Biology, 03.07.2019 08:00 amanda1717
Which of the following was most likely responsible for the fact that organic molecules no longer form spontaneously on earth? the amount of uv radiation increased. the amount of oxygen in the atmosphere increased. water accumulated in the oceans. earth's surface temperature warmed.
Answers: 1
Biology, 21.06.2019 20:40
Match the following terms describing electrical events with the correct phases of the cardiac cycle. the ventricular muscle cells depolarize at the start of this phase. during this phase, na+ entry through the funny channels causes the pacemaker potential of sa nodal cells to gradually become less negative until it reaches threshold. the ventricular muscle cells repolarize right before this phase. the cytosolic concentration of calcium in the contractile cells of the ventricle is highest during this phase. a. isovolumetric relaxation b. ventricular ejection c. isovolumetric contraction d. ventricular filling
Answers: 3
Biology, 22.06.2019 10:30
10. in which phase will crossing-over occur? a. mitosis b. metaphase ii c. prophase i d. meiosis ii
Answers: 1
Biology, 22.06.2019 15:30
Which of the following can occur to two segments of a population if they are geographically isolated 1.) they can only share some types of genes 2.)both groups most likely become extinct 3.)they find a way to come back together 4.)eventually they become separate species
Answers: 1
Biology, 22.06.2019 19:40
1. mendel observed that pea plants had traits, such as color, that were either “one or the other,” never something in between. discuss the correlation between mendel’s factors, what they might be, and why pea plant traits come in one form or another—e.g., gray or dark red—rather than blended.
Answers: 1
Which of the following was most likely responsible for the fact that organic molecules no longer for...
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