Which of the following stage of chromosome are highly organized and reproducible ultrastructure

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#Question id: 12699

#Unit 7. System Physiology – Animal

The following test results were obtained: urine flow rate = 2.0 ml/min; urine inulin concentration = 60 mg/ml; plasma inulin concentration = 2 mg/ml; urine potassium concentration = 20 μmol/ml; plasma potassium concentration = 4.0 μmol/ml; urine osmolarity = 150 mOsm/L; and plasma osmolarity = 300 mOsm/L. What is the free water clearance rate?

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#Question id: 7168

#Unit 5. Developmental Biology

Which one of the following signaling pathways will best support the mediolateral intercalation in the formation of the primitive streak in chick?

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#Question id: 7198

#Unit 5. Developmental Biology

Which of following graphs correctly represents ectoderm biased to become neural ectoderm in xenopus.

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#Question id: 2236

#Unit 2. Cellular Organization

The partition coefficient K, the equilibrium constant for partitioning between oil and water, for butyric acid is about 10^–2, and for 1,4-butanediol it is about 10^–4.  You add liposomes containing only water to a solution with an initial concentration of 1 mM butyric acid and 100 mM 1,4-butanediol outside the liposomes.  What is the relative rate of diffusion of the two substances into the liposome interior?

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#Question id: 33272

#Unit 2. Cellular Organization

The association of Cdt1 with a protein at active replication forks stimulates Cdt1 ubiquitylation & degradation called: