As the two strands of the double helix are separated, the positive supercoiling interferes with the further unwinding of DNA. Which of the following enzyme makes a break in a strand of DNA to release the supercoiling and facilitate the replication to occur?

TLS Online TPP Program

#Question id: 12159

#XL - R Botany

You are given the task of designing an aerobic, mixotrophic protist that can perform photosynthesis in fairly deep water (e.g., 250 m deep), and can also crawl about and engulf small particles. With which two of these structures would you provide your protist?

1. hydrogenosome

2. apicoplast

3. pseudopods

4. chloroplast from red alga

5. chloroplast from green alga

TLS Online TPP Program

#Question id: 2112

#XL - S Microbiology

According to the fluid mosaic model, a membrane:

TLS Online TPP Program

#Question id: 4971

#XL - S Microbiology

On the basis of their morphologies, how might Linnaeus have classified the Hawaiian silverswords?

TLS Online TPP Program

#Question id: 19523

#XL - P Chemistry

Which of the following is given to a fuel cell’s cathode?

TLS Online TPP Program

#Question id: 427

#XL - S Microbiology

The degradation of which class of biochemicals does not significantly contribute to the release of energy to cells?