Plants require water for transpiration, metabolism, and photosynthesis. How is water used in photosynthesis?
A. as a substrate for ATP synthase
B. as an electron acceptor
C. to combine with ADP forming ATP
D. to combine with NADP+ to form NADPH
E. as an electron donor
E. as an electron donor
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Which of the following is not true about histone modification and the enzymes that create them?
A. The enzymes responsible are often part of multiprotein complexes that include transcription factors. B. The enzymes responsible can work with chromatin remodeling complexes to alter specific regions of chromatin in response to environmental signals. C. The modifications can be passed on by epigenetic inheritance. D. The enzymes responsible can create histone variants. E. All of these choices are correct.
How is cell division different in plants versus animal cells?
What will be an ideal response?
If the Cretaceous mass extinction had not occurred, which group of animals would probably include the largest land animals today?
A) Bony fish B) Insects C) Birds D) Reptiles E) Amphibians
Imagine a diploid sexually reproducing organism, Diploidus sexualis, that contains three pairs of chromosomes. This organism is unusual in that no recombination between homologous chromosomes occurs during meiosis
A. Assuming that the chromosomes are distributed independently during meiosis, how many different types of sperm or egg cells can a single individual of this species produce? B. What is the likelihood that two siblings of this species will be genetically identical? You can assume that the homologous chromosomes of each parent are different from one another and from their counterparts in the other parent.