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Just show how changes in DNA can ultimately produce either: - different proteins because different amino acids are chained together in a polypeptide chain, therefore changes intended cell activity. - the same proteins (remember, there usually are several equivalent triplet sequences to code...

Ie. Cytotoxic T Cells or Killer T Cells or T8 Cells (or was it T4? Heh..).

Chromosomes are made of DNA wrapped around a protein core. Note that there are two types of RNA: mRNA and tRNA. A strand of mRNA copies a sequence of DNA triplets (a sequence of three nucleotides on the DNA) when the DNA 'unzips', using complementary nucleotides floating around (note that...

Active transport uses energy to transport a substance. Passive transport doesnt. When the body's blood passes through the nephron's (a functional unit of the kidney) glomeralus (forgot how to spell it hehe), passive filtration occurs and the filtrate gets collected in the Bowman's Capsule. I...

Quantitatively, using a measure to describe a thing. Eg. That dog has 30kg mass. Qualitatively, using a description to describe the thing. Eg. That dog is fat.

I dont think its fit to say they are good or bad... Antigens are things that provoke an immune response. A use for this is immunisation, so its good. But if an antigen provokes a too great immune response (allergy), then its bad.

A DNA's triplet (a sequence of 3 nucleotides) codes for one mRNA's codon (a sequence of 3 complementary necleotides on the mRNA strand), which in turn codes for an amino acid by attracting an anti-codon at the ribosome. Many amino acids, coded from the triplets, are then linked together via...

A vaccine is a solution of weakened/dead pathogens that cannot cause disease. By injecting the vaccine (ie. vaccination) into somebody you are provoking an immune response from their body, so that they will be 'ready' (via memory T cells etc.) when the real infection comes. In most textbooks you...

Please bear in mind that electrons have a wave-particle duality nature. The electron microscope, for example, exploits this property. And the paddle wheel experiment shows cathode rays (electrons) has momentum, hence mass (not the other way around :)).

Cathode rays are beams of electrons, not light.

The stopping voltage retards the photoelectron, not the photon. The rate of emission shouldnt be affected? (Im not sure) The intensity of light is the number of photons. Thus, intensity affects how many photoelectrons are emitted (remember one photon can only dislodge one electron - 'all or...

So basically, what you want to do is convert the whole integral with "x" (or another pronumeral) to an integral with "u" (etc.). You are usually given what substitution is to take place, so you take that and work with it. Differentiate etc. until you get everything you need to completely replace...