Within a gymnosperm megasporangium, what is the correct sequence in which the following should appear during development, assuming that fertilization occurs? 

1. Sporophyte embryo 2. female gametophyte 

3. egg cell                 4. megaspore 

TLS Online TPP Program

#Question id: 4448

#Unit 3. Fundamental Processes

Three defined steps in a transcription cycle; choose correct one

1a. Closed complex	In this form, the DNA remains double-stranded, and the enzyme is bound to one face of the helix. I
1b. Open complex	In which the DNA strands separate over a distance of 13 bp around the start site to form the transcription bubble. In the next stage of initiation,
2. Promoter escape	Incorporation of the first 10 or so ribonucleotides is a rather inefficient process, and at that stage, the enzyme often releases short transcripts and then begins synthesis again
3. Initial transcribing complex.	Once an enzyme makes a transcript longer than 10 nucleotides, it is said to have

TLS Online TPP Program

#Question id: 671

#Unit 1. Molecules and their Interaction Relevant to Biology

Which was a major scientific accomplishment by Linus Pauling?

TLS Online TPP Program

#Question id: 5371

#Unit 8. Inheritance Biology

The trait represented in the following pedigree (shaded symbols) is known to be inherited as a single dominant gene. Calculate the probability of the trait appearing in the offspring if the first cousins should marry and have children.

TLS Online TPP Program

#Question id: 21806

#Unit 12. Applied Biology

Which one of the following is a type of oxidative biomarker?

1. Prostate-specific antigen

 2.Hydrogen peroxide

3. Epidermal growth factor receptor

Which of the following is correct?

TLS Online TPP Program

#Question id: 15862

#Unit 12. Applied Biology

 What is an explant?