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Details

Chapter 4 worksheet
worksheet
20
Science
7th Grade
10/06/2011

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Cards

Term
Many cells in your body grow and divide every day by what process?
Definition
mitosis
Term
What structure in a cell's nucleus holds the heriditary information?
Definition
chromosomes
Term
Term for the joining of an egg and sperm
Definition
fertilization
Term
The sections of DNA that contain instructions for producing specific proteins
Definition
genes
Term
What are male sex cells called?
Definition
sperm
Term
What cell forms when an egg and sperm join?
Definition
zygote
Term
The term for any permanent change in a gene or chromosome
Definition
mutation
Term
The type of reproduction that produces a new organism; with identical chromosomes to those of the parent organism
Definition
meiosis
Term
An organism grows and functions by followin the information in this code
Definition
DNA
Term
The term for female sex cells
Definition
eggs
Term
Cells with pairs of chromosomes are this
Definition
diploid
Term
Type of reproduction that requires the joining of two sex cells
Definition
sexual
Term
This type of nucleic acid carries the information needed to make proteins
Definition
RNA
Term
Cells that do not have pairs of chromosomes (sex cells)
Definition
haploid
Term
DNA bases/strand:

T:
G:
A:
T:
C:
Definition
A
C
T
A
G
Term
RNA bases/strand:

A:
C:
T:
G:
A:
Definition
U
G
A
C
U
Term
What structiure contains the instructions for making specific protein?
Definition
genes
Term
What makes up the sides of the "ladder" of a DNA molecule?
Definition
deoxyribose sugar and phosphase
Term
How is RNA differend from DNA?
Definition
single stranded vs. double helix
uracil vs. thymine
Term
What can cause mutations?
Definition
X ras, sunlight, and chemicals
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