Biology, 25.01.2020 12:31, hallmansean04
What does it mean for a membrane to be selectively permeable?
only certain molecules are allowed to pass through.
the membrane is rigid and only allows water to pass through.
all types of molecules are able to pass into the cell.
the membrane is rigid and nothing can enter or leave the cell.
Answers: 2
Biology, 21.06.2019 19:30, skmc1985
The diagram below represents a marine food web and a process that can harm the human population. each circle represents an organism and the smaller dots inside them represent a toxic substance. what is being represented and how does it harm the population? the diagram represents biological half-life, in which toxins build up in organisms higher up on the food chain, and this can negatively impact humans who consume the organisms and the toxic substance. the diagram represents biomagnification, in which toxins build up in organisms higher up on the food chain, and this can negatively impact humans who consume the organisms and the toxic substance. the diagram represents the process by which different organisms prey upon each other; this can impact the human population by reducing the number of organisms that do not contain the toxin. the diagram represents the way that toxins are metabolized by living organisms, with those at greater trophic levels able to metabolize more efficiently than those at lower levels. this means that those at higher tropic levels are safer for humans to consume compared to the organisms at lower trophic levels.
Answers: 1
Biology, 22.06.2019 02:20, jimperez9616
Astudent analyzed ears of corn that demonstrated two traits in the f2 kernels, purple or white colors and smooth on wrinkled shapes. a tabulation of 135 individual kernels gave the following results: purple and smooth = 75 white and smooth = 28 purple and wrinkled = 24 white and wrinkled = 8 what would be the only phenotype present in the f1 ger
Answers: 3
Biology, 22.06.2019 10:30, genyjoannerubiera
Jason, a dog breeder, decides to mate a poodle with a golden labrador retriever. he wants to get puppies with the curly hair of the poodle and the color of the labrador. what concept is shown in this example? question 6 options: artificial selection adaptation evolution natural selection
Answers: 1
What does it mean for a membrane to be selectively permeable?
only certain molecules ar...
only certain molecules ar...
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