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Questions in biology

[Answered] Toxicology is the study of A. viruses. B. transportation. C. poisons. D. cancers.

[Answered] A. 36 cm² B. 84 cm² C. 28 cm² D. 7 cm² 41. All of the following are mammals EXCEPT A. Shark B. Seal C. Porpoise D. Bat 42. Bats and birds are good fliers but the bat differs from bird in having A. Diaphragm B. Four-chambered heart C. Wings D. Warm bloodedness 43. By the statement 'survival of the fittest', Darwin meant that A. The strongest of all species survives B. The most intelligent of the species survives C. The cleverest of the species survives D. The most adaptable of the species to changes survives 44. Most of the endangered species are the victims of A. Habitat destruction B. Over-hunting C. Acid rain D. Competition with introduced species 45. During heart attack, a doctor may inject A. Thyroid B. Prolactin C. Insulin D. Adrenaline 46. The autonomic nervous system controls all of the following EXCEPT A. Secretion of digestive juice B. Sweating C. Thought D. Peristalsis 47. Which one of the following human cells do not contain mitochondria? A. Nerve cell B. Red blood cell C. Liver cell D. White blood cell 48. Which of the following is NOT correctly matched? A. Sycon - Canal system B. Star fish - Radial symmetry C. Round worm - Pseudosegmentation D. Insect - Metameric segmentation

[Answered] The function of glycogen is to A. lower blood glucose levels when they rise after a meal. B. store glucose in humans and animals. C. create membrane structures in plants. D. store energy in plants.

[Answered] Marfan syndrome is a genetic trait caused by a dominant allele. A teenager whose mother has the syndrome (but whose maternal grandfather was not affected), and whose father was unaffected, is concerned that she may have the trait. Write out a Punnett square showing this cross using the letter A/a for the gene that determines Marfan syndrome.

[Answered] The organisms native to an area will impact the types of soil found in that area. True or False

[Answered] The presence of organic material in soil makes it more productive for plant growth. True or False?

[Answered] To which of the following organs do monosaccharides go after absorption? A. pancreas B. gallbladder C. small intestine D. liver

[Answered] Select the correct answer from each drop-down menu. If a heterozygous male with the genotype Ww is mated with a homozygous recessive female of genotype ww, there is a chance that $\square$ of the offspring will be heterozygous. | | w | w | |---|----|----| | w | Ww | ww | | w | Ww | ww | If the heterozygous, WW, is crossed with a homozygous dominant, WW, then the probability of having a homozygous recessive offspring is | | W | w | |---|----|----| | w | WW | Ww | | W | WW | Ww |

[Answered] Joan was born without functioning ovaries. Joan will: A. need sex hormone replacement. B. have difficulty urinating. C. have a slow metabolism. D. identify as a man.

[Answered] Select the best answer for the question. 8. Respiration occurs A. externally and internally. B. on the external level only. C. independent of cellular activity. D. on the internal level only.