TLS Online TPP Program

#Question id: 11418


Use the following diagram of five islands formed at around the same time near a particular mainland, as well as MacArthur and Wilson's island equilibrium model principles


Which island would likely have the lowest extinction rate?

#SCPH28 | Zoology
  1. A
  2. B
  3. C
  4. D
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TLS Online TPP Program

#Question id: 5761

#SCPH28 | Zoology

E. coli cells were spread on an agar plate, producing 1000 colonies.  The colonies are replica plated on two agar plates containing the antibiotic kanamycin and one agar plate without antibiotics.  All of the colonies are able to grow on the agar plate without antibiotic but only 4 colonies are able to grow on each of the agar plates containing kanamycin.  You notice that the four colonies that grew on each of the kanamycin containing plates are in the exact same position.  This demonstrates

TLS Online TPP Program

#Question id: 667

#SCPH01 Biochemistry

Which represents the backbone of a protein?

Note: R = amino acid side chain

N = nitrogen

Cα = alpha carbon

C = carbonyl carbon

TLS Online TPP Program

#Question id: 3681

#SCPH06 I Botany

 A mutated E. coli cell carries out and completes DNA replication, but the lagging strands are found to contain more errors than normal. These errors are not found evenly distributed throughout the lagging strands, but are found in clusters. Which enzymatic activity is missing from this cell?

TLS Online TPP Program

#Question id: 1565

#SCPH01 Biochemistry

Which of the following are symptoms of inflammation that might appear in such art?

TLS Online TPP Program

#Question id: 2632

#I Life Science/ Life Sciences Group – I-V

How would transcription of the E. coli trp operon be affected,

I. If Removing sequence 4;

II. Changing several nucleotides in sequence 3 so that it can base-pair with sequence 4 but not with sequence 2;