The answer is a) because when muscles contract, myosin heads attach to actin and breaks down ATP. Energy is released, pulling actin filaments and muscle contracts. Essentially actin and myosin filaments are sliding past each other.
V: 2lw+2lh+2hw
D: m(mass)/v(volume)
The answer is letter D.
A group of white blood cells that has of small and large lymphocytes.
The small lymphocytes bear variable cell-surface receptors for antigen and are
responsible for adaptive immune responses. There are two main group of small
lymphocyte—B lymphocytes (B cells) and T lymphocytes (T cells). Large granular
lymphocytes are natural killer (NK) cells, lymphocytes of innate immunity.
Answer:
D: Rest and Water
Explanation:
Sleep improves the potential ability of some of the body's immune cells to attach to their targets, according to a new study. The study helps explain how sleep can fight off an infection.
Answer:
C
Explanation:
These type of questions leave a great deal to be desired. There is no mention of which way Hubble used and manipulated data. He studied the variations in light to determine his conclusions.
Nor is there any mention of what Lomonosov did to come to the conclusion that conservation of mass is a constant.
We don't know what was done to get the results. Hubble was studying the universe; the conclusions made by Lomonosov depended on lab equipment that was very delicate (I'm assuming). I doubt he manipulated variables. He measured what he got.
I think the answer is C, but the question has so many assumptions that it is hard to know what answer to pick.
