Carbon atom cycles continuously through the biosphere. What is a by product of cell respiration, and what does this by product represent?
A.) CO2; completely oxidized carbon
B.) C6H12O6; a reduced version of carbon
C.) CO2; a reduced version of carbon
D.) C6H12O6; completely oxidized carbon
Ans: A.) CO2; completely oxidized carbon
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Does the presence of introns/exons in eukaryotic cells provide more potential diversity in gene products (proteins) than is possible in prokaryotic cells?
A. It doesn't-this is a trick question. There's the same potential for gene products (proteins) in a bacterium with 1,000 genes as there is in a eukaryotic cell with 1,000 genes. B. It does-each exon and each intron could be used individually and discretely to make agene product (protein). Since bacteria lack these, they will have less ability to create different proteins. C. It does-exons/introns can be spliced together in different ways post-transcription to yield different mRNAs (and therefore, different proteins). Bacteria lack this system, so the gene you transcribe is translated into the only protein you'll end up getting. D. It does-exons/introns can be spliced together in different ways at the DNA levelto eventually yield different mRNAs (and therefore, different proteins). Bacteria lack this system, so the gene you transcribe is translated into the only protein you'll end up getting.
The three primary meristems are the ____________, which forms the epidermis; the procambium, which produces primary vascular tissues (primary xylem and primary phloem); and the ground meristem, which differentiates further into ground tissue.
Choose the letter of the best match: A. protoderm B. vascular cambium C. apical meristem D. procambium E. ground meristem
7. Identify the largest distinction between the theory of spontaneous generation and the cell theory.
A. Spontaneous generation can be observed with the microscope, while cell theory is newer and has not yet been proven. B. Spontaneous generation is found in organisms that don't have cells, while cell theory happens in organisms that do have cells. C. Spontaneous generation only happens with animalcules and germs, while cell theory applies to other, more complex organisms. D. Spontaneous generation proposes life can form from available molecule components, while the cell theory explains how all cells are formed from preexisting cells. E. There is no distinct difference between the two theories.
Describe the relationship between introns (size and number) and organismic complexity in eukaryotes
What will be an ideal response?