Answer:A checkpoint is a stage in the eukaryotic cell cycle at which the cell examines internal and external cues and "decides" whether or not to move forward with division.
Explanation: Easy Peasy
Answer:
Capillaries are the blood vessels with the smallest diameter and those closest to the surface of the skin. The blood that circulates through them is therefore closer to the outside air than the blood in the rest of our blood vessels. As the capillary dilates, a greater amount of blood is exposed to the air, which allows it to cool down and our body temperature to be maintained.
Explanation:
Blood is a solution where solutes and cells are found and that participates in homeostatic mechanisms such as the control of body temperature, helping to regulate respectively the preservation and elimination of heat. Blood vessels are the routes of the cardiovascular system, which are responsible for being a means of transport for blood with and without oxygen that reaches all tissues and returns to the heart. In very hot weather, surface thermoreceptors signal the brain that something needs to be done to dissipate heat. For this reason, a vasodilation process is activated, which allows blood to flow to the outermost layers of the skin. This promotes a heat exchange with the environment, which helps the individual to lower their body temperature. Cold causes a decrease in blood flow by reducing the size of the vessel (arteries or veins) through which blood and other substances circulate. By reducing the size of the vessel, the substances that circulate in the blood are also reduced. The heat causes an increase in the size of the blood vessels, which generates greater transport of nutrients through the blood.
Answer: Nuclear Fusion occurs when the nuclear components of an atom combine.
Answer:
There are many questions that can be answered by science but I will provide some examples below.
Explanation:
Science involves many areas of study, <u>from biology and chemistry to physics and neuroscience</u>. Generating questions and providing answers are the most important steps in science as this process has allowed thousands of scientists to develop new drugs to treat previously-mortal diseases, to protect endangered species, to prevent population declines, to understand the behavior of fauna, among many other remarkable outcomes and discoveries.
In this answer, I will focus on some questions belonging to the life sciences areas that can be answered by science:
Biology
<em>How does climatic phenomena, such as El Niño and La Niña, affect the migration of whales?</em>
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Neuroscience (humans)
<em>Is schizophrenia hereditable?</em>
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Behavioral Ecology
<em>Does climate change affect the capability of cuttlefish to camouflage?</em>
Neuroscience (Animals)
<em>Are killer whales capable of problem-solving?</em>
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Ecology
<em>How does the reduction of apex predator populations (terciary consumers) affect the population of secondary consumers?</em>
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Conservation Biology
<em>Why do increased temperatures lead to coral bleaching? What is the mechanism and how can it be controlled?</em>
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Animal Behavior
<em>What is the mechanism that Ophiocordyceps unilateralis (Zombie fungus) uses to manipulate ants for its own disperal?</em>
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Parasitology
<em>Does the parasite Toxoplasma gondii induce erratic behaviors in humans?</em>
Vacuoles are storage organelles that are found in both animal and plant cells. They store food or any other forms of nutrients, they also store waste products so as to protect the contamination of the cell environment. These waste products are sent out of the cell via vacuoles. In plants the vacuoles are larger than in animals. The vacuole provides plant nourishment in the scarcity of water in the external environment hence, prevents the wilting of plants.
