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Questions in biology

📝 Answered - Discuss the effect of four environmental factors on enzyme activity.

📝 Answered - While studying bacterial cells, scientists measure the lengths of the cells in one colony. The chart shows their data | Cell number | Length (in micrometers) | | ----------- | ----------------------- | | 1 | 4.3 | | 2 | 5.2 | | 3 | 85.0 | | 4 | 5.3 | | 5 | 4.8 | | 6 | 4.9 | | 7 | 4.8 | | 8 | 4.6 | | 9 | 4.3 | | 10 | 4.5 | The scientists notice that one measurement stands out. How should the scientists best deal with this measurement? A. Accept it as true and use 85 micrometers in the data when they find the average length. B. Accept it as true but say that it is the only cell that has ever been that long. C. Consider that there was an error during measuring and collect further data. D. Consider that it is possible but very unlikely for these bacterial cells to be so long.

📝 Answered - Which component is released from the active site of an enzyme during a chemical reaction? A. reactant B. product C. substrate D. protein

📝 Answered - A bacterial cell with which modification might be resistant to antibiotics such as methicillin? A. the ability to spread through contact between people B. the ability to contaminate surfaces in areas such as locker rooms C. the ability to produce toxins that kill the human host D. the ability to produce an enzyme that breaks down the antibiotic E. the ability to cause skin infections such as pimples

📝 Answered - In Mrs. Nkosi's class, she teaches about plant growth by showing pictures on the board and talking about how seeds grow into plants. The students listen, take notes, and then do a worksheet where they label the stages of plant growth. Examine the problems with this lesson when it comes to helping students develop their science process skills. How could the lesson be changed to let students actively engage and practice those skills? Refer to at least TWO (2) process skills in your answer.

📝 Answered - Select all that apply. Which statements characterize osteocytes? More than one answer may be correct. A. They are derived from osteoblasts. B. They secrete osteoid. C. They maintain bone matrix. D. They break down bone matrix.

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

📝 Answered - Two insect groups vary genetically by two genes. When put together, they were able to reproduce and produce offspring that could also breed. Which best describes this insect population? A. The insects experienced geographic isolation. B. The insects experienced reproductive isolation. C. The insects are different species. D. The insects are the same species.

📝 Answered - In plants, the female structure that produces eggs is called a(n) A. seed coat B. root cap C. archegonium D. pollen grain

📝 Answered - Which is one event that may lead to primary succession? A. clear-cutting B. climate change C. volcanic eruption D. introduced species