Serine is the precursor of glycine through removal of a carbon atom by 

TLS Online TPP Program

#Question id: 34179

#Unit 3. Fundamental Processes

A. At the replication fork, the dsDNA in front of the fork becomes increasingly positively supercoiled.

B. At the replication fork, the dsDNA in front of the fork becomes increasingly negatively supercoiled.

C. The “swivelase” that prevents the accumulation of positive supercoils ahead of the replication fork.

D. The “swivelase” that prevents the accumulation of negative supercoils ahead of the replication fork.

Which of the following combination of statements is correct

TLS Online TPP Program

#Question id: 10395

#Unit 6. System Physiology – Plant

Which of the following responses is not shown Photoreversibility and Reciprocity?

TLS Online TPP Program

#Question id: 10859

#Unit 10. Ecological Principles

Plants that depend upon ants to spread their seeds

TLS Online TPP Program

#Question id: 4223

#Unit 3. Fundamental Processes

Use the figure to answer the question. Refer to the metabolic pathway illustrated. If A, B, and C are all required for growth, a strain that is mutant for the gene-encoding enzyme A would be able to grow on medium supplemented with which of the following nutrient(s)?

TLS Online TPP Program

#Question id: 2559

#Unit 2. Cellular Organization

Even though plants cells carry out photosynthesis, they still use their mitochondria for oxidation of pyruvate. Under what conditions will plant cell mitochondria be active in this process?