Exchanges of Substances with the Environment Random Retrieval

Which of the following is evidence against the mass flow hypothesis?

At the sink, solutes are removed from the phloem, what effect does this have on water movement?

Which would not increase the volume of water transpired by the plant?

Water molecules stick together due to what type of bond?

What is the stroke volume of a patient if their cardiac output is 3500 cm³ min^-1, and their heart rate is 70 bpm?

Does this bar cart show a correlation between number of cigarettes smoked, and the risk of CVD?

As blood moves away from the heart, it travels in which type of blood vessel?

In the diagram of the human circulatory system, which letter represents the Vena Cava?

In which direction ( if any), would a curve be for humming bird haemoglobin?

What is it called, when Carbon Dioxide causes the dissociation curve to shift?

Which term describes that guard cells when the plant has plenty of water available?

Which number represents a layer which is 2 or 3 times thicker in desert plants?

Which number represents cells that can control water loss?

Emphysema is caused by what?

If someone's PVR is 1.5dm³ min ^-1, and their tidal volume is 150 cm ³, how many breaths do they take in a minute?

Cresol red is an indicator which goes clear at a low pH. A plate of agar jelly with cresol red added was made, and two blocks were cut out. Block A measured 10mm x 10mm x 10mm. Block B measured 20mm x 7mm x 7mm. Are the two agar blocks a similar surface area (within 5% difference)?

Cresol red is an indicator which goes clear at a low pH. A plate of agar jelly with cresol red added was made, and two blocks were cut out. Block A measured 10mm x 10mm x 10mm. Block B measured 20mm x 7mm x 7mm. You have chosen one which will decolourise the quickest, why did you choose that block?

What is the volume of the same roughly spherical spongy mesophyll cell with a diameter of 80 µm, using the formula Volume=4/3 pi r ³?

What is the volume of the same palisde cell measuring 100 µm by 40 µm?

The surface area in biology often refers roughly to how much skin an organism has, or how much cell membrane a cell has. Which of the following will have the biggest surface area, if they are all approximately the same length and width?