« previous next »

Author Question: Movement of phloem sap from a source to a sink A) occurs through the apoplast of (Read 717 times)

Hungry!

  • Hero Member
  • *****
  • Posts: 1,071
on: Aug 13, 2013
Movement of phloem sap from a source to a sink
A) occurs through the apoplast of sieve-tube elements.
B) depends ultimately on the activity of proton pumps.
C) depends on tension, or negative pressure potential.
D) depends on pumping water into sieve tubes at the source.
E) results mainly from diffusion.


curlz

  • Hero Member
  • *****
  • Posts: 538
Reply #1 on: Aug 30, 2013
Pick B, i got it right :P


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Long-term mental and physical effects from substance abuse include: paranoia, psychosis, immune deficiencies, and organ damage.

Did you know?

More than 2,500 barbiturates have been synthesized. At the height of their popularity, about 50 were marketed for human use.

Did you know?

It is important to read food labels and choose foods with low cholesterol and saturated trans fat. You should limit saturated fat to no higher than 6% of daily calories.

Did you know?

Illness; diuretics; laxative abuse; hot weather; exercise; sweating; caffeine; alcoholic beverages; starvation diets; inadequate carbohydrate consumption; and diets high in protein, salt, or fiber can cause people to become dehydrated.

Did you know?

Hippocrates noted that blood separates into four differently colored liquids when removed from the body and examined: a pure red liquid mixed with white liquid material with a yellow-colored froth at the top and a black substance that settles underneath; he named these the four humors (for blood, phlegm, yellow bile, and black bile).

Calcium Carbonate, an Important Carbon Sink Calcium Carbonate, an Important Carbon Sink
Cross-sectional data showing that the amount of effort spent on personal health care increases with Cross-sectional data showing that the amount of effort spent on personal health care increases with
Young adults increase in self-esteem between the ages of 18 and 25, according to this longitudinal s Young adults increase in self-esteem between the ages of 18 and 25, according to this longitudinal s
The proportion of obese and extremely obese adults in the United States has increased over the past The proportion of obese and extremely obese adults in the United States has increased over the past
Cultural Variations in the Strange Situation Across cultures, most toddlers exhibit secure attachme Cultural Variations in the Strange Situation Across cultures, most toddlers exhibit secure attachme
A commercial eyewash station. In a medical office, the eyewash station is likely to be attached to a A commercial eyewash station. In a medical office, the eyewash station is likely to be attached to a
Video: Methods of carbon dioxide transport - carbaminohemoglobin and bicarbonate ions

For a complete list of videos, visit our video library