DAILY TAKS3rd 6 weeks

Do I have to?

If you like extra credit on your tests, yes. If you have something else you need to

be doing, no. Every question correct and stickered will

be worth ½ a point on your unit test. I will do this every day at the beginning of

class.

1. Loriciferans are microscopic multicellular animals that live in various marine sediments. Scientists have discovered genera of Loriciferans in a deep-sea habitat that lacks oxygen. Before this discovery, some prokaryotes and some unicellular eukaryotes were known to inhabit anaerobic environments. Among the newly discovered Loriciferans is Spinoloricus sp. nov., which is pictured below Scientists determined that organisms of the genus Spinoloricus were eukaryotes and not prokaryotes because Spinoloricus cells have —

A. flagellaB. hereditary materialC. cell wallsD. nuclear membranes

2. A student investigates the effects of five brands of fertilizer on plant growth and concludes that Brand X works best. Which of the following would best communicate this conclusion?

A. list of the ingredients in each brand of fertilizer used

B. graph showing the growth rate of plants grown with the different fertilizers

C. description of the role of different nutrients in plant growth

D. diagram showing the conditions in which each plant grew

3. In a single-displacement reaction, the chemical change shown above occurs.

Which equation supports the law of conservation of mass?

A. w = y

B. x = z

C. w + x = y + z

D. w + x = 2(y + z)

4. Scientists recently found a fossil representing a newly discovered animal species that they named Tiktaalik roseae. The fossil indicates that Tiktaalik roseae had a fish-like jaw and scale-covered fins. The front fins had bones similar to those of a shoulder, an upper arm, an elbow, a forearm, and a wrist. This information suggests that populations of Tiktaalik roseae most likely livedin which two environments?

A. In saltwater and in freshwater

B. In water and on land

C. On land and in treetops

D. In glaciers and in caves

5. The picture shows the results of pouring a blue liquid into a clear liquid and allowing the mixture to settle for 25 minutes. Compared to the clear liquid, the blue liquid is more —

A. massive

B. dense

C. viscous

D. soluble

6. The bacteria Bacillus thuringiensis produce protein crystals that are toxic to the digestive system of insects. How can these bacteria be used to control insects in crops?

A. Apply the bacteria to growing plants.

B. Expose the bacteria to low levels of light.

C. Remove plants from areas containing the bacteria.

D. Treat the bacteria with a solution of the protein crystals.

7. Which of these is a food web based on the relationships described above?

A. .

B. .

C. .

D. .

8. This picture shows a small section of a solar power plant. Which of these decreases the energy production at such power plants?

A. Cloudy skies

B. Ozone in the air

C. Hot weather

D. Low humidity

9. Which of these could be used to determine whether a substance is a base?

A. Thermometer

B. Litmus paper

C. Balance

D. Bunsen burner

10. When a DVD is read, laser light touches the DVD surface and is then measured at location A. What allows light to return to location A after striking the DVD surface?

A. Conduction

B. Refraction

C. Magnification

D. Reflection

11. Which of these best explains how mutation can be beneficial to an organism?

A. Phenotypic change may create an advantage over other organisms.

B. Recombined genetic material improves genotype stability.

C. Mitosis becomes a favored means of reproduction.

D. Deoxyribose sugars develop into additional nucleotides

12. A chemistry student’s investigation is described below.

A. Mass of 15 g

B. White color

C. Density of 2.17 g/cm3

D. Solubility in water

The student determines that the unknown substance is sodium chloride. Which of the following is an extensive property of sodium chloride?

13. The box contains some facts about kidneys and dialysis. Which of the following best explains why dialysis works?

A. Dialysis reduces the size of proteins.

B. Proteins are dissolved by urine.

C. Dialysis filters proteins from solution.

D. Proteins transport membrane fragments.

14. The bonding characteristics of oxygen are most similar to the bondingcharacteristics of —

A. hydrogen

B. silicon

C. helium

D. sulfur

15. How is the excretory system most likely to respond when an animal is thirsty?

A. By relaxing the smooth muscles

B. By retaining body fluids

C. By absorbing heat from lymph glands

D. By releasing hormones

16. The diagram below shows a glider on an air track with three photogates. Each photogate determines the velocity of the glider as it moves down the air track.

