spindle-fiber structure because this is used to divide cells; cancer is just cells dividing way too much. so if the <em>spindle-fiber structure </em>were to fail it could cause cancer.
Of the steps included in the scientific method, Shameka is performing step five, which is to<u> test your hypothesis by performing an experiment</u>.
The scientific method is the globally accepted process by which to make scientific claims. This method includes seven steps which are:
- Ask a question
- Do research
- Create a hypothesis
- Design an experiment to test the hypothesis
- Perform the experiment
- Study the results and make a conclusion
- Communicate the results to your peers.
The question states that Shameka is <u>gathering samples from nearby water sources</u>, therefore she is in the process of testing her hypothesis through experimentation, which corresponds to step 5 of the scientific design.
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Answer:
The correct answer is - option A.
Explanation:
Among all of the given options the best character of the bacterial cell is the size of the cell which ranges in between 0.5 to 2 microns. The best evidence for the presence of bacterial cell is the smaller size of the cells.
Rest of the characters provided in the options does not matches with the characteristics of bacterial cells and not related to the bacteria.
Thus, the correct answer is option A.
Clotting cascade refers to the series of reactions which take place simultaneously and result in blood clotting. The clotting cascade is a complex set of negative feed back mechanism which is used by the human body to maintain homeostasis. The clotting cascade can be triggered either by intrinsic or extrinsic release of chemical mediators. The reaction occur in this order:
Intrinsic factor < activation of common clotting pathway < platelet lipids are released < prothrombin < fibrinogen < fibrin formation < stabilized fibrin clot.
Two examples of anticoagulant medication that affect the pathway are heparin and warfarin
