Which cranial bone spans the width of the cranial floor?
What will be an ideal response?
Spheniod
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If a plant could not get enough phosphorus, then it could not make ________
A) fat B) vitamin A C) ATP D) carbohydrates
All photosynthetic protists ________.
A. carry out anoxygenic photosynthesis using two photosystems B. carry out oxygenic photosynthesis using one photosystem C. carry out oxygenic photosynthesis using two photosystems D. carry out anoxygenic photosynthesis using one photosystem
Why do the same trans-regulatory elements lead to very different morphology in different species of organisms?
A. Different species have genetic codes that use different codons, leading to different amino acid sequences. B. Morphological change depends on sequence mutations in enhancers. C. These regulatory elements have no effect on morphology, only metabolism. D. The transcription factor activates different combinations of enhancers and downstream genes. E. The trans-regulatory elements in different lineages have independently evolved the same sequence, by convergent evolution.
While glucose is filtered out at the glomerulus, none is excreted in the urine. What happens to the glucose?
A. It is reabsorbed at the distal convoluted tubule. B. It is secreted at the distal convoluted tubule. C. It is reabsorbed from the collecting duct. D. It is reabsorbed at the proximal convoluted tubule. E. It is secreted at the proximal convoluted tubule.