In which of the following cells would you expect to find the most mitochondria?

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#Question id: 5086

#XL - T Zoology

Cells move to new positions as an embryo establishes its three germ tissue layers during ________.

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#Question id: 9277

#XL - Q Biochemistry

The light energy absorbed by the carotenoids is transferred to chlorophyll for photosynthesis; because of this role they are called

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#Question id: 14977

#XL - S Microbiology

Careful electron microscopic studies often have shown the nucleoids are present in contact. Thus bacterial DNA is attached to

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#Question id: 20108

#XL - P Chemistry

Which of the following is zero during adiabatic expansion of the gas

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#Question id: 4941

#XL - T Zoology

Which of the factors below weaken the hypothesis of abiotic synthesis of organic monomers in early Earthʹs atmosphere?

1.  the relatively short time between intense meteor bombardment and appearance of the first life forms

2.  the lack of experimental evidence that organic monomers can form by abiotic synthesis

3.  Uncertainty about which gases comprised early Earthʹs atmosphere