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TLS Online TPP Program

#Question id: 3766

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?

#Section 3: Genetics, Cellular and Molecular Biology

  1. The disorder makes cells unable to replicate DNA.

  2. The disorder causes mitosis to stop during metaphase.

  3. The disorder makes cells unable to form chromosomes.

  4. The disorder causes cells to be unable to repair thymine dimers.

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TLS Online TPP Program

#Question id: 2139

#Section 2: General Biology

A process not involving the fusion of two membranes or two regions of the same membrane is:
TLS Online TPP Program

#Question id: 2140

#Section 2: General Biology

According to the current model for HIV infection, which of the following is not involved in the process of membrane fusion?
TLS Online TPP Program

#Question id: 2141

#Section 2: General Biology

Facilitated diffusion through a biological membrane is:
TLS Online TPP Program

#Question id: 2142

#Section 2: General Biology

Glucose transport into erythrocytes is an example of
TLS Online TPP Program

#Question id: 2143

#Section 2: General Biology

For the process of solute transport, the constant Kt is:
TLS Online TPP Program

#Question id: 2144

#Section 2: General Biology

The type of membrane transport that uses ion gradients as the energy source is: