Practice Questions

TLS Online TPP Program

#Question id: 2920

Which of the following statements is INCORRECT with respect to the organization and content of the human genome?

#Unit 2. Cellular Organization

More than 60% of the human genome is composed of intergenic sequences, and much of this DNA has no known function.
The most common microsatellite sequences are dinucleotide repeats (e.g., CACACACACACACACA). They represent nearly 5% of the human genome.
Genome-wide repeats are much larger than their microsatellite counterparts. Each genome-wide repeat unit is >100 bp in length and many are >1 kb.
Pseudogenes arise from the action of an enzyme called reverse transcriptase. This enzyme copies RNA into double-stranded DNA (referred to as copy DNA or cDNA).

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TLS Online TPP Program

#Question id: 6965

#Unit 5. Developmental Biology

what type of cleavage is used in frog embryos?

TLS Online TPP Program

#Question id: 18909

#Unit 13. Methods in Biology

What is the compound X-gal?

TLS Online TPP Program

#Question id: 28039

#Unit 1. Molecules and their Interaction Relevant to Biology

Proteins particularly those with molecular masses >100 kD, consist of more than one polypeptide chain. These polypeptide subunits associate with a specific geometry. The spatial arrangement of these subunits is known as

TLS Online TPP Program

#Question id: 11385

#Unit 10. Ecological Principles

Which of the following biomes is correctly paired with the description of its climate?

A) savanna-low temperature, precipitation uniform during the year

B) tundra-long summers, mild winters

C) Taiga-relatively short growing season, Low precipitation

D) temperate grasslands-relatively warm winters, most rainfall in summer

E) tropical forests-nearly constant day length and temperature

TLS Online TPP Program

#Question id: 28884

#Unit 4. Cell Communication and Cell Signaling