What mechanisms do plants use to load sucrose produced by photosynthesis into specialized cells in the veins of leaves?

A) an electrogenic pump

B) a proton pump

C) a contransport protein

D) A and C only

E) A, B, and C

What two things is scientific thinking based on

What are the types of hormones that nonpituatary?

What happen to a raw chicken bone being put in a vinegar?

During the cell cycle, what occurs to the cell at the interphase stage? Check all that apply. The cell divides to create new cells. The cell grows. DNA in the cell is copied.

Both external and organization factors shape internal pay structures. a. True b. False

Part 1: Which substance has a higher solubility? Part 2: Explain your answer for Part 1. Julia did an experiment to study the solubility of two substances. She poured 100 mL of water at 20 °C into each of two beakers labeled A and B.

The line of 49 degrees north latitude follows a ... A. National border B. Long river C. Mountain range S. State border

Which molecule crosses the plasma membrane by diffusion? oxygen glucose enzymes all of the above

Listening for sounds within the body defines?

Which characteristic is not shared by eukaryotic cells and prokaryotic cells? A. membrane enclosed organelles B. enzyme controlled reactions C. cell membranes D. cytoplasm