Darvish final

4. Testosterone belong to which of the following? A) proteins B))phospholipids C) steroids D) fat E) none of the above

) C) steroids

19. Which measurement seems most logical if one is describing the size of an animal cell? A. 1-2 mm B. 0.1-0.2 mm C. 2 mm D. 5-10 nm E. 1 nm

. B. 0.1-0.2 mm

B. osmosis. 44. The endocytotic A. facilitated diffusion. process by which tiny packets of luid are brought into the cell is called Cpinocytosis. D. phagocytosis. Е. exocytosis

. Cpinocytosis.

20. Translation consists of which of the following? a) the conversion of genetic information b) the conversion of genetic information from DNA nucleotides into RNA nucleotides from the language of RNA to the language of proteins c) the addition of nucleotides to a DNA template d) the conversion of genetic information from the language of proteins to the language of enzymes

20. Translation following? conversion of genetic information from DNA nucleotides a) the conversion of genetic information from the language of RNA to the language of proteins

9. Put the following in the order from molecule 2. organ 3. atom 4. organelle 5. tissue 6. Cell smallest to the largest.

3,1,4,6,5,2

Which of the follwing substances could be a coenzyme?

A zinc atom

32. Atoms with different electronegativity share electrons unequally, this results in a bond. A) True B) False

B) False

35. Organic molecules which contain the reactive group carbonyl (CO0-) are considered A) As organic acids B) both as organic acids and ketones e both as aldehydes and ketones D) both as alcohols and aldehydes E) none of the above

A) As organic acids

24. As cell size increases, its volume increases or grows proportionately more than its surface area. A) True B) False

A) True

In anaphase chromosomes line along midline of cell. A) True False

A) True

55. Enzyme A) changing B) activity can be affected by the pH of the solution changing the concentration of its cofactor bonding between the amino of its coenzyme D) C) removing the hydrogen changing the concentration above acids in the enzyme E) all of the above

All of the above

36. Polar molecules do not dissolve in water. A) True B) False

B) False

29. When electrons are not equally distributed between the two atoms of a molecule, they are forming which type of bond A) ionic bond B polar covalent bond C) isotonic bond D) non-polar covalent bond E) all of the above

B polar covalent bond

11. The bond between oxygen and hydrogen in a water molecule is A) a hydrogen bond B) a polar covalent bond C) a nonpolar covalent bond Dj an ionic bond E) none of the above

B) a polar covalent bond

34. Transcription factors A bind RNA molecule and increase the rate of protein synthesis B) are important in initiating the processes of mRNA synthesis C) are important in transcription of RNA to protein D) are negatively charged and bind to RNA

B) are important in initiating the processes of mRNA synthesis

as 15. The presence of alpha helix structure which are stabilized by hydrogen bonds in one protein are referred to A) primary structure B) secondary structure C) tertiary structure D) quaternary structure E) none of the above

B) secondary structure

33) Generally, a chemical buffer is described as A) a strong acid or strong base that brings the pH of a solution to 7.0. B) weak acid and weak base that help prevent big changes in pH. C) a neutral molecule that does not influence the pH in any way. D) a weak acid that makes a solution slightly more basic by its presence.

B) weak acid and weak base that help prevent big changes in pH.

OWhich of the following structures utilizes A) Primary structure B)Secondary structure hydrogen, ionic, and covalent bond? C) Tertiary structure D) two of the above

B)Secondary structure

21. Which of the following is the location where amino acids are assembled in the order prescribed by th. MRNA?

B. ribosomes

Heating (45) inactivates enzymes by

Breaking the covalent bonds that hold the molecule together

22) Which feature is found in both prokaryotic and eukaryotic cells? A) mitochondrion B) Golgi body C) DNA D) centriole

C) DNA

26. Which of the following lysosomal disease is the result of accumulation of polysaccharide A) Tay Sachs diseaset B) Gaucher's disease C) Pompe's disease D) all of the above E) none of the above

C) Pompe's disease

E prostaglandins would the balloon be affected if it is filled with a 50% sucrose solution and then placed in a beaker of water? 17) Imagine a balloon is made from a membrane that's permeable to water but not sucrose molecules. How A) The balloon would not change in size or volume. B) The balloon would get smaller as it loses water. C)The balloon would get larger as it gains water. D) The balloon would eventually burst.

C)The balloon would get larger as it gains water.

