BIOL 1202 : Exam 3 Test Bank Questions

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15 Mar 2019

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Exam 3 Test Bank 2 1

True or False: Guard cells expand when K+ gets pumped into the cells

True

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Exam 3 Test Bank 2 2

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Exam 3 Test Bank 2 3

9) Which two elements make up more than 90% of the dry weight of

plants?

A) carbon and nitrogen

B) oxygen and hydrogen

C) nitrogen and oxygen

D) oxygen and carbon

E) carbon and potassium

Answer: D

10) The bulk of a plant's dry weight is derived from

A) soil minerals.

B) CO2.

C) the hydrogen from H2 O.

D) the oxygen from H2O.

E) the uptake of organic nutrients from the soil.

Answer: B

31) Which soil mineral is most likely leached away during a hard rain?

A) Na+

B) K+

C) Ca++

D) NO3-

E) H+

Answer: D

Pull up a root and find it has bulbs. What is happening?

• Its benefitting from a mutualistic relationship btw

bacteria and roots

50) The function of a root nodule's leghemoglobin is to

A) extract macronutrients from the soil.

B) regulate the supply of oxygen to Rhizobium.

C) promote ion exchange in the soil.

D) form a mutualistic relationship with insects.

E) supply the legume with fixed nitrogen.

Answer: B

Cut grass at ground level, come back and its just as tall. What caused

it to grow?

Apical meristem

53) What is the mutualistic association between roots and fungi

called?

A) nitrogen fixation

B) Rhizobium infection

C) mycorrhizae

D) parasitism

E) root hair enhancement

Answer: C

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True or false: guard cells expand when k+ gets pumped into the cells. 3: which two elements make up more than 90% of the dry weight of plants, carbon and nitrogen, oxygen and hydrogen, nitrogen and oxygen, oxygen and carbon, carbon and potassium. Answer: d: the bulk of a plant"s dry weight is derived from, soil minerals, co2, the hydrogen from h2 o, the oxygen from h2o, the uptake of organic nutrients from the soil. Answer: b: which soil mineral is most likely leached away during a hard rain, na, k, ca+, no3, h+ Pull up a root and find it has bulbs. Cut grass at ground level, come back and its just as tall. What caused it to grow: what is the mutualistic association between roots and fungi called, nitrogen fixation, rhizobium infection, mycorrhizae, parasitism, root hair enhancement. They have adventitious roots and absorb stuff through their: hyphae form a covering over roots.

