They are single-celled organisms is false as plants are multicellular.
Gravity
Plant roots always grow downward because specialized cells in root caps detect and respond to gravity. This is an example of a tropism. A tropism is a turning toward or away from a stimulus in the environment. Growing toward gravity is called geotropism.
<span>Echocardiography with doppler flow can show numerous abnormalities, including ventricular hypertrophy, dilation of heart chambers, and abnormal heart wall motion. Place patient in a supine position on their left side facing the equipment. Instruct the patient about the procedure. Inform the patient about sensations that may occur, like pressure and the mechanical movement from the head of the transducer. There are no contraindications to the procedure.</span>
Answer:
Hope the above picture might help you :)
Explanation:
<u>-how long it takes for the voltage-gatedNa+ channels to close at the end of an action potential</u>
Neurons have unique structures which aid in facilitating communication by sending and receiving electrical signals very efficient.
The refractory period describes a period between the initiation of an action potential where Na+ channels are closed, and immediately after the action potential’s peak. Action potentials would require an influx of more positively charged ions; these must be more than a specific threshold in order to have the cells send along more action potentials which helps with figuring out stimulus intensity.
Potassium ions readily diffuse out of the cell more quickly than sodium due to the presence of more channels which allow for potassium leakage. The sodium pumps in neuronal membranes bring more Na+ than K+ ions into the cell; with every three sodium ions pumped out two potassium ions are brought in- this is in order to maintain the negatively charged membranes within the cell along with the resting potential.
Learn more about the autonomic nervous system at brainly.com/question/10386413
Learn more about neurotransmitters at brainly.com/question/9424160
Learn more about homeostasis at brainly.com/question/1601808
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