Hemácias foram colocadas em uma solução de concentração desconhecida, tendo, após um certo tempo, sofrido hemólise (plasmólise de hemácias). Em função deste resultado, foi possível afirmar que a solução em questão apresenta-se (a) hipotônica em relação às hemácias
(b) isotônica em relação às hemácias
(c) com alta concentração de sais
(d) atônica em relação às hemácias
(f) hipertônica em relação às hemácias

Suppose you have monohybrid pea plants in your garden and find that they produce round seed to wrinkled seeds in the ratio of 3: 1. if the allele are designated (r & r) receptively. what is the probable genotypes of the round seeds which produced f 1 ? rr & rr rr only rr & rr rr only rr only

Radiometric dating is used to tell the absolute age of materials by studying the decay rate of radioactive isotopes. the decay rates of isotopes are constant and are expressed as .

You have just sequenced a new protein found in mice and observe that sulfur-containing cysteine residues occur at regular intervals. what is the significance of this finding? it will be important to include cysteine in the diet of the mice. cysteine residues are required for the formation of α helices and β pleated sheets. cysteine residues are involved in disulfide bridges that form tertiary structure. cysteine causes bends, or angles, to occur in the tertiary structure of proteins.