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Kitty [74]
3 years ago
8

During the contraction of a vertebrate skeletal muscle fiber, calcium ions _____.

Biology
1 answer:
vodomira [7]3 years ago
6 0
During the contraction of a vertebrate skeletal muscle fiber, calcium ions "<span>bind with troponin, changing its shape so that the myosin-binding sites on actin are exposed."

Hope this helps!</span>
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Formal wear can be colourful. True or False<br>​
nikklg [1K]

Answer:

True

Explanation:

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What are resources a living thing needs to survive? Are these resources limited or unlimited?
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The basic resources a living organism needs to survive are sustinence, shelter, and heat. Sustinence is not an unlimited source and wild animals have to hunt to get their food, and if they hunt too much, the food chain will fall out of balnce to where there is no more of that species.

Shelter or safe homes can also be limited, from animals that find natural spots, or make their own homes out of resources, it can be difficult to not be constantly exposed to the natural environment.

Heat is dependant on climate, and is provided by the sun. Nonetheless, in the winter, it isn't reliable, and in the summer, animals may overheat. In conclusion overall, all of these resources are limited or depending on such circumstances.

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3 years ago
What chemical formula reflects the diagram
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3 years ago
Although the Cell Theory is widely accepted and well supported, what might happen to cause it change?
Sliva [168]

Answer:

By doing more research.

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The cell theory change with the passage of time by doing more research about the cell. The final modification of the cell theory done by Rudolf Virchow in 1855 on the basis of his new research and findings about the cells.    With the passage of time, modification occurs in microscope which enable the scientists to find different parts, organelles and features of cell on the basis of which scientists modify cell theory with the passage of time.

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3 years ago
You have an ecosystem with the following organisms: birds, fruit trees, tigers, and monkeys. Which list would best describe the
Paraphin [41]
<h2>Answer:</h2>

The priority list will be like this

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<h2>Explanation:</h2>

In an ecosystem, producers are the first level of the food chain. And we know that plants are producers because they produce their own food. So, fruit trees will be at the beginning of the food chain. After producers comes the primary consumers. Primary consumers are animals that feed on producers. Both birds and monkeys feed on fruit trees, so they are the next in line after fruit trees. Finally, secondary consumers eat primary consumers. As tigers eat animals i.e monkeys etc so they are secondary consumers, and thus they are last on the food chain list.

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