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TLS Online TPP Program

#Question id: 5088

 If gastrulation was blocked by an environmental toxin, then ________.

#Unit 5. Developmental Biology

  1. cleavage would not occur in the zygote

  2. embryonic germ layers would not form

  3. the blastula would not be formed

  4. the blastopore would form above the gray crescent in the animal pole

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TLS Online TPP Program

#Question id: 20715

#Unit 12. Applied Biology

Under anaerobic conditions microbial electron transfer and respiration can proceed only if
TLS Online TPP Program

#Question id: 15677

#Unit 2. Cellular Organization

Ultraviolet (UV) radiation around 260 nm is quite lethal but does not penetrate
1. glass 
2. dirt films 
3. Water
March the correct answer
TLS Online TPP Program

#Question id: 16089

#Unit 7. System Physiology – Animal

Non-shivering thermogenesis
TLS Online TPP Program

#Question id: 2068

#Unit 2. Cellular Organization

Which of the following molecules dramatically increases the rate of diffusion of water across cell membranes?
TLS Online TPP Program

#Question id: 1287

#Unit 4. Cell Communication and Cell Signaling

Biological roles of proteoglycans and hyaluronan include all of the following, except: