• A student used red blood cells to carry out a investigation into cell membranes.?

    Your answer: 
    a student used red blood cells to carry out a investigation into cell membranes. red blood cels were placed in salt soloutuom at 3 diffrent concentrations. a sample of red blood cell was removed from each cpncentration and placed on a microscope slide. at 0.0 concention of salt soloution the rbc swelled and burst. at 0.9 concentrarom the rbc... show more
    1 week ago
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  • Diagram and label the chloroplast?

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    1 week ago
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  • What makes Botulinum so very much toxic?

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    1 week ago
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  • Is it possible to 3D print ivory?

    Your answer: 
    I'm just curious about this. I know people can 3D print organs and things like that, but could it also be possible to print real ivory? I mean like if you print the same chemical composition in real ivory? I'm really no good at wording This, but I'd like to know what you guys think.
    1 week ago
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  • The production of ATP by substrate-level phosphorylation occurs when:?

    Your answer: 
    a) ATP synthesis is directly coupled to one of the steps of glycolysis or the citric acid cycle b) protons are transported across the inner mitochondrial membrane by ATP synthase c) phosphate groups are added to proteins by kinases d) all of the above e) none of the above
    1 week ago
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  • Multiple choice question on mitotic spindle?

    Your answer: 
    a) composed of mictrotubles b) composed of microfilaments c) required for chromosomal separation during mitosis d) required for axonal transport e) a&c
    2 weeks ago
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  • Which of the following statements about the electron transport chain are false?

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    a) NADH-Q reductase pumps protons into the inter-membrane space of the mitochondria b) NADH-Q reductase pumps protons into the mitochondrial matrix c) NADH-Q reductase reduces NAD+ and oxidizes ubiquione d) b and c
    2 weeks ago
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  • Allopolyploid question?

    Your answer: 
    Plant species A has a diploid number of 12. Plant species B has a diploid number of 16. A new species, C, arises as an allopolyploid from A and B. The diploid number for species C would probably be a) 12 b) 14 c) 16 d) 28 I’m confused about the impact an allopolyploid would have during meiosis and I’m getting more confused. All I know is an... show more
    2 weeks ago
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  • During a muscle twitch in skeletal muscle...?

    Your answer: 
    a. the thick myofilaments shorten b. each myosin cross-bridge contracts only once c. actin functions as an ATPase d. Tropomyosin releases calcium and binds with ATP e. none of the above ?????
    2 weeks ago
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  • Why does the Mariana Snailfish have what look like eyes?

    Your answer: 
    This species lives well below where light can penatrate yet in photos of the fish, they have what look like black beady eyes. Are these even functional? And if so, what for? To see luminescent fish?
    2 weeks ago
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  • What is the significance of using a three-nucleotide sequence in the codons found in the DNA of genes, mRNA and tRNA?

    Your answer: 
    There are 22 proteinogenic amino acids, the building blocks of all the proteins in living organisms. What is the significance of using a three-nucleotide sequence in the codons found in the DNA of genes, mRNA and tRNA?
    2 weeks ago
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  • What is the marine life like ?

    Your answer: 
    I’m currently navy active duty and I’m curious how the marine life is on infantry because im interested in doing it. The whole physical part is not a problem since I make it routine to work out and have gotten pretty fit and almost max of pfa scores for the navy. And I’m curious on how marine bootcamp is since I won’t get a real answer from a... show more
    2 weeks ago
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  • DNA and farts?

    Your answer: 
    does dna contribute to how much you fart cause i think i have farty genes
    2 weeks ago
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