STAAR Practice
8th Grade
•25 Qs
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STAAR Practice
Quiz
•
Science
•
8th Grade
•
Hard
+7
Standards-aligned
Lisa Thompson
FREE Resource
25 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Each strand of a DNA molecule contains nitrogenous bases that pair with other nitrogenous bases in very specific ways. A diagram of a section of DNA is shown.
Which DNA strand is complementary to the one shown above?
F
G
H
J
2.
MULTIPLE CHOICE QUESTION
1 min • 5 pts
How is information for a specific protein carried on the DNA molecule?
As a sequence of nucleotides
In the double-helix shape of the condensed chromosome
In the ratio of adenines to thymines
As a pattern of phosphates and sugars
Tags
6A
3.
MULTIPLE CHOICE QUESTION
1 min • 5 pts
41 A student builds a model of a DNA strand.
Which of these models of a DNA strand shows bases that are complementary to the ones on the student’s DNA model?
Tags
6A
4.
MULTIPLE CHOICE QUESTION
1 min • 5 pts
Which statement describes this model of DNA?
The model is inaccurate because the base pairs are incorrect.
The model is accurate because it contains correctly paired bases.
The model is accurate because it shows each base splitting to form a double helix.
The model is inaccurate because some typical bases in DNA are missing.
Tags
NGSS.HS-LS1-1
5.
MULTIPLE CHOICE QUESTION
1 min • 5 pts
Which part of a DNA molecule is responsible for the direct coding of specific traits in an organism?
The number of hydrogen bonds that hold the strands of DNA together.
The number of carbons in the DNA molecule.
The sequence of nucleotide bases in the DNA molecule.
The sequences of phosphates along each DNA strand.
Tags
6A
6.
MULTIPLE CHOICE QUESTION
1 min • 5 pts
Nucleotides are made up of a sugar, phosphate, and..?
nitrogenous base
nucleic acid
cholesterol
fatty acid
Tags
NGSS.HS-LS1-1
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which characteristics of PROTONS correctly complete the chart?
Neutral/ Nucleus/ 1
Positive/ Nucleus/ 1
Negative/ Electron Cloud/ 0.0005
Tags
NGSS.MS-PS1-1
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