PRUEBA DE QUÍMICA 148. La siguiente reacción muestra la descom- 150. Un estu
posición del peróxido de hidrógeno (H2O2):
que tor
2H₂O₂
2H2O + O2
miento
Un docente quiere estudiar esta reacción
para lo cual adiciona 10 mL de H2O2 en un
Al vaso
tubo de ensayo. Cuando el tubo se encuen-
agreg
tra a 15°C observa que la reacción termina
disue
a los 15 minutos, mientras que al calentarlo
agita
finaliza a los 5 minutos. ¿Qué variable oca-
tal a
siona el cambio de velocidad en la reacción?
has
A. La concentración de O2.
lat
B. La temperatura.
tier
C. La concentración de H2O2.
el
ca
D. El volumen.
Alv​

The dna in a cell’s nucleus encodes proteins that are eventually targeted to every membrane and compartment in the cell, as well as proteins that are targeted for secretion from the cell. for example, consider these two proteins: phosphofructokinase (pfk) is an enzyme that functions in the cytoplasm during glycolysis. insulin, a protein that regulates blood sugar levels, is secreted from specialized pancreatic cells. assume that you can track the cellular locations of these two proteins from the time that translation is complete until the proteins reach their final destinations.for each protein, identify its targeting pathway: the sequence of cellular locations in which the protein is found from when translation is complete until it reaches its final (functional) destination. (note that if an organelle is listed in a pathway, the location implied is inside the organelle, not in the membrane that surrounds the organelle.)

How do the sperm cells get from the stigma to the ovules?

What is a difference between systemic and pulmonary circulation? a. systemic circulation carries oxygenated blood to the lungs and pulmonary circulation carries deoxygenated blood to the body. b. systemic circulation carries deoxygenated blood to the lungs and pulmonary circulation carries oxygenated blood to the body. c. systemic circulation carries deoxygenated blood to the body and pulmonary circulation carries oxygenated blood to the lungs. d. systemic circulation carries oxygenated blood to the body and pulmonary circulation carries deoxygenated blood to the lungs.