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Biochemistry

Biochemistry is the study of the structure, composition and chemical processes in all living organisms. It covers the structures and functions of various cellular components, including proteins, carbohydrates, nucleic acids, lipids, and other biomolecules.

8,065 Questions

In humans when a new cell is formed from a sperm cell an egg cell how many chromosomes does it have?

i think 26

i think 26

46 chromosomes. The sperm cell and egg cell each contain 23 chromosomes, totalling 46. The sperm cells and egg cells are known as haploid cells or sex cells (meaning having 1 set of chromosomes). Once the sperm cell and egg cell joins, a diploid cell is formed (meaning having 2 sets of chromosomes), and a zygote begins to form. The human body contains 2 sets of chromosomes, one maternal and one paternal.

Is hydroxyl hydrophobic or hydrophilic?

Hydroxyl -OH is Hydrophilic (attracts water). This is due to the electronegativity of the oxygen atom in -OH which makes the functional group polar. This polarity attracts the also polar H2O molecule creating a hydrophilic effect.

How does metal rust?

When water gets on metal an than dries quickly, some of the water turns into rust. Think of it this way if you leave the steam in the bathroom from the shower and it finally goes away...it turns into rust.

Is biotin a vitamin or a mineral?

Biotin is a vitamin, specifically Vitamin B7. It is an essential nutrient that plays a key role in metabolism, cell growth, and the production of fatty acids.

What are nucleotides made up of?

Nucleotides are made up of three components: a nitrogenous base, a five-carbon sugar (ribose or deoxyribose), and a phosphate group. The nitrogenous base can be adenine, thymine, cytosine, or guanine.

What are the optimum conditions for enzyme activity in the human body?

Enzyme activity in the human body is optimal at a specific temperature range around 37°C (98.6°F) and a pH range that varies depending on the enzyme but is typically around neutral (pH 7). Additionally, the presence of cofactors and coenzymes, as well as appropriate substrate concentrations, are crucial for optimal enzyme activity. These conditions ensure that enzymes can function efficiently and facilitate metabolic processes in the body.

How do crystals grow?

the first stage is when certain chemicals dissolve into water, then the water starts to evaporate and the crystals form columns that normally have either 4, 6 or 8 sides. sometimes little spikes of crystal grow out of the crystals even when there's no water there.

How are proteins stabilized in the folded structure?

Proteins are stabilized in their folded structure by various interactions such as hydrogen bonding, disulfide bridges, hydrophobic interactions, and electrostatic interactions between amino acid residues. These interactions help to maintain the unique three-dimensional shape of the protein, which is crucial for its function.

If a protein contains three polypeptide chains that are held together by bonding forces what kind of structure does the protein have?

The protein has a quaternary structure.

In addition, each polypeptide chain has a primary, secondary, and tertiary structure.

The primary structure is the sequence of amino acids in a chain.

The secondary structure is the next higher level of arrangement of a chain in space, for example coiling into a alpha-helix, shaping into a beta-pleated sheet, or forming into a turn or loop.

Tertiary structure is a yet higher-level folding of the chain into its final three-dimensional shape.

Some proteins have only one chain, but if there are two or more, the combination of these chains to form the functional protein is the quaternary structure.

What is the molecular weight of alpha amylase?

O peso molecular da α-amilase varia de 10 a 210 KDa, dependendo da sua

origem. As α-amilases microbianas apresentam peso molecular entre 50 e 60 KDa

(GUPTA et al, 2003), sendo que as α-amilases bacterianas apresentam variação de

28 a 78 KDa e as α-amilases fúngicas (41 a 69 KDa) de acordo com os resultados

de diferentes autores citados por PANDEY et al (2005).

What is the role of cAMP?

Cyclic adenosine monophosphate (cAMP) is a secondary messenger that plays a key role in intracellular signal transduction. It is involved in various cellular processes such as gene expression, metabolism, and cell growth. cAMP is synthesized by adenylyl cyclase in response to extracellular signals and activates protein kinase A to initiate downstream signaling pathways.

Human body cell?

(biology) the basic structural and functional unit of all organisms; they may exist as independent units of life (as in monads) or may form colonies or tissues as in higher plants and animals

device that delivers an electric current as the result of a chemical reaction

a small unit serving as part of or as the nucleus of a larger political movement

  • cellular telephone: a hand-held mobile radiotelephone for use in an area divided into small sections, each with its own short-range transmitter/receiver
  • small room in which a monk or nun lives
  • a room where a prisoner is kept

What are the components of lipids?

Lipids are mainly composed of fatty acids, glycerol, and various other molecules such as cholesterol, phospholipids, and triglycerides. They play a crucial role in storing energy, forming cell membranes, and acting as signaling molecules in the body.

