Answer:
<em>The principle of common descent states that all organisms in the world exist because of a common ancestor which gave rise to all the life seen on Earth. The organisms which are more closer to one another might have a common ancestor in the near past as compared to other organisms. The organisms which share distant common ancestors have less common characteristics. This principle has led us to form the basis for the formation of evolutionary biology. </em>
Answer:
virus, bacteria, human cell
Explanation:
Answer:
B. a graduated cylinder to measure 30 mL of water for each plant daily
Explanation:
<em>Option A is incorrect because an electronic balance is used to measure the mass of an object and not the volume.</em>
<em>Option C is incorrect because a metric ruler is used to measure the dimension of objects and not the mass.</em>
<em>Option D is incorrect because a thermometer is used to measure temperature and not pH.</em>
The correct option is B. A cylinder is applicable in the measurement of volume of liquids.
Calcium ions presents Ca+ binds to troponin which makes tropomyosin move out of way for myosin to attach. Cross-bridge attaches. ATP breakdown provides energy to ready the myosin head for a power stroke. Myosin head attaches to exposed binding site on actin and the power stroke is accomplished. Cross-bridge (Myosin head) springs from raised position and pulls on the actin filament. Cross bridges break, ATP binds to Cross-bridge (but is not yet broken down) Myosin heads are released from actin. As long as calcium ions and ATP are present, this walking continues until the musle fiber is fully contracted. Hope this helps!
