Active transport requires energy because unlike osmosis and diffusion which are passive transport methods which sees where the particles are moving along the concentration gradient, in active transport, the particles are moving against the concentration gradient and as such energy through ATP is needed for the particles to be transported.
I'll leave this here:
https://legacy.etap.org/demo/biology_files/lesson6/instruction4tutor.html
Genes<span> for medically important </span>proteins can<span> be cloned and inserted into </span>bacteria<span>, as shown in the diagram below. </span>Why can bacteria recognize a human gene and then produce a human protein<span>? A. DNA replication in </span>bacteria<span> and </span>humans<span> is the same. B. </span>Bacterial<span> cells contain the same organelles as </span>human<span> cells.</span>
A major difference between mammalian spermatogenesis and oogenesis is <span>the number of gametes made per month.</span>
Connective tissue is the tissue of a living organism that does not directly correspond to the work of any organ or organ system, but plays an auxiliary role in all organs, accounting for 60-90% of their mass. Performs basic, protective and trophic functions. Connective tissue<span> has three main components: cells, fibers, and ground substance. </span>Connective tissue<span> is classified into two subtypes: soft and specialized connective tissue. Its main functions are connecting function, keeping water balance, healing function, protection, and trophic function. </span>
