Which of these statements about molecules is true? A. All molecules only contain one element
B. Two or more molecules can combine to form an atom
C. the elements in a molecule are always present in equal proportions.
D. The atoms in a molecule cannot be separated from each other by physical means
Answers: 3
Biology, 21.06.2019 16:30
Which of these is not a function of some membrane proteins ? a.allowing polar molecules to enter the cell b.recognizing other types of cells c.receiving messeges from other cells b.carrying messages to oher cells
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Biology, 22.06.2019 01:00
The sketch shows a rynchosaur, an extinct animal that is known only from fossils. there has been much debate about the classification of these creatures. some scientists suggest that they belong with primitive amphibians, and some think they are related to snakes and lizards.the data equally support both cases. which statement best explains how to draw a cladogram that includes the rynchosaur? draw the cladogram for amphibians. draw the cladogram for reptiles. draw two cladograms, both showing the traits, and leave it as a hypothesis. draw two cladograms, both showing the traits, and have scientists vote
Answers: 2
Biology, 22.06.2019 05:50
Which of the following is not a possible effectof increasimg carbon dioxide levels in the atmosphere ?
Answers: 1
Which of these statements about molecules is true? A. All molecules only contain one element
B. Tw...
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