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Viktor [21]
2 years ago
11

When an action potential from a motor neuron arrives at the neuromuscular junction (NMJ), a series of events occurs that leads t

o muscle contraction. What events will occur last?
Biology
1 answer:
Strike441 [17]2 years ago
8 0

Answer:

conformational change in troponin

Explanation:

The troponin complex plays an essential role in the thin filament regulation of striated muscle contraction.

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Which organelle prepares proteins for specific jobs?
oksian1 [2.3K]
Ribosomes.
Proteins are used for cellular repairing and chemical processes. Ribosomes are one of the most important organelles in the cell, mostly part of the rough endoplasmic reticulum. It manufactures enzymes such as proteins which will be utilized by many organelles in the cell. Microtubules are one, responsible for the framework and acts as a skeleton of the cell –cytoskeleton needs proteins, also cytoplasm and other organelles of the cell. For a prokaryote or a eukaryote cell to survive, they need protein.<span> Fundamentally, the cell would cease to function and possibly die</span>
8 0
3 years ago
Cite the three main types of RNA and describe briefly the function of each.
sveticcg [70]

Answer:

mRNA: Carry genetic information from DNA to protein; serve as template for protein synthesis.

tRNA: Serves as adapter molecule and deliver specific amino acid from the cell pool to the mRNA-ribosome complex.

rRNA: Structural component of ribosomes.

Explanation:

There are three types of nongenetic RNAs: mRNA, tRNA, and rRNA.  

1. The messenger RNA (mRNA) is formed by the process of transcription in the nucleus. Transcription uses template strand of DNA to specify the nucleotide sequence in mRNA. The mRNA enters cytoplasm to join ribosomes. The nucleotide sequence of mRNA serves as a template and specifies the amino acid sequence of proteins.  

2. The transfer RNA (tRNA) serves as an adapter molecule during the process of protein synthesis and binds to the specific amino acids to deliver them to the protein-synthesizing machinery. The anticodon of tRNA binds to the complementary mRNA codons.  

3. The ribosomal RNA (rRNA) serves as structural components for ribosomes. Each of the subunits of ribosomes is made up of rRNA and proteins.  

8 0
2 years ago
Which of the following items is a renewable resource?
maks197457 [2]

Answer:

C. Trees

Explanation:

Trees can be replanted and we can grow more, even though it takes a long time this still makes them a renewable source.

5 0
2 years ago
Migration, hibernation, and dormancy are all methods of
bezimeni [28]
The answer is C. Adapting to changes in the environment
3 0
2 years ago
Need help with this as soon as possible
NeX [460]

Answer:

1) What kind of organisms have this organelle?

->eukaryotic

2)What is the name of the organelle?

->mitochondria

3)Reactants

->oxygen, glucose

4)Products

->carbon dioxide, water, ATP

5)Energy source

->glucose

hope this helps :)

6 0
2 years ago
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