Answer:
The plus end for all actin filaments.(Ans. A)
Explanation:
All three types of muscles (cardiac, smooth, and skeletal) utilize actin filaments to generate force which leads to cell contraction. Actin filaments is organized into sarcomeres which function as the fundamental unit of contraction.
Sarcomeres are approx 2.4 micro meter in length, and they are bounded at both end with the help of Z-disks. Plus end of the Z-disks are oriented with actin filaments and their minus ends to the direction of center of the sarcomeres. Z-disk consist an actin capping protein, which is known as cap-Z. Cap-Z helps to bind plus end of the actin filaments.
TEM is a microscope that uses an electron beam. A transmission electron microscope is best for the study of structures smaller than cells.
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TEM (Transmission Electron Microscope):</h2>
- It is a large microscope that uses an electron beam instead of light.
- It gives the highest resolution(0.2 nm) of available microscopes.
- It has the highest magnification power (1000000) of very tiny organelles.
Therefore, a transmission electron microscope is best for the study of structures smaller than cells.
Learn more about TEM:
brainly.com/question/550209
The main role of an indicator is to establish the equivalence point when two substance has reached its neutralization process. The purpose of an indicator is to determine how acidic or basic the product or solution is. Indicator solutions work by actually reacting with the components of food that they test for, creating a new substance of a different color. This is a chemical reaction.If the substance that they test for is not present in the food, there will be no reaction, and therefore no color change. The test strips will be more likely to be dark blue or black for Grape, Tomato, Summer squash, Orange Bell pepper as they all contain starch. Color intensity may vary depending on the level of starch found in the samples.
