Correns found that the inheritance of variegated color on the leaves of certain plants was determined only by the maternal parent. What phenomenon explains this pattern?

A) ribosome structure
B) chloroplast inheritance
C) genomic imprinting
D) sex-linkage


B

Biology & Microbiology

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Why is the smooth endoplasmic reticulum unable to synthesize proteins?

A) No ribosomes are attached to its surface. B) There is no supply of free amino acids that it can easily access. C) It stores calcium, which is a known inhibitor of protein synthesis. D) It has no DNA to direct synthesis of proteins.

Biology & Microbiology

A geologist going through a sediment core is likely to find remnants of ancient calcium carbonate containing ________ and silica containing ________

A) diatoms / cercozoans B) cercozoans / diatoms C) chlorarachniophytes / foraminiferans D) foraminiferans / chlorarachniophytes

Biology & Microbiology

Which of the following terms is mismatched with its meaning or characteristics? 

A. Diploblastic—ectoderm and mesoderm B. Triploblastic—ectoderm, mesoderm, and endoderm C. Parazoa—lacks symmetry; no tissues D. Eumetazoa—definite symmetry; tissues organized E. Chordate—animal with notochord

Biology & Microbiology

The __________ theory states that mitochondria

were phagocytized by a primitive eukaryotic cell. Fill in the blank(s) with the appropriate word(s).

Biology & Microbiology