Term
| the central control for homeostasis in the mammalian body is? |
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Definition
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Term
| The pituitary is the major hormone producing organ of the brain, but does not produce what? Antidiuretic, prolactin, estrogen or FSH... |
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Definition
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Term
| in the delicate balance of insulin and glucagon regulating blood sugar levels? |
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Definition
| insulin stimulates muscle cells to take up and utilize glucose |
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Term
| Pitocin is a synthetic version of oxytocin and is used in which context? |
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Definition
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| the order of occurrence of hormones during the monthly human female menstual cycle, in the absence of implanting in the uterus, is... |
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Definition
| follicle stimulating hormone, estrogen, leutenizing hormone, progesterone |
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Term
| although we are concerned about build up of carbon dioxide inthe atmoshpere for its effects on global warming carbon dioxide is actually a minor component of the atmosphere, comprising only about what % of molecules in air |
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Definition
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Term
| the exchange of both oxygen and carbon dioxide across the cell membrane |
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Definition
| occurs by simple diffusion |
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Term
| in counter-current blood flow involved in respiration fro example in fish gills... |
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Definition
| blood that is richest in oxygen encounters water richest in oxygen |
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Definition
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Term
| altitude sickness results primarily from |
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Definition
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Term
| the surface area of which part of the digestive system is great increased by folds and villi? |
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Definition
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Term
| proteins are broken down into thir constituent amino acids by enzymes like... |
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Definition
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Term
| Metals that have no function in mammalian metabolism are |
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Definition
| mercury, lead and cadmium |
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Term
| while limited vitamin supplements might help with poor diet choices what is also true about them? |
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Definition
| overdosing on A, D, E or K is dangerous because theyare fat soluble and accumulate |
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Term
| Which of the following is NOT a nitrogen-rich excretory product of animals? urea, uric acid, ammonia, amides |
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Definition
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Term
| Molecules leaving the bloodstream in Bowmans capsule include what? |
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Definition
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Term
| the tube connecting the kidneys to the bladder in mammals is called what? |
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Definition
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Term
| the primary role of Bowman's capsule is to what? |
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Definition
| force fluid from blood out throught capillary walls into the nephron |
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Term
| which is NOT a hormone affecting kidney function? |
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Definition
somatotropin
antidiuretic hormone, aldosterone and renin do affect kidney functon |
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Term
| Eukaryotic chromosomes are typically |
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Definition
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Term
| facts about the number of chromosomes in animals species... |
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Definition
- vary widely, even between closely related species
- the australian ant, is the only animal known to have a single chromosome
- the number of chromosomes affect the number of combinations resulting from independent assortment in mitosis
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Term
| the famous image of a condensed chromosome looking like an X is best visible at which stage of mitosis? |
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Definition
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Term
| a humane karyotype picture is organized such that the chromosomes are numbered with |
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Definition
| number 1 being the larges |
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Term
| induced pluripotent stem cells or IPSCs are generated by what |
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Definition
| transiently expressing a new critical transcription factor genes involved in early development in a somatic cell |
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Term
| the primary objective of meiosis is to produce what type of gametes? |
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Definition
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Term
| Unlike in mitosis, during meiosis the two homologous copies of each chromosomeline up with each other during what phase? |
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Definition
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Term
| Cytokinesis is the final splitting of the entire cell into two, after either mitosis or meiosis, it is carried out by what? |
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Definition
| microfilaments containing actin |
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Term
| in femal mammals the process of meiosis from a primary oogonium leads to the production of what? |
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Definition
| a single egg and three polar bodies |
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Term
| a rare exception to the rule that spermatogenesis in males leads to the production of vast numbers of tiny sperm is... |
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Definition
| some drosophila flies that produce only a few sperm per male |
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Term
| variant of gene are know as what? |
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Definition
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Term
| the notion of inheritance of acquired characteristics is primarily creditd to who |
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Definition
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Term
| Gregor Mendel's first major observatin with his pea plants was that... |
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Definition
| the F1 progeny of his crosses allhad the some pheontype as one of the two parents |
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Term
| In the F2 progeny of a mono-hybrid cross, a 3:1 ration of the dominant phenotype to the recessive phenotype is obtained...how many different genotypes are present amont the three quarters of progeny with the dominant phenotype? |
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Definition
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Term
| the first step in solving genetic problems is to what |
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Definition
| figure out all the possible gametes produced by the two parents |
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Term
| the autosomal recessive allele for cystic fibrosis disease is only reasonably common in... |
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Definition
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Term
| the children of someone who develops huntington's disorder late in life a what percent chance of inheriting it? |
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Definition
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Term
| An A blood-type woman can be the mother of children with blood types |
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Definition
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Term
| sex-linked genetic conditions in the human population... |
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Definition
duchene muscular dystrophy, red-green color blindness, hemophilia A...
not sickle cell anemia |
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Term
| which sex-chromosome abnormality proves that non-dysjunction also occurs in the male germline? |
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Definition
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Term
| which process contributes the least to the variety of alleles in a puppy compared to its parents? |
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Definition
mutations
independent assortment
recombination
outbreeding of its parents |
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Term
| the mauritian kestrel was saved from extinction when only two breeding pirs remained, so what is the maximum number of allele that could be present in the resultant populaion of about 20 birds at any autosomal locus |
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Definition
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Term
| a major exception to the rule that all species have vast reservoirs of genetic variation? |
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Definition
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Term
| one of hte most remarkable examples of stabilizine selection is |
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Definition
| almost identical universal genetic code across all life forms |
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Term
| sexual selections often leads to exaggerated characteritics in males becasue typically... |
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Definition
| males are limited in their reproductionby the number of eggs they can fertilize |
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Term
| the modern biological concept of a species was most famously proposed by |
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Definition
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Term
| the number of named species inthe world today is approsimately |
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Definition
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Term
| in the example of pre-mating isolation amongst moths resulting from differential recognition of their pheromones, |
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Definition
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Term
| which of teh following is a sterile hybrid between two species |
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Definition
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Term
| the sterility of hybrids between closely related species |
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Definition
| cannot be the result of direct selection for alleles of genes that influence gametogenesis |
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Term
| Parapatry refers to the situation where two genetically diverging populations |
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Definition
| occur in adjacent regions, generally with a hybrid zone separating them |
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Term
| although sympatric speciation is difficult to document, we think it occurs sometimes in |
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Definition
| insects that have intimate and obligate relatinonships with particular host plants, like the apple-maggot fly |
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Term
| the age of the solar system 4.6 BYA was in part established by radioisotope dating of moon rocks using what |
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Definition
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Term
| during which eon did animals diverge from plants and fungi? |
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Definition
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Term
| the Paleozoic era from 550-250 MYA started with the ___period and ended witht he ___period |
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Definition
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Term
| fossil representatives of most animals phyla are present int he burgess shales deposits from the ___ period |
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Definition
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Term
| the amazing spiked animal fossilized in the Burgess Shales and called Hallucigenia is now thought to be a what |
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Definition
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Term
| all the continents were once merged together around 225 MYA in what is known as the supercontinent |
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Definition
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Term
| the extinction of the dinosaurs at the end of the Cretaceous Period is now thought to be the result of a large asteroid impact, the first evidence for which was a spike of ____ in rocks from the time around the world |
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