Which of the following organelles does the Endosymbiotic Theory suggest evolved from symbiotic relationships between prokaryotic cells?
a) mitochondria
b) Golgi bodies
c) chloroplasts
d) ribosomes
Ans:
a) mitochondria
c) chloroplasts
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Some activated B cells are transformed into ________ cells that secrete antibodies, and others remain as ________ cells
A) plasma / memory B B) lymphocytes / memory B C) immunoglobulin / plasma D) immunoglobulin / TH
When scientists inserted the Bt toxin gene into plant cells they created a
A. transgenic plant. B. stem cell. C. new species. D. clone. E. monohybrid.
Intramembranous ossification step 3
What will be an ideal response?
The best definition of a purebred plant is one that ________
A) cannot be cross-fertilized B) self-fertilizes to produce offspring identical to the parent C) produces sterile offspring when cross-fertilized D) self-fertilizes to produce hybrid offspring