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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

What compound is S2Cl3?

S2Cl3 is disulfur trichloride, a yellow liquid compound with a pungent odor that is used in chemical synthesis and as a reagent in organic chemistry reactions.

What is the last step in transcription?

The last step in transcription is termination, where the RNA polymerase enzyme stops adding nucleotides to the growing mRNA strand and detaches from the DNA template. This results in the release of the newly formed mRNA molecule.

What 2 things will change the shape of an enzyme and therefore stop an enzyme from working?

Denaturation caused by high temperatures or extreme pH levels can change the shape of an enzyme, disrupting its active site and preventing it from binding to its substrate effectively. Additionally, the presence of inhibitors or competitive molecules can also alter the enzyme's shape, leading to a reduction or loss of enzyme activity.

What organs do hormones travel from endocrine glands through bloodstream?

Hormones travel from endocrine glands through the bloodstream to reach target organs or tissues where they exert their specific effects. Some of the major endocrine glands that release hormones into the bloodstream include the pituitary gland, thyroid gland, adrenal glands, pancreas, and ovaries/testes.

D-glucose and l-glucose are are examples of what?

D-glucose and L-glucose are examples of enantiomers, which are non-superimposable mirror image molecules. They have the same chemical formula and bonds but differ in their spatial arrangement of atoms.

When drawing blood in a lavender tube can I use the same tube for multiple tests?

Using the same lavender tube for multiple tests is generally acceptable as long as the order of draw is followed to prevent cross-contamination between additives in different tubes. However, it is recommended to consult with your laboratory or follow specific lab protocols to ensure accurate test results.

How did Barbara mcclintock's discoveries changed our world?

Barbara McClintock's discoveries in genetics, particularly her work on transposable elements in maize, revolutionized our understanding of genetic regulation and genome dynamics. Her research laid the foundation for modern concepts of gene regulation and epigenetics. This has had a profound impact on fields such as agriculture, medicine, and evolutionary biology.

Why is there no virus kingdom?

Viruses are not considered living organisms because they cannot carry out essential life processes on their own, such as reproduction and metabolism. They require a host cell to replicate and cannot exist independently. Therefore, they are not classified within traditional biological classification systems like kingdoms.

What are properties of hydrophobic and hydrophilic?

Hydrophobic substances repel water and do not mix well with it due to their non-polar nature, while hydrophilic substances attract and bond with water molecules due to their polar nature. Hydrophobic substances tend to be nonpolar and often include oils and fats, while hydrophilic substances tend to be polar and include salts and sugars.

Budding is considered to be what type of reproductive pattern?

Budding is a type of asexual reproduction where a new organism develops from an outgrowth or bud on the parent organism. This results in genetically identical individuals and is common in simple organisms like yeast, hydra, and some plants.

The four types of nucleotides that make up DNA are named for their?

The four types of nucleotides that make up DNA are named for their nitrogenous bases: adenine (A), thymine (T), guanine (G), and cytosine (C). Each nucleotide consists of a phosphate group, a sugar molecule (deoxyribose in DNA), and one of these four nitrogenous bases.

What happens to an egg when placed into sparkling water?

When an egg is placed into sparkling water, the carbon dioxide bubbles in the water adhere to the surface of the egg, creating a fizzy layer around it. This can create a fizzy appearance as the bubbles cling to the eggshell. However, it does not have any significant impact on the egg itself.

What are two main phases of Cell division?

There are actually 5 steps of mitosis -

Steps

1: the nucleus disappears and chromosomes start to appear.

2: the chromosomes make copies of themselves.

3:the chromosomes line up in the middle of the cell.

4:the chromosomes split and are pulled to both ends of the cell.

5:the cell splits.

What are the 5 carbon sugars used in DNA?

Deoxyribose, C5H10O4. The sugar in RNA, ribose, has the chemical formula C5H10O5.

How can you calculate minimum free energy of RNA structure?

The minimum free energy of an RNA structure can be calculated using computational algorithms such as Mfold or ViennaRNA. These algorithms predict the most stable secondary structure of an RNA molecule based on thermodynamic parameters, such as base pairing and loop energies. The structure with the lowest free energy is considered the most stable and likely to occur in nature.

What are the uses of ammonia in cold store?

Ammonia is used for refrigeration in an absorption type plant use for large cold stores. The ammonia is not the refrigerant itself, this is usually water, but as means of absorbing the water vapour and returning it as a liquid to the start of the cycle. Unlike a conventional fridge that uses a compressor to do this. The advantages of ammonia cycle plants are that they have no moving parts and can be built to any size. The motive power for the system can be any source of heat which separates the water and the ammonia at the cycle start.

Radioisotopes have unstable what?

It is caused by instability of nucleus which depends upon proton-neutron ratio and cross sectional area if nucleus.

What hormone causes myxedema in the adult?

Myxedema in adults is caused by deficiency of thyroid hormone, specifically thyroxine (T4), and to a lesser extent, triiodothyronine (T3). This deficiency leads to slowing of body functions, resulting in symptoms like dry skin, hair loss, and puffiness of the face and hands.

What do the letters in ATP Mean?

ATP stands for adenosine triphosphate, which is a molecule that stores and transfers energy within cells. It plays a crucial role in various biological processes, including metabolism and cellular respiration.

What does the R stand for in RNA?

RNA is Ribonucleic Acid, so I suppose the R stands for "Ribo". This refers to the type of sugar found in the acid's backbone (Ribose).

Where in the cell does the Krebs cycle part of cellular respiration occur?

The Krebs cycle, also known as the citric acid cycle, occurs in the mitochondrial matrix of eukaryotic cells. This cycle is an important step in cellular respiration, where acetyl-CoA is oxidized to produce ATP, NADH, and FADH2.

What molecules control the cell cycle?

Cyclins and cyclin-dependent kinases (CDKs) are key molecules that regulate the cell cycle. Cyclins bind to CDKs, activating them and promoting progression through the different stages of the cell cycle. Their levels fluctuate throughout the cell cycle, helping to coordinate the timing of events such as DNA replication and cell division.

What is Genetic Comparisons?

Genetics is the science of heredity, dealing with the resemblances and differences of related subjects. For example, the differences between twins, father and son, Father and grandparents - the interaction of the genes and the environment in which they live

What function is only found in plant cells?

Chloroplasts are a cellular organelle that is unique to plant cells. Chloroplasts are responsible for photosynthesis, the process by which plants convert sunlight into energy.