Related Questions

Microbiology Unit 2 Applied and Environmental Assignment Part 1: Identify Nutritional requirements from Chapter 6&14 (and review from chapters 1 & 2) 1. Determine which of the 4 macromolecules require the following elements: a. Carbon: carbohydrates___ lipids___ proteins___ nucleic acids___ b. Nitrogen: carbohydrates___ lipids___ proteins___ nucleic acids___ c. Sulfur: carbohydrates___ lipids___ proteins___ nucleic acids___ 2. The essential elements mentioned above are cycled through cells and the earth in biogeochemical cycles (the carbon, nitrogen, and sulfur cycles.)Select the correct answer or fill in the blanks to summarize these cycles: a. Carbon dioxide is taken in from the atmosphere by [autotrophs/heterotrophs] and converted to glucose through carbon ________________. When heterotrophs eat autotrophs they use catabolism to break down glucose to make ATP and waste carbon is released as ___________. b. There is plenty of nitrogen available in the atmosphere but it is not accessible to organisms because it is in the form of Nitrogen gas (N2). N2 is fixed by [bacteria/plants/animals] and converted to ammonia (NH3.) NH3 can be used by [bacteria/plants/animals] to build their cells. Next, by consuming food with amino acids,[bacteria/plants/animals] can get access to nitrogen for their own cellular needs. c. There is also a good quantity of sulfur in dirt, rocks, and the atmosphere. Sulfur cycles between H2S => S0 => SO4 => SH groups in Proteins => back to H2S.Using _________________ respiration, anoxygenic photosynthesis, and chemolithoautotrophy [bacteria/plants/animals]convert H2S and S0 to SO4 which is taken in by [bacteria/plants/animals] and used to build their cells. When [bacteria/plants/animals]eat plants they take in essential amino acids containing sulfur and recycle these to make their proteins. d. _________________ break down waste and dead organisms and recycle nutrients back into the cycles. *The C and N are summarized here: https://youtu.be/2D7hZpIYlCA and https://youtu.be/leHy-Y_8nRs 3. Match the main metabolic classifications to the description: Classifications: photoautotroph/ photoheterotroph/ chemoautotroph/ chemoheterotroph o A microbe that makes its own food by taking carbon from CO2 in the atmosphere and its energy from sunlight o A microbe that makes its own food by taking carbon from CO2 in the atmosphere and its energy from reduced inorganic chemicals o A microbe that eats other organisms to get organic carbon and energy o A microbe that eats other organisms to get organic carbon but gets energy from sunlight 4. Identify the phases of the bacterial growth curve and define what occurs in each phase Phase A = ______________ Definition: Phase B = ______________ Definition: Phase C = ______________ Definition: Phase D = ______________ Definition: Part 2: Unique ecosystems containing microbes 5. Watch the video that shows hydrothermal vents: https://youtu.be/RO3nO98gH_M a. Describe bacteria that live at the vents using terms from the unit 2 reading guide: ________________________________________________________________________ b. Write a 2-3 sentence reflection about hydrothermal vents and the contribution of microbes to this ecosystem: 6. Apply what you have learned to the TED-Ed video about Biofilms: https://youtu.be/pHLP5CZMnL4 a. Give the terms for cell structures mentioned in the video that we learned in Chapter 4 and 7: i. âsticky appendagesâ thatallows bacteria to attach and begin the biofilm: _______________ ii. Extracellular matrix/gooey matrix that holds cells together: ____________________________ iii. Exchange genetic information while packed together: ____________________________ iv. Communicate with each other by _________________________________________ sensing. v. Produce chemical to kill microbial competitors: ____________________________ factor.

Multiple Choice

1. Which of the following describes lipids?

a source of nutrients for organisms â¨

energy-storage molecules â¨

molecules having structural role in membranes â¨

molecules that are part of hormones and pigments â¨

all of the above â¨

2. Molecules bearing both polar and nonpolar groups are said to be which of the following?

a. hydrophilicâ¨

b. amphipathic

c. hydrophobic

d. polyfunctional

3. By definition, carbohydrates contain which elements?

carbon and hydrogen â¨

carbon, hydrogen, and nitrogen â¨

carbon, hydrogen, and oxygen â¨

carbon and oxygen â¨

4. Monosaccharides may link together to form polysaccharides by forming which type of bond?

a. hydrogen

b. peptideâ¨

c. ionicâ¨

d. glycosidic

5. Which of the following is the name for molecules whose structures are nonsuperimposable mirror images?

structural isomers â¨

monomers â¨

polymers â¨

enantiomers â¨

Which of the following is an organism that obtains its energy from the transfer of electrons originating from chemical compounds and its carbon from an inorganic source?

a. chemoautotroph

b. chemoheterotroph

c. photoheterotroph

d. photoautotroph

7. A cell might perform anaerobic respiration for which of the following reasons?

It lacks glucose for degradation. â¨

It lacks the transition reaction to convert â¨pyruvate to acetyl-CoA. â¨

It lacks Krebs cycle enzymes for processing â¨acetyl-CoA to CO2. â¨

It lacks a cytochrome oxidase for passing â¨electrons to oxygen. â¨

8. Which of the following is not an electron carrier within an electron transport system?

a. flavoprotein

b. ATP synthase

c. ubiquinone

d. cytochrome oxidase

9. Which of the following is the purpose of fermentation?

a. to make ATP

b. to make carbon molecule intermediates for anabolism

c. to make NADH

d. to make NAD+

10. Which of the following processes produces hydrogen sulfide?

anoxygenic photosynthesis â¨

oxygenic photosynthesis â¨

anaerobic respiration â¨

chemoautrophy â¨

11. In which growth phase would you observe the most endospores in a Bacillus cell culture?

death phase â¨

lag phase â¨

log phase â¨

log, lag, and death phases would all have roughly â¨the same number of endospores. â¨

