Answer:
Catalyst
Explanation:
They increase the rate of reaction by decreasing the activation energy of the reaction. As they are not used up in the reaction they are required in a small quantity.
Answer:
Does this help?
Explanation:
Plants are very efficient when it comes to supplying for people. Plants not only allow us to breath, but we can also feed off them. We can always grow plants. Planting is also better for the environment. Less people will pay for fruits and vegetables. Even with all the advantages of just supplying plants as human food, it would be almost, if not impossible to feed the entire population all year off salads.
<span>Motor end plates are associated with muscular contractions.
Motor end plates are the large and complex end formation of a motor neuron that
builds contact with the skeletal muscle fibers. Without motor end plates,
muscular contractions will not be possible. This works highly during emergency
situations where the body takes a fight or flight reaction. <span>
<span>A good
example is when the fingers touch a burning candle; these motor end plates get
quick impulses from the brain and send
signals to the muscles to move it away to prevent further damage to the body. Without
motor end plates we would be in a heap of trouble as this is the mechanism of
the body responsible for motor skills and quick reaction time.</span></span></span>
Answer: B. right atrium --> right ventricle --> left atrium --> left ventricle
Explanation: Deoxygenated blood enters the superior vena cava and inferior vena cava and collects it on the right atrium. It is then pumped up through a valve and enters the right ventricle. Then it is transported by the pulmonary artery to the lungs to become oxygen rich blood. From the lungs oxygenated blood enters into the pulmonary vein and back into the heart and goes inside the left atrium. The blood is pumped again through a valve going to the left ventricle and transported to the body through the aorta which distributes oxygen rich blood.
