Biology Test 1 Review

Biology Test 1 Review



okay this is biology test one review just on characteristics of living things and viruses this is in addition to the questions that we've already gone over the virus questions and the ones from your quiz on characteristics of life so these are just some extra questions to get you thinking okay question one ignore those little three there which of the following is not a stimulus that living things sense and respond to DNA light hunger or sound what I suggest you do is pause and either write this down or write down your answer and why you think so before you move on to the next slide where I explain the answer okay and make sure you notice that it says not and I've included those because they're very frequently on M cast so it's used it's worth getting used to okay the answer is DNA so living things respond to significant things in their environment and so examples we've talked about or how planets been towards light we've talked about how our mouth waters when we see food or about to eat we've talked about homeostasis how the body maintains balance for example when you're cold you shiver that's part of how living things respond to their environment and it's how we maintain homeostasis is how we grow it's how we metabolize question two what is true of all organisms organisms grow and develop organisms grow but never develop organisms always remain the same size organisms always shrink and divide so pause and come up with your answer okay the answer is all living things grow and develop so that's one of the things in the Misses nog and one of the things we've talked about a lot but living things need to grow and develop so we go from being one cell to many many many cells and individual cells like prokaryotes bacteria that we're going to talk about in a couple days also grow so they'll go through a growth phase before they divide question 3 what is the smallest functional and structural unit of life the membrane the cell the stimulus the metabolism okay so you have some typos here sorry about that and the answer is the cell okay so all living things are made of at least one cell and the cell carries out metabolism respiration and growth so the cell is like a little organism onto itself and of course there are unicellular organisms one celled organisms and one of the examples we saw was a single-celled fungus the yeast that we looked at we also saw a single celled protists that carried out metabolism respiration growth and by metabolism we mean eating and digestion or for plants they also you know eat the sugars that they make but they also make sugars using the Sun question 4 which of the following characteristics is shared by all organisms all organisms are composed of two cells all organisms can move all organisms can smell and taste all organisms can do photosynthesis so you can pause here and think about your answer and the answer is all organisms can move and if you don't remember all the things that mrs. nerd stood for as a little way to remember it was mrs. nerd plus all living things are made of cells and M is for movement so you might want to refer to your notes question 5 which of the following is the structure of a virus genetic material surrounded by a capsid a nucleus surrounded by a membrane organelles in a cytoplasm mitochondria is surrounded by a protein envelope so which one of those is the structure of a virus you can pause here and the answer is genetic material either DNA or RNA surrounded by a capsid and I know you can't see the details of the picture here but here we have DNA surrounded by a capsid and then it's also can be surrounded by a protein envelope so you might want to see your virus handout or the virus PowerPoint for the structure because there are several questions about structure on the test okay and lastly a sample open response describe a virus that infects humans what are some of the symptoms how does it pass from organism to organism what is the structure I think another sample open response I could have put here would be how could you prove that a virus is nonliving and ask you to describe two of the features that make a virus nonliving but this one of course would refer exactly to what ever virus you researched and I'd be looking for some of the things that you had to know about your virus so the answer of course is to review the virus that you researched and if there was something missing review it now so some of you were missing a picture of your virus so you couldn't comment on structure some of you are missing how it moved from person to person or from mosquito to person so you might want to review that or you might want to pick a simple virus like influenza the flu that we talked about a lot which you already know pretty much how it passes from person to person okay so my other advice is to study the questions that run the sample virus questions that I gave you for homework and the characteristics of life quiz as well as the characteristics of life quiz that's posted on Schoology and I will reuse those questions but I might reorder them I may reward them a little bit so I would make sure you understand the content of what I'm driving at and when you review viruses remember that you're thinking about what makes virus is living or nonliving now biologists are considering them nonliving but why might you argue them living so they're not made of cells they do have DNA or RNA they don't have any organelles so think of those key features of viruses as you review if you have any questions you can certainly email me or you can contact me through Schoology and that's the end I hope you have a quality study time

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