HRS - Ask. Learn. Share Knowledge. Logo

Questions in biology

[Done] The female plant structure consisting of the stigma, style, and ovary is called: A. a stamen. B. a sepal. C. a pistil. D. a carpel.

[Done] Red-green colorblindness in humans is a sex-linked trait. If a woman with normal vision, whose father was colorblind, marries a man whose mother was colorblind, what is the probability of their first child being a colorblind girl? (A) 0 percent (B) 12.5 percent (C) 25 percent (D) 50 percent (E) 100 percent

[Done] What is the primary role of the stomach in the human digestive system? A. producing specialized salts that absorb fats B. absorbing water and minerals from undigested food C. using muscle movements and enzymes to break down food D. transferring nutrients from digested food to the bloodstream

[Done] What effect does an alkali have on the pH of an acidic lake?

[Done] Natural selection can be best defined as:

[Done] If a cell is exposed to cyanide, most of the cyanide will be found within which part of the cell?

[Done] Which element acts as a hydrogen acceptor during aerobic respiration? A. hydrogen B. carbon C. oxygen D. nitrogen E. phosphorus

[Done] Genetic Crosses Question: A brown coat is dominant to a white coat in cattle. A farmer has a brown bull. How would you determine whether the bull is a heterozygote for the dominant allele?

[Done] List two factors that might cause an organism to restrict its use of a resource.

[Done] Which of the following categories includes the most distantly related organisms? A. family B. species C. class D. genus E. order