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Questions in biology

[Answered] Explain some ways in which mass movement can affect wildlife.

[Answered] Bacteria that live in nodules attached to the roots of certain plants perform the chemical transformation called A. denitrification. B. ammonification. C. nitrification. D. nitrogen fixation.

[Answered] 58. Which of the following is the human haploid chromosome number? A. 10 B. 23 C. 46 D. 92 59. Daughter chromosomes start to move towards the opposite poles of a dividing cell during A. prophase B. metaphase C. anaphase D. telophase 60. Organisms that comprise the greatest mass of living substance (biomass) in the terrestrial food chain are A. decomposers (e.g., bacteria) B. producers (e.g. grasses) C. primary consumers (e.g., mice) D. tertiary consumers (e.g., hawk) 61. The constant related to the gravitational force has a unit in the SI system of units of A. [tex]$m sec ^{-2}$[/tex] B. [tex]$kg m sec { }^{-1}$[/tex] C. [tex]$N m ^2 kg^2$[/tex] D. [tex]$J m sec ^{-1}$[/tex] 62. The physical quantity related to the height of liquid is A. pressure B. mass C. weight D. density 63. A body of volume [tex]$1 m^3$[/tex] is wholly immersed in a liquid of density [tex]$13600 kg / m ^3$[/tex] at sea level. The loss in weight of the body in the liquid is equal to A. 1360 N B. 13.6 N C. [tex]$\left(\frac{1}{13600}\right) N$[/tex] D. 136000 N

[Answered] Which of the following processes is not involved in mechanical digestion? A. chewing B. enzymes C. peristaltic movement of food D. grinding

[Answered] A dog called the Maltese doesn't shed. This type of dog most likely came about through A. genetic engineering B. recombinant DNA C. cloning D. hybridization

[Answered] The equation shows cellular respiration. During cellular respiration, glucose combines with oxygen to form carbon [tex]C _6 H _{12} O _6+6 O _2 \rightarrow 6 CO _2+6 H _2 O +[/tex] ATP dioxide, water, and ATP. What happens to the energy in the bonds in glucose? A. The energy is transferred to oxygen. B. The energy is transferred to carbon dioxide. C. The energy is transferred to water. D. The energy is transferred to ATP.

[Answered] Mendel’s experiments discovered that one parent's trait disappeared in the F1 generation, only to reappear in 25% of the F2 generation. Which of the following best explains this pattern of inheritance? A. The two genes of a given trait segregate during gamete production B. There are alternative forms of genes that account for variation in inherited characteristics. C. If the two alleles of an inherited pair differ, then one determines the organism's appearance and is the dominant allele. D. For each characteristic, an organism inherits two alleles, one from each parent

[Answered] Which of the following is not a component of soil? a. organic material b. minerals c. gases d. none of the above

[Answered] Which of the following is not involved in maintaining a constant level of body fluid (water)?

[Answered] A 76-year-old individual fell while he was at home and, after some months, he is still afraid and is rigid in his joints both in standing and walking. A. an excessive tonic contraction of the inferior limb flexor muscles B. an excessive tonic contraction of the limb extensor muscles C. an excessive tonic contraction extensor and flexor muscles of the whole inferior limb D. an excessive tonic contraction of the quadriceps muscles E. an excessive tonic contraction of the inferior limb triceps muscles