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Questions in biology

[Terjawab] Which molecule would be the most affected by limited nitrogen? A. myofibrillar proteins in muscle B. glucose molecules in starch C. fat molecules surrounding organs D. cellulose molecules in plant cell walls

[Terjawab] An electric device delivers a current of [tex]$15.0 A$[/tex] for 30 seconds. How many electrons flow through it?

[Terjawab] An electric device delivers a current of [tex]$15.0 A$[/tex] for 30 seconds. How many electrons flow through it?

[Terjawab] The element nitrogen is needed to form A. fat. B. protein. C. starch. D. sugar.

[Terjawab] Which row correctly shows an advantage of feeding babies breast milk and an advantage of feeding them bottle milk? | | advantage of breast feeding | advantage of bottle feeding | |---|--------------------------------------------------------------|------------------------------------------------------------------| | A | Feeding helps create a bond between mother and baby. | Bottle feeding is cheaper. | | B | It is easier to control the amount of milk the baby receives. | The baby receives antibodies from the mother. | | C | The milk contains exactly the right balance of nutrients. | Other people besides the mother can feed the baby. | | D | The baby is less likely to suffer from diarrhoea. | HIV is less likely to be transmitted from mother to baby.

[Terjawab] A grass starts with [tex]$30,000 kJ$[/tex] of energy. How much energy would a cheetah acquire after the grass? A. 30 kJ B. 300 kJ C. [tex]$3,000 kJ$[/tex] D. [tex]$30,000 kJ$[/tex]

[Terjawab] A food is known to contain protein, but no reducing sugar. When this food is tested with biuret solution and Benedict's solution, which colors would a student observe? | | Biuret test | Benedict's test | |---|---|---| | A | blue | blue | | B | blue | brick red | | C | lilac/violet | blue | | D | lilac/violet | brick red |

[Terjawab] What can humans do to help REDUCE the amount of nitrogenous waste that enters rivers and oceans? What are some ways each farm can change their farming practices to prevent pollution of the river? Will the cost outweigh the benefits of these changes for preventing excess nitrates in the rivers and oceans? Explain your answer.

[Terjawab] After glacial deposits in Alaska, lichens and fungi started colonizing the habitat. These lichens created favorable conditions for annual weeds and other shrubs. Finally, mixed evergreen trees started dominating the area. Identify the seral community in this habitat. A. lichens B. fungus C. deciduous trees D. shrubs

[Terjawab] Under which color of light will plants be least likely to make food? A. red B. blue C. orange D. green