How can you make small things look bigger?
How does a cell become a clone?
Why don’t all cells look the same?
What do intestinal villi in humans have in common with root hairs in plants?
What is the body’s largest organ?
What causes the ‘lub dub’ sound that your heart makes?
1. To make small things look bigger, you can use optical devices like magnifying glasses, microscopes, or telescopes. These devices can magnify the image of the small object, making it appear larger.
2. A cell can become a clone through a process called cloning or asexual reproduction. In cloning, a cell's nucleus is transferred to an egg cell without a nucleus, resulting in the creation of an identical copy of the original cell.
3. Not all cells look the same because they have different functions and structures. Different cells in the body serve specific purposes, such as muscle cells, nerve cells, or skin cells. These cells have adaptations and structures that enable them to carry out their specific functions efficiently.
4. Intestinal villi in humans and root hairs in plants both serve the purpose of increasing the surface area for absorption. They have finger-like projections that extend into the surrounding environment, providing a larger surface area for nutrient absorption and exchange.
5. The body's largest organ is the skin. It covers the entire external surface of the body and serves as a protective barrier, regulating temperature, and facilitating various sensory functions.
6. The 'lub dub' sound that the heart makes is caused by the closing of the heart valves. The first sound 'lub' occurs when the atrioventricular (AV) valves close, marking the beginning of systole (contraction phase). The second sound 'dub' occurs when the semilunar valves close, marking the end of systole and the beginning of diastole (relaxation phase).