Biology Notes, Questions, and Study Resources

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what is inhibitory gene interaction or dominant supressor gene interaction?

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Question 1 Which of the following phrases best describes the function of ribosomal RNA (rRNA)? Group of answer choices It transcribes messenger and transfer RNA from DNA. It adds structural support to the cell membrane. It transfers amino acids to the ribosome to be incorporated into proteins. It helps the ribosome to recognize how and where to begin working. It bonds amino acids to transfer RNAs. Question 2 Life perpetuates itself at the cellular level Group of answer choices even though nutrient absorption happens only at the organismal level. by acquiring monomers and energy sources at the microscopic level. until the organism dies, then all cell growth stops immediately. carrying out absorption, processing and growing “for” the organism. b) and d) above Question 3 The mitotic stage of metaphase is most clearly defined by Group of answer choices microtubule shortening that places all chromosomes at the spindle midline. the first stages of deterioration of the nuclear membrane. migration of sister chromatids to opposite poles of the spindle. the replication of the centrosome. the gradual condensation of chromatin into visible chromosomes.

Which statement best describes a keystone species? A. It has little genetic variation. B. It has an extremely high population. C. It remains unaffected by all environmental changes. D. It has a strong influence on the ecosystem. E. It’s the first species to populate a new ecosystem.

The bones are $\qquad$ to the muscles, while the muscles are $\qquad$ to the bones. | | Deep, superficial | | :-- | :-- | | | Deep, distal | | | Superficial, deep | | | Proximal, superficial |

To cause cancer, proto-oncogenes require _____ allele(s) to be mutated and therefore are considered ________. The mutation results in a ___ of function.

Select the part whose main job is to make proteins. nucleus ribosome smooth endoplasmic reticulum mitochondria