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steposvetlana [31]
3 years ago
12

6. The diagram shows a complete circuit with a battery and a buzzer making

Biology
1 answer:
marin [14]3 years ago
4 0
think the Answer is h
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A second action potential cannot be generated until ________.
Bingel [31]

Answer:

"Action potential is a rapid rise and subsequent fall in voltage or membrane potential across a cellular membrane with a characteristic pattern."

It is the mode through which a neuron transports electrical signals.

Explanation:

  • Option - (a) is the best choice to choose from,
  • <u>The refractory period :</u>

A second action potential cannot occur until the membrane has recovered or reestablished, this is the refractory period. The absolute refractory period coincides with inactivation of voltage-gated sodium channels which makes it impossible to generate another nerve impulse.

5 0
3 years ago
Explain about the temperate forest biome. Explain how the organisms in cold forests biome adapt to their environment. Also expla
antiseptic1488 [7]

Answer:

In winter, the forest is extremely cold. The roots of the evergreen plants are unable to access water. The needle-like structure of these trees minimizes water loss from transpiration. The needles are also dark in color. The color allows them to absorb maximum sunlight for photosynthesis. Even with little food, the animals in the biome can access food from these trees. Squirrels can eat the seeds from the pinecones. Crossbill birds have special beaks that allow them to access the seeds. Moose eat sappy twigs. They’ve also adapted to build fat reserves to help them survive the harsh winter. Some animals hibernate, and others migrate to warmer places to survive the winter. During summer, the long days allow abundant photosynthesis. So, there’s increased plant growth accompanied by increased insect activity. Trees with seasonal leaves develop new leaves. Birds that had migrated return during the summer, when food is readily available. The plants and animals work as a system to obtain an adequate food supply throughout the year.

Explanation:

6 0
3 years ago
What happens to the vitamin c in a potato when it is processed into other products?
neonofarm [45]

The Vitamin C will probably get decreased due to the food it is processed by.

5 0
3 years ago
Mitochondria are thought to have evolved from ancient bacteria. which characteristics of a free-living bacteria have mitochondri
olganol [36]

Mitochondria are thought to have evolved from ancient bacteria. Free-living bacteria have lost motility in mitochondria over time.

<h3>What is endosymbiosis?</h3>
  • Endosymbiosis is the term used when one organism truly lives inside the other. According to the endosymbiotic theory, it is simple for a big host cell and ingested bacteria to become dependent on one another for survival and develop a long-term bond.
  • Due to their increased specialization through millions of years of evolution, mitochondria and chloroplasts can no longer survive outside of cells.
  • Chloroplasts and mitochondria are remarkably similar to bacterial cells. They have unique DNA that is distinct from the DNA found in the cell's nucleus.
  • Additionally, these organelles synthesize numerous proteins and enzymes necessary for their functions using DNA. Both mitochondria and chloroplasts are surrounded by a double membrane, which is additional proof that each was ingested by a primitive host.
  • Similar to bacteria, the two organelles also divide by themselves and replicate their own DNA.

Learn more about the endosymbiosis with the help of the given link:

brainly.com/question/15829977

#SPJ4

4 0
1 year ago
A child is born with downsyndrome when did the mutation occur
Reil [10]
It occurred during meiosis.
just took the test, hope this helps:)
4 0
3 years ago
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