Ques:Q: At what point can nutrients enter or exit an ecosystem? Read this paragraph and choose the correct option from the provided answers: Nutrients can enter or exit an ecosystem at any point and can cycle around the planet. Choices: - Largest Population Point - Longest Point - Hottest Point - any point A:

Ans:any point
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Ques:Q: What is measured by the intensity of the sound waves? Read this paragraph and choose the correct option from the provided answers: Loudness refers to how loud or soft a sound seems to a listener. The loudness of sound is determined, in turn, by the intensity of the sound waves. Intensity is a measure of the amount of energy in sound waves. The unit of intensity is the decibel (dB) . Choices: - inputs - tone - pitch - loudness A:

Ans:loudness
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Ques:Q: What laboratory instrument is used to analyze and test for static charge? Read this paragraph and choose the correct option from the provided answers: A laboratory instrument used to analyze and test for static charge is called an electroscope. Seen below, an electroscope consists of a metal knob connected by a metal stem to two very lightweight pieces of metal called leaves, shown in yellow. The leaves are enclosed in a box to eliminate stray air currents. Choices: - microscope - bunsen burner - microtome - electroscope A:

Ans:electroscope
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Ques:Q: Thrombocytes are more commonly known by what name? Read this paragraph and choose the correct option from the provided answers: Platelets and Coagulation Factors Blood must clot to heal wounds and prevent excess blood loss. Small cell fragments called platelets (thrombocytes) are attracted to the wound site where they adhere by extending many projections and releasing their contents. These contents activate other platelets and also interact with other coagulation factors, which convert fibrinogen, a water-soluble protein present in blood serum into fibrin (a non-water soluble protein), causing the blood to clot. Many of the clotting factors require vitamin K to work, and vitamin K deficiency can lead to problems with blood clotting. Many platelets converge and stick together at the wound site forming a platelet plug (also called a fibrin clot), as illustrated in Figure 40.8b. The plug or clot lasts for a number of days and stops the loss of blood. Platelets are formed from the disintegration of larger cells called megakaryocytes, like that shown in Figure 40.8a. For each megakaryocyte, 20003000 platelets are formed with 150,000 to 400,000 platelets present in each cubic millimeter of blood. Each platelet is disc shaped and 24 m in diameter. They contain many small vesicles but do not contain a nucleus. Choices: - chromosomes - molecules - droplets - platelets A:

Ans:
platelets
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