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Ostrovityanka [42]
3 years ago
11

The pH scale ranges from ____________ to ____________ and is used to indicate the ____________ of a solution.

Biology
1 answer:
nexus9112 [7]3 years ago
4 0

Answer:

Acidic, Basic, acidity

Explanation:

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A. Urethra

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_______ is the branch of biology that classifies living things in a hierarchical system. A. Phylogeny B. Taxonomy C. Molecular b
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b.taxonomy

Explanation:

7 0
3 years ago
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Sodium ions, oxygen (O2), and glucose pass directly through lipid bilayers at dramatically different rates. Which of the followi
Elodia [21]

Answer:

The correct order, from fastest to slowest, for the passage of molecules and ions through the cell membrane is oxygen, sodium ions, glucose (option D).

Explanation:

The plasma membrane is a lipid bilayer, with glycoproteins and membrane proteins, which constitutes a semi-permeable barrier to the passage of substances into and out of the cell.

The speed with which a substance can pass through the membrane depends on its chemical properties -hydrophilic substances pass through with greater difficulty than lipophilic ones- requiring in some cases specialized transport mechanisms. The different rates with which a substance passes depends on this.

  • <em>Oxygen (O₂) </em><em>passes through simple diffusion, depending on a concentration gradient. It's the molecule that passes through the membrane the fastest. </em>
  • <em>In second place, there would be the </em><em>Na⁺ ions</em><em> -charged atoms- that cross the membrane by facilitated diffusion, through specific ionic channels. </em>
  • <em>The </em><em>glucose</em><em> molecule, being larger, requires the use of transport proteins, being its passage through the membrane slower with respect to oxygen or sodium.</em>

Undoubtedly, molecular weight and affinity for the plasma membrane are determining factors for the passage of molecules through the lipid bilayer.

Learn more:

Simple diffusion and active transport  brainly.com/question/6420224

4 0
3 years ago
Carbon and hydrogen have similar electronegativities and combine together to form hydrocarbon molecules. What type of bonds form
egoroff_w [7]
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Covalent bond involves sharing of atoms between two elements; each element will donate electrons which will be equally shared by the elements involved. In the case of carbon and hydrogen, carbon has four electrons in its outermost shell, therefore it will form a covalent bond with four atoms of hydrogen each of which will donate one electron.
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1.)Parkinson's disease 2.)Multiple sclerosis 3.)Alzheimer's disease 4.)Amyotrophic lateral sclerosis 5.)Huntington's disease

Please let me know if it's correct.

8 0
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