Answer:
Review the procedure
Explanation:
Reviewing the procedure needs to be done before beginning a laboratory investigation, so the investigation can be done correctly and the correct data can be collected.
The other 3 answer choices should be done during or after the investigation, as they all involve data. Data is collected during the investigation.
Whale fossil records show large-scale evolutionary changes from their ancestors to their descendants. By inspecting one particular ankle bone, the astragalus, in whale fossil, its shape and structure end a long standing dispute. The whale evolved from artiodactyls and not mesonychids.
Answer:
Meat-eating, or carnivorous, plants can trap and digest insects and other small animals. They do this to obtain the vital nitrogen that they need to grow. Most plants absorb enough nitrogen from nitrates in the soil. Carnivorous plants live in bogs, where nitrates are in short supply, so they need to obtain their nitrogen by digesting prey instead. Carnivorous plants have developed unique ways to catch insects, such as fluid-filled PITCHERS and spring-loaded traps.
The answer is G ! it has outer temp of 5000 to 6000 K ......!! and colour is white / yellow !!
so it is G !
Answer:
The action potential in an alpha motor neuron is propagated by saltatory conduction that, when it reaches the terminal bouton, causes a Ca2+ influx which leads to the fusing of acetylcholine-containing synaptic vesicles with the plasma membrane, and the release of said neurotransmitter in the neuromuscular junction. Acetylcholine activates the nicotinic receptors that open the sodium / potassium channel and causes the sarcolemma to reverse its polarity.
Depolarization will reach the sarcoplasmic reticulum and thanks to the T Tubules the potential for intracellular release of accumulated Ca2+ will be approximated. To make the concentration of this ion sufficient to produce the contraction there will also be an extracellular calcium entry through the Ca2+ channels. At this moment, the myosin-actin junction points are free and when binding occurs the contraction. When the moment of relaxation arrives, the links must be broken so that the muscle is not contracted. These bonds are broken thanks to the action of myosin as ATP, which breaks the bond by ATP hydrolysis. This process will be favored only when the Ca2+ decrease.
