B. Nucleus because it contains the instructions for the cell
Answer:Proteins are composed of amino acid molecules linked together by peptide bonds. C, H, N, S, and O are typical atoms that compose amino acids
Explanation: I hope this help mark me brainliest
Answer:
Cell membrane
Explanation:
According to the question, Lauren's diseased condition, which is cystic fibrosis, is characterized by her body's inability to control the flow of salt into and out of her cells leading to symptoms include coughing and wheezing when she tries to exercise.
Lauren's inability to control the movement of salt and water into her cells is as a result of an affected CELL MEMBRANE. The cell membrane is the organelle that controls what goes in and out of a cell due to its semi-permeability.
Explanation:
it is an endothermic process
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Answer is A. A population becomes separated by environmental factors into two groups that do not reproduce with one another.
When a population of a species become geographically separated then gene flow between them stops. Over a period of time, the population may become genetically different in response to the natural selection due to different environments. Selection and genetic drift will act differently on these two separated populations. This will results into two separate species. This type of speciation is called allopatric speciation.