37. Which of the following is the result of overproduction of cyclin D1 protein? a) Translation b)) Cancer c) mieosis d) elongation e) none of the above

Cancer

Enzyme activity can be affected by

Changing the PH of the solution

25. Regions of chromatin which is actively transcribed are called A) nucleosomes B) heterochromatin C) chromatose D euchromatin E) histones

D euchromatin

49. Which is avascular (lacks blood vessels)? A. Epithelial tissue B. Muscle tissue C. Nervous tissue D. Connective tissue E. All of the choices are correct.

D. Connective tissue

48. Which of the following is not a function of epithelial tissue? A. Secretion B. Physical protection C. Selective permeability D. Sensation E. No exceptions; these are all functions of epithelial tissue

D. Sensation

which of the following? 43. The fastest net movement of molecule from a higher concentration to a lower concentration is described by A) Excocytosis B) Active transport (C) Diffusion E) None of the above D) Facilitated diffusion

Diffusion

27. A peptide is synthesized from monomer of A) nucleotide B) nucleoside C) different bases D) four different bases and the sugar deoxyribose E) none of the above

E) none of the above

52. Microscopic folds that extend from the apical surface of certain epithelia to increase the surface area for absorption and secretion are called A. cilia. B. microvilli. C. flagella. D. mucus. E. desmosomes.

E. desmosomes.

T0, Which structure is enclosed in two membranes with cristae extending inward from the inner membrane? A., endoplasmic reticulum B. nucleus C. lysosome D. Golgi complex E. mitochondria

E. mitochondria

stratified squamous epithelium? Oral cavity B. Pharynx C. Vagina D. Esophagus 51. Which of the following is not lined by nonkeratinized E.Small intestine

E.Small intestine

Which of these statements regarding enzymes is true?

Enzymes are proteins that function as catalysts, enzymes display specificity for certain molecules to which they attach, an enzyme may be used many times over a specific reaction

Which is avascular?

Epitheial tissue

A. Cartilage 54. You would most likely find goblet cells in what type of tissue? B. Nervous tissue C. Muscle tissue D. Bone E. Epithelial tissue

Epithelial tissue

An avascular tissue composed mostly of cells with little to no extracellular material is most likely to

Epithlial tissue

38, Mutant P53 genes are found in all cancers A) True BY False

False

18) Which organelle is a stack of membranous sacs that sort proteins to their proper cellular location? A) centriole (B) endoplasmic reticulum C) Golgi apparatus D) lysosome

Golgi apparatus

Which of the following is not a function of the plasma membrane? A) It forms a selective barrier around the cell B) It plays a role in signal transduction C) It has receptors for chemical messages D) It is the control center of the cell E) None of the above

It is the control center of the cell

Which feature is not characteristic of epithelial tissue

Large amount of extracellular matrix

Nervous tissue consists predominantly of two cell types neurons and

Neuroglia

Extra points bon us 61. Heating (45 C) inactivates enzymes by by removing C) causing enzyme molecules to stick together phosphate groups from the enzyme A)) breaking the covalent bonds that hold the molecule together P breaking the hydrogen bonds that give the molecule its three-dimensional shape E) all of the above

P breaking the hydrogen bonds that give the molecule its three-dimensional shape

Which feature is not characteristic of epithelial tissue?

Polarity

A general name for an enzyme that transfers phosphate groups from ATP to a protein is

Protein kinase

ATPase 57, A general name for an enzyme that transfers phosphate groups from ATP to a protein is b There is no general name for such an enzyme Protein kinase Phosphatase

Protein kinase

Most of a cells enzymes are

Protiens

5. A lack of protein synthesis can result in A) a reduces the transport of specific molecules into the cell. B) an increase in the amount of enzymatic reactions occurring in the cell. C) an accelerated immune response by the body. D) an increased responsiveness of the cell to external stimuli. E) None of the above

Reduces the transport of specific molecules into the cell

The walls of kidney tubules are formed by epithelium, which functions in resorbing materials filtered from blood plasma such as nutrients, ions, and water. A. simple cuboidal B. simple squamous C. stratified cuboidal D. stratified squamous E. stratified columnar

Simple cuboidal

The walls of the kindey tubules are formed by what epithelium, which functions in resorbing materials filtered from blood plasma such as nutrients ions and water

Simple cuboidal

53. What type of epithelium A. Simple squamous (B. Stratified squamous C. Pseudostratified D. Transitional would be most suited for high levels of diffusion and filtration? E. Stratified columnar

Simple squamous

A what epithelium consists of a single layer of flattened cells attached directly to a basement membrane

Simple squamous

Which kind of tissue would you expect to find in an area of the body that expierences friction and wear and tear?

