It is also possible to move substances across membranes against their concentration gradient (from areas of low concentration to areas of high concentration). ... If the energy of ATP is directly used to pump molecules against their concentration gradient, the transport is called primary active transport.
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The right ventricle will pump blood into the lungs to be oxygenated bia the pulmonary artery.
Answer:
<u>B. Tall</u>
Explanation:
since an allele that's paired with a dominant allele has no effect on the organism.
<span>Synaptic cleft or the terminal buttons that transmits neurotransmitters to the next neuron, received by its dendrites and is relayed now throughout the system until it reaches the brain.
The messages must travel the distance of the nerves to the brain which are processed and made decisions, from the distance of the nerves from the sense organs, then travel back to the muscles that need to respond through the nerves.<span> </span></span>
Answer: The ectoderm
Explanation: there are 3 layers on the skin I think..
