A neuron's repetitive firing rate is limited by an absolute refractory period, during which a new action potential cannot be generated. Which event is chiefly responsible for this limit?

Where does carbon dioxide fixation occur in a plant cell

What is a group of tissue that work together

The gametophyte of a liverwort produces sperm in a structure called a (n) sorus. sporangium. archegonium. antheridium. 75. Mosses transport water and nutrients wi

Which of the following is a type of skeleton? a) exoskeletons b) internal skeletons c) fluid filled body cavaties d) all of the above

The nurse is caring for a patient who has lymphatic obstruction. which complication does the nurse monitor for in the patient?

Why do constellations in the night sky change seasonally? A. Earth rotates around its axis. B. Earth revolves around the sun. C. Earth moves closer to the moon. D. Earth tilts on its axis. 5 / 9 0 of 9 Answered

Which of the following could result from an algal bloom in a river?

A common element among all the river valley civilizations was: irrigation systems that moved water to crops and settlements developed plumbing systems developed written materials the worship of leaders as God's

A person's skin cells and eye cells make different types of proteins to perform their functions. What is the source of the instructions from which all of the proteins are made? (A) Genes (B) Mitochondria (C) Ribosomes (D) Gametes

Small masses of neuron cell bodies located outside the cns are called?