The “strings” of celery are composed of sclerenchyma tissue
____________________ Indicate whether the statement is true or false.
F, collenchyma
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At some of the lowest light concentrations, ________ can still grow well due to their ________, which effectively harvest photons for energy
A) green bacteria / antenna pigments B) green bacteria / chlorosomes C) purple bacteria / antenna pigments D) purple bacteria / chlorosomes
Which of the following traits is considered Mendelian?
A) A trait which is caused by linked genes B) A trait which is caused by a single gene C) A trait which is caused by environmental factors D) A trait which is multifactorial
. The structure labeled "D" is the ____
a. aorta b. right atrium c. left atrium d. trunk of the pulmonary arteries e. superior vena cava
A number of tumors and viruses (e.g., Epstein-Barr) are able to escape cytotoxic T cell degradation by inhibiting what?
A) helper T cell activation B) tumor antigen expression C) the production of the class I MHC molecule D) the production of the class II major histocompatibility (MHC) molecule E) the activation of the complement system