Biología preguntas y respuestas

Si usted desea construir bacterias recombinantes que expresen una proteina humana, debe entonces: cortar el gen nuclear y un plasmido bacteriano con la misma enzima de restricción generar millones de copias del gen nuclear usando la técnica de PCR obtener un cDNA a partír del mRNA de la proteina usando transcriptasa reversa

Explain why (in terms of trophic levels and energy movement) most life on Earth is essentially "solar-powered".

a. To cause cancer, proto-oncogenes require allele(s) to be mutated and therefore are considered

4. El padre de la genética moderna fue a- William Batenson. b- Gregor Johann Mendel.

El señor y la señora González tienen 6 hijos, tres de ellos tienen el lóbulo de la oreja pegado (carácter recesivo) como su padre y tres lo tienen libre como su madre. ¿Cuál es el genotipo de los padres?

Tonicity refers to the concentration of a solution in comparison with a living cell. Match each tonicity with the description of its concentration and effect on a cell. Prompts solute concentration in the environment is too high. This causes water to flow out of the cell, leaving it shriveled. Solute concentration in the environment is too low. This causes water to flow into the cell, where this expansion could potentially cause it to burst. solute concentration within a cell is equal to match its environment. Water flows in and out equally, so the cell remains healthy. Select match

- Du kannst erklären, dass alle Lebewesen Luft zum Atmen brauchen. - Du kannst nennen, aus welchen Gasen die Luft hauptsächlich besteht. - Du kannst beschreiben, wie dein Körper Luft aufnimmt und Sauerstoffnutzt. - Du kannst Beispiele nennen, was man mit Luft machen kann.. - Du kannst erklären, wie der Seewind entsteht und den Kreislauf zeichnen. - Du kannst die verschiedenen Windstärken \( (0,5,10,12) \) benennen. - Du kannst sagen, welche Dinge die Luft verschmutzen und was du tun kannst, um die Luft zu schützen.

8. The ABO blood groups in humans are expressed as the \( I^{A} \), \( I^{B} \), and \( i \) alleles. The \( I^{A} \) allele encodes the A blood group antigen, \( I^{B} \) encodes B , and \( i \) encodes O . Both A and B are dominant to O. If a heterozygous blood type A parent \( \left(I^{A}\right) \) and a heterozygous blood type B parent \( \left(I^{B} i\right) \) mate, one quarter of their offspring are expected to have the AB blood type ( \( \left.I^{A} I^{B}\right) \) in which both antigens are expressed equally. Therefore, ABO blood groups are an example of: 1. multiple alleles and incomplete dominance 2. codominance and incomplete dominance 9. incomplete dominance only 4. multiple alleles and codominance

QUESTION 2 collections of lymphoid tissue (MALT) that guard mucosal surfaces include all of the following except appendix follicles tonsils peyer's patches the thymus

QUESTION 1 the lymphoid organ that functions primarily during youth and then begins to atrophy is the spleen thymus bone marrow palatine tonsils