In biological control method, one living organism is used against another to check its uncontrolled growth. Which kind of population interaction is involved in this?
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In biological control method, one living organism is used against another to check its uncontrolled growth. Which kind of population interaction is involved in this?
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- Consider the following graph depicting the population growth of bacteria in an “ideal” laboratory created condition. Explain what conditions would allow for a population to grow exponentially like in this example, and why this is unlikely to occur naturally in the wild. ✓✓ Population (number of bacteria) 35000 30000 25000 20000 15000 10000 5000 0 Population Growth of Bacteria in Ideal Conditions 2 Time (hours) 3In an experiment design to test the effects of outboard motor oil on the growth of algae, identify the control, the independent variable, and the dependent variables. Construct a simple hypothesis.Find examples of: One density-independent factor that can influence an organism's intrinsic growth rate. One density-dependent factor based on population regulation and one factor based on the Allee effect that can influence an organism's intrinsic growth rate.
- Bacteria reproduce by fission (splitting in two) and can respond very rapidly to environmental changes. A culture of bacteria is found to contain 4.95 X 109 bacteria and the carrying capacity of the culture is 5.0 X 109. How will the bacterial population change in the near future. Group of answer choices -it will increase very rapidly to K -it will increase very slowly to K -it will grow exponentiall -it will decrease very rapidly to KWhat is the difference between a control group and experimental groupWhich population interaction is widely used in medical science for the production of antibiotics?
- Which of the following is the best definition of the term controlled variables? a) The variable is what is measured or recorded in the experiment. This is the variable in an experiment that the researcher can change and b) control A treatment level that is often used for comparison, it is usually zero or a c) natural level. d) The things in an experiment that are kept the SAME for every level of treatment. e) A statement explaining an observation.An exponentially growing bacterial population increases its number from 103 to 1010 in 4.5 hours and reached 10¹4 cells in 8.5 hours. What is the growth rate of the population? O-7 generations/hour O-4 generations/hour O-3 generations/hour -6 generations/hour Lacks information, cannot be determined NextColony collapse disorder (CCD) is unexplained loss of entire bee colonies that has been occurring in increased numbers across the world. The cause of the disorder is unknown, although it has been suggested that pesticides may play a role. To study this phenomenon, 300 bee colonies at 20 different sites across the U.S. are analyzed. Colonies are classified as having no CCD symptoms (group 1) or as having CCD symptoms (group 2). Bee pollen is isolated from group 1 and group 2 colonies and analyzed for the presence of pesticides. Significantly higher average pesticide levels being found in group 2 colonies, the conclusion of the study states that increasing pesticides use may be leading to the death of bees and a loss of bee colonies in CCD. Does this study have a control group? If so, what is the control group? If not, why not?
- Experiment with fish tank and algae Design an experiment with the scenario described below. The scenario gives you the observation. Please label your question, hypothesis, predication, and how you would design your experiment. You have access to any materials that you need for your experiment. Include a label for the standardized controls, independent variable, and dependent variable. You observe that your five-gallon fish tank that sits on your windowsill grows algae very quickly.5a. On the following figure to the right, correctly label the name of the population growth pattern that the red line and the blue line demonstrates. 5b. Match the following growth equations to the growth curve by drawing a line between the equation and the curve or placing the name of the growth pattern next to the equation. dN (K-N) rN -- dt K dN = rN dT %| Time (t) → 5b. What does K in this figure represent? How and why do population growth rates change as the population nears K? Population size (N)to test an hypothesis about a given variable, experimental and control groups are tested in parallel. Which of the following best explains the dual experiments