Why can't polysaccharides, lipids, or proteins permeate the cell membrane? Why are extracellular enzymes essential for microbes?
What will be an ideal response?
Ans: they must be hydrolyzed by specific extracellular enzymes into their respective basic building blocks, once broken down, then can be transported into the cells and used for synthesis of protoplasmic requirements/energy production
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Trilobites are extant.
A-True B-False
The brain uses three variables to determine the location and intensity of a stimulus. What are they?
What will be an ideal response?
Which of the following describes the most important difference between invertebrates and vertebrates?
a) invertebrates contain multiple tissues, while vertebrates do not b) vertebrates contain a backbone, while invertebrates do not c) invertebrates contain a backbone, while vertebrates do not d) vertebrates contain multiple tissues, while invertebrates do not
What condition(s) must be met for glucose to be produced during photosynthesis?
A) The concentration of O2 must be significantly higher than that of CO2. B) Mitochondria must convert light energy to ATP. C) NADH and FADH are available. D) The products of light-dependent reactions must be available.