What is the relationship between a pair of homologous chromosomes?
What will be an ideal response?
Answer: They are a karyotype. They have the same centromere position and length but have different DNA on their homologues. Eventually, they separate in Independent Assortment
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What part of the E. coli T4 phage attaches to the host cell receptors?
A. Capsid fragments around the nucleic acid B. Protein fibers at the end of the phage tail C. Pili of the envelope D. Spikes of the envelope
When cAMP is produced in a cell, it will then ______.
A. dephosphorylate proteins phosphorylated by protein kinase A B. bind to a repressor of protein kinase A C. inhibit protein kinase A D. increase transcription of protein kinase A E. serve as a substrate of protein kinase A
What formula correctly represents the behavior of CO2 in the blood?
A. CO2 + H2O « H2CO3 + CO B. CO2 + H+ « HCO3+ « H2O + H2CO3 C. CO2 + HCO3- « H+ + H2O + H2CO3 D. CO2 + H2O « H2CO3 « HCO3- + H+ E. CO2 + H2CO3 + O2 « H2O + CO2 + H2CO3
If you touch a hot pan while cooking, this is detected by __________, and the smell of the
cooking food is detected by __________.
a. thermoreceptors; chemoreceptors b. pain receptors; mechanoreceptors c. mechanoreceptors; chemoreceptors d. chemoreceptors; photoreceptors