A ribosome has one binding site for mRNA and two binding sites for tRNAs

__________________ Indicate whether the statement is true or false.


False - three

Biology & Microbiology

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Organic compounds are distinguished by molecules that contain ________ bonded to other elements.

A. nitrogen B. hydrogen C. oxygen D. carbon

Biology & Microbiology

Only proteins can act as cellular catalysts

1.True 2.False

Biology & Microbiology

All of following statements are TRUE regarding estrogen and progesterone, EXCEPT which one?

A) They are produced and secreted by the ovaries in response to hormones from the anterior pituitary gland. B) They are released during a female's reproductive years. C) They are peptide hormones that activate target cells through the cyclic AMP second messenger mechanism. D) They regulate the menstrual cycle. E) They stimulate development of female secondary sex characteristics.

Biology & Microbiology

Most herbivorous animals do not have the ability to digest the cellulose in plants. What mechanism has evolved in the absence of this ability that allows them to survive despite eating only plant matter?

A) production of saliva containing amylase B) digestion by symbiotic microorganisms C) avoidance of plants containing cellulose D) converting cellulose to other carbohydrates in the animal's own cells

Biology & Microbiology