Which of the cellular organelles are enclosed by two cellular membranes?

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#Question id: 34166

#Unit 7. System Physiology – Animal

I. Adrenocortical secretion is controlled primarily by ACTH, from the anterior pituitary, but mineralocorticoid secretion is also subject to independent control by circulating factors.

II. Adrenal medullary hormones work mostly to prepare the body for emergencies, the so-called “fight-or-flight” responses.

III. All three cortical zones secrete corticosterone, but the active enzymatic mechanism for aldosterone biosynthesis is not limited to the zona glomerulosa.

IV. An important function of the zona glomerulosa, in addition to aldosterone synthesis, is the formation of new cortical cells.

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#Question id: 28596

#Unit 2. Cellular Organization

M phase Cyclin–CDKs in budding yeast is?

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#Question id: 32342

#Unit 2. Cellular Organization

Which of the following actin depolymerizing factor, binds along the length of the actin filament provide mechanical stress, weakens the contacts between actin subunits in the filament? 

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#Question id: 11320

#Unit 10. Ecological Principles

What are secondary compounds of plants?

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#Question id: 1400

#Unit 4. Cell Communication and Cell Signaling

Which property is shared by malignant tumor cells and transformed cells in culture?

a. reduced growth factor requirement                        b. attachment-dependent growth

c. loss of actin microfilaments                                    d. altered morphology