provided the information on the mussels ability to tie down the predatory snails and information on the mussels behavior of forming mussels beds. It also has the information regarding how the mussel bed is favorable to the fertilization of the sperm and egg of the mussel.
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systems share many similarities and many differences. . Each system has different parts‚ problems and care. Each system has different purposes‚ the male reproductive system’s function is to produce sperm‚ while the female reproductive system’s function is to produce ova‚ store ova and house a fertilized egg. The effects of various hormones modulate both. Some of these include gonadotropin-releasing hormone‚ follicle-stimulating hormone‚ and luteinizing hormone. The female reproductive system is a
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There are no multicellular plants in the oceans Most are photosynthetic single cells Cambrian is in Paleozoic era Called Cambrian explosion‚ because in this 70 million years. We have an explosion of every multicellular organism. Wednesday October 31st‚ 2012 CAMBRIAN Phanerozoic Eon Eras: Paleozoic (most recent : 550 Ma until now) – multicellular organisms in the oceans The periods in the Paleozoic era are: Cambrian Ordovician: end is one of the 5 mass extinctions. So many organisms
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After puberty‚ the female produces an egg each month. Other changes take place on a cyclic basis including the uterus lining and hormone levels. These changes are called the menstrual cycle. Follicle stimulating hormone (FSH) from the pituitary gland stimulates the growth of follicles in the ovary. Follicles produce oestrogen that stimulates the pituitary to produce leutinising hormone (LH). As LH increases the size of the follicle increases until an egg is released. The corpus luteum formed in
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language‚ which I agree completely. As can be noted in the text‚ by describing that an egg merely “drifts” through the fallopian tube while the sperm travels in a great “velocity” can subconsciously send the message that‚ even in biological terms‚ women are still weak and fragile while men are strong and powerful. As was also described in class‚ the penetrating aspect that “occurs” when the sperm binds to the egg‚ I thought‚ was a great observation because it reveals that in almost any context‚ the
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Life Processes Mrs.Nerg/Gren Living things have certain life processes in common. There are seven things that they need to do to count as being alive. The phrase MRS GREN is a way to remember them M Movement All living things move‚ even plants R Respiration Getting energy from food S Sensitivity Detecting changes in the surroundings G Growth All living things grow R Reproduction Making more living things of the same type E Excretion Getting rid of waste N Nutrition Taking in and using
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In Vitro Fertilization procedure‚ the eggs of the woman’s ovaries are collected and mixed with the man’s sperm in a laboratory. According to the same research‚ couples who may benefit from the IVF treatment are woman who contains factors such as; damaged or blocked fallopian tubes‚ ovaries are unresponsive to fertility medications‚ immunological factors‚ and endometriosis related infertility. Or man who contain factors such as; poor sperm motility‚ low sperm count‚ and “unexplained”
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transferred into gametes‚ or the reproductive sex cells‚ like the sperm and the egg. Then‚ during reproduction‚ the mutant gametes get transferred on to the new organisms DNA. Although both parents have mutations that they pass on to the child‚ most of the mutations come from the dad. While females are born with all of the eggs they will need in their lifetime‚ males constantly are making sperm cells. This constant replenishment of sperm causes more opportunities for a mutation to be transferred into
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diuresis Relating to Meaning of Word Key Term Spermatogenesis Prefixes Roots Suffixes Word Dissection sperm genesis Meaning of Parts sperm Production of Meaning of Word Production of sperm Key Term Oogenesis Prefixes Roots Suffixes Word Dissection oo genesis Meaning of Parts eggs Production of Meaning of Word Production of eggs Key Term Endometrium Prefixes Roots Suffixes Word Dissection endo metr um Meaning of Parts within uterus
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tightly coiled seminiferous tubules. a. The seminiferous tubules of each lobe empty sperm into another set of tubules‚ the rete testis‚ located at one side of the testis. Sperm travel through the rete testis to enter the first part of the duct system‚ the epididymis‚ which hugs the external surface of the testis. The interstitial cells produce androgens-the most important of which testosterone. Thus sperm-producing and hormone producing functions of the testes are carried out by completely different
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