#Question id: 4172
#Unit 3. Fundamental Processes
Which statement is true about the number of initiation and STOP codons?
#Question id: 595
#Unit 1. Molecules and their Interaction Relevant to Biology
It is difficult to determine either Km or Vmax from a graph of velocity vs. substrate concentration because
#Question id: 5678
#Unit 5. Developmental Biology
Following process and their mechanism during fertilization in mammals.
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a. Rheotaxis |
i.A sensing mechanism in which, the oocyte and its accompanying cumulus cells secrete molecules that attract capacitated sperm toward the egg during the last stages of sperm migration |
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b. Chemotaxis |
ii.It is a transient event, and sperm are given a relatively brief window of competence during which they can successfully fertilize the egg. |
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c. Capacitation |
iii.it is the ability to sense temperature difference and preferentially swim from cooler to warmer sites is found only in capacitated sperm. |
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d. Thermotaxis |
iv.Sperm receive long-distance directional cues from the flow of liquid from the oviduct to the uterus and they will migrate against the direction of the flow—using CatSper calcium channels to sense calcium influx and monitor the direction of the current |
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Which of the following option is correct?
#Question id: 397
#Unit 1. Molecules and their Interaction Relevant to Biology
The loss of water from a plant by transpiration cools the leaf. Movement of water in transpiration requires both adhesion to the conducting walls and wood fibers of the plant and cohesion of the molecules to each other. A scientist wanted to increase the rate of transpiration of a crop species to extend its range into warmer climates. The scientist substituted a nonpolar solution with an atomic mass similar to that of water for hydrating the plants. What do you expect the scientist's data will indicate from this experiment?
#Question id: 4908
#Unit 8. Inheritance Biology
Shell coiling of the snail is maternal effect phenotype control by S gene, where S Dextral is dominant over s sinistral. If snail sinistral coiled shell, which of the following statement is true