Answer and Explanation:
- What was Patrick’s hypothesis? <em>Fishes that are fed with food exposed to the microwave will become smarter and will swim faster. </em>
- Which fish are in the control group? The ones that feed on regular food
- What is the independent variable? Food exposed to the microwave
- What is the dependent variable? The time fishes spend in swimming through the maze
- What should Patrick’s conclusion be? You will find the results considered in the attached file.
<em>In both groups, Patrick recorded a decrease in the time spent swimming through the maze</em>. In both groups, there were two cases in which the animal increase the swimming time. These cases could be considered as outliers. Although in general, <em>the treated group made it in a shorter time after the treatment, when comparing values before and after Patrick can not find any real difference among groups.</em> <em>His results do not show any difference,</em> hence <em>the speed and the intelligence of the animals is not influenced by the change in food, or if it is, more experimental time is required to record significant differences. </em>
Cell membrane - the thin layer of protein and fat that surrounds the cell, but is inside the cell wall. The cell membrane is semipermeable, allowing some substances to pass into the cell and blocking others.
<h3><u>Answer;</u></h3>
Preload, afterload, and contractility
<h3><u>Explanation;</u></h3>
- Cardiac output is the amount of blood the heart pumps in 1 minute, and it is dependent on the heart rate, contractility, preload, and afterload.
- Preload is the initial stretching of the cardiac myocytes or muscle cells prior to contraction. Afterload is the force or load against which the heart has to contract to eject the blood.
- Contractility is the intrinsic strength of the cardiac muscle independent of preload, but a change in preload will affect the force of contraction.
1. Red: even without knowing much, just by realizing that red is one of the extremes (think rainbow), we can assume that it is the longest. Also, infrared waves' wavelengths are longer than that of visible light.
2. Electromagnetic radiation: the fact that they have "ray" in the names shows that they are radiation. It's not ultraviolet because that is part of electromagnetic radiation.
3. Photon