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Questions in biology

[Homework Help] Which factor can cause secondary succession? A. clear cutting B. glacial melting C. competition D. predation

[Homework Help] A patient has diabetes, a disease that causes high blood sugar levels. Which macromolecule will a dietician monitor most closely in a patient that has the disease? A. carbohydrates B. lipids C. nucleic acids D. proteins

[Homework Help] Which of the following statements are true regarding homologous pairs of chromosomes? Select all that apply. * Their presence indicates a cell is diploid * They line up next to each other during metaphase I of meiosis * They are the same size * They are identical copies of one another * One of the homologous chromosomes in a set is synthesized during S phase * They are separated in anaphase I of meiosis

[Homework Help] Which of the following is NOT a part of the middle ear? A. hammer B. cochlea C. anvil D. stirrup

[Homework Help] What traits will be MOST alike in two biologically unrelated adopted children raised together by the same adoptive parents? A. verbal abilities B. extraversion C. values D. reading abilities

[Homework Help] Which serves as a system of levers? A. tendons and ligaments B. the skeleton C. skeletal muscles

[Homework Help] What does the dependent variable represent in an experiment? A. The outcome that is measured B. The variable you control C. The hypothesis being tested D. A confounding factor

[Homework Help] Why is a control group important in a scientific experiment? A. It provides a comparison to the test group. B. It is the group experiencing the changing variables. C. It gives the scientist control over when to change variables. D. It gives the scientist control over which variables to change.

[Homework Help] Hematopoiesis is: A. a broken blood vessel which causes bruising. B. the production of blood cells by yellow marrow in the diaphysis. C. the production of blood cells by red marrow in cancellous bone. D. the production of hemoglobin by red marrow. E. the name for the inorganic salts in the matrix of compact bone.

[Homework Help] Which is the most sensitive portion of the retina that is responsible for "straight-ahead" vision? A. macula B. aqueous humor C. canal of Schlemm D. pupil