Florida Science Grade 6

Section 1: Continuing Life

Continuing Life

1.
What is hereditary material made of?
A)cells
B)eggs
C)sperm
D)DNA
2.
The shape of DNA is like a __________.
A)triangle
B)flight of stairs
C)folded umbrella
D)twisted ladder
3.
The sequence of bases in a DNA molecule is similar to a(n) __________.
A)unknown puzzle
B)set of tools
C)code of instructions
D)communication network
4.
The division of a cell's nucleus into two identical nuclei is called __________.
A)sexual reproduction
B)fertilization
C)meiosis
D)mitosis
5.
Why might a cell use mitosis to divide?
A)to produce sex cells
B)to replace aging or injured cells
C)so fertilization can take place
D)to produce sperm
6.
Shoots growing from the eye of a potato are a form of __________.
A)sexual reproduction
B)fertilization
C)budding
D)asexual reproduction
7.
Which one of the following is an example of regeneration?
A)A new individual hydra grows from a hydra.
B)A human baby is born.
C)A chameleon grows a new tail.
D)Sperm and egg are produced.
8.
What process was used in 1997 to produce a sheep named Dolly?
A)sexual reproduction
B)budding
C)regeneration
D)cloning
9.
Because of __________ a human baby probably does not look exactly like either of its parents.
A)sexual reproduction
B)asexual reproduction
C)cloning
D)budding
10.
What type of cells are formed by meiosis?
A)body cells
B)sex cells
C)skin cells
D)liver cells
11.
How many chromosomes does a human body cell have?
A)23
B)46
C)43
D)63
12.
How can the DNA from two human parents combine?
A)meiosis
B)fertilization
C)mitosis
D)cloning
13.
In many plants, __________ are produced following fertilization.
A)flowers
B)seeds
C)petals
D)eggs
Glencoe Online Learning CenterScience HomeProduct InfoSite MapContact Us

The McGraw-Hill CompaniesGlencoe

Please read our Terms of Use and Privacy Policy before you explore our Web site. To report a technical problem with this Web site, please contact the Web Producer.