Answer:
1. True
Proteins are frequently called the building blocks of life because they are found everywhere: in our cells, bones, muscles, blood, hormones, enzymes and more. It is thanks to proteins that our body has any sort of structure to it.
2.False
Tissues are groups of similar cells that have a common function. An organ is a structure that is composed of at least two or more tissue types and performs a specific set of functions for the body. Many organs working together to accomplish a common purpose is called an organ system.
3. False
Prokaryotes are unicellular organisms that lack organelles or other internal membrane-bound structures. Therefore, they do not have a nucleus, but, instead, generally have a single chromosome: a piece of circular, double-stranded DNA located in an area of the cell called the nucleoid.
4. False
False, blood cells don't have a rigid cell wall. Plants and Bacteria have rigid cell walls, but not blood cells!
A tack weld must be correctly applied so that it is strong enough to hold the assembly and still not interfere with the finished welding.
Welding could be a fabrication method whereby 2 or additional elements are consolidated along by suggests that of warmth, pressure or each forming a be part of because the elements cool. fastening is typically used on metals and thermoplastics however also can be used on wood.
The tack weld ought to be robust enough to resist forces to that it should be subjected. The tack welds ought to be fitly sized so they'll manage the load of the elements that they're holding. Tack welds are usually created once the assembly is being preheated as preparation for the final welding process.
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Explanation:
John F. Kennedy's speech had a significant impact mainly on young voters, as the president was assertive in saying words that invited young people to work for the country, as there is a saying that young people are the future of the nation, so the the president's speech gave rise to a vision of hope, unity and integration in young people, which brings a feeling of patriotism across the country and the freedom to pursue dreams through the work and joint action of the people and especially the young people to build a country worthy and fair for all.
