8th Grade Science Test Review

25 Questions  I  By Monicada
Please take the quiz to rate it.

8th Grade Science Test Review
This is a practice test designed to help you with your test on Tuesday.

  
Changes are done, please start the quiz.


Questions and Answers Excerpt

Removing question excerpt is a premium feature

Upgrade and get a lot more done!
1.  Identify the  following: Dd
A.
B.
C.
D.
2.  Identify the following: rr
A.
B.
C.
D.
3.  Erwin Chargaff's base pairing rule state that ___________ has an equal proportion to ___________, and ____________ to _____________.
A.
B.
C.
4. 
In rabbits, grey hair is dominant to white hair.  Also in rabbits, black eyes are dominant to red eyes. These letters represent the genotypes of the rabbits:
GG = gray hair Gg = gray hair gg = white hair BB = black eyes Bb = black eyes bb = red eyes
 A male rabbit with the genotype GGbb is crossed with a female rabbit with the genotype ggBb The square is set up below. Fill it out and determine the phenotypes and proportions in the offspring.
Question: How many out of 16 have grey fur and black eyes? ________
5.  Different forms of a characteristic.
6.  The combination of inherited alleles together form an organism’s .
7.  The outer boundary of the cell designed to regulate what comes and out of the cell.
A.
B.
C.
8.  An organelle enclosed in a membrane that contains DNA.
A.
B.
C.
D.
9.  An organism’s appearance is known as its
10. 
Rr x rr R= Round r= wrinkled What percentage of the offspring will be round? ___________
A.
B.
C.
D.
11.  Used to organize all the possible genotype combinations of offspring from particular parents.
A.
B.
C.
12.  A homozygous round seeded plant is crossed with a homozygous wrinkled seeded plant. What are the genotypes of the parents? R= Round r=wrinkled
13. 
This is an image of a _________________.
A.
B.
C.
D.
14.  DNA is made of subunits called
15.  The passing of traits from parents to offspring.
A.
B.
C.
D.
16.  A trait or allele expressed only when two recessive alleles for the same characteristic are inherited.
17.  A cross of two traits.
A.
B.
C.
18. 
GG = gray hair Gg = gray hair gg = white hair BB = black eyes Bb = black eyes bb = red eyes
 A male rabbit with the genotype GGbb is crossed with a female rabbit with the genotype ggBb Question: How many out of 16 have white fur and black eyes? ________
19.  Scientist which contributed to the discovery of the DNA structure were: James Watson, Francis Crick, and Rosalind Franklin.
A.
B.
20.  A genetic disorder caused from an added chromosome to chromosome 21.
A.
B.
C.
21.  A feature that has different forms in a population.
22.  A nucleotide is composed of
A.
B.
C.
D.
23.  The genetic material that determines inherited characteristics.
A.
B.
C.
D.
24.  The instructions for an inherited trait.
A.
B.
C.
D.
25.  The different forms of a gene.
A.
B.
C.
D.
Back to top

Removing ad is a premium feature

Upgrade and get a lot more done!
Take Another Quiz
We have sent an email with your new password.