Practice Questions

TLS Online TPP Program

#Question id: 3921

Which observation is not evidence that supports the theory that mitochondria and chloroplasts originate from symbiotic bacteria?

#Unit 3. Fundamental Processes

Genes for both mitochondrial and chloroplast RNA polymerase are encoded in the DNA of these organelles.
Both mitochondria and chloroplasts are about the same size as bacterial cells.
Chloroplast RNA polymerase is similar in sequence to that of cyanobacteria.
Both mitochondria and chloroplasts have their own DNA.

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TLS Online TPP Program

#Question id: 28261

#Unit 5. Developmental Biology

Two major mechanisms during fertilization in case of sea urchin, sperm attraction and sperm activation, these mechanism is occurred ____

TLS Online TPP Program

#Question id: 28262

#Unit 5. Developmental Biology

sperms are attracted toward eggs of their species by following a gradient of a chemical secreted by the egg this phenomenon is known as____

TLS Online TPP Program

#Question id: 28263

#Unit 5. Developmental Biology

In case of Sea urchin, during the phenomenon of chemotaxis provide a direction towards the sperm by____

TLS Online TPP Program

#Question id: 28264

#Unit 5. Developmental Biology

In case of sea urchin (Arbacia punctulata ) sperm direction is provided by____

TLS Online TPP Program

#Question id: 28265

#Unit 5. Developmental Biology

Resact is a___

TLS Online TPP Program

#Question id: 28266

#Unit 5. Developmental Biology

SAP in the egg jelly of, Strongylocentrotus purpuratus is called___