The first protist chloroplast was likely to have been a(n)
A) virus.
B) symbiotic green alga.
C) chemosynthetic bacterium.
D) photosynthetic bacterium.
E) example of secondary endosymbiosis.
D
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The morphological features that a group of cells will eventually adopt is called the _______
A. positional information B. cell fate C. cell adhesion model D. embryogenesis
Match the skeletal muscle protein on the left with its function on the right.
A) myosin-binding protein at M line B) binds along the length of thin filaments C) major protein of sarcoplasmic reticulum D) attaches actin filaments to Z line E) mediates calcium regulation of contraction F) attaches actin to Z line G) links thick filaments to Z line H) major component of thin filaments I) major component of thick filaments J) links thin filament to Z line 1) actin 2) myosin 3) tropomyosin 4) troponin 5) titin 6) nebulin 7) myomesin 8) ?-actinin 9) Ca2+ ATPase 10) CapZ
Changes in what frequencies are at the core of how evolution occurs?
What will be an ideal response?
Most human cell contains....... chromosomes:
a. 23 b. 46 c. 20 d. 100 trillions