Biochemistry

Hydrophobic means water fearing tails and hydrophilic means water loving heads

First of all, these terms are involved when you are looking at the cell membrane. The structure of the cell membrane is called a phospholipid bilayer. Which means that the cell membrane is actually made to two layers and not one.

If you take a look at the image, you will see that the little white sphere shaped objects are the hydrophilic heads, and the two little string-like objects attached to the hydophilic heads are the hydrophobic tails. All of the other stuff in the image is all of the extracellular proteins and such. But yes, as the previous answerer said. The hydrophilic heads are on the outer part of the bilayer because they are "water loving". Whereas the hydrophobic tails are on the inner part of the bilayer for two reasons. First, they are hydrophobic or "water fearing" so they will repel water. An example of hydrophobic is oil in water. The oil will form blob-like shapes in the water. Second, the hydrophobic tails also have a somewhat attraction to each other.

"They" could be spraying various things, such as pesticides, herbicides, or even geoengineering substances for weather modification. It is best to research and verify the specific spraying activity in question for accurate information.

In general, they use neither. The terms active and passive transport refer to movement ACROSS cell membranes--from one side to the other. Neurotransmitters are packaged inside membrane and they leave the neuron through exocytosis. They re-enter the neuron through receptor-mediated endocytosis. That means they never really pass THROUGH the membrane.

ATP is the chief energy currency of all cells.

The cell membrane controls what enter and leaves the cell, it also gives the cell shape.

The gases of the environment are important to all living things because they help them in various processes. For instance animals need oxygen for respiration while the plants need carbon dioxide for photosynthesis.

Yes, bacteria use glycolysis to break down glucose into energy in the form of ATP. Glycolysis is a universal metabolic pathway found in nearly all organisms, including bacteria.

Phospholipids have polar head and non-polar tails. Phospholipids help form cell barriers, like the cell membrane.

No, RNA is not the universal energy currency in living cells. Adenosine triphosphate (ATP) is widely recognized as the universal energy carrier in cells, playing a critical role in energy transfer and storage within the cell. RNA, on the other hand, is primarily involved in directing protein synthesis and gene expression.

Excessive production of parathyroid hormone (PTH) can lead to demineralization of bones and increase the risk of spontaneous fractures. This condition is known as hyperparathyroidism.

Tertiary structure in proteins is held together by intermolecular R group interactions, including hydrogen bonding, hydrophobic interactions, ionic interactions, and disulfide bonds. These interactions help stabilize the folding of the protein into its unique three-dimensional shape.

Free nucleotides are essential building blocks for the synthesis of DNA and RNA molecules in cells. They are required for processes like DNA replication, gene expression, and protein synthesis. Without free nucleotides, cells would not be able to replicate, grow, or carry out their normal functions.

All of them.

Tertiary is the overall 3D shape of the protein

Quaternary is what proteins it is attached to and how

Primary is the actual order of the amino-acids which make up the chain

Secondary is the way that that chain coils or folds

So 'helix' refers to the coiling of the chain. Hence it is the secondary structure.

Quinolones and rifamycins are examples of drugs that inhibit nucleic acid synthesis specifically in prokaryotes. Quinolones target bacterial DNA gyrase and topoisomerase IV, while rifamycins target bacterial RNA polymerase.

The amino acid linked to the development of eosinophilia myalgia syndrome is tryptophan. This rare blood disorder occurred in people who consumed contaminated tryptophan supplements in the late 1980s. Symptoms of eosinophilia myalgia syndrome include severe muscle pain, joint pain, and elevated levels of eosinophils in the blood.

Aerobic respiration. Fermentation produces a net gain of 2 ATP per glucose molecule, while aerobic respiration produces a net gain of 36-38 ATP per glucose molecule. This is due to the incomplete breakdown of glucose and the absence of an electron transport chain in fermentation.

Non-competitive inhibition. This type of inhibition occurs when the inhibitor binds to a site on the enzyme that is different from the active site, causing a conformational change in the enzyme and affecting its ability to bind substrate. The inhibitor can bind to both the free enzyme and the enzyme-substrate complex with equal affinity.

In enzymes, reactant molecules bind to a specific region called the active site. This is where the chemical reaction takes place and the reactants are converted into products. The active site has a specific shape that matches the reactants, allowing for precise binding and conversion.

Yes, an amino acid is an organic molecule. It is composed of a central carbon atom bonded to an amino group, a carboxyl group, a hydrogen atom, and a side chain (R group) that differs among different amino acids.

A competitive inhibitor is a chemical that has a similar shape to the substrate and can bind to the active site of the enzyme without the product being formed. This binding prevents the substrate from binding to the enzyme and forming the product, reducing the enzyme's activity.

The unsaturated ones are the ones with one or more double bonds in the carbon chain, by which they are lacking 2 H atoms per double bond as compared with the saturated fatty acid.

The unsaturated ones are in general more 'healthy' with respect to possible cholesterol build up in blood vessels (cardial risks)

No, tryptophan is an amino acid, not a codon. The start codon is AUG, which codes for the amino acid methionine.

The answer is vitamin D. In presence of ultraviolet rays cholesterol is converted to vitamin D in the skin. One hydrogen atom is attached to it in liver and second in kidney to form active form of vitamin D.