Ajman American Private School Book questions Grade 10 Subject: WAVE & OPTICS Page 460 Q1-Why might it be unwise to drink water straight from a pond? Because some of the things that live in the water could make you sick. Page 461 Q2- If you had a powerful microscope, how could you determine whether a cell was from a eukaryote? If the cell has a nucleus, it is from a eukaryote. Page 462 Q3- What makes viruses so dangerous and vaccines so important? Viruses spread quickly, make people very sick, and can be deadly. Vaccines can prevent Viruses. Page 463 Q4- Which evolved first: viruses or living organisms? Explain. Living things must have come first, because viruses need living cells to reproduce Q5 - Why is it important to use a weakened virus in a vaccine? An undamaged virus could infect the patient with a serious disease Q6-Use the information below to answer the questions When a virus sickens many people at the same time within a limited geographic area, the outbreak is called an epidemic. During the 2014–2015 Ebola epidemic in West Africa, people began to get sick faster and faster beginning in May. There were about 375 new Ebola cases at the beginning of June. By July first, there were about 750 new cases. a) On the graph, circle the variable that depends on the other. b) Explain the relationship between the number of cases reported and time Cause double each month c) Find the number of new cases expected by September. Use an expression to plot the number of new cases for both September and October on the graph. Then finish drawing the line In September will be 3000 and October will be 6000 Page 464 Q7- Label the shape of each bacteria Q8- Draw the structure of bacteria and write its parts Q9- Use the descriptions below to label the structures. cytoplasm everything inside the cell membrane genetic material string-like chemical instructions for cell pili tiny hairs that help cell move and reproduce ribosomes round structures where proteins are made Page 465 Q10- Label the diagram with these terms: ( asexual reproduction, binary fission, conjugation, and transfer of genetic material.) Then, match the number in the diagram to the step it describes below. __4____ Cells separate; one now has some genetic information from the other cell. ___2___ Cell splits into two identical cells. ____1__ Cell grows larger before dividing. ____3__ One cell passes some of its genetic information to another cell. Page 466 How do bacteria protect their genetic material and cytoplasm during harsh environment? Bacteria form endospores, which are tough outer coatings, that let them shelter in place, protecting their contents until conditions improve. Would you classify bacteria as harmful or helpful? Explain. Helpful .fewer than one percentage cause illness. Most appear to be essential for healthy body, food, and environment Page 467 Tasha and Marco examine a cell through a microscope. Tasha suggests that the cell is a protist. Marco thinks it might be a bacterium. What evidence would prove Tasha right? The cell has a nucleus, is a part of a larger organism, or has no cell wall. Page 468 What is a possible relationship between the fungus and the tree root? The fungus could be a parasite and the tree is the host What is the purpose of fungal spores? Spore travel by wind and water to a place where they can grow into a new fungus Page 469 Circle or highlight evidence of harm in the image description Why would a fungus growing on a rock need a partner to provide it food? Fungi are heterotrophs; they cannot make their own food. Why would fungi be better than seeds at absorbing water? Hyphae form a network that could absorb more water than a hard seed Page 470 1. What is unique about parasites? Parasites can`t live on their own, they have to live in or on a host and get food for energy. 2. What are three ways that fungi interact with other kinds of living things? Fungi form lichens with bacteria or algae, cause diaper rash in baby humans, and help plants take up water. 3. Could you have two or more viral infections at the same time? Explain, using evidence to support your argument. Yes, The viruses could attack different cells, or more than one virus could attack the same cell at the same time. 4. Which of these taxonomic groups are most closely related: Fungi, Archaea, Bacteria, Protista? Explain. Fungi and protists are most closely related because they are different kingdom in the same domain .Archaea and bacteria are in separate domains.
