Practice Questions

  1. Home
  2. Free Resources
  3. Practice Questions
  4. 761
TLS Online TPP Program

#Question id: 779

Which is TRUE of the following statements?

#Unit 1. Molecules and their Interaction Relevant to Biology

  1. A microRNA normally works by binding to perfectly complementary sequences within an RNA transcript, usually a mRNA.

  2. A single type of mRNA can be regulated by multiple different miRNAs.

  3. A single miRNA normally binds to transcripts from just one target gene.

  4. MicroRNAs normally regulate the expression of just a single gene.

More Questions
TLS Online TPP Program

#Question id: 10364

#Unit 6. System Physiology – Plant

Which of the following is the most common type of symbiosis occurs between members of the plant family and soil bacteria?
TLS Online TPP Program

#Question id: 10365

#Unit 6. System Physiology – Plant

Why the nitrogenase enzymes catalyzes the nitrogen fixation reaction only in microanaerobic or anaerobic conditions?
TLS Online TPP Program

#Question id: 10366

#Unit 6. System Physiology – Plant

Cyanobacteria can fixes nitrogen in an anaerobic conditions. Which of the following statements about heterocyst which is specialized cell of blue-green algae is incorrect?
TLS Online TPP Program

#Question id: 10367

#Unit 6. System Physiology – Plant

Cyanobcteria also fixes nitrogen under anaerobic conditions without  heterocyst where?
TLS Online TPP Program

#Question id: 10368

#Unit 6. System Physiology – Plant

Free-living bacteria that are capable of fixing nitrogen are aerobic, facultative, or anaerobic. Some of the Aerobic nitrogen-fixing bacteria such as
TLS Online TPP Program

#Question id: 10369

#Unit 6. System Physiology – Plant

Which type of the nitrogen-fixing bacteria are thought to maintain a low oxygen concentration (microaerobic conditions) through their high levels of respiration