Transport of materials into a cell against a concentration gradient, from low to high, requires A) water. B) energy. Eliminate C) osmosis. D) a passageway.

Buffers are chemicals that do all of the following except

What structure does an amoeba, a one-celled organism, use to movie ingest and transport materials within the cell, because it has

Which type of tumor is typically harmless? A. skin tumor B. brain tumor C. benign tumor D. malignant tumor

Is a arctic wolf a herbivore, carnivore or omnivore. (List at least 5 examples of their meals)

The blank wrote petition to king george declaring parliament couldnt pass laws on the colonists without representation by colonists

Which is produced immediately after a plant sperm cell fertilizes an egg cell? a. a zygote b. plant nutrients c. sweet nectar d. a spore

In modern classification system, unicellular organisms that contain chloroplasts and a nucleus would be considered; A) annelids B) protists C) archaea D) chordates

The northern copperhead is Agkistrodon contortrix contortrix, the southern copperhead is Agkistrodon contortrix mokasen, and the cottonmouth is Agkistrodon piscivorous. Therefore, A. all are subspecies of Agkistrodon. B.

What's a primary consumer

After plants absorb energy from the sun the energy gets converted into blank energy for the plant to carry out life activities