BIOL 1209 : Quiz 4 Answer Key

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azuremammoth471

15 Mar 2019

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Quiz 4: which of the following is not a biotic variable, light intensity, disease, competition, predation. Pre d atio n: which of the following variables would be described as density- dependent, climate, topography, mate availability, light intensity. T o p o gra p h y. Light inte nsity: all the trees on lsu"s campus are an example of a ________, population, community, ecosystem. P o p ulatio n m u nity. Ecosyste m: based off of the hypothesis, it is windy right now, what prediction could you make, when i drop a piece of paper, it will fly around more, windmills will spin more, it will be necessary to. 0% talk more loudly outside to be heard: any of the above. W he n i dro p a piece of p W in d m ills w ill spin m ore. It w ill be n ecessary to ta

Related Questions

1)Which of the following is the best way to reduce human population growth?

provide better medicine

provide free condoms

increase educational level worldwide

provide more access to abortions

2)Bears eat berries, humans, and large fish; large fish eat smaller fish and insects; humans eat bears, large fish, and berries; Venus flytraps eat insects. In the scenario described here large fish are a (an) example of ______.

Both a secondary and tertiary consumer

3)Which of the following are important biotic factors that can affect the structure and organization of biological communities?

temperature, water

light intensity, seasonality

annual rainfall, wind

nutrient availability, soil pH

predation, competition

4)A hypothesis is a proposed answer to a question based on observations.

True

False

Answer the following about Respiration and Photosynthesis:

1) In a plant, which of these process (light-dependent reactions, light independent reactions) are occuring during the day?

a) Light-dependent

b)Light-independent

c)Both light dependent and light independent

d) Neither light dependent and light independent

2) In a plant, which of these process (light dependent reactions, light independent reaction) can occur during the night?

a) Light-dependent

b)Light-independent

c)Both light dependent and light independent

d) Neither light dependent and light independent

3) Is cholorophyll the only molecule that absorbs light for photosynthesis?

a) yes

b) no

4)Does cellular respiration occur in all organism types?

a) yes

b) no

5) If no oxygen was provided from the outside should oxygen level increase or decrease as time goes on when in a plant is in the dark?

a) increase

b) decrease

6) As light intensity increases, what will happen to oxygen levels?

a)increase

b) decrease

You need to

use outside sources (i.e., Internet, journal articles, other texts, etc.) to complete this assignment. Any additional research should be cited in APA format, and listed at the end of the assignment.

Tutorial: http://www.harcourtschool.com/activity/science_up_close/512/deploy/interface.html Watch and listen to the tutorial found in the link above. Fill in the following answers as you watch. Stop and replay anything you donât understand â this is a complicated topic!

1. Plants use photosynthesis to make __________________ for the plant.

2. What do plants need in order to perform photosynthesis?

3. How is the plant able to obtain each âingredient?â

4. Identify the plant cell organelle in which photosynthesis takes place.

5. Summarize the process of photosynthesis. Water and carbon enter the chloroplastâ¦..

6. What happens to the oxygen that is produced as a result of photosynthesis?

7. Why is photosynthesis also important for people and animals?

Virtual Lab #1 - http://www.reading.ac.uk/virtualexperiments/ves/preloader-photosynthesis-full.html

Bubbles are given off by the plant through photosynthesis. By measuring the rate at which the bubbles are produced it is possible to tell how fast the plant is photosynthesizing. Read and follow the directions on how to use this lab simulator. Press start and record the bubbles per minute for each of the following light distances.

Then graph your data (be sure to label each axis)!

Distance (cm) Bubbles per minute

100 Y axis

120 i

150

180

200 X Axis

8. Based on your data, draw a conclusion regarding how light intensity affects the rate of photosynthesis. Virtual Lab #2 - http://www.kscience.co.uk/animations/photolab.swf

In this lab, you will be experimenting with how different variables affect the rate of photosynthesis.

9. Set the thermometer to 25Â°C (Room Temperature) and the light intensity to 20.

a. What were the bubbles per minute at this setting? ______ bpm

b. Now increase the CO2 available to the elodea. What were your bubbles per minute? ______ bpm

c. Based on your data, how does the amount of available CO2 affect the rate of photosynthesis?

10. Keep your settings from 9c (25Â°C, light intensity of 20, increased CO2).

a. What were the bubbles per minute at this setting? ______ bpm

b. Now increase the temperature to 40Â°C. What were your bubbles per minute? ______ bpm

c. Based on your data, how does an increase in temperature affect the rate of photosynthesis?

11. Return to your settings from 9c (25Â°C, light intensity of 20, increased CO2).

a. What were the bubbles per minute at this setting? ______ bpm

b. Now decrease the temperature to 10Â°C. What were your bubbles per minute? ______ bpm

c. Based on your data, how does a decrease in temperature affect the rate of photosynthesis.

12. Alter the variables in order to determine which combination leads to the highest rate of photosynthesis. Which combination of settings produced the highest number of bubbles per minute? a. Temperature: ________

b. Light: ________

c. CO2: ________

Photosynthesis Tutorial: http://www.phschool.com/science/biology_place/biocoach/photosynth/overview.html

Use this site to answer questions about photosynthesis.

13. In the blank portion of this paper, draw the picture which shows the overall process of photosynthesis.

14. Write the chemical equation for photosynthesis.

15. Photosynthesis converts _________________ energy into the ____________________ energy of sugars and other organic compounds.

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BIOL 1209 : Quiz 4 Answer Key

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