BIO182 Chapter 01 MasteringBiology Homework

Part B - Graphing experimental data Plot the data for the two species of crickets, one graph for the snowy tree cricket and a separate graph for the common field cricket. To plot the data for each species, click "add graph" and then select the appropriate graph label.

(Couldn't add photo) Plot the points following the numbers

Part B What is the approximate slope (m) of this line?

0.5

Part E What would be the approximate survival rate for a nest with 5 eggs?

0.50

Part F Drag the correct equation to match each description. The equations may be used once, more than once, or not at all

1) y= -6x+12 2) y= -6x+12 3) y= 1.5x+ 17 4) y= 3x+25

Part H What can you concluded from the graph?

1)Large clutch size is strongly correlated with lower chick survival

Part A Which of the following statements about the graph are true? Select all that apply.

1)Melting Points is on the y-axis and GC content is on the x-axis 2)As GC content increases, the melting point increases at a constant rate 3)The graph shows a linear relationship between GC content and melting point

Part E Using the equation of the line (y = 0.5x + 79), what would be the melting point of DNA with 50% GC content? Enter your answer as a whole number.

104 degrees Celsius

Part D How many dark brown mice were caught in the dark-colored soil enclosure on a moonlit night?

12

Part H How many light brown mice were caught in the light-colored soil enclosure on a moonlit night?

18

Part C- reading the graph How many dark brown mice were caught in the light-colored soil enclosure on a moonlit night?

19

Part I How many light brown mice were caught in the dark-colored soil enclosure on a moonlit night?

28

Part c In this graph, what is the y-intercept?

79

Part A In animal populations, DDT causes: ?

Birth defects

Part F The correlation coefficient of the data on chick survival vs. clutch size is -0.93. How would you interpret that correlation coefficient?

Chick survival and clutch size are strongly negatively correlated

Part G Suppose you analyzed the same type of data for a different species and found a correlation coefficient of -0.17. How would you describe the relationship between chick survival and clutch size for that species?

Chick survival and clutch size are weakly negatively correlated

Part M What combination of independent variables led to the highest predation level in enclosures with light-colored soil?

Dark brown coat with no moon

Part Q Which condition is optimal for predation by the owl on mice?

Dark nights are better for hunting

Part D - Experimental prediction: The effect of temperature on the female's response to the male's song Assuming your hypothesis is supported, which of the following graphs predicts the response of the female cricket to the male's song as the temperature of the female's enclosure varies?

Graph that points up, doesn't touch the 20 degree Celsius and touches the 40 degree point on the x-axis

Part C From looking at this scatter plot, what do you think the regression line represents?

It represents the straight line that fits most closely the trend in the data.

Part N What combination of independent variables led to the highest predation level in enclosures with dark-colored soil?

Light brown coat with full moon

Part A: Can you match these prefixes, suffixes, and word roots with their definitions

Measure: Metr- Large: mega- giant: giga- one thousand: kilo- one hundred: hecto- ten: deka- one-tenth: deci- One-hundredth: centi- one-thousandth: milli- small: micro-

Part A - Understanding the parts of the graph The graph shows data from the light-colored soil enclosure. There is one dependent variable and more than one independent variable on the graph. What are the independent variables, the variables that were manipulated by the researcher?

Mouse coat color and the presence or absence of moonlight

Part G Under which conditions would a dark brown mouse be most likely to escape predation at night?

On dark-colored soil with full moon light

Part A Competition is central to the theory of natural selection. Why does competition occur?

Organisms typically produce too many offspring, and resources are limited

Part B Which type of graph is best suited to this data?

Scatter plot

Part B What is the dependent variable, the response to the variables being tested?

The number of mice caught

Which of the following attributes is common to both prokaryotic cells and eukaryotic cells? generally about the same size a membrane-enclosed nucleus membrane-enclosed organelles the use of proteins as information storage molecules the use of DNA as the information storage molecule

The use of DNA as the information storage molecule

Part F Is a dark brown mouse on dark-colored soil more likely to escape predation under a full moon or with no moon? What data support your answer?

Under a full moon; the owl caught more dark mice when there was no moon (about 20) than when there was a full moon (about 12).

Part K Is a light brown mouse on light-colored soil more likely to escape predation under a full moon or with no moon? What data support your answer?

Under no moon; the owl caught more light mice when there was a full moon (about 18) than when there was no moon (about 11).

In eukaryotic cells DNA has the appearance of a _____. single strand letter U double helix triple helix circle

double helix

Part P Combining the data shown in both graphs, estimate the total number of mice caught in moonlight versus no-moonlight conditions.

moonlight: about 77 caught; no moonlight: about 95 caught

DNA is composed of building blocks called _____. nucleic acids Gs nucleotides adenines amino acids

nucleotides

Part L Under which conditions would a light brown mouse be most likely to escape predation at night?

on light-colored soil with no moon

Part A Which variable would you put on the x-axis, and which variable would you put on the y-axis?

x-axis: clutch size y-axis: chick survival

Part D Which equation most closely approximates the regression line shown in the graph?

y = -0.14x + 1.2

Part D Which equation correctly expresses the line in the graph

y=0.5x+79

Part C - Interpreting experimental results The process of science is not limited to acquiring and visualizing data (as you did in Part B). Analysis and interpretation of the data are also essential parts of scientific investigation. The graph that you produced in Part B is reproduced here. Which three of the following statements are valid conclusions that could be drawn from the graph above?

1)The difference between the chirp rates of the two species remains fairly constant across the range of temperatures tested. 2)It is possible for a male snowy tree cricket and a male field cricket to sing with the same chirp rate, but only at different temperatures. 3)The change in chirp rate with each change in temperature is similar for the two species.

Part O Based on both graphs, what condition(s) are most deadly for both colors of mice?

high contrast between the mouse and its background

Part B DDT is ?-soluble so it accumulates in: ?

Fat...milk

Part A - Experimental technique: Experimental and control groups For each insect below, indicate whether it is part of an experimental group or a control group when placed in enclosure B. Labels may be used once, more than once, or not at all.

Male snowy tree cricket- Control group Female snowy tree cricket- experimental group Female field cricket- control group

Part C Which one of the following statements is true?

Many african governments concluded that the potential long-term health effects of DDT were not as serious as the immediate problem of insect control.

Part E- Interpreting the graph On a moonlit night, would a dark brown mouse be more likely to escape predation by owls on dark- or light-colored soil? What data support your conclusion?

On dark-colored soil; fewer dark brown mice were caught on dark soil than on light soil under a full moon

Part J On a moonlit night, would a light brown mouse be more likely to escape predation by owls on dark- or light-colored soil? What data support your conclusion?

On light-colored soil; fewer light brown mice were caught on light soil than on dark soil under a full moon.