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Ad libitum [116K]
3 years ago
8

What action is directly responsible for the generation of an action potential at the sarcolemma?

Biology
1 answer:
Over [174]3 years ago
7 0

Answer:

Nervous stimulus action for muscle contraction

Explanation:

Nerve stimulation is sent to the sarcolemma, which are motor nerves at the neuromuscular junction (junction between the terminal part of a motor axon with a motor plate), after which nerve endings implant in the sarcolemma and form plaque on the surface of muscle fibers, which in turn transmit stimulus to the musculature.

Then, an electrical current (from the stimuli) is generated, it propagates through the muscle cell membrane, reaches the cytoplasm and triggers the muscle contraction mechanism.

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The bird in the photo is resting on the bison to cross the river. It's also utilizing the bison as a safety place for any alliga
miv72 [106K]

Answer:

commensalism

Explanation:

Commensalism is a symbiotic relationship in which one species benefits from the interaction and the other species is neither harmed nor helped. So the bird is being helped and the bison is being neither harmed nor helped.

P.S. Can you mark me Brainliest please?

3 0
3 years ago
Karen is a forensic scientist whose purpose is to identify and evaluate physical evidence. Which of the following tasks does she
Gwar [14]

Answer: A. reporting results of scientific analysis.

A physical evidence, also called real evidence. It is a tangiable evidence, which can be touched, picked and collected from the scene of crime or any other place. It can be used to prove a crime has occurred. Physical evidences includes fingerprints, footprints, fibers, paint and building materials.

A specimen sample is taken from the suspects or victims and compared with suspected samples obtained from the scene of crime. The comparitive analysis of physical evidences can be used as a scientific evidence against criminal.

Therefore, reporting results of the scientific analysis is the task she should perform.

3 0
3 years ago
During metamorphosis, a tadpole's tail is reduced in size by the process of ______. A. regeneration B. apoptosis C. oxidative ph
jolli1 [7]

The process of apoptosis, I believe, is when the tadpole's tail is reduced in size during metamorphosis.

In most animal phyla, metamorphosis actually takes place in conjunction with morphological, ecological, and physiological changes.

Marine invertebrates' larva behaves as a drifting tiny creature in the ocean, expanding its habitat distribution to find the best location for its survival.

When muscle cells undergo apoptosis, which is the final stage of their metamorphosis, they are split into membrane-bound muscle fragments and consumed by macrophages.

As a tadpole becomes a frog, apoptosis occurs. The cells in its tail are induced and it will be lost.

<em />

<em>Image: Metamorphosis of a frog

</em>Learn which protein is responsible for initiating apoptosis in the cytosol of the target cell: brainly.com/question/28275150

#SPJ4

7 0
1 year ago
How are adaptations related to natural selection?
kolbaska11 [484]
I thinks it’s D but not sure
8 0
3 years ago
Why are architects and engineers concerned about surface waves
Ainat [17]

Answer:

Because they are the most destruction waves

Explanation:

Surface waves travel just below the earth’s surface.  Examples of surface waves are Rayleighs and Long waves. Rayleighs cause ripples on the ground while long waves move the ground horizontally perpendicular to the direction of travel of the wave. Therefore, these waves are capable of destroying the foundations of structures and hence causing their collapse. Studying these waves allow these professionals to design foundations strong enough to withstand these waves.

5 0
3 years ago
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