Answer:
The stomatal aperture width closes once the concentration inside the leaves is normal. More amount of carbon dioxide is not required for the plant cell.
The stomatal aperture is there to maintain the level of oxygen and carbon dioxide in the plant cell. The stomatal aperture opens to intake carbon dioxide and move oxygen out of the cell.
But once the carbon dioxide concentration is optimum this width closes and then no more carbon dioxide is inhaled inside the plant cell.
What is the carbohydrate formed in photosynthesis?
Plants during the photosynthetic reaction, the energy and carbohydrates produce to maintain their life cycle. The photosynthetic system consists on two part as light-dependent an independent cycle. In the dependent cycle, the plants use the light to generate the energy compounds as ATP to start up the Independent cycle. The independent cycle also known as the Calvin Cycle, the environmental carbon dioxide is fixed to generate the carbohydrates. The most important carbohydrate that generates in this process is the glucose. The plant generates carbon dioxide and lactose is only present in milk.
How does decomposer supply phosphorus to soil,groundwater,oceans,lakes,ponds,and rivers.
On dying of plants or animals decomposers transform their proteins and other nitrogen containing compounds into ammonia. This return the phosphorus to the soil. This aids in the replenishment of phosphorus back in the ecosystem.
What are decomposers?The organisms involved in degrading dead and decaying organisms are called decomposers.
On dying of plants or animals decomposers transform their proteins and other nitrogen containing compounds into ammonia.
The release of phosphorous in this process return the phosphorus to the soil. This helps in replenishment of phosphorus back in the ecosystem.
Thus, in this way decomposers provides phosphorus to soil, groundwater, oceans, lakes, ponds, and rivers.
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Which statement is true for both plant and animals cells?
A) They have cell nuclei and vacuoles.
B) Animal cells are generally smaller than plant cells.
C) They have centrioles and cellulose.
D) They have mitochondria and chloroplasts.
The right answer is B) Animal cells are generally smaller than plant cells.
The cell is the basic structural and functional unit of any living organism, that is to say that all living forms are composed of one or more cells. We speak of a unicellular or multicellular organism. The cells are either of the prokaryotic type or of the eukaryotic type.
The plant cell is larger than the animal cells, all the sites of biology without exception support this point of view. The animal cell has an average size of 50 microns (the largest of which, the oocyte is 120 micrometer) while the plant cell has an average size between 100 and 200 micrometers, so about four times more.
The vacuole is not systematically found in all animal cells (except for some specialized cells or macrophages where digestive vacuoles are found), moreover, it is not as characteristic as that of plant cells. it is much smaller or non-existent. Rare authors speak of vacuoles in animal cells but the term vesicle is more appropriate. Are different from vesicles because vacuoles:
1. Have a longer life
2. Are relatively stationary (static)
3. Are often very big
Explain how the structure of an enzyme makes that enzyme specific
Enzyme specificity lies in its structure, particularly its active site, which is unique and suitable for a specific substrate. The enzyme structure changes to accommodate its substrate on binding, a phenomenon called 'induced fit'. However, some enzymes show flexibility and can act on several different substrates.
Explanation:The specificity of an enzyme is determined by its structure, particularly at the active site. This is the region of an enzyme where the substrate binds and the chemical reaction it catalyzes takes place. The active site contains a unique combination of amino acid residues or side chains that create a specific chemical environment suitable for binding with a specific substrate. This is akin to a jigsaw puzzle where the pieces fit together perfectly.
The interaction between an enzyme and its substrate is often described by two models: the 'lock-and-key' hypothesis and the 'induced fit' hypothesis. The 'lock-and-key' hypothesis suggests that the active site and the substrate are complementary to each other, fitting together like a key in a lock. The 'induced fit' hypothesis suggests that the enzyme structure is flexible, adjusting to accommodate the substrate. This adjustment makes the active site an even better fit for the substrate, a bit like a glove moulding to the shape of a hand inserted into it.
Despite this specificity, there can be some flexibility as well. Some enzymes are capable of acting on several different structurally related substrates. Therefore, there is a specifically matched enzyme for each substrate and thus, for each chemical reaction.
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Enzymes are specific due to their unique active sites that fit substrates like a lock and key. The induced fit model describes how enzymes can slightly adjust their shape to bind substrates more tightly.
Enzymes are highly specific biological catalysts due to their three-dimensional structure. The specificity of an enzyme is primarily attributed to its active site, which has a unique shape that fits only specific substrate molecules, much like a lock and key.
This model suggests that the enzyme (lock) can only be activated by a substrate (key) that exactly fits its shape.Another model is the induced fit model, where the enzyme changes shape slightly after binding the substrate to achieve a tighter fit. This adaptability allows for better alignment of the enzyme's catalytic site with the chemical bonds in the substrate, facilitating the reaction. The specific arrangement of amino acids around the active site creates a favorable environment for the reaction, enhancing the enzyme's effectiveness.Overall, the enzyme's structure is finely tuned to its specific substrates, enabling precise catalytic activity essential for various biochemical reactions.
