makers of traditional medicines.. not needed.
Explanation:
An argument consists of connecting pieces of information that are well backed and supported by facts thereby leading to a validated conclusion In this passage, the terms and conditions resulting in the halting of tiger poaching are based on an assumption or supposition. An argument has two essential cases a) A claim with true premises and b) True premises supporting the claimThis passage represents flawed arguments and hence it must be categorized as non-argumentHence, the right answer is option a " Non argument"
What is the name of the process where a material that is weak enough to flow will rises when it is hot and sinks when it is cool causing a circulation cell?
Answer:
Convection process
Explanation:
The process of convection is commonly takes place in the mantle portion of the earth and also at the atmosphere.
This process is usually defined as the process where the materials are heated at a high temperature, thereby making them less denser, and due to their low density they are gradually pushed upward into the upper zones. As the materials rises up, the density gradually increases due to the lowering of the temperature, and then the materials again sinks. This give rise to the formations of a circulating cell, which are commonly known as the convection cells.
Consider the biochemical pathway below, where A, B, and C are substrates and products and E1 and E2 are the enzymes that catalyze the reactions. If enzyme 1 (E1) is inactive, which of the following compounds will become deficient?
Answer: only A
Explanation:
Final answer:
If enzyme 1 (E1) is inactive, the first intermediate product that E1 is supposed to produce will become deficient, as E1 catalyzes the first reaction in the pathway.
Explanation:
When considering the biochemical pathway where substrate A is converted to a final product and enzyme 1 (E1) is inactive, the first intermediate product that enzyme E1 was responsible for producing will become deficient. This is because E1 catalyzes the first step in the reaction series, converting substrate A to the next intermediate, let's say, substance B. If E1 is inactive, the conversion cannot occur, leading to a buildup of substrate A and a deficiency of substance B and any subsequent products.
The concept of enzyme-catalyzed reactions involves the enzyme binding to its substrate(s) at the active site, forming an enzyme-substrate complex which eventually converts the substrate into the product. The enzyme remains unchanged after the reaction and can be reused. In the case of allosteric regulation, the final product or another molecule can bind to the enzyme at a site other than the active site, causing a conformational change. This change can either inhibit or enhance the enzyme's activity. For feedback inhibition, the end product binds to the first enzyme in a pathway, decreasing its activity, and thus reducing the production of itself when sufficient amounts are present.