Some DNA sequences in our cells have high frequencies of methylated cytosines (hypermethylation); some others have a low frequency of methylated cytosines (hypomethylation). Which of the two methylation states best describes the kind of sequences listed below? 

 I. Satellite DNA in pericentromeric heterochromatin

II. Promoters 

III. Dispersed transposon repeats

IV. CpG islands 

V. Enhancers

TLS Online TPP Program

#Question id: 2362

#Unit 2. Cellular Organization

Before a cell divides, the centrioles ______

TLS Online TPP Program

#Question id: 2363

#Unit 2. Cellular Organization

Cells lining the respiratory tract contain ______ that help keep the lungs clear of particles.

TLS Online TPP Program

#Question id: 2364

#Unit 2. Cellular Organization

An enzyme's specificity is caused by the ______ of the active site.

TLS Online TPP Program

#Question id: 2365

#Unit 2. Cellular Organization

A denatured enzyme no longer has its usual ______ .

TLS Online TPP Program

#Question id: 2366

#Unit 2. Cellular Organization

The vitamin ______ is part of the coenzyme NAD

TLS Online TPP Program

#Question id: 2367

#Unit 2. Cellular Organization

Glycolysis occurs ______