Electric charge can be transferred from one conducting body to another _________.
Which element in Group IIA will have the highest melting temperature?
Ba
Be
Re
Ca
Sr
Mg
JUST ONE ANSWER
BERYLLIUM - 1278 degrees C
The right answer is Be (1 287 °C).
Beryllium (Be) is a chemical element with the atomic number 4 and an atomic mass of 9,0121831 u. In the periodic table, it is the first representative of alkaline earth metals.
A bivalent element, beryllium is an alkaline-earth metal with a steel-gray appearance. It is light, fragile and toxic.
Beryllium has the highest melting point of all light metals. It is fragile, but lighter and six times stronger than aluminum.
Individuals suffering from congenital analgesia have a shorter life span due to ________.
Answer:
The correct answer would be repeated severe injuries because of pain insensitivity.
Explanation:
Congenital analgesia is a genetic disease that causes an individual to have no pain or pain insensitivity. This lack of pain leads to an accumulation of bruises, wounds, broken bones, and other health problems that may go undetected.
These injuries often lead to a short life expectancy in people with congenital analgesia to pain.
Thus, the correct answer would be repeated severe injuries because of pain insensitivity.
What cell organelle can be seen changing position in the moving cytoplasm of elodea?
Which actions may aggravate the symptoms of venous insufficiency?
How do bacteria maintain their internal ph despite the ph of the environment in which they grow?
An increase in the severity of a disease or its symptoms is called:
An increase in the severity of a disease or its symptoms is called exacerbation. Acute diseases have a short duration with predictable progression, while emerging diseases are new or growing in incidence.
An increase in the severity of a disease or its symptoms is often referred to as an exacerbation. When a disease is said to be emerging, it means that the disease is making an initial appearance in a population or that is increasing in incidence or geographic range. On the other hand, a syndrome refers to a set of symptoms or conditions that occur together and suggest the presence of a certain disease or an increased chance of developing the disease.
An acute disease is a disease of a relatively short duration that develops and progresses in a predictable pattern, often characterized by a sudden increase in severity or symptoms.
People’s choices can sometimes have negative effects on their own health, as well as the health or well-being of others. Describe two of these choices, explaining how they can impact the individual and others.
A biochemist measured the amount of dna in cells growing in the laboratory and found that the quantity of dna in the cells doubled __________.
A biochemist measured the amount of DNA in cells growing in the laboratory and found that the quantity of DNA in the cells doubled between the G1 and G2 phases.
Why does the amount of DNA get double between the G1 and G2 phases?The amount of DNA gets doubles in between the G1 and G2 phases because in between both of these phases, there is a phase of synthesis (S-phase).
After resting condition, the cell enters the S-phase, where DNA replication occurs, and the amount of DNA gets doubled after the completion of this phase throughout.
During the G1 phase of the cell cycle, the cell does not have the competence to replicate its DNA. From this phase of cell division, the cell enters the S-phase where the DNA gets synthesized and the amount of its gets doubled in each cell.
Therefore, a biochemist measured the amount of DNA in cells growing in the laboratory and found that the quantity of DNA in the cells doubled between the G1 and G2 phases.
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Which condition is most likely induced by salicylate poisoning?
Li Ming thinks that chlorophyll is a reactant of photosynthesis, but her classmate Julian disagrees. Who is correct, and why?
A combination of alcohol abuse and vitamin b deficiency can lead to
explain why the populations of great apes in africa are declining
Answer: Due to deforestation
Explanation:
The population of great apes is declining in Africa because each year around 13,000 square kilometres of forest is being cleared for the purpose of agriculture and human settlement.Deforestation at such a rate is destroying the native habitat of great apes and may lead to their extinction in the next 20 years.Garth is a heavy cigarette smoker. what types of sexual problems can he possibly experience due to smoking?
A pregnant woman in her second trimester comes to the prenatal clinic for a routine visit. she reports that she has a new kitten. the nurse would have the woman evaluated for which infection
X-ray imaging of the arterial blood vessels in the brain after injection of contrast material
When a tumor is too large or too serious for a lumpectomy, a ________ is performed?
When a tumor that is present on an individual is too large or serious for lumpectomy, the procedure that is to be performed is mastectomy. This procedure is a way of having to remove a tumor in a form of surgery to prevent the tumor from spreading or to prevent any serious consequences.
A mastectomy is performed when a tumor is too large or too serious for a lumpectomy. Surgery aims to treat isolated, solid cancers, and a biopsy is used for diagnosis before surgical procedures.
