Which developmental events are accurately placed in the following timeline? (Check all that apply.)A) After 6 days-implantationB) After 1 week-gastrulationC) After 2 weeks-neurulationD) After 3 months-organogenesisE) 266 days-birth
What will be an ideal response?
A, B, C, E
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One type of archaeon, Haloquadratum walsbyi, is shaped like a postage stamp with dimensions of 2 µm x 3 µm x 0.25 µm. What advantage would this shape provide?
A. This shape is more conducive to the formation of biofilm communities. B. This shape increases the surface to volume ratio enabling more efficient nutrient uptake. C. This shape is difficult for phagocytic cells to attach to and engulf. D. This shape enables this bacteria to float on surfaces and obtain better light exposure.
Do trees really sequester carbon permanently or does this take place simply while they are alive? What will be an ideal response?
Tall (D) is dominant to dwarf (d). Give the F2 genotypic and phenotypic ratios of a cross between a
pure-breeding, tall plant and a pure-breeding, dwarf plant. What will be an ideal response?
If a human diploid cell and a human haploid cell somehow managed to fuse together and not lose any of the chromosomes, how many sets of chromosomes would be inside the newly formed cell?
A) 3 B) 2.5 C) 2 D) 1.5