Energy is the property that must be transferred to an object in order to perform work on,or to heat,the object,and can be converted in form, but not created or destroyed.
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1. Newton's second law states that the acceleration of an object is directly related to the net force and inversely related to its mass. Acceleration of an object depends on two things, force and mass.
2. Answer: why in a single fixed pulley the velocity ratio is always more than the mechanical advantage. ... Thus effort is able to lift less load than actual effort applied and hence mechanical advantage is less than
3. Total internal reflection, in physics, complete reflection of a ray of light within a medium such as water or glass from the surrounding surfaces back into the medium. The phenomenon occurs if the angle of incidence is greater than a certain limiting angle, called the critical angle.
7. Mercury which is a metal but a liquid at room temperature. So it cannot be drawn into wires.
8. Hermaphroditic animals—mostly invertebrates such as worms, bryozoans (moss animals), trematodes (flukes), snails, slugs, and barnacles—are usually parasitic, slow-moving, or permanently attached to another animal or plant.
9. A bacteriophage is a type of virus that infects bacteria. In fact, the word "bacteriophage" literally means "bacteria eater," because bacteriophages destroy their host cells. All bacteriophages are composed of a nucleic acid molecule that is surrounded by a protein structure. A bacteriophage attaches itself to a susceptible bacterium and infects the host cell. Following infection, the bacteriophage hijacks the bacterium's cellular machinery to prevent it from producing bacterial components and instead forces the cell to produce viral components. Eventually, new bacteriophages assemble and burst out of the bacterium in a process called lysis. Bacteriophages occasionally remove a portion of their host cells' bacterial DNA during the infection process and then transfer this DNA into the genome of new host cells. This process is known as transduction.
Explanation:
Answer:
At 40x, Stella could see the cells, but they will look really small. At 100x, Stella was able to see the cells to the point where she could see most of them up close. At 400x, Stella could see the cells one by one close enough. Some of the cells are shoe-shaped, which is one of the characteristics of paramecium. The brown at 400x next to the orange is the one that mostly looks like a shoe.
Explanation:
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Fungal-like protists includes parasitic and predatory molds, water molds (Class Oomycota), and terrestrial slime molds (Myxomycota).
<span>These both move and lack the chitin that helps define true fungi. </span>
<span>These fungal/amoeboid Myxomycota have a motile life stage fungi do not. However they do produce fruiting bodies to reproduce as do some fungi. Slime molds have an amoeboid phagotrophic (feeding) phase of their life cycle and use their pseudopodia to move and eat. In their mobile life stage they lack cell walls. </span>
<span>Oomycota are aquatic fungi-like protists. They are water molds & plant parasites known as white rusts, and downy mildews. They have cell walls composed of cellulose, not chitin like true fungi. </span>
The sexual reproduction has heterogamous sex cells and asexual reproduction has motile spores (zoospores swim not sperm). The zoospores, with two flagella, are their asexual means of dispersal in water and damp soil.
<span>Fungi have both sexual reproduction and asexual budding in yeast (that is not binary fission like bacteria). </span>
<span>They are not capable of independent movement like an animal; they are sessile like a plant. </span>
<span>Fungi are heterotrophic and use external enzymatic digestion of food stomach they digest their food outside their bodies and absorb the digested nutrients, this makes them osmotrophs instead of phagotrophs, which engulf their food.
Hope This helped! :D</span>
All of the cells within a complex multi-cellular organism such as a human being contain the same DNA; however, the body of such an organism is clearly composed of many different types of cells.
<u>What, then, makes a liver cell different from a skin or muscle cell</u> is <em>the way each cell deploy (utilizes) its genome</em>. In other words, the particular combination of genes that are turned on (expressed) or turned off (repressed) dictates cellular morphology (shape) and function. This process of gene expression is <em>regulated by cues</em> from both within and outside cells, and the<em> interplay </em>between these cues and the genome <u>affects essentially all processes</u> that occur during embryonic development and adult life.
Outside/Environmental cues include small molecules, secreted proteins (growth factors or signaling molecules), temperature, and oxygen.
The signaling molecules trigger intercellular signaling cascades (series of chemical reactions) that ultimately cause semipermanent changes in expression of genes. Such changes in gene expression can include turning genes completely on or off.
This process is thought to regulate a vast number of cell behaviors, including cell fate decisions during embryogenesis, cell function, and chemotaxis (i.e. cell movement in response to concentration gradient of a particular substance.)