Explanation:When a tumor is too large or too serious for a lumpectomy, a mastectomy is performed. Surgery is a common intervention for treating isolated, solid cancers where surgeons aim to remove the whole mass along with local lymph nodes if necessary. A biopsy may be conducted prior to surgery to analyze tissue specimens in a medical laboratory for cancer diagnosis. In situations where tumors cannot be removed without damaging vital structures, as it sometimes happens in the brain, other types of treatments are mandatory.
Waste products which build up in the body can become deadly.
Answer:
true
Explanation:
Permafrost, or permanently frozen subsoil, characterizes _____.
Tascha is on a medication that increases the pH of the stomach and makes it alkaline. What is the effect of this medication?
Answer: The effect of the medication depends on the quantity of the alkaline.
Explanation:
Alkaline can help slow the aging process, regulate your body’s pH level, and prevent chronic diseases like cancer.
Researchers found that drinking naturally carbonated artesian-well alkaline water with a pH of 8.8 may help deactivate PEPSIN, the main enzyme that causes acid reflux.
Alkaline may also have benefits for people with high blood pressure, diabetes, and high cholesterol.
In summary, Alkaline has the following advantage;
-Anti-aging properties (via liquid antioxidants that absorb more quickly into the human body)
-colon-cleansing properties
immune system support
hydration, skin health, and other detoxifying properties
weight loss
-cancer resistance
Too much alkalinity may also agitate the body’s normal pH, leading to metabolic alkalosis, a condition that may produce the following symptoms:
-nausea
-vomiting
-hand tremors
-muscle twitching
-tingling in the extremities or face
-confusion
Alkalosis may also cause a decrease in free calcium in the body, which can affect bone.
The “alkaline” in alkaline water refers to its pH level. The pH level is a number that measures how acidic or alkaline a substance is on a scale of 0 to 14. For example, something with a pH of 1 would be very acidic and something with a pH of 13 would be very alkaline.
Using ____ medications may lead to excessive plugging of the airway with secretions
According to research on adherence to exercise programs, what percentage of individuals starting an exercise program will likely drop out after six months
When rinsing a buret after cleaning it with soap and water, should the rinse be dispersed through the tip or the opening on the top?
The buret tip contains cleaning water, which has the potential to change the titrant's concentration. As a result, it is recommended to pour the rinse solution from the buret's tip 2–3 times.
What are the different uses of buret?A burette is a laboratory tool frequently used in chemical and industrial testing, particularly for the titration procedure in volumetric analysis, to dispense and quantify varying volumes of liquid or occasionally gas.
Solution is delivered using a buret in precisely calculated, variable volumes.
Burets are mostly used for titration, which is the process of delivering one reactant at a time until the exact end point of the reaction is reached.
Rinse the buret's tip with water from a wash bottle, then gently pat it dry. If your buret is leaking, wait a minute and look for solution on the tip. Before taking an initial volume reading, the tip needs to be dry and clean.
Therefore, it should be dispersed through the tip.
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What is the difference between work and energy?
Work is the process of transferring energy through the motion of an object by a force, while energy represents the capacity to perform that work. Potential energy stores energy within a system, unlike work which cannot be stored. Techniques for calculating work are used to determine the energy transfer in various situations.
Difference Between Work and Energy:
Although work and energy are closely related concepts in physics, they are not the same. Work is defined as a force causing the movement—or displacement—of an object. In the equation W = Fd, 'W' stands for work, 'F' for force, and 'd' for displacement. Work effectively transfers energy from one object to another, modifying the total energy of the object.
In contrast, energy is the ability to do work. Potential energy relates to the energy stored within a system, whereas kinetic energy, given by the equation KE = 1/2mv², is the energy of motion. When work is done on an object, it can lead to an increase in either potential or kinetic energy, which are forms of mechanical energy.
Unlike work or energy, heat cannot be stored and is related to changes in populations of energetically different states. Both heat and work are energy processes, not entities that can be contained like energy itself. Therefore, techniques for calculating work are central in determining the energy transferred, for example, from kinetic to thermal energy by a car's brake shoes.
Confined aquifers are found _____.
An aquifer is of 2 types - unconfined and confined aquifers. It can be defined as a body of permeable rock which can contain groundwater.
Confined aquifers have an impermeable rock layer that prevents water from seeping into the aquifer from the ground surface. So, this aquifer is present between the rocks layer that are impermeable.
The main energy-producing organelles of plants are called ____________ and have two major parts.
Correct answer: Mitochondria
Mitochondria is an organelle that is known to produce the energy currency called the ATP of the cell. The main reaction or cycle involve in that area citric acid cycle, Krebs cycle.
All animal and plant possess organelles that regulate specific function inside the cell. Mitochondria and chloroplast are energy-producing organelles inside the cell. The supply adenosine triphosphate (ATP), which provide fuel to the body for their growth.