Which statement below characterizes metabolic pathways?

a. They are a random sequences of reactions.
b. They are always biosynthetic.
c. They are always degradative.
d. They are enzyme-mediated sequences of reactions.
e. They are always linear reactions.


ANSWER: d

Biology & Microbiology

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When gibberellin binds to its receptor, what happens to activate the gibberellin-dependent transcription factor GA-TRXN?  

A.  Ethylene is released. B.  A ubiquitin tag is used to degrade the GA-TRXN inhibitor. C.  A DELLA protein is degraded, freeing the GA-TRXN. D.  A DELLA protein is attached to GA-TRXN to activate it. E.  The gibberellin is transferred to an alternate binding site.

Biology & Microbiology

When an animal's involuntary response to a stimulus becomes associated with another stimulus presented at the same time, this is called ________

a. observational learning b. operant conditioning c. habituation d. classical conditioning

Biology & Microbiology

The multifactorial threshold model is helpful in genetic counseling to predict recurrence risks. Indicate whether the statement is true or false

Biology & Microbiology

With which organelle(s) do chloroplasts share many similarities?

a. the lysosomes b. the rough endoplasmic reticulum c. the mitochondria d. the nucleus

Biology & Microbiology