Practice Questions

TLS Online TPP Program

#Question id: 863

Ubiquitinated proteins are proteolytically degraded in an ATP-dependent process mediated by a large (∼2500 kD, 26S) multiprotein complex named the 26S proteasome;

#Unit 1. Molecules and their Interaction Relevant to Biology

A hollow cylindrical core, known as the 20S proteasome, which is covered at one or both ends by a 19S cap.
The yeast 20S proteasome, which is closely similar to other eukaryotic 20S proteasomes, is composed of Ten different types of α-like subunits.
The yeast 20S proteasome, which is closely similar to other eukaryotic 20S proteasomes, is composed of seven different types of α-like subunits and seven different types of β-like subunits.
The α-type subunits and the β-type subunits are structurally similar, only three of the β-type subunits have proteolytic activity.

Choose any one incorrect option.

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TLS Online TPP Program

#Question id: 2749

#Unit 2. Cellular Organization

Approximately what proportion of the human genome is made up of repetitive DNA sequences?

TLS Online TPP Program

#Question id: 5698

#Unit 8. Inheritance Biology

A mechanism that can cause a gene to move from one linkage group to another is

TLS Online TPP Program

#Question id: 10246

#Unit 10. Ecological Principles

Under an ideal free distribution:

TLS Online TPP Program

#Question id: 15339

#Unit 4. Cell Communication and Cell Signaling

HSCs begin their life in close contact with osteoblasts located close to the lining of the endosteal cavity. Once differentiated to the pre-pro-B-cell stage, the developing B cells require Which type of signals from the chemokine, which is secreted by a specialized set of stromal cells?

TLS Online TPP Program

#Question id: 23666

#Unit 13. Methods in Biology

Which is not necessary as part of an expression vector used in E. coli?