Which of the following is a peptide hormone?
A) melatonin B) progesterone C) estrogen D) adrenaline E) glucagon
Answer: E
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What is plant tissue culture?
What will be an ideal response?
Many insects undergo ________, a stage of arrested development in their life cycle from which they emerge when conditions improve
Fill in the blank(s) with correct word
What feature of a dinosaur determines whether it is a saurischian or an ornithischian dinosaur?
a. size b. habitat c. feeding preference d. pelvic bone structure e. number of feet it walks on
Which of the following is characteristic of ciliates?
A) They use pseudopods as feeding structures. B) They are often multinucleate. C) They can exchange genetic material with other ciliates by the process of mitosis. D) Most live as solitary autotrophs in fresh water.