Place the following steps of muscle contraction in the order in which they occur. -Neuron stimulates a muscle cell -Ca2+ is released from the sarcoplasmic reticulum -Troponin moves tropomyosin protein -Action potential triggers opening of Ca2+ release channel

Chlorophyll is found in plant leaves and absorbs light from the sun to enable plants to perform photosynthesis. magnesium is an important component of chlorophyll. the concentration of magnesium ions is higher in the root-hair cells of plants than in the soil. which mechanism of ion uptake would best enable a plant to produce a steady supply of chlorophyll? osmosis diffusion passive transport active transport

Monitor and apply fix up strategies

Which of these is true for bacteria because they are prokaryotic cells? a. they can engulf body cells in order to make memory cells. b. they must invade viruses in order to reproduce. c. they are much larger than eukaryotic body cells. d. they can reproduce on their own outside of other cells.