Few synthetic organic chemicals are dangerous in the very low concentrations in which they enter the ocean. How are these concentrations increased? What can be the outcome when these substances are ingested by organisms in a marine food chain?
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Few synthetic organic chemicals are dangerous in the very low concentrations in which they enter the ocean. How are these concentrations increased? What can be the outcome when these substances are ingested by organisms in a marine food chain?
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- Adding high levels of nutrients to a lake or inshore area wouldhave all of the following effects in that environment excepta) death of clams and crabs.b) increased growth of heterotrophic microbes.c) increased growth of photosynthetic organisms.d) increased levels of dissolved O2 .The use of salt and sugar in preserving various types of foods is an application of which of the following concepts? 1) hydrostatic pressure O2) quorum sensing 3) osmotic pressure O 4) pH 5) nitrogen fixationIn the ocean, most organisms rely directly or indirectly on _________ as a food source. Question 9 options: A) microscopic shellfish B) yeast C) phytoplankton D) parasites
- 1) dissolved inorganic carbon such as bicarbonate, is plentiful in the surface ocean. a- In one sentence, what is the biological pump? b- What must happen for dissolved organic carbon to get exported to the deep ocean via the biological pump? Describe at least 2 steps10) The graph describes the relative rates of metabolism that occur at different depths in a lake. I. Evaluate the figure and indicate whether the letters A and D represent only the respiration rate of the organisms. A) TrueB) false II. Evaluate the figure in indicate what the productivity observed at 10 meters is due to. A) Excess nutrients on the surface.B) High temperatures.C) The turbinez of the water at 10 meters.D) The availability of the Light. III. Part of the energy that is not transferred to subsequent trophic levels is used by organisms for their vital processes. What happens to the remaining energy? A) is used in reproduction.B) It is removed as heat.C) It is stored as a reserve of nutrients.D) It is stored as body tissue.Every type of organism in the upper ocean contributes to both recycling of organic matter and sinking of organic matter. Briefly describe 2 interactions between organisms that result in both the recycling and sinking of organic matter. a) Interaction 1: - Brief description of how this interaction results in both the recycling of organic matter in the upper ocean and the sinking of organic matter: b) Interaction 2: - Brief description of how this interaction results in both the recycling of organic matter in the upper ocean and the sinking of organic matter:.
- Father's Genes Hemophilia is a sex-linked, recessive trait. Which of the following describes the probability of hemophilia in the offspring of a man who does not have hemophilia and a woman who is a heterozygous carrier? You may use a Punnett Square like the one below to find your answer There is a 0% chance that their daughters will have hemophilia O There is a 50% chance that their daughters will have hemophilia There is a 25% chance that their sons will have hemophilia There is a 100% chance that their sons will have hemophilia O o oWhich of the following statements is correct? A) Microorganisms are significant contributors to the total biomass on Earth. B) Microorganisms represent a much smaller amount of Earth's biomass than plants. C) Microorganisms represent a much smaller amount of Earth's biomass than animals. D) Microorganisms are significant in number, but not in overall biomass.Which of the following could be an effect of an excess ofsewage running into a freshwater reservoir?(a) It could cause the water to become polluted and nonpo-table.(b) It could cause an increase in the biological oxygen de-mand (BOD).(c) It could cause oxygen depletion, leading to an increasein the anaerobic microbial population.(d) Large quantities of organic wastes could be left behind,killing off many plants and animals or causing animalsto migrate.(e) All of the above.
- What result can a river with an inflow of domestic sewage rich in organic waste can give?A food consumer stored their food at 4 degree celsius without washing, hoping to preserve it for a few weeks. However, during the first week, it was noticed that the food had degraded and rotted. What are the possible reasons behind this? Write down the names of the possible organisms that may have degraded the food. What are the possible solutions to the problem? (Write down 3 solutions)Biomagnification is the process by which the level of contaminants increase as they move upwards in a food chain. If bivalves in the Chesapeake Bay become contaminated from run-off, which organism will experience the highest level of contamination? a) Bivalves b) Sea duck c) Tundra swan d) Bald eagle