What is the structure of an amino acid?

Amino acid is consist of an amino group, attached to a carbon with a hydrogen bonded to it.

The same alfa carbon is attached to a carboxylic acid and R(alkyl group)

The general formula is as follows

NH2-CHR-COO

How does photosynthesis work?

Plants take in water and carbon dioxide, and create oxygen.

Photosynthesis, is a process that converts carbon dioxide into organic compounds, especially sugars, using the energy from sunlight. Photosynthesis occurs in plants, algae, and many species of Bacteria, but not in Archaea.

What is meiosis?

Division of cells in which four "daughter" cells are produced from one "parent" cell, each with half the genes of the parent. Meiosis is a special kind of cell division that produces haploid (1n) cells. yah

What is proteins interaction?

Protein is a very important functional molecule of life. It is because it can interact with other protein(s), ions, and nucleic acids to carry out cellular processes. The chemical communication is usually accompanied by non covalent forces such as Hydrogen bonding, wander wall's interactions adn ionic binding.

Why are organic molecules that contain oxygen atoms more soluble in water?

Organic molecules containing oxygen atoms, like alcohols and ketones, are typically polar due to the electronegativity difference between oxygen and other atoms in the molecule. This polarity allows these molecules to form hydrogen bonds with water molecules, enhancing their solubility in water.

How do you convert micrograms of reduced glutathione to nanomoles of reduced glutathione?

I can't answer this for reduced glutathion, because it is not exactly known to me what it is. So I'll try to help you on the way by answering this for the molecule: Glutathion, as it is:

The only thing to know is the molar mass of it, so here it is.

(The molar mass of reduced glutathion might be different)

Glutathion, C10H17N3O6S, Molar mass = 307.32 g/mol

1 g/mol = 1 g / 1 mol = 106 mcg / 109 nanomol = 10-3 mcg/nanomol

So: 307.32 g/mol = 0.30732 mcg/nanomol Glutathion

What is another word for pennant?

Pennant

The word has three meanings according to WordWeb

- The award given to the champion

- A flag longer than it is wide

- A long flad often tapering

Depending on the use, the other words for Pennant are:

1. Pennon

2. Streamer

3. Waft

4. Crown

What are the common structural units characteristics of ATP and DNA molecules?

ATP, a nucleotide, has

1.ribose sugar.

2.phosphate.

3.adenine base.

DNA is a polynucleotide and has

1. deoxyribose sugar.

2.phosphate.

3. adenine base

4.A double helix shape of many monomers- ATP is a single monomer

Which four vitamins and minerals are typically on Nutrition Facts labels?

The four vitamins and minerals typically listed on Nutrition Facts labels are vitamin D, calcium, iron, and potassium. These are considered nutrients of public health concern by the FDA and are mandatory to include on the label.

Why most of the gram positive bacteria cannot grow on MacConkey Agar?

Most gram positive bacteria cannot grow on MacConkey Agar because the agar contains crystal violet and bile salts that inhibit the growth of gram positive organisms. Additionally, the agar is designed to selectively isolate and differentiate gram negative bacteria based on their ability to ferment lactose, producing pink colonies.

What is glucose?

== Answer 1==

It is a carbohydrate(*)/sugar. It is in both plants as a result of photosynthesis and in the human body as well. Glucose is a sugar found in the bloodstream and is the body's main source of energy. Pure glucose is a solid, and will therefore not evaporate(**). If it is in a solution (glucose dissolved in water for instance), then the water can evaporate, but not the glucose itself. (***)

Glucose a monosaccharide (simple sugar) with formula C6H12O6 or H-(C=O)-(CHOH)5-H, whose five hydroxyl (OH) groups are arranged in a specific way along its six-carbon backbone.

Further related definitions:

Sucrose is an organic compound commonly known as table sugar, sometimes called saccharose. At room temperature it is a white, odorless, crystalline powder. The sucrose molecule is a disaccharide composed of the monosaccharides glucose and fructose, and has a molecular formula C12H22O11.

(*) A carbohydrate is any of a large group of organic compounds occurring in foods and living tissues and including sugars, starch, and cellulose. They contain hydrogen and oxygen in the same ratio as water (2:1) and typically can be broken down to release energy in the animal body.

(**) Some solids can evaporate; the process of a material going directly from the solid phase to the vapor phase (and not going through a liquid phase) is called sublimation. Frozen carbon dioxide (dry ice) undergoes sublimation; under normal temperatures and pressures, it never enters a liquid form.

(***) the author is saying that glucose is not volatile, ie won't boil away or evaporate off like water.