0
What else can I help you with?
Which describes the process through which certain genes within a cell are activated to produce proteins while others are not?
gene expression
What is the process of producing certain proteins at certain times called?
The process of producing certain proteins at certain times is called gene expression. Gene expression involves the transcription of genes into messenger RNA (mRNA), followed by translation of mRNA into proteins. This process is finely regulated by various factors to ensure that proteins are produced when and where they are needed in the cell.
How does pepsin function in the stomach during the process of digestion?
Pepsin is an enzyme that breaks down proteins in the stomach. It is produced in an inactive form called pepsinogen, which is activated by the acidic environment in the stomach. Once activated, pepsin starts breaking down proteins into smaller molecules called peptides, which can then be further digested by other enzymes. This process helps the body absorb nutrients from proteins in the food we eat.
What is The binding of complement proteins to certain sugars or proteins on a foreign Cell's surface?
Opsonization is the process where complement proteins bind to sugars or proteins on a foreign cell's surface, which marks the cell for destruction by phagocytic cells like macrophages and neutrophils. This process enhances the immune response against the foreign cell, helping to eliminate it from the body.
What statement describes the central dogma of molecular biology?
The central dogma of molecular biology describes the flow of genetic information within a biological system. It summarizes the process by which DNA is transcribed into messenger RNA (mRNA), which is then translated into proteins. This framework illustrates the relationship between genes and the functional proteins they encode, emphasizing that information is transferred from nucleic acids to proteins, but not in the reverse direction.
What best describes gene expression?
Gene expression is the process by which information from a gene is used to synthesize a functional gene product, such as a protein. It involves the transcription of a gene into mRNA and its translation into a protein. Gene expression is tightly regulated and plays a critical role in determining the function and behavior of a cell.
How do complement proteins cause foreign cell lysis?
Complement proteins cause foreign cell lysis through a process known as the complement cascade, which is initiated when these proteins are activated in response to pathogens. Once activated, they form a membrane attack complex (MAC) that inserts itself into the foreign cell's membrane, creating pores. These pores disrupt the osmotic balance of the cell, leading to an influx of water and ultimately resulting in cell swelling and lysis. This mechanism helps eliminate pathogens from the body effectively.
What describes a way proteins behave in a facilitated diffusion?
In facilitated diffusion, proteins called carrier proteins or channel proteins help facilitate the movement of specific molecules across the cell membrane. These proteins act as gates or tunnels that allow the molecules to pass through the membrane, but the process does not require energy as it follows the concentration gradient.
What is the gastric enzyme that breaks down proteins into smaller polypeptides?
The gastric enzyme that breaks down proteins into smaller polypeptides is pepsin. It is produced in the stomach and activated from its precursor, pepsinogen, in the acidic environment of gastric juice. Pepsin plays a crucial role in protein digestion by cleaving peptide bonds, facilitating further breakdown of proteins in the digestive process.
What word describes the process by which humans allow certain organism to mate in order to pass along desirable traits?
A breading program.
Do proteins code for genes in the process of genetic expression?
Yes, proteins do not code for genes in the process of genetic expression. Genes code for proteins through the process of transcription and translation.
What do polar bodies use to self destruct in meiosis?
Polar bodies undergo apoptosis, a process of programmed cell death. This process is initiated when certain signaling pathways are activated, leading to the fragmentation and death of the polar bodies.
