agenda for today 7:45-8:30- interactive obj. 1, 2, and 3 on dyknow 8:30-8:45: whiteboards/restroom...

Agenda for Today

7:45-8:30- Interactive Obj. 1, 2, and 3 on DyKnow

8:30-8:45: WhiteBoards/Restroom Breaks

8:45-9:30- Interactive Obj. 1, 2, and 3 on DyKnow

9:30-9:45: WhiteBoards/Restroom Breaks

9:50-11:00 am- USA Test Prep Sign up and then a Practice Test on USA Test Prep (if 9th) and practice EXIT Level Test if

11th/12th

Objective 1.

Write these in order, please.

ConclusionHypothesisProblemDataProcedure

Circle the independent variable in this graph.

Control vs. Constant

Students get the word CONTROL mixed up with CONSTANT a lot.

If determining how hot and cold temperatures affect cricket chirps, what might be a CONTROL in the experiment?Possible Answers:

A) Amount of chirps at room temperature.B) The type of cricket.C) The number of chirps.

Scientific Method Practice QuestionA student investigates the effects of five brands of fertilizer on plant growth and concludes that Brand X works the best. Which of the following would best communicate this conclusion?Possible Answers:

A) A list of the ingredients in each brand of fertilizer used.B) A graph showing the growth rate of plants grown with different fertilizers.C) A description of the role of different nutrients in plant growth.D) A diagram showing the conditions in which each plant grew.

In that same setup, what is an INDEPENDENT variable in this particular experiment (read again if you need to)?

HINT: Go back to slide 3 for help.Possible Answers:

A) plant growthB) type of soilC) type of fertilizerD) type of plant

21) Which of the following will allow measurement of a liquid’s

volume with the greatest precision?A 50 mL cylinder graduated in 1 mL incrementsB 100 mL cylinder graduated in 0.5 mL incrementsC 100 mL cylinder graduated in 1 mL incrementsD 200 mL cylinder graduated in 5 mL increments

Possible Answers: A-D

As temperature drops to the dew point, clouds form in the

atmosphere, and dew forms on ground surfaces. A scientist

proposes that adding more water molecules to the atmosphere will change the dew point. This

proposal is —A an invalid observationB a valid hypothesisC an invalid problemD a valid conclusion


Obj. 2

Prokaryotes

Eukaryotes

Cells Alive• The link is www.cellsalive.com

• We will look at the difference between a plant and animal cell as well as their structure.

• We will also look at cell division (mitosis and meiosis).

______________________________Creates body cells

______________________________Creates sex cells.

______________________________Creates 4 haploid cells.

______________________________Creates 2 diploid cells.

http://www.cellsalive.com/

Which of these is a function of the cell membrane in all cells?

A Producing cellular nutrients B Preserving cellular wastes C Neutralizing chemicals D Maintaining homeostasis


Hemoglobin carries oxygen to body cells. Which body system contains hemoglobin?

A Circulatory system B Respiratory system C Endocrine system D Nervous system


Which is a characteristic of members of the plant kingdom that distinguishes them from members of the animal kingdom?

A Storage of energy in chemical bonds

B Exchange of H2O with the environment

C Use of mRNA during protein production

D Use of chlorophyll for solar-energy transformation


DNA Workshop Activity Link

• When you copy DNA, you make more _______________________________.

• In transcription, you make _____________.

• In translation you make: _______________.

http://www.pbs.org/wgbh/aso/tryit/dna/#

http://www.pbs.org/wgbh/aso/tryit/dna/

A Adenine and

thymine pair with each other.

B Adenine binds with phosphates, while thymine binds with nitrates.

C Adenine and thymine are identical in chemical composition.

D Adenine bases contain a form of thymine.

Erwin Chargaff studied the DNA of organisms within a single species. Chargaff discovered that the amount of adenine is about equal to the amount of thymine. Which of these explains why the ratio of adenine to thymine is nearly 1:1?


The information in the box identifies some of the organs of the kitten. Which of the following is identical for every cell in each of the four organs?

A Amount of ATP B Function of cell C Size of cells D Genes in DNA


This illustration is an example of a normal DNA sequence. Which of the following represents a single base change in the sequence?

A.

B.

C.

D.


Pelicans prevent serious wing damage by entering the water in the manner shown above. Which two organ systems in the pelican work together the most to accomplish this maneuver?

A Circulatory and nervous systems B Nervous and muscular systems C Muscular and digestive systems

D Digestive and circulatory systems


Genetic ProblemsTt, tt, TT

*Please write the red symbols in the correct place.

Homozygous dominant:________

Homozygous recessive:________

Heterozygous: _________

Practice Genetic Problem

• The allele “T” (tall) is dominant to “t” (short) in a type of plant. If a heterozygous plant is crossed with a short plant, what will the offspring be?

Objective 3

Some mesquite trees have deeper roots than any other plant in the desert. How are deep roots an adaptation for survival in the desert?

F Deep roots can protect the tree from predators. G Roots encounter cooler conditions far below the desert surface. H Roots can extend great distances to reach water. J Deep roots interact with beneficial bacteria below the surface.


Virus vs. Bacteria

-Can cause disease-So small, cannot be seen by microscope-Needs host to reproduce-Is a prokaryote-Is not living

-Can be destroyed byAntibiotic-Can be prevented with vaccine-Can move with flagella-Has genetic material

Which of the following is found in both cells and viruses?

A Silica B Genetic material C Digestive cavity D Flagella


Which of these does a virus need in order to multiply?

A Chloroplasts from a host cell

B A host cell to provide oxygen for the virus

C New ADP from a host cell D A host cell to replicate the

virus’s DNA


Which of the following cannot metabolize nutrients?

F

G

H I


People infected with the human immunodeficiency virus (HIV) have an increased risk of dying from secondary infections. Which of these best explains how HIV increases the danger of secondary infections?

A HIV produces antigens that damage red blood cells. B HIV adds genetic material from harmful microbes. C HIV destroys helper T cells. D HIV consumes beneficial microbes in the body.


Many species of bacteria can be found in the human mouth. Which of these explains the great variety of bacteria in the mouth?

F Large volumes of air cause bacteria to change form. G Salivary glands cause mutations in bacterial

populations. H The presence of nutrients makes the mouth a

favorable habitat. J Calcium in the teeth provides a suitable pH

environment.


F Photosynthesis occurring G Wood regenerating H Decomposers growing J Genes transforming

The picture shows a piece of rotting wood. Which of these does the picture demonstrate?


F It limits water loss through transpiration. G It conserves oxygen produced in photosynthesis. H It recycles carbon dioxide within plant systems. J It protects plant tissues from predators.

Cacti grow slowly compared to most other plants. The fact that cacti keep their stomata closed for much of the day can help explain this growth characteristic. Which of these best explains the advantage of keeping stomata closed during the day?


Which one of these is a food web based on the relationships described in the box above?

A B C D


Mom, look what the cat dragged in!

Which of the following best describes the situation of the mother cat caring for the orphan skunks?

A.MutualismB.CommensalismC.PredationD.Territorialism


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.


I will let you know which practice test to take.

agenda for today 7:45-8:30- interactive obj. 1, 2, and 3 on dyknow 8:30-8:45: whiteboards/restroom...

Documents

c adenine

b adenine

body cells

body system

d adenine bases

form of thymine

sex cells

haploid cells