Identify the organelles in the cell to the right.
A: _____
B: _____
C: _____
D: _____
E: _____
F: _____
A- Vacuole
B- Chloroplast
C- Cell membrane
D- Golgi bodies
E- Smooth and rough endoplasmic reticulum
F- Cell wall
This is a structure of a plant cell which unlike animal cell has a cell wall as well as plasma membrane. It also contains large vacuoles present in the center of the cell. The green color of the plants is due to the presence of chlorophyll which is present in an organelles called chloroplast.
Answer: here are the correct answers
Explanation:
A
✔ vacuole
B
✔ chloroplast
C
✔ cell membrane
D
✔ Golgi apparatus
E
✔ endoplasmic reticulum
F
✔ cell wall
Lenny drank a 5-ounce glass of wine and two 12-ounce bottles of beer during dinner. how much pure alcohol did he consume
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.
What simple molecule reacts with itself to form a disaccharide?
Which of the following is not a way humans have directly impacted coral reefs?
Answer:
algae farming
Explanation:
How do bacteria maintain their internal ph despite the ph of the environment in which they grow?
Permafrost, or permanently frozen subsoil, characterizes _____.
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.A combination of alcohol abuse and vitamin b deficiency can lead to
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.
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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What process is similar in both fermentation and cellular respiration?
A) aerobic ATP production
B) electron transport chain
C) glycolysis in the cytoplasm
D) hydrogen ion pumping
The right answer is C) glycolysis in the cytoplasm .
*Glycolysis produces pyruvate, a molecule able to cross the envelope of the mitochondria where it undergoes complete oxidation during the Krebs cycle (aerobic). This oxidation in the mitochondrial matrix is accompanied by the production of reduced R'H2 compounds and carbon dioxide, which must be rejected by the cell.
*The fermentation occurs in a medium without oxygen, an anaerobic medium. This metabolism replaces cellular respiration and allows, following glycolysis, to recycle reduced R 'transporters (R'H 2).
Small reminder, glycolysis is the degradation of a molecule of glucose into two molecules of pyruvate. This is the starting point of fermentations
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.
What percent of the total iron content of a normal diet is heme iron ?
How do earths layers interact with each other
Li Ming thinks that chlorophyll is a reactant of photosynthesis, but her classmate Julian disagrees. Who is correct, and why?
Which of the following elements is the most reactive?
Potassium
Lithium
Sodium
Rubidium
Answer: Option (d) is the correct answer.
Explanation:
It is known that reactivity of atoms increases on moving down the group. This is because on moving down the group there is also increase in number of shells.
As a result, outer shell electrons move away from the nucleus and thus force of attraction between the nucleus and electrons decreases.
Hence, it is easy to remove the electrons from outermost shell and thus reactivity of atom increases.
Therefore, we can conclude that the given elements are group 1 elements and largest of them is rubidium. Thus, out of the given options, rubidium element is the most reactive.
The most reactive element among the options provided is potassium, the correct option is (a).
Potassium is the most reactive due to its lower position in Group 1 of the periodic table. Reactivity in alkali metals increases down the group because the outermost electron is further away from the nucleus, making it easier to lose and engage in chemical reactions.
As a result, potassium readily reacts with water and oxygen, vigorously producing hydrogen gas and metal oxides. Due to its high reactivity, potassium is stored in mineral oil to prevent rapid oxidation. Additionally, its reactivity is harnessed in various industrial and laboratory processes, the correct option is (a).
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The complete question is:
Which of the following elements is the most reactive?
a. Potassium
b. Lithium
c. Sodium
d. Rubidium
For water to travel across the cell membrane at a substantial rate, the water molecules travel through protein channels
known as aquaporins.
Which actions may aggravate the symptoms of venous insufficiency?
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.
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.
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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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.
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.
What cell organelle can be seen changing position in the moving cytoplasm of elodea?
Which condition is most likely induced by salicylate poisoning?
From a sitting position, unbend the knee and bring one foot up to the level of the knee. this is
What organelle was the thin white layer around the egg (keeps the outside out and the inside in)
How do floating disks correspond to the rate of photosynthesis?