Bio 221, Exam 2                                                        

10/12/01

Use Scantron For Questions 1 - 40 (Pages 1 & 2 & 3)

1) ______ Approximately 95% of the energy needed to keep a cell alive is generated in or by the:

A) mitochondria.  B) ribosomes.  C) cytoplasm.  D) endoplasmic reticulum.  E) tiny cans of Red Bull.

2) _______ Approximately 5% the energy needed to keep a cell alive is generated in or by the:

A)   mitochondria.  B) ribosomes.  C) cytoplasm.  D) endoplasmic reticulum.  E) tiny cans of Red Bull.

3) ______The organelle that contains many digestive enzymes is the: A) ribosome

B) mitochondria.  C) lysosome.  D) nucleolus.  E) Golgi body.  

4) ______Smooth endoplasmic reticulum:  A) is the site of ATP synthesis. 

B) synthesizes proteins.  C) is involved in lipid metabolism  D) A & B.  E) B & C. 

5) _____ Rough endoplasmic reticulum:  A) is the site of ATP synthesis. B) synthesizes proteins. 

C) is involved in lipid metabolism  D) A & B.  E) B & C.

6)______The nucleolus is the site of: A) rRNA synthesis.  B) protein storage. C)   all the cell's genes. 

D) chromosome replication.  E) tRNA synthesis.

7) ______ "Forms networks in the cell, involved in cell shape and movement, and contains actin"

describes: A) microfilaments.  B) microtubules.  C) intermediate filaments. D) centrioles.

E) filaments of my imagination.

8) _____ During protein synthesis, amino acids are carried to ribosomes by:

A) mRNA.  B) tRNA. C) rRNA. D) cRNA.  E) mtvRNA

9) ______ The nucleus and a mitochondrion are similar in that they:  A) contain a nucleolus. 

B) contain ribosomes.  C) have double membranes.  D) produce ATP.  E) found on page 24 of the text.

10) ______ An anticodon would be found in: A) cRNA.  B) mRNA.  C) rRNA. D) tRNA. 

E) the Book of Revelation.

11) ______ The production of mRNA using DNA as a template is called:  A) translation. 

B) transcription.  C) replication.  D) transduction.  E) translocation.

12) ______ Initiation, elongation and termination are phases of: A) replication.

B) transcription.  C) mitosis.  D) translation.  E) the TV show "Blind Date."

13) _______ The granules of the stratum granulosum are ______ granules. 

A) keratin.  B) collagen.  C) actin.  D) tubulin.  E) melanin.

14) ______ Osteocytes and chondrocytes reside in spaces called:  A) GAGs.  B) osteons.

C)   lacunae.  D) lagunas.  E) blue lagoons.

15) _______ A white blood cell engulfing a bacterium is an example of:  A) pinocytosis. 

B) osmosis. C) exocytosis.  D) phagocytosis.  E) receptor mediated endocytosis.

16) ______ When a membrane-bound vesicle in the cytoplasm fuses with the cell membrane

and releases its contents to the outside, this is called: A) diffusion. B) phagocytosis

C) endocytosis.  D) exocytosis.  E) pinocytosis.

17) _____ Glucose can enter cells by: A) co-transport with sodium  B) facilitated diffusion.

             C) osmosis. D) all of the above. E) A & B.

18) ______ The movement of a solute against its concentration gradient is a characteristic of:

A) osmosis.  B) simple diffusion.  C) active transport. D) facilitated diffusion. E) B & D.

19) ______ In which layer of the epidermis are melanocytes found?  A) stratum basale.                 

B) stratum lucidum.  C) stratum pigmenteum. D) stratum granulosum.

20) ______ Which layer of the epidermis is NOT present in all types of human skin?

A) stratum basale. B) stratum lucidum.  C) stratum spinosum D) stratum granulosum.
E) none of the above.

21) ______ At the beginning of prophase: A) cytokinesis begins. B) DNA is replicated.

C) chromosomes separate. D) the nuclear envelope dissolves. E) centrioles disappear.

22) _____ At the beginning of anaphase:  A) mitosis begins.  B) DNA is replicated. 

C) chromosomes separate.  D) the nuclear envelope dissolves.  E) cytokinesis begins.

23) _______ Epithelial tissue is classified on the basis of:  A) cell type and matrix.

B) layering and shape of cells.  C) layering and function.  D) shape of cells and matrix.

E)   no logical reason.

24) ______ Connective Tissue is classified on the basis of:  A) cell type and matrix.

B) layering and shape of cells.  C) layering and function.  D) shape of cells and matrix.

E) no logical reason.

Matching:  Match the tissue type with its characteristic, feature, or component.

Note: For ALL the matching questions, answers can be used more than once!

25)________ glia    A) epithelial
26) ______ basement membrane B) connective
27) ______ fibroblasts   C) cardiac muscle
28)   _____ multincleated & striated    D) nervous
29)  ______ forms secretory glands    E)  skeletal muscle
30)  ______ intercalated discs  

Match the type of epithelium with the sketch or description

31)    "Tissue Graphic"                                                  A) Stratified squamous

                                                                                    B) Simple squamous

                                                                                   C)  Simple cuboidal

32) "Tissue Graphic"   

                                                                                    D) Stratified cuboidal

                                                                                    E)  Simple columnar

33) ______  Found in large ducts of sweat glands.

34 ) ______ Found in the thin linings of the lung and capillaries.

35) _______ Found in linings of intestine.  May contain goblet cells.

Matching: Match the tissue type with its description, location or characteristic.

36) ______. Found in most joint surfaces    A) hyaline cartilage
37)  ______ Found in the ear (pinna)  & epiglottis     B) elastic cartilage
38) _______ Abundant in dermis     C) loose (areolar) connective tissue
39) ______. Edema occurs in this tissue      D) dense regular connective
40) ______.  Found in the tendons       E) dense irregular connective

End of Scantron Section

Fill In (1-2 pts each)

Facilitated diffusion and active transport are similar processes in that they both  

require a/an ___________________ _____________________ in the cell membrane.

Osmosis is the movement of _______________ across a/an ________________________

membrane from an area of ______________  _______________concentration to an area

of _________________ ________________ concentration. 

A chromosome is the condensed form of  _________________________.

The sodium-potassium pump carries out the _______________________ transport of

sodium into/out of (circle 1) the cell and potassium into/out of (circle 1) the cell.

mRNA leaves the nucleus via _________________ in the nuclear envelope.

If G - A - C is a sequence on DNA, ______- ________ - _________ is the codon sequence.

There are ______(#) codons and each is a code for  a/an ______________ _______________.

The folds of the inner membrane of mitochondria are called _______________.

Sebaceous glands of the skin secrete ___________________ (be specific).

The "rule of 9's" is a way to estimate _______________________________________.

Skin can manufacture vitamin ________ in response to _______ _________________.  This

vitamin is needed to _______________________________________________________.

What are two important differences between basal cell carcinoma and malignant melanoma?  (4 pts)

Label (chemical structures, regions) this sketch of a generic cell membrane. (8 pts)

What is "DHT" and how does it relate to hair loss? (3 pts)

Extra-credits

Tay Sachs is an example of a " ________________ storage disease" because there is a dysfunction in that organelle.

What is trichosiderin?

Air pockets in the medulla of hair is the basis of _____________ ________________.

What is an endonuclease?

What is a pheromone?

How do you make a pharaoh moan?

The San Francisco 49ers, the San Diego Chargers, and the CLU Kingsmen Football team all

have records of ______Win(s)   ______ Loss(es) this season.