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9 Jan 2018

What is true about asbestos: Select one or more: a. it causes the lysosomes to burst and release enzymes into the entire cell b. teh lysosome cannot break down asbestos with its digestive enzymes c. asbestos can increase your risk for lung cancer d. it causes impaired respiratory function e. all of the above

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Related questions

1. Asbestosis is a disease that results in damage to the lungsbecause (there may be more than one answer)

a. the asbestos gets broken down by the lysosomes

b. the asbestos gets broken down by the lysosomes

c. the lysosomes that absorb the asbestos release enzymes thatkill the lung tissue cells

d. the lung tissue becomes scarred and can nolonger function tobring oxygen into the blood

2. Which of the phases of cellular respiration breaks down theglucose molecule?

a. glycolysis

b. transition reaction

c. citric acid cycle

d. electron transport chain

3. Which of the following is NOT a function of the plasmamembrane?

a. allows all substances to enter the cell

b. helps bind cells to eachother so that they can form tissuesand organs

c. allows the cell to recognize other cells

d. allows cells to "talk" to eachother

4. Which of the following mechanisms of transport across thecell requires energy?

a. osmosis

b. endocytosis

c. facilitated diffusion

d. active transport

5. Which of the following organelles acts as the "powerhouse" ofthe cell, i.e. it produces the cell's energy.

a. nucleus

b. mitochondria

c. smooth endoplasmic reticulum

d. rough endoplasmic reticulum

6. Figure 3.9 in your textbook demonstrates what happens to ared blood cell when it is put into varying solutions. The bags inthe beakers represent a single red blood cell.

What happens to a red blood cell when it is put into ahypertonic solution?

a. stays the same and is fully functional

b. shrinks and no longer functions the way it's supposed to

c. gets larger and no longer functions the way it's supposedto

d. the shape stays the same but the red blood cell is no longerfunctional

7. Which of the following real-life situations would result inthe blood (note that this is referring to the liquid part of theblood, not the blood cells - the accurate name for this wouldactually be "blood plasma") becoming too hypotonic?

a. getting stranded in the middle of a dessert and becomingseverely dehydrated

b. drinking gatorade to replenish fluids during a basketballgame

c. drinking too much water so that your body can't get rid ofthe water quickly enough to maintain the appropriate blood plasmatonicity

d. being stranded in the middle of the ocean, drinking the saltyocean water

8. The golgi complex acts as the "UPS" of the cell - itprocesses and packages materials and sends them to theirdestinations.

True

False

9. The lysosome acts as the "stomach" of the cell; it digestsparticles that are no longer needed in the cell or have been takenup into the cell to be broken down.

True

False

10. We need oxygen to survive because oxygen is needed to breakdown glucose to form ATP. When we are deprived of oxygen, our cellssuddenly stop producing ATP and we can only survive for a fewminutes with whatever ATP remains in our cells.

True

False


61) How areantiangiogenic drugs used in the treatment of

cancer?


A) These drugsstop the replication of DNA so cancer cells

cannot reproduce.


B) These drugsstop the growth of blood vessels into the

tumor, so the cells "starve" to death.


C) These drugsstop metastasis.


D) These drugsstimulate the immune system.


E) These drugsstimulate the production of free radicals,

which kill cancer cells.



62) Which of the

following is true regarding photodynamic therapy?


A) It involves the use

of light sensitive drugs to target a cancer.


B) It uses magnets to

attract beads coated with a chemotherapeutic drug to acancer.


C) It is presently used

for the treatment of cancers of the breast and ovary.


D) It inhibits

angiogenesis.


E) It involves the use

of antibodies to deliver treatments to a cancer.



63) Which ofthe following types of cancer kills the highest

percentage of people diagnosed with the condition?


A)lung


B)breast


C)prostate


D)skin


E)colon



64) A mutationin which of the following genes can lead to

breast cancer?


A) BT05


B) HeLa


C) BRCA1


D)BCG


E)BCG2



65) If angiogenesis

were not to occur, a tumor would reach the size of a ________and stop growing.


A) period on a

typewritten page (.)


B) baseball


C) grapefruit


D) pea


E) basketball



66) Not onlydoes smoking cause lung cancer, it also doubles

the risk of which of the following types of cancer?


A)stomach


B)prostate


C)bladder



67) For women with a

mutated BRCA gene, the risk of breast cancer is about 60%.However, detection

of the mutated gene can occur before cancer ever develops by


A) testing of a blood

sample.


B) screening

mammography.


C) taking a biopsy of

breast tissue.


D) a PET scan.


E) urinalysis.



68) In some cases, why

doesn%u2019t the immune system recognize and destroy acancer?


A) Cancer cells that

produce abnormal antigens sometimes shed them.


B) Cancer cells have

less surface receptors needed for proper activation of Tcells.


C) Cancer cells have

enough %u201Cself%u201D surface markers as to be identified asnormal cells.


D) Cancer cells develop

from normal cells that cannot regulate cell division.


E) all of the above are

correct.



69) Theultimate goal of the male reproductive system is to


A) ensure thatsperm is produced at the correct time,

coinciding with ovulation.


B) releasesperm into the female's reproductive system.


C) join spermwith an egg, in an environment that favors

fertilization.


D) producelarge numbers of sperm.


E) maintain thehomeostatic condition of the male's body.



70) Synthesisof new sperm cells occurs in the


A) ductusdeferens.


B)urethra.


C) prostategland.


D) epididymis.


E) seminiferous tubules.



71) Externalgenitalia

of the male reproductive system include(s)


A) theejaculatory duct.


B) the urethraand scrotum.


C) the penisand scrotum.


D) thepenis.


E) the penis,urethra, and ejaculatory duct.



72) The releaseof LH in human males signals that


A) inhibin hasinhibited FHS secretion.


B) thehypothalamus has been stimulated to release inhibin.


C) spermproduction must be reduced.


D) the positivefeedback loop that regulates sperm production

is active.


E) blood levels of

testosterone are low

1) The stage of biofilm formation following attachment is

Select one:

a. invasion

b. colonization

c. development

d. penetration

2) Which of the following statements is not true about biofilms?

Select one:

a. It can cause disease to human.

b. It can be found on water-solid or water-air surfaces.

c. All of the above statements are correct.

d. Water and nutrients cannot enter the biofilms.

e. It can be composed of many different types of bacteria.

3) Bacteria in biofilms communicate through

Select one:

a. cilia

b. quorum sensing

c. DNA

d. lactose

e. none of the above

4) Which of following are good sources for obtaining a water sample to create biofilms in lab?

Select one or more:

a. aquarium

b. pond

c. lake

d. ditch

5) When using the pipette, after you place the sterile pipette tip in the broth culture you slowly release the plunger to draw up the desired volume into the tip.

Select one:

True

False

6) Motility test medium is a slant.

Select one:

True

False

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