White-breasted nuthatches and Downy woodpeckers both eat insects that hide in the furrows of bark in hardwood trees. The Downy woodpecker searches for insects by hunting from the bottom of the tree trunk to the top, while the White-breasted nuthatch searches from the top of the trunk down. These hunting behaviours best illustrate which of the following ecological concepts?

TLS Online TPP Program

#Question id: 33513

#Unit 2. Cellular Organization

Which one of the following statements regarding mutations in the mitochondria during aging is INCORRECT?

TLS Online TPP Program

#Question id: 33514

#Unit 2. Cellular Organization

The rate at which mammalian mitochondrial DNA accumulates mutations is 4% per million years and if mitochondrial genome is 16000 bp long then how many base pairs will be changed after 2 million years.

TLS Online TPP Program

#Question id: 33515

#Unit 2. Cellular Organization

A. Mitochondrial genomes vary in total size by more than an order of magnitude. 

B. Animal cells have larger mitochondrial genomes. 

C. There are several hundred mitochondria per cell and each mitochondrion has multiple copies of the DNA. 

D. The total amount of mitochondrial DNA relative to nuclear DNA is small; it is estimated to be 10%.

Find correct order of true and false statements

TLS Online TPP Program

#Question id: 33516

#Unit 2. Cellular Organization

human mitochondrial DNA is descended from a 

TLS Online TPP Program

#Question id: 33517

#Unit 2. Cellular Organization

If an average length of E. coli peptide is 300 amino acid. How many genes are approximately there in E. coli genome?

TLS Online TPP Program

#Question id: 33518

#Unit 2. Cellular Organization

A. A powerful way to validate gene structure is to compare sequences in closely related species.

B. If a gene is functional, it is likely to be conserved.

C. The fruit fly genome is larger than the nematode worm genome

D. Eukaryotic polypeptide sizes are greater than those of prokaryotes.

Find true and false statements