- Does ADH increase or decrease the permeability of the distal tube & the collecting duct to water? What leaves the tubules by osmosis into the surrounding capillary network as a result?
- What causes the the active absorption of sodium ions from the filtrate in the kidney tubules into the plasma in the capillaries?
- What inhibits the release of ADH by the pituitary gland? What remain impermeable to water, causing little or no reabsorption to occur?
- What causes an increase in the release of ADH & the conservation of water by the kidneys? What is returned to the blood, causing a small amount of concentrated urine to be produced?
- Is the mechanism by which ADH increases the permeability to water of the walls of the distal tube & collecting duct very elegant or inelegant?
- What does ADH increase in relation to the distal tube & collecting duct?
- In the series of reactions started by cAMP, what do the vesicles involved contain? What then moves through the channels out of the tubules & into the surrounding blood capillaries by osmosis?
- What are stored in vesicles ready for reuse when they're needed again when ADH levels fall?
- What is often a sign of an increase in blood volume? What does this suppress, causing an increase in the volume of water lost in the urine?
- Which enzyme acts on a protein in the blood to produce the hormone angiotensin?
- Coleoptile sections of the same length were placed in Petri dishes containing IAA solutions of different concentrations. Which method could scientists use to make a valid comparison of the elongation of coleoptiles at each IAA concentration?
- Why would the mean degree of muscle contraction decrease between 0 and 10 times of a sound being repeated, before remaining constant between 10 & 20 times of the sound being repeated?
- How may a serotonin selective reabsorption inhibitor (SSRI) being given to patients help to reduce depression?
- What can hamsters be infected with? What can cure them?
- What happens to cells in a coleoptile, after the breaking of hydrogen bonds, that allows a positive phototropism to light shining from the left?
- Where does the coloured liquid inside of a respirometer move once potassium hydroxide is replaced with water & the screw clip is closed?
- Which 2 variables need to be kept constant in an investigation studying the respiration rate in carrots?
- Where does the coloured liquid inside of a respirometer move once the screw clip is open?
- Where does the coloured liquid inside of a respirometer move once the screw clip is closed?
- Where does the coloured liquid inside of a respirometer move during anaerobic respiration, as well as potassium hydroxide being absent? Why?