Answer:
I feel like you need a picture or graph for someone to answer this question. Being helpful, I'll guess some possible answers.
Nutrient or water shortages
Environment issues
Disease
Explanation:
Answer:
c. Tip links open ion channels, which causes membrane depolarization.
Explanation:
Mechanically gated cation channels are present in the membrane of stereocilia. The tip link proteins connect these cation channels to the tip of the tallest stereocilium neighbor. The vibration of the basilar membrane leads to the opening of these cation channels to allow the entry of cations (primarily K+) into the cytosol of hair cells. The entry of cations generates depolarizing receptor potential.
The vibration of the basilar membrane makes the stereocilia to bend towards the tallest stereocilium. This results in stretching of tip links and the opening of cation channels in the adjacent shorter stereocilia to allow entry of the large amounts of K+ and Ca2+ into the hair cells. The result is graded depolarization.
Answer:
True
Explanation:
It sharea all of the characteristics of a cell, including the ability to divide and make more copies of itself.
Cinder cones derive their name from their steep sides, which give them a cone-like appearance. The angle of their slopes may be as steep as 35 degrees, although older, eroded cones have softer slopes. Cinder cones are small compared to other types of volcanoes. They average 100 to 400 meters in height (325 to 1,300 feet), while composite volcanoes may reach 3,500 meters (11,500 feet) and shield volcanoes can range as high as 8,500 meters (28,000 feet) -- the height of Hawaii's Mauna Loa, the world's largest, as measured from the ocean floor to its top. Most cinder cones are monogenetic, which means they erupt only once. Their eruptions tend to be relatively weak compared to those of larger volcanoes. Cinder cones often form as parasite cones along the flanks of larger volcanoes. They are formed by Strombolian eruptions, when gas forces steaming lava upwards into the air. The lava cools and falls to the earth as pebbles, which build up around the vent that ejected them, forming a cone. These parasite types of cone volcanoes usually occur in groups. Shifts in the position of the vent result in twin cinder cones. Variations in the power of eruption create nested cones. Not all cinder cones are found in groups; some are separate entities formed on basaltic lava fields.
