It permits calcium to leave the sarcoplasmic reticulum and enter the cytosol. During muscle contraction, the binding of acetylcholine initiates an excitatory impulse, which is transmitted to the deep of the muscle via T tubules. T tubules are the invaginations of cell membranes of muscle cells (sarcolemma). When the action potential travel down the t-tubules, they change shape and allow the calcium ions to enter into the sarcoplasm from the sarcoplasmic reticulum.
The answer to this question is E. all of the above.
In all of these situations, it is necessary for you to use your headlights to ensure your safety and your ability to see the road in front of you.
Hope this helps!
Light positioning include;
1. Extrinsic muscles.
2. Pupil.
3. Accommodation.
4. Cornea
5. Ciliar bodies.
Sensory processing include;
1.Photoreceptor.
2. Occipital cortex.
3. Bipolar cells.
4. Ganglion cells.
5. Amacrine cells.
Answer:
D) 5'-ATGC-3' with 5'-GCAT-3'
Explanation:
In a double helix DNA, adenine always pairs with thymine and cytosine pairs with guanine. Also, the two strands of a double helix DNA are antiparallel, that is, the 5' end of one strand lies opposite to the 3' end of another strand.
Therefore, a DNA strand with base sequence 5'-ATGC-3' would have a complementary strand 5'-GCAT-3'.
Double stranded DNA: 5'-ATGC-3'
3' TACG 5'
