Biology

Large doses of antibiotics given to fight an infection are likely to destroy bacteria that produce vitamin K.

Large doses of antibiotics given to fight an infection are likely to destroy bacteria that produce vitamin K. In which digestive organ do we find such beneficial bacteria? Select one of the options be

Why is there no protein in the kidney filtrate

size of the protein molecule is too big so cannot go through the semi permeable membrane-The nephron carries out nearly all of the kidneys functions. Most of these functions concern the reabsorption a

Is anyone here a stem cell donor

Hi all, Im a registered blood donor and recently found out about stem cell donation- its something Im really keen to do, and was wondering if anyone on here has done it and could share their experien

Why does blood passing out of the tubule contain only blood cells and molecules such as proteins

i need to know whats inside of the tubule lol if they didnt tell you whast inside the tubule it must be some sort of enzyme that attaches to specific parts of red blood cells and protein molecules

Why does the function of the hormone oxytocin in the progression of labor.....

Why does the function of the hormone oxytocin in the progression of labor during childbirth illustrate a positive feedback mechanism? A. Because an increase in oxytocin level decreases the contractio

Why have we evolved into communicating mostly over the internet

Whatever happened to face to face contact? Inviting people over to your home to chit-chat? Why does it seem like we have to use electronics to talk to each other?-that wasnt a matter of evolution, it

How do muscles repair themselves

Hello, Im in AP bio, and my teacher is asking a question on the repairing of muscle cells when extending your legs 2 in. He made us watch Gattaca which there was a scene on this. Please any long answe

What is an advantage of growing bacteria on a jelly such as agar rather than in a broth

Bacteria ae moe easily identified because of their colony morphology, which cannot be distinguished in a broth.-Agar plates keep the bacteria controled and is easier to see. also Agar is easily destro

If a girl has large breasts, does that mean she is probably over 18

Some girl asked me to buy her a bottle of wine and said that the shop wouldnt serve her because she didnt have any ID and they dont serve you if you look under 21 (18 is the legal age for buying alcoh

How do living organisms ensure their life reactions are spontaneous and take place at ambient temperatures

Enzymes (biological catalysts) are used which lower the activation energy for the reactions and permit them to take place at lower temperatures.

Leading strand and lagging strand

I know that the DNA is replicated in a 5´ > 3´ direction.. However, I dont understand why there has to be a lagging strand.. Cant both sides be replicated in a 5´ > 3´ direction at the same time? Aren

Does anyone know what the process of cross-counter exchange is and if so what is its importance

Just wondering i heard people talk about it.-Counter-current flow between two fluids allows a greater amount of exchange than parallel flow. Think about the flow of blood through a fishs gills. The b

Eye color loci in humans has 2 alleles(b,B) & genotype f(bb)=.36 what is freq of the B allele

It is in Hardy weinberg equilibrium as well. I know the answer is .40, but I just dont know how to come about getting that answer...-If fr(bb) = 0.36, then fr(b) = sqrt(0.36) = 0.6.According to H-W Eq

A magnified cross section view of small intestine illustrated finger like projections.

A magnified cross section view of small intestine illustrated fingerlike projections. What is their role in the process of digestion? A. Digestion of foodB. Absorption of nutrients C. Secretion of enz

How long does it take for grapes to be produced on a grapevine

normally viable seed can grow and can give grapes from 2 to 3 years of time to onward. And thegrape vines usually live between 50 to 70 years, depending on the variety.