I'll say C, Science cannot answer difficult question...let me know.
Answer:
a. maple leaf and oak leaf
Explanation:
Homologous structures are those that have the same evolutionary origin but fulfill very different functions, a good example could be the wing of a bird and the wing of an insect, the wings of birds, are modified front members and the wings of insects are "BRANCHES" modified
In the case of maple and oak leaves they are homologous structures because they have a common ancestor according to their genetic decoding, that is, even if they can look different or behave differently, they are genetically homologous structures.
The doctor is checking for pain sensation. The doctor starts at the foot to check for peripheral nerves, sensory ganglia, lateral spinothalamatic, tract of the spinal cord, brainstem, thalamus, and sensory cortex. <span> </span>
Answer:
False
Explanation:
Active transport is one of the two major kinds of transport (the other being passive transport). Active transport involves moving substances against their concentration gradient i.e. from where they are low in concentration to where they are high in concentration. Hence, energy input in form of ATP is required by the cell to make this occur.
As stated in this question, the Na+/K+ (sodium-pottasium) ATPase pump is an example of active transport, which requires energy to move sodium ions. However, in active transport, substances are moved from a lower concentration to a higher concentration and not otherwise as depicted in this question, hence, it is FALSE.
