Question
You are observing a slide of onion root cells. Which phase of the cell cycle are a majority of the cells most likely to be in?
prophase
anaphase
metaphase
interphase
Multiple Choice 2 points
You hypothesize that UV radiation reduces the ability of bacteria X to infect the skin, ans set up an experiment exposing skin cells to the bacteria in the presence or absence of UV radiation. After three days, you assess the number of infected skin cells. What is the independent variable?
three days
infected skin cells
bacteria
ultraviolet radiation
Multiple Choice 2 points
In assessing anaerobic respiration in microbes, yeast produce
lactic acid; ethanol ethanol; lactic acid ethanol: ethanol lactic acid; lactic acid
prophase
anaphase
metaphase
interphase
Multiple Choice 2 points
You hypothesize that UV radiation reduces the ability of bacteria X to infect the skin, ans set up an experiment exposing skin cells to the bacteria in the presence or absence of UV radiation. After three days, you assess the number of infected skin cells. What is the independent variable?
three days
infected skin cells
bacteria
ultraviolet radiation
Multiple Choice 2 points
In assessing anaerobic respiration in microbes, yeast produce
lactic acid; ethanol ethanol; lactic acid ethanol: ethanol lactic acid; lactic acid
Answers
GPT-4o mini
1. **You are observing a slide of onion root cells. Which phase of the cell cycle are a majority of the cells most likely to be in?**
**Answer:** interphase
Onion root cells are typically in interphase because they are often actively growing, and interphase is the longest phase of the cell cycle where the cell grows and prepares for division.
2. **I hypothesize that UV radiation reduces the ability of bacteria X to infect the skin. After three days, you assess the number of infected skin cells. What is the independent variable?**
**Answer:** ultraviolet radiation
The independent variable is the factor that you manipulate in an experiment. In this case, you are testing the effect of UV radiation on the bacteria's ability to infect skin cells.
3. **In assessing anaerobic respiration in microbes, yeast produce:**
**Answer:** ethanol; lactic acid
Yeast primarily produce ethanol during anaerobic respiration (fermentation), while lactic acid is typically produced by some bacteria and animal cells during anaerobic respiration.
**Answer:** interphase
Onion root cells are typically in interphase because they are often actively growing, and interphase is the longest phase of the cell cycle where the cell grows and prepares for division.
2. **I hypothesize that UV radiation reduces the ability of bacteria X to infect the skin. After three days, you assess the number of infected skin cells. What is the independent variable?**
**Answer:** ultraviolet radiation
The independent variable is the factor that you manipulate in an experiment. In this case, you are testing the effect of UV radiation on the bacteria's ability to infect skin cells.
3. **In assessing anaerobic respiration in microbes, yeast produce:**
**Answer:** ethanol; lactic acid
Yeast primarily produce ethanol during anaerobic respiration (fermentation), while lactic acid is typically produced by some bacteria and animal cells during anaerobic respiration.