Science Bowl

BIOLOGY

Biology - 12

BIOL-91; Short Answer:  The Erythrocytes of mammals lack what? 

ANSWER:  nucleus  or  DNA  or  chromosomes  or  mitochondria 

BIOL-91; Multiple Choice:  The name of the ductless glands which secrete thei product into the
circulatory system are:

a)  exocrine

(pron: ek-seh-kren)

b)  apocrine

(pron: ap-eh-kren)

c)  holocrine

(pron: hoe-leh-kren)

d)  endocrine (pron: en-deh-kren)

ANSWER:   D -- ENDOcrine

BIOL-91; Multiple Choice:  In the first stage of photosynthesis, light energy splits water
molecules leaving a by-product which is released.  This byproduct is:

a)  hydrogen
b)  carbon dioxide
c)  oxygen
d)  methane

ANSWER:   C -- oxygen

BIOL-91; Multiple Choice:  The bacteria which cause dental cavities in humans break down
sugars, releasing what chemical, that causes tooth destruction? 

a)  acids
b)  bases
c)  enzymes
d)  monosaccharides

ANSWER:   A -- acids

BIOL-91; Multiple Choice:  Blood platelets are:

a)  cytoplasmic fragments
b)  free nuclei
c)  a kind of red cell
d)  found only during clot formation

ANSWER:   A -- Cytoplasmic fragments