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  • Which statement best describes the fertilized egg that would result if this sperm cell and egg cell unite? The diagram at the right represents human gametes.
    Which statement best describes the fertilized egg that would result if this sperm cell and egg cell unite? The diagram at the right represents human gametes.
    It would contain 44 autosomes and develop into female since sperm and ova both have x chromosme

  • How is oxygen used by living organisms?
    How is oxygen used by living organisms?
    Oxygen is vital to living organisms and when it is deficient, portable oxygen units are used to administer oxygen to the patient. In the same way we humans breathe out carbon dioxide, plants absorb it and need it to survive. Humans need oxygen for their cells to keep the body healthy. Without it, food could not release the energy that a body needs to keep living, and for the carbon dioxide, vital for plants but harmful to humans, to be released. In fact, if we do not exercise sufficiently we starve our bodies of oxygen and this is one reason why couch potatoes become sickly. Only planets with oxygen can support life as we know it.

  • A chemical which kills most pathogenic organisms, but does not kill spores.
    A chemical which kills most pathogenic organisms, but does not kill spores.
    HELLO I AM STUDYING FOR MY EXAM CAN YOU GIVE ME SOME POINTERS PLEASE

  • What would most probably occur if plant gene alterations cause the plants to be deficient in photorespiration?
    What would most probably occur if plant gene alterations cause the plants to be deficient in photorespiration?
    Correct answer is option B If there is a gene alteration causing a plant to be deficient in photorespiration there would be more light induced damage to the cells. This is because photorespiration has photo protective effects, preventing light induced damage, it helps maintain redox balance in cells, and also support plant immune defences. First, you need to know that photosynthesis and photorespiration is not the same but they work hand in hand. Photorespiration refers to a process in plant metabolism where the enzyme RuBisCO oxygenates RuBP, wasting some of the energy produced in photosynthesis. It incurs a direct cost of one ATP and one NAD(P)H. Photorespiration reduces the efficiency of photosynthesis. In photorespiration RuBisCO enzyme reacts with oxygen while photosynthesis occurs when RuBisCO enzyme reacts with carbon dioxide.

  • What are the name of 3 categories Mollusks are divided into and give one example of each?
    What are the name of 3 categories Mollusks are divided into and give one example of each?
    the Gastropods made up mostly of snails and slugs. - the Bivalves, a group including clams, scallops, mussels, and oysters. - the Cephalopods, a group including octopus and squid.

  • What is the difference between Zygote and Embryo?
    What is the difference between Zygote and Embryo?
    The terms zygote and embryo are usually incorrectly used by some people as they think they are just the same. But in reality and by looking up at their meanings in the dictionary, they are two different words. The zygote is the first cell of an organism that is produced from sexual reproduction. Embryo, on the other hand, is the multicellular eukaryote in the early stages of an organism’s development. In humans, the embryo starts to develop and is present in the womb after eight weeks of fertilization. The word zygote comes from the Greek word zygotes, which means to join or to have been joined while the embryo is from the Latin word embryo, which means that which grows.

  • Which of the following worms is NOT a Nematoda?
    Which of the following worms is NOT a Nematoda?
    Ring worm is a fungus, not a Nematode. So, although the earthworm is not a nematode, neither is ringworm.

  • Which of the following organisms is most likely to cause infection one year or longer after a hematopoietic stem cell transplant?
    Which of the following organisms is most likely to cause infection one year or longer after a hematopoietic stem cell transplant?
    Varicella-Zoster virus. This is the virus that causes both chicken pox (varicella) and shingles (herpes zoster). This virus can lie dormant in nerve cells and reactivate without warning, and sometimes occurs after a hematopoietic stem cell transplant. Since it can lie dormant for so long, this is a likely cause of infection a year after the transplant. The other options are possible infections that could come from a hematopoietic stem cell transplant, but usually not after so long. Pneumocystis carinii, for example, is an opportunistic fungus that infects immunosuppressed patients, such as those with HIV or those who have recently undergone a hematopoietic stem cell transplant. After the space of a year, though, this infection would be much less likely.

  • Choose the option that best describes the characteristics of the kingdom to which the mushroom belongs:
    Choose the option that best describes the characteristics of the kingdom to which the mushroom belongs:
    Isn't it saprophytic, eukaryotic , multicellular organisms Cause, most fungi can become multicellular. Mushroom is multicellular and saprophytic and a fungi

  • The disease caused by micro-organism which reproduces by multiple fission is known as:
    The disease caused by micro-organism which reproduces by multiple fission is known as:
    Its kala-azar right cuz leishmania reproduces by multiple fission

  • Annelidas are known for what distinct characteristics?
    Annelidas are known for what distinct characteristics?
    Many marine annelids exist, and they do not pass soil through their digestive system.

  • What is the difference between Algae and Protozoa?
    What is the difference between Algae and Protozoa?
    Algae and protozoa are two types of organisms that belong to the kingdom Protista. They have a membrane-bound nucleus since they are eukaryotic organisms and both can be unicellular. They have a difference, however, that make them distinct from each other. Protozoa are heterotrophic, meaning they utilize organic as their source of carbon since they are unable to fix carbon that is inorganic. Algae, on the other hand, are autotrophic; they can gain organic nutrients from simple inorganic substances such as carbon dioxide. Protozoa do not contain chlorophyll so they ingest food particles by phagocytosis while algae contain chlorophyll thus they are able to produce their own food by the process of photosynthesis. Protozoa can cause certain diseases in humans whereas algae may produce toxins that can be harmful to humans and other organisms as well.

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