What family of proteins plays an essential role in the repression of genes that help to direct the formation of specific tissues and organs in a developing embryo?

#Question id: 3036

#Unit 2. Cellular Organization

During which phase would penicillin, an antibiotic that inhibits cell-wall synthesis, be most effective?

#Question id: 11844

#Unit 6. System Physiology – Plant

The following statements are made to describe the biosynthetic pathway of IAA;

a)  IPA pathway involves a deamination reaction to form IPA, followed by a decarboxylation reaction to form indole-3-acetaldehyde (IAld) and then oxidized to IAA by a specific dehydrogenase

b) IAN pathway is similar to the IPA pathway, except that the order of the deamination and decarboxylation reactions is reversed, and different enzymes are involved

c) IAM pathway  involves the two enzymes  tryptophan monooxygenase and IAM hydrolase

d) In the IAN pathway, tryptophan is first converted to indole-3-acetaldoxime and then to indole-3-acetonitrile. The enzyme that converts IAN to IAA is called nitrilase

Which of the following is the correct  statements  of about the biosynthesis of  IAA?

#Question id: 11134

#Unit 7. System Physiology – Animal

Which of the following statements concerning synaptic transmission is correct?

#Question id: 5553

#Unit 5. Developmental Biology

The notochord is a ___ structure in vertebrate embryos that lies under the ___, and is bordered by ___.

#Question id: 19879

#Unit 13. Methods in Biology