Biochemistry

NAD+ is an electron carrier molecule that helps pass energy from glucose to other pathways in a cell by taking high-energy electrons and holding on to them until they can be transferred to other molecules.

Ribosomal RNA (rRNA) is a type of RNA that forms part of the ribosome, the cellular machinery responsible for protein synthesis. It helps in the binding and positioning of ribosomal proteins and mRNA during translation. rRNA plays a crucial role in the process of protein synthesis within cells.

Inducible: usually off for protein synthesis but can be turned on Non inducible, or REPRESSIBLE : usually on for protein synthesis but can be turned off Inducible: usually off for protein synthesis but can be turned on Non inducible, or REPRESSIBLE : usually on for protein synthesis but can be turned off

Acetylcholine is a neurotransmitter that is released in the synaptic cleft and goes over the sarcolemma down the tubule and promotes the release of calcium from the sarcoreticulum which then binds to proteins on actin which exposes binding spots for myosin to attach to and powerstroke causing muscle contraction.
movement, learning, memory, and sleep.

Benedict's solution is most commonly used for testing if sugars are present in any enzyme, or solution, that contains starch.

ex. Water

+

Starch

Then test for sugars with benedict's.

A nucleotide is made of a phosphate, a sugar and a nitrogenous base. In RNA the sugar is ribose and in DNA it is deoxyribose. The bases in DNA are A, T, G and C. The T is replaced by U in RNA.

Probably the most common of the signal transduction pathways is through the use of G proteins. These proteins are found with three subunits. When activated by a GPCR, or a G Protein-Coupled Receptor, they drop off bound GDP and pick up GTP and the subunits separate. G-alpha will help phosphorylate other proteins which end up amplifying the signal. This leads to many signaling pathways.

The electrical current used to move the DNA delivers electrons to the cathode, the negative end from which DNA moves away.

The electrons are taken up by water, resulting in the equation

H2O + 2e- -> 1/2 H2 + OH- [the hydrogen ion is donated an an electron, forming hydrogen gas]

On the other side, the anode, to balance the charges caused by the electrons delivered to the cathode, water loses electrons by the equation

H2O -> 2H+ 1/2 O2 [the oxygen anion loses electrons, forming oxygen gas]

air bubbles form from those gases

Autotrophs are organisms that can produce their own food through photosynthesis or chemosynthesis. They use energy from sunlight or chemicals to convert inorganic substances into organic compounds, such as carbohydrates. Examples of autotrophs include plants, algae, and some bacteria.

The chemical reaction is caused by the conflict of the sulphur from the yolk and the chemicals in the albumen in the white. This is why hard-boiled eggs get that very unappetizing green ring between the white and yolk.

The end products of glycolysis are two molecules of pyruvate, two molecules of ATP (net gain), and two molecules of NADH.

Yes, most living organisms are around 70% water. Water is essential for life as it plays a crucial role in various biological processes such as nutrient transport, temperature regulation, and waste removal.

At a neutral pH i.e. pH 7, only five of the twenty common amino acids carry a net positive or a net negative charge.

Aspartic acid and Glutamic acid are negatively charged (-1), at a neutral pH the carboxlic side chains lose a H+ ion

Lysine, Arginine and Histidine are positively charged (+1), at a neutral pH the side chains accept a H+ ion.

All other amino acids are generally uncharged (0). It is therefore easy to work out the net charge of any sequence. All sequences contain the one letter abbreviation for each amino acid.

Here the sequence is "aggdrleeq"

a=alanine (uncharged = 0)

g=glycine (uncharged = 0)

g=glycine (uncharged = 0)

d=aspartic acid (negatively charged = -1)

r=arginine (positively charged = +1)

l=leucine (uncharged = 0)

e=glutamic acid (charged = -1)

e=glutamic acid (charged = -1)

q=glutamine (uncharged = 0) Add up all the charges -3, +1 gives a total peptide charge of -2.

The endoplasmic reticulum (ER) is a network of membrane-bound tubules and vesicles found in the cytoplasm of eukaryotic cells. It plays a key role in protein and lipid synthesis, as well as detoxification processes. There are two types of ER: smooth ER, which is involved in lipid synthesis, and rough ER, which has ribosomes attached to its surface and is involved in protein synthesis.

Trace elements like iodine, zinc, copper, and selenium make up less than 0.01% of body mass but play essential roles in various biochemical reactions and processes. While they are present in small amounts, they are crucial for maintaining overall health and normal bodily functions.

Energy is stored in ATP through the high-energy phosphate bonds between its phosphate groups. When one of these bonds is broken through hydrolysis, energy is released that can be used in cellular processes.

Glycine is separate from other amino acids because it is the simplest amino acid, with only a hydrogen atom as its side chain. This makes it unique in terms of structure and properties compared to other amino acids, which have more complex side chains. Glycine also plays important roles as a neurotransmitter and in protein synthesis.

To store energy

Depends where. In general though, lipids is mostly used as a barrier. In animals, it adds layers to skin. In cells, it is the main component of the cell membrane. In most species, lipid is merely an energy backup as glucose (sugars) are the primary source of energy in living things.

They may contain some, but not as much as when they were green or partially ripened. Certain enzymes in bananas are converted to sugars during the ripening process, which is what makes them sweeter and softer as they ripen.

Farming practices such as crop rotation, cover cropping, no-till farming, and precision agriculture can increase photosynthesis. These practices help improve soil health, nutrient availability, and water retention, which can enhance plant growth and ultimately increase photosynthetic activity. Additionally, using organic fertilizers and reducing the use of chemical pesticides can also support healthier plants and higher photosynthesis rates.

Antigenicity refers to the ability to specifically bind to an antigen receptor on the immune cells, while immunogenicity involves triggering an immune response. Not all molecules that can bind to the receptor are capable of initiating a strong enough response to be considered immunogenic. Factors such as size, complexity, and the presence of specific epitopes play a role in determining immunogenicity.

Monosaccharides are simple sugars that consist of a single sugar unit. They are water-soluble, have a sweet taste, and are the building blocks of more complex carbohydrates. Monosaccharides can be classified based on the number of carbon atoms they contain, such as triose, tetrose, pentose, and hexose.

When a highly electronegative atom is attached to a less electronegative atom, then the former one attracts the shared pair of electrons towards itself.

Such a molecule is polar molecule.

Polarity of molecule means the product of charge on molecule and the distance between the atoms.

Water is a polar molecule because it has a slight negative charge on the oxygen atom and a slight positive charge on the hydrogen atoms due to differences in electronegativity. This uneven distribution of charge creates a dipole moment in the molecule, making it polar.