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Questions in biology

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

[Terjawab] Which of the following best explains why air is considered a natural resource? A. Air is expensive to produce and keep clean. B. Air is a raw material for biological processes supplied by the Earth. C. Air can be processed to generate expensive chemicals. D. None of the above

[Terjawab] Which holds the majority of CO2? A. vegetation B. animals C. phytoplankton D. seawater E. the atmosphere

[Terjawab] Which is most likely to change with new discoveries and technologies? A. classification of organisms B. kingdom of an organism C. order of the taxonomic levels D. use of binomial nomenclature

[Terjawab] Which type of growth occurs when population grows? A. decreasing B. exponential C. linear D. logistic

[Terjawab] Which of the following pair of cell organelles does not have DNA molecules? A. Nuclear Envelope and Mitochondria B. Lysosome and Vacuoles C. Chloroplast and Vacuoles D. Mitochondria and Lysosome

[Terjawab] Ozalla village has 1000 persons made up of 650 dominant homozygotes, 100 heterozygotes, and 250 recessive homozygotes. Is the population governed by Hardy-Weinberg law? List the conditions that must be kept constant for the Hardy-Weinberg principle to be operational in the village.

[Terjawab] For Monday: Research at least 3 diseases or conditions per person regarding the Respiratory and Circulatory Systems. Include the definition, causes, and treatment.

[Terjawab] Fill in the blanks: 1. ______ do not have existence on the earth. 2. An egg has three main parts ______, ______ and ______. 3. The cycle from egg to an adult is known as ______. 4. An adult butterfly has ______ stages in its life. Write true or false: 1. The yolk has thread-like structure. 2. The chick has no feathers over its body. 3. The tadpole get nutrients from insects. 4. Mammals feed their young ones.

[Terjawab] What do we have to do? Find out why a piece of plain chapati tastes sweet after we chew it for some time. What do we need? A large piece of plain chapati. How do we proceed? Take a large piece of plain chapati. Chew it as much as you can. What do we observe? As the chapati changes into a fine paste, does it begin to taste sweet?