Stratified squamous epithelial tissue

30) How do the concentrations of H+ and OH- compare to each other in an acidic solution? AThe concentration of H+ is higher. B) The concentration of H+ is lower. C) The concentration of H+ is the same. D) Acidic solutions do not contain Ht.

The concentration of H+ is higher.

58. The active site of an enzyme is A) the region of a substrate that is changed by an enzyme B) the mony changeable portion of an enzyme that adapts to fit the substrates region of an enzyme that attaches to a substrate D) the region of a product that detaches from the enzyme

The region of an enzyme that attaches to a substrate

The active site of an enzyme is

The region of an enzyme that attaches to a substrate

by all living organisms? 45. What feature is shared A. They all have a B. They all have DNA. C. They all have cell walls. nervous system. E.) They all exhibit D. They all grow by adding molecules through the process of crystallization. internal change that matches external environmental changes.

They all have DNA.

60. Which of the following substances could be a coenzyme? A) a protein B) a polypeptide C) a zinc atom a vitamin molecule E) none of the above

a vitamin molecule

12. An organic acid is a molecule that A) accept hydrogen ions B) can release hydrogen ions C) when added to pure water can increase its pH D all of the above E) none of the above

can release hydrogen ions

) RNA is double helix but DNA is not by DNA contains a different base from RNA B) DNA is not a polymer, but RNA is A) RNA is a protein, while DNA is a nucleic acid 41. Which of the following statement best summarizes structural differences between DNA and

contains a different base from RNA

23/ The directs the cell's activities and stores hereditary information in the form of DNA. . Smooth endoplasmic reticulum b. Rough endoplasmic reticulum c. Golgi complex d. Nucleus

d. Nucleus

28. Which of the following statements regarding lipids is/are true? a. Lipids can serve as energy sources for cells b. All cell membranes contains lipids c. All cells contain lipids d. Lipids can function as hormones e.) All of the above

e.) All of the above

39. Specialized pancreatic cells produce insulin. How do you think these cells would secrete this product so that it can be used throughout the body? A. phagocytosis B. pinocytosis C. endocytosis exocytosis osmosis

endocytosis

) 7. Which of the following is an example of polysaccharides found in an animal cell? A) organic molecule B) starch glycogen D) glycolipids E) glycoprotein

glycogen

16. which of the following does not belong to lipid category? A) ketones B) triglyceride C) steroids D) glycogen E prostaglandins

glycogen

31. Which of the following macromolecules of life is not a polymer? A) carbohydrates By lipids C) nucleic acids D)proteins Ey all of the above are example of polymer

lipids

42. White blood cells engulf bacteria by means of A phagocytosis B. pinocytosis C. active transport D. facilitated diffusion Е. exоcytosis

phagocytosis

14. Which of the following can be characterized as an amphipathic molecule? A) triglycerides B) phospholipids C) pyruvate (D) ketone bodies E) prostaglandins

phospholipids

59. Most of a cell's enzymes are A lipids B) proteins amino acids D) nucleic acids E) carbohydrates

proteins

cells to divide is associated with B Increase in the A Decrease in the 40 In general reduction E) none of the above DY reduction in the size of the telomeres C) increase in the centromers attachment to the spindle fibers number of old organelles in the cytoplasm of cell number of mitochondria in the ability of animal in the cell

reduction in the size of the telomeres

A. Golgi complex 8. Which of the following has its own DNA independent of nuclear DNA? B. lysosomes C. ribosomes- D. peroxisomes E. mitochondria

ribosomes-

50. A epithelium consists of a single layer of flattened cells attached directly to a basement membrane. A. simple columnar B. simple squamous C. simple cuboidal D. stratified squamous E. stratified cuboidal

simple squamous

13. Which of the following functional groups is important in transfer of energy? A) the sulfhydryl B) the carboxyl C) the hydroxyl D) the phosphate E) the carbonyl

the sulfhydryl

D) two 3.Fatty acids with double bonds between their carbon elements are said to be A) unsaturated B) saturated C) completely hydrogenated D) triglycerides E) none of the above

unsaturated