1. which of the following statements is true regarding muscle contraction?
when a muscl...
1. which of the following statements is true regarding muscle contraction?
when a muscle contracts, the sarcomere remains the same size.
when a muscle contracts, the a-band shortens.
when a muscle contracts, the h-zone becomes narrower (shortens).
when a muscle contracts, the lighter i-band becomes wider.
Answers: 2
Biology, 21.06.2019 16:00
Which of the following examples can cause gene flow between populations? a.an increase in predators to a population of zebra b.a volcanic eruption that kills half of a population of mice c.bird droppings that contain seeds from a different location d.a person that sprays a toxin on a group of mosquitoes
Answers: 2
Biology, 22.06.2019 03:30
Students in biology are studying the macromolecules of life. they used a calorimeter to determine the calories in various types of food. once the lab was completed, the students ate the left over food samples. monica commented that in just 6 or 7 "chews" of the saltine, it was gone; nothing but a sticky paste in her mouth. elaborate on what happened chemically while chewing the saltine. include the macromolecules present.
Answers: 1
Biology, 22.06.2019 05:30
The vaccine in a flu shot contains weakened flu viruses. how does a flu shot work with the immune system? a. it destroys lymphocytes. b. it destroys macrophages. c. it activates macrophages. d. it activates lymphocytes.
Answers: 3
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