Single layer of cube shaped cells
A. Pseudostratified columnar
B. Simple columnar
C. Simple cuboidal
D. Simple squamous
E. Stratified squamous
F. Transitional
Ans: C. Simple cuboidal
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The transplant of pig bone marrow into a human recipient may overcome the ____________________ triggered by transplanted pig organs
Fill in the blank(s) with correct word
Select the false statement:a
Biomass reduction from one trophic level to the next is approximately 50 %. b. Biomass reduction from one trophic level to the next varies widely in nature. c. Biomass reduction can be measured as dry weight. d. Biomass may be measured as live weight. e. Biomass in an ecosystem can be illustrated using a pyramidal-shaped graph.
Based on a variety of experiments, it is known that the rate of photosynthesis is highest when wavelengths of light between 400 and 500 nm are used, and when wavelengths around 700 nm are used. What does this indicate about the relative importance of chlorophyll a and b in photosynthesis?
A. Reflection of light by chlorophyll a and b is essential for the process of photosynthesis. B. Absorption of light by chlorophyll a and b is essential for the process of photosynthesis. C. Chlorophyll a and b are much less important than other pigments in the reflection, absorption and transmission of light relevant to photosynthesis. D. Transmission of light by chlorophyll a and b is essential for the process of photosynthesis.
Organisms that use the Calvin cycle to fix CO2 are:
a) chemoautotrophs b) chemoheterotrophs c) chemoautotrophs and chemoheterotrophs d) photoautotrophs and chemoautotrophs