1the effect of temperature on photosynthesis was investigated using the apparatus
shown in figure 1.
ot write in this area
do not write in this =
pondweed
in test tube
light
light meter
figure 1
(a) complete the equation for photosynthesis.
light
carbon dioxide + water –
water chlorophyll
glucose
sc
+ oxyger
(b) the pondweed was placed in a test tube of water at 10°c.
the number of bubbles of gas produced by the pondweed in three minutes was recorded.
this was repeated with water at different temperatures.
the light intensity was kept constant for each temperature.
(i) state why the light intensity absorbed by the pondweed is not the same as
the light intensity measured by the light meter.
(ii) give two ways of improving this investigation.

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.)

Refer to the family pedigree shown here. in generation i, one parent is affected by the gene mutation and one parent isn't. in generation ii, all three children are affected by the gene mutation. what can you conclude about this gene mutation? a. all children born in future generations will be affected by this disorder. b. this gene mutation is a dominant disorder. c. this gene mutation is a recessive disorder. d. the generation i mother is a carrier of this gene mutation.

Which of the following is the function of the nociceptors? a. detecting odors in the nose b. detecting painful stimuli c. detecting central body temperature d. detecting touch and pressure