Sister chromatids are joined together at a pinched spot called the _______

Fill in the blank(s) with the appropriate word(s).


Centromere

Biology & Microbiology

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The primary curves of the vertebral column are the

A) cervical, lumbar, and sacral. B) thoracic and coccygeal. C) cervical and thoracic. D) thoracic and sacral. E) dorsal and ventral.

Biology & Microbiology

What is the origin and physiological function of restriction endonucleases?

A) Bacteriophage produce them to gain resistance to antibiotics. B) Restriction endonucleases are required for DNA replication in yeast. C) Bacteria produce them to protect against viral invasion. D) Scientists invented them and synthesize them in labs.

Biology & Microbiology

________ and ________ groups are negatively charged functional groups of carbon, whereas the ________ group is a positively charged functional group

Fill in the blank with correct word.

Biology & Microbiology

The mitochondrial cristae are an adaptation that

A) permits the expansion of mitochondria as oxygen accumulates in the mitochondrial matrix. B) helps mitochondria divide during times of greatest cellular respiration. C) increases the space for more copies of the electron transport chain and ATP synthase complexes. D) carefully encloses the DNA housed within the mitochondrial matrix.

Biology & Microbiology