Which graph best represents the glider’s velocity as it moves down the air track?

17. Compounds with the same chemical composition may have different densities because they —

A. have differences in reactivity

B. are able to bond with oxygen

C. vary in solubility

D. exist in different phases

18. An advertisement claims that a certain truck has the most powerful engine in its class. If the engine has more power, which of the following can the truck’s engine do, compared to every other engine in its class?

A. Produce fewer emissions

B. Operate more efficiently

C. Perform work faster

D. Accelerate longer

19. The diagram below shows how a paramecium maintains homeostasis. A paramecium normally lives in a hypotonic environment in which water continually diffuses into the cell. To maintain homeostasis, the paramecium must pump out large amounts of water using its contractile vacuole.

A. Water will diffuse into the paramecium.

B. Water will diffuse out of the paramecium.

C. Salt will be pumped out of the paramecium by the vacuole.

D. Salt will be pumped into the paramecium by the vacuole.

If the paramecium is then placed in a hypertonic environment, which of the following will occur?

Use the following formulas for the next problem

20. A turn on a racetrack is 915 meters long and can be considered a semicircle with a radius of 291 meters, as shown in the diagram below.

A. 0 m/s2

B. 3.14 m/s2

C. 12.8 m/s2

D. 61.0 m/s2

What is the centripetal acceleration of a car that completes the semicircular turn at a constant speed in 15.0 seconds?

21. Which of the following elements has the smallest atomic radius?

A. Sulfur

B. Chlorine

C. Aluminum

D. Sodium

22. The diagram shows several phases of the nitrogen cycle. Which of the following describes the most likely effect of removing some plants from the area by using chemical herbicides?

A. The rate of erosion of rocks on the ground would be slowed.

B. The flow of necessary nutrients would be disrupted.

C. The ability of plants to complete photosynthesis would be increased.

D. The infiltration of water into the ground would be halted.

23. Which of the following cannot metabolize nutrients?

A. . hi

B. .

C. .

D. . :/

24. About 10% of the energy at one trophic level is passed to the next level. What usually happens to the energy that is not passed to the next trophic level or used to carry out life processes?

A. It is given off as heat.

B. It is stored as vitamins.

C. It is used in reproduction.

D. It is used in protein synthesis.

25. Which additional product balances this reaction?

A. 4OH(aq)

B. CH4(g)

C. H2O2(g)

D. 2H2O(g)

26. An empty cup was tightly covered with plastic wrap, and a few grains of salt were sprinkled on top of the plastic. When a tuning fork was struck and placed slightly above the plastic wrap, the salt began to move. Which characteristic of waves does the movement of the salt best demonstrate?

A. Echo formation

B. Diffraction

C. Resonance

D. Specular reflection

27. What is the net force exerted on a 90.0 kg race-car driver while the race car is accelerating from 0 to 44.7 m/s in 4.50 s?

A. 9.8 N

B. 20 N

C. 201 N

D. 894 N

28. The label shown above contains information about some harmful effects of acetone. A group of students plans to use acetone to rinse out a glass container.A second group of students is working at the same lab table. Which of the following lab procedures should the second group of students avoid?

A. Heating water with an open flame

B. Pouring hydrochloric acid into a beaker

C. Filtering precipitates from a liquid solution

D. Collecting oxygen from plants in a test tube

29. The graph shows how the momentum of a given mass changes during a period of motion. According to the information, what is the momentum in kg m/s at 2.75 seconds? Record your answer in the space below.

30. Power plants that discharge warm water into rivers have a negative effect on aquatic life. This is because the higher water temperature —

A. increases the pressure of the river water

B. increases the pH value of the river water

C. decreases sediment solubility in the river water

D. decreases the dissolved oxygen in the river water