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Biology quiz

Please read the following questions and answer them:

1) Explain thebenefit of having tiny small sized cells instead of few large ones.

2) List the common features of cells.

3) Explain the arrangment of the lipid bilayer molecules in the cell membrane.

4) What is the cell theory?

5) Compare between eukaryotes and prokaryotes (not less than 3 points)

PLEASE DONOT SEND THE ANSWERS AS ATTACHED FILES AS I HAVE A PROBLEM WITH OPENING ANY DOCUMENT THAT IS NOT 2007 .....
SO JUST PLEASE WRITE THE ANSWERS AS AN EMAIL AND SEND (OR ELSE I WON'T BE ABLE TO CORRECT SOME OF THE QUIZES)

THANK YOU

DON'T FORGET TO SMILE

The biology quiz

Dear Grade 10 students:
Your quiz tomorrow will be in ( Chapter 3 Sections 1 and 2)

Thank you
Don't forget to smile

Please check your Mail

Dear Grade 10 students

I'm sorry, i wasen't able to upgrade my blog for a while.

Your new material for this week will be :

1- Please make sure your are all done with your H.W. packet.
2- Please check your mail.
3- Please be on time for your online sessions.
4- This we should finish Chapter 4 ( cells and their environment)
5- The home work will be
a- section review for each section (3.2, 3.3, 4.1 and 4.2)
b- chapter 3 review
c- vocabulary folder for each section (3.2, 3.3, 4.1 and 4.2)

DON'T FORGET TO SMILE :)

Your quiz

Term 2 / Quiz 01


In the space provided Write the letter of the description that best matches the term or phrase:


1. Substrate a. all chemical reactions in an organism.

2. Electron microscope b. making an image look larger than its actual size.

3. metabolism c. uses beam of electrons to form an image of a specimen.

4. TEM d. ability to move or change matter.

5. activation energy e. light passes through one or more lenses to prduce a
magnified image of a specimen

6. magnification f. a measure of an image's clarity.

7. energy g. substance that an enzyme acts on.

8. resolution h. micrograph revealing cell's internal structure in fine details.

9. products i. pushing a boulder.

10. Light microscope j. newly formed substances.




In the space provided, write the letter of the term or phrase that best completes each statement or best answers the question:

1- Which scientist used a microscope to view the cells ?
a. Van Leeuwenhoek c. Schleiden
b. Hooke d. Virchow.

2- enzymes in your body probably work best at ………. Degrees celcius
a. 25. c. 30.
b. 37 d. 98

3- A millimeter is equivalent to
a. Half the diameter of a penny. c. more than a yard.
b. The width of a pencil tip. d. the length of a water molecule
.
4- The enzyme that breaks down hydrogen peroxide
a. amylase. c. catalase.
b. Carbonic anhydrase. d. hydrogenase.


5- Which of the following produces a highly magnkified 3D image of a cell?
a. Hand lens . c. light microscope.
b. Scanning tunneling microscope. d. electron microscope.

6- Enzyme activity is affected by
a. temperature. c. factors affecting the shape of the enzyme.
b. pH. d. all of the above

7. living specimens can be viewed using
a. Light microscope c. scanning tunneling microscope.
b. Electron microscope. d. Both (a) and (b).

8. A catalyst
A. Provides extra energy for a reaction.
B. lowers the activation energy.
C. Eliminates the activation energy of a reaction.
D. only allows irreversible reactions.

9. Without enzymes, the chemical reactions in your body would
a. Happens too fast. c. occur at much the same rate as they do now .
b. Read scientific reports. d. occur too slow .

10. The reversible reaction is the reaction that …….
a. Has no reactants
b. Has no products
c. Can proceed in both directions
d. None of the above

Thank you

Attention Grade 10

Dear Grade 10 students

Today is your biology quiz as shown in your schedules
Thats how you will do it

1- You will find the quiz on the blog.
2- You have to answer the quiz with in 45 mins and send the answers by e-mail. THE QUIZES WILL NOT BE ACCEPTED AFTER 45 MINS.

3- PLEASE SEND YOUR ANSWERS ON THIS E-MAIL (dalia.gennawi@gmail.com)

4- Please don't forget to smile.

I miss you all soooooooooooooooooooooooo much

Reaserch and old H.W.

Please grade 10 students.
1. You should have submitted the old homeworks by now, i mean by that those you took before and during the break. (including the internet researches that i asked for as the arab scientist, and the sheets that you received) , only a hand full of students completed their work.

YOU ARE LOSING A LOT OF GRADES. :((((

PLEASE CHECK ALL THE OLD POSTS FOR ANYTHING YOU MISSED

New material

1. Read and answer Chapter 3 sec. 1 and 2.
2. Answer sec. 3.1, 3.2 review. Due Date: Tuesday Nov. 24
3. Vocab. folder sec 3.1 and 3.2.
4. DON'T FORGET YOUR QUIZ IN SCHOOL NEXT SUNDAY ( 2.2, 2.3, AND 2.4)

DON'T FORGET TO SMILE.

The work covered this week

All grade 10 students
1. Reviewed Chapter 2 sections 1 and 2.
2. We finished Chapter 2 ( sec. 3,4)
3. We started Chapter 3 and finished sec. 1.

New material

All grade 10 students : i miss you all and here is your new material.

1. The term 1 test {Chapter 1 and Chapter 2 (sections 1 and 2)} Due Date: Wed. Nov 18
2. Read chapter 2 (sections 3,4) and answer their section reviews. Due Date: Thurs. Nov 19
3. Vocabulary folders for these 2 sections and chapter 2 review. Due Date: Sat. Nov 21
4. PLEASE NOTE THAT THERE WILL BE A PPT. FOR CHAPTER 2 POSTED VERY SOON.
5. dON'T FORGET TO SMILE.


THE NEW MATERIAL WILL BE EMAILED TO ALL OF YOU TODAY.

Where to find your work ??

1. Please check your email.
2. Download the attached file, write your answers.
3. resend your assignment by mail.
4. DON'T FORGET TO SEND THE ASSIGNMENTS THAT YOU TOOK LAST WEEK (Due tommorow).
5. If you didn't get the assignment sheet then you will find it in the email.
6. Don't forget to smile. :)

Extra Credit Packet Assignments

1. Vocab Folder Sec. 2.2 is to be sent typed Due Date: Thursday Nov. 5th
2. Section Review 2.2 and 2.3 Due Date: Thursday Nov. 5th
3. Pre test sheet Ch. 1 Due Date: Saturday Nov. 7th
4. Research ( Chemistry of cells) Due Date: Saturday N0v. 7th