Starch cannot diffuse across the membrane because starch molecules are too large to fit through the pores in the dialysis tubing, whereas iodine is a smaller molecule and therefore can diffuse across.
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Vesicles is a transport material within the cell.
Answer:
Species
Explanation:
Species and the Ability to Reproduce. A species is a group of individual organisms that interbreed and produce fertile, viable offspring. Members of the same species share both external and internal characteristics which develop from their DNA.
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Answer:
<u>c. metallic bond</u>
Explanation:
Metallic bonding, unlike other forms of atomic bonding, involves delocalized elections. The negatively charged electrons form a "sea" around metal cations. Electrons within the valence shells of metals are only held loosely within their molecular orbits- the metals are held together due to the strong attraction between these delocalized electrons and positive nuclei.
The electrons are typically described as mobile, free, and delocalized. These traits are responsible for several metallic properties such as:
- electrical conductivity
- heat conductivity
- electronegativity
- malleability