12. Which of the following is the best definition of generation time in a bacterium?

a. the length of time it takes to reach the log phase â¨

b. the length of time it takes for a population of â¨cells to double â¨

c. the time it takes to reach stationary phase â¨

the length of time of the exponential phase â¨

If a culture starts with 50 cells, how many cells will be present after five generations with no cell death?

a. 200

b. 400

c. 1600

d. 3200

14. During which phase would penicillin, an antibiotic that inhibits cell-wall synthesis, be most effective?

death phase â¨

lag phase â¨

log phase â¨

stationary phase â¨

15. Pseudomonas aeruginosa is a common pathogen that infects the airways of patients with cystic fibrosis. It does not grow in the absence of oxygen. The bacterium is probably which of the following?

an aerotolerant anaerobe â¨

an obligate aerobe â¨

an obligate anaerobe â¨

a facultative anaerobe â¨

16. Which of the following refers to photosynthesis performed by bacteria with the use of water as the donor of electrons?

a. oxygenicâ¨

b. anoxygenic

c. heterotrophic

d. phototrophic

17. Which term best describes the relationship between pathogenic bacteria and humans?
A. amensalism

B. commensalism

C. parasitism

D. predation

18. Which describes bacteria that require low concentrations of oxygen to survive (less than that in the current atmosphere)?

A. facultative anaerobes

B. microaerophiles

C. obligate aerobes

D. obligate anaerobes

19. Cyanobacteria produce which of the following?

A. hydrogen sulfide gas
B. large quantities of ammonia

C. oxygen*
D. sulfuric acid

20.How do Archaea differ from Bacteria?

A. Archaea are found exclusively in extreme habitats.
B. Archaea have ether linkages in their cell membranes.*

C. Archaea have peptidoglycan cell walls.

D. Archaea lack a nucleus.

QUESTION 1

A scientific hypothesis must be testable.

True

False

QUESTION 2

A(n) ____________________ is a set of components that functionand interact in some regular way.

QUESTION 3

Which of the following is true of matter?

	a.	It can exist as two physical states.
	b.	It can exist as four chemical forms.
	c.	It can exist as three physical states.
	d.	It can exist as a physical state or as a chemical form.
	e.	It can exist as three chemical forms.

QUESTION 4

Which of the following is the best definition of science?

	a.	Data supported by small amounts of evidence
	b.	A field that is never investigated using statistical tools andmodels
	c.	Study that is best described as a collection of opinions
	d.	A broad field of study focused on discovering how natureworks
	e.	A field in which observations are rarely tested

QUESTION 5

The second law of thermodynamics says that whenever energy isconverted from one form to another in a physical or chemicalchange, ____.

	a.	the second form of energy will always be kinetic
	b.	we end up with lower-quality or less useable energy than westarted with
	c.	more energy will be present in the second form
	d.	light is produced
	e.	heat is absorbed

QUESTION 6

The majority of Americans using food banks are over the age of65.

True

False

QUESTION 7

A climax community reaches a peak phase of growth and then, aspart of its cycle, dies.

True

False

QUESTION 8

Tropical rainforests occupy lmore than 15% of the global landarea.

True

False

QUESTION 9

The following macronutrient does not occur as a gas:

		Oxygen
		Nitrogen
		Phosphorous
		Carbon
		Hydrogen

QUESTION 10

The "tragedy of the common" refers to the decimation of trees inthe Boston Common.

True

False

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BIOL 1202 : Exam 3 Test Bank Questions

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