The time between 7 and 8 0, clock, correct to the nearest minute, when the hands of a clock will form an angle of 84 degrees are:

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#Question id: 12477

#Unit 10. Ecological Principles

A table listing such items as age, observed number of organisms alive each year, and life expectancy is known as a (an)

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#Question id: 568

#Unit 1. Molecules and their Interaction Relevant to Biology

Which of the following statements about allosteric control of enzymatic activity is false?

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#Question id: 2270

#Unit 2. Cellular Organization

With which of the following are basal bodies not associated?

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#Question id: 12296

#Unit 10. Ecological Principles

When calculating population growth rate, the symbol r refers to ________________.

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#Question id: 14740

#Unit 4. Cell Communication and Cell Signaling

Rod cells sense light with the aid of a light-sensitive GPCR known as rhodopsin; choose incorrect statements

a. Rhodopsin consists of the protein opsin, which has the usual seven–transmembrane segment GPCR structure, covalently linked to a light-absorbing pigment called retinal. 

b. Rhodopsin, found only in rod cells, is localized to the thousand or so flattened membrane disks that make up the inner segment of each of these rod-shaped cells.

c. A human rod cell contains about 4 × 10⁷ molecules of rhodopsin. 

d. The heterotrimeric G protein coupled to rhodopsin, called transducin (Gt), contains a Gα unit referred to as Gαt; like rhodopsin, Gαt is found only in rod cells.