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What does not require energy obtained from pre-formed organic molecules?
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∙ 10y ago
Autotrophs
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∙ 10y ago
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Why water has a higher boiling point than an organic molecule with same molecular weight?
it has to do with intermolecular forces, namely hydrogen "bonds". This attraction causes the particles to move less and thus require more energy to change phases
Why does ascending saturated air cool more slowly than ascending unsaturated air?
Saturated air contains relaitvely higher amount of water molecules. Thus it requires much time to cool. Whereas in case of unsaturated air, the number of water molecules are less. So, it's much obvious that lesser amount of water molecules require less time to cool.
Why does silver iodide melt faster than vanillin?
The attractive forces holding the molecules of silver iodide together (intermolecular forces) are stronger than those in vanillin, therefore they require more energy to break them. The attractive forces between two molecules of silver iodide are much stronger than the attractive forces between two molecules of vanilin. This is due to the different types of bonds found in each molecule - silver iodide molecules contain ionic bonds, which are very strong, while vanilin molecules contain covalent bonds which are a lot weaker. Since the attractive forces are higher in silver iodide, it requires a lot more energy (i.e. heat) to break these attractive forces in order to melt silver iodide, therefore it has a much higher melting point than vanilin. The bonding of atoms.
How many molecules of carbon dioxide are used up by the plant in producing each molecule of oxygen?
At least sixthis is because photosynthesis uses Carbon Dioxide, Water and Sunlight, to produce glucose. A glucose molecule is made of 6 carbon, 6 oxygen, and 12 hydrogen atoms. Since carbon dioxide is the only molecule in photosynthesis containing carbon atoms, and it only contains one per molecule, you would need a minimum of six molecules of it combined with six molecules of water in order to produce glucose. (with an extra 12 oxygen atoms)
Does solution weathering require water?
yes
What type of organic molecules require the action of emulsifiers to be digested?
Lipids: fats from animals & oils from plants. Oils are liquid at room temperature.
What are similarities between autotrophs and Heterotrophs?
Similarities: 1. both have life 2.need air, water and sunlight for survival 3. require organic molecules(food) for metabolism
What about combustion reaction makes them different from either synthesis or decomposition reaction?
The short answer is combustion reactions are a subset of synthesis reactions that require one of the reactants to be oxygen. Common combustion of organic molecules results in the formation of CO2 . However, it is not required that combustion be limited to organic molecules. They are different from decomposition reactions in the same way synthesis is the opposite of decomposition.
What are pathways that require energy to combine molecules together called?
Anabolic pathways require energy to combine simple molecules into more complex ones.
Do all fungi require organic material for growth?
Yes
Making and breaking molecules in the body require the aid of?
energy
How does carbon become of organic molecules?
In living organisms, carbon fixation (incorporation of atmospheric inorganic carbon dioxide into organic compounds) is carried out by certain microbes and most plants and the other organisms feed on plants to acquire their organic compounds. The process of carbon fixation is called photosynthesis and it's driven by sun light and catalyzed by enzymes. In organic chemistry labs, chemists have found ways to either create organic molecules from inorganic ones or add carbon onto preexisting organic molecules, though these processes require very strigent reaction conditions that are different from those in living organisms, mostly because we cannot make use of enzymes the same way as living organisms do. The earliest experiments involved reacting carbon dioxide and ammonia by adding an electrical current, making urea as the product. Current organic chemstry techniques have countless ways to manipulate organic compounds and it will be futile to try to list even a fraction of the techniques. Follow the link below for a Wikipedia page that has links to a large number of possible organic chemistry reactions.
In glycolysis the first few steps require energy from two ATP molecules. The net gain of ATP molecules at the end of this pathway is?
2 ATP molecules
Does a medium need molecules?
Mediums are made of molecules. Actually, we're all made of molecules whether we are mediums or not. We require molecules to breath, to drink, to eat, and to exist. Psychic ability has no bearing on one's need for molecules.
What is the energy transfer process that does not require the presence of molecules to transfer heat?
Radiation
Are the DNA molecules used for transformation of animal cell not require marker genes?
No
What moves substances in and out of a cell?
Most molecules can move in and out of a cell, but different molecules have different methods of getting in- Small Non-Polar molecules can diffuse across the lipid bilayer Medium sized molecules of any kind require a specific protein channel HUGE MOLECULES require a process called endo and exocytosis
