Biology, 14.12.2020 07:20 reearamrup27
In the picture below ions, or charged particles, are being pumped through the cell membrane. Why do they require energy to transport across the membrane?
Answers: 1
Biology, 21.06.2019 22:00
Which of the following scenarios is an example of the bottleneck effect? answers a in south africa, much of the afrikaner population is descended from a small number of dutch colonists. in this population, this is an unusually high frequency of pseudoxanthoma elasticum (pxe), an elastic tissue disorder. b four white-tailed deer are introduced to a park in finland. thirty years after their introduction scientists compare the genes in the population and find that there is no variation. c during the industrial revolution, london's air became filled with soot. as a result, birds started eating more of the lighter moths because they were easier to spot than their darker counterparts. over time, the moth population changed so that there were more darker moths than lighter ones. d 10% of the population of american alligators in an area have the recessive trait albinism. a massive flood results in the death of 80% of the population. of the remaining population, 60% have the recessive trait of albinism.
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Biology, 22.06.2019 12:40
In which part of the body is a ball-and-socket joint found?
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Biology, 22.06.2019 13:30
How do the sperm cells get from the stigma to the ovules? a. they slide down the petals to the bottom of the flower. b. they travel through pollen tubes. c. they travel along filaments. d. insects carry the sperm cells from the stigma to the ovules.
Answers: 3
Biology, 22.06.2019 17:30
Which of these reproductive method is the only on available to mosses and fernsspores
Answers: 1
In the picture below ions, or charged particles, are being pumped through the cell membrane.
Why do...
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