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Questions in biology

[Terjawab] Over time, the number of organisms in a population increases exponentially. The table below shows the approximate number of organisms after [tex]$y$[/tex] years. | y years | number of organisms, [tex]$n$[/tex] | | :------ | :----------------------------- | | 1 | 55 | | 2 | 60 | | 3 | 67 | | 4 | 75 | The environment in which the organisms live can support at most 600 organisms. Assuming the trend continues, after how many years will the environment no longer be able to support the population? A. 12 B. 24 C. 81 D. 82

[Terjawab] In a food chain, what describes the number of levels an organism is away from the original source of energy? A. Food chain B. Autotroph C. Decomposer D. Trophic level

[Terjawab] Decomposition in pools, ponds, and lakes takes place mostly in the a. pelagic b. littoral c. benthic d. all of the above Please select the best answer from the choices provided.

[Terjawab] The carbon cycle ensures that carbon is not lost. Which is another important benefit of the carbon cycle? A. The carbon cycle helps regulate Earth's temperature. B. The carbon cycle ensures that living things have a continual source of hydrogen. C. The carbon cycle helps transport nutrients in bodies of water. D. The carbon cycle ensures that there is a continual supply of water.

[Terjawab] 1. Afferent impulses move: A. toward the brain B. away from the spinal cord C. away from the heart D. toward the peripheral nervous system

[Terjawab] In which of the following ways is photosystem I different than photosystem II? A. Photosystem I uses the high-energy electrons to reduce NADP to NADPH, whereas photosystem II uses them to produce ADP into ATP. B. Photosystem II contains a pigment complex to trap energy, whereas photosystem I does not. C. Photosystem II captures solar energy, whereas photosystem I does not.

[Terjawab] The pair of gene expressed in a heterozygous individual is called A. allele B. centrosome C. chromosome D. chromatid E. nucleus

[Terjawab] Which is one of the five characteristics of life? A. having organs B. containing tissues C. growing and developing D. spontaneously generating

[Terjawab] Attempt either option A or B. A. List the steps for the synthesis of glucose by the plants. What special feature is found in desert plants related to this process? OR B. Explain the role of the following enzymes in the process of digestion of food in humans: (i) Salivary amylase (ii) Pepsin (iii) Trypsin (iv) Lipase

[Terjawab] Select all that apply. Which hormones are associated with the posterior pituitary gland? Growth hormone Oxytocin Prolactin Thyroid-stimulating hormone Antidiuretic hormone