carrier moves solute through a membrane up its concentration gradient, uses ATP molecule. A) active transport
B) Facilitated diffusion
C) Antiport
D) Symport

Me with biology endocrine system crossword also image left i need with hw

How energy flows through each level in this energy pyramid. is all the matter and energy from one level transferred to the next level?

Which of the following factors would not contribute to allopatric speciation? a) a population becomes geographically isolated from the parent population.b) the separated population is small, and genetic drift occurs.c) the isolated population is exposed to different selection pressures than the ancestral population.d) different mutations begin to distinguish the gene pools of the separated populations.e) gene flow between the two populations is extensive.