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TLS Online TPP Program

#Question id: 2251

Differences between cotransport and active ion transport include

#XL - Q Biochemistry

  1. the directed nature of molecule movement.

  2. the restriction of typical active transporters to movement of ions such as H+, Na+, K+, and Ca2+.

  3. the inability of cotransport to move a molecule against a concentration gradient.

  4. the location of cotransporters peripherally associated with the membrane lipid bilayer.

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TLS Online TPP Program

#Question id: 357

#XL - S Microbiology

What is the concentration of H+ in a solution of 0.1 M NaOH?
TLS Online TPP Program

#Question id: 3766

#XL - Q Biochemistry

Individuals with the disorder xeroderma pigmentosum are hypersensitive to sunlight, and mutations to the DNA in their skin cells are left uncorrected. Why are the mutations not corrected in individuals with this disorder?
TLS Online TPP Program

#Question id: 5088

#XL - T Zoology

 If gastrulation was blocked by an environmental toxin, then ________.
TLS Online TPP Program

#Question id: 5842

#XL - T Zoology

 In homologous recombination in E. coli, the protein that moves along a double-stranded DNA, unwinding the strands ahead of it and degrading them, is:
TLS Online TPP Program

#Question id: 3853

#XL - Q Biochemistry

In E. coli, promoter sequences are located at which of the following position(s) on the template strand?