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WorksheetsBJU Life Science Ch. 3 Test
Total questions: 45
Worksheet time: 11hrs 15mins
The shape of a DNA molcule was first described to be a ______.
double helix
loop-de-loop
spiral shell
trapeze swing
The shape of a DNA molecule can also be described as a _____.
Loop-de-loop
sea star
trapeze swing
twisted ladder
The smaller units that make up DNA that consist of a sugar, phosphate and a base are called a ______.
amino acids
deoxyriboses
nucleotides
proteins
Which of the following is NOT part of a nucleotide?
a base
a gene
a phosphate
a sugar
In a DNA molecule, Adenine (A) always pairs with _____.
Cytocine (C)
Guanine (G)
Thymine (T)
Uracil (U)
Which of the following determine (s) the protein that is built from a gene?
the nucleotides that are there
the order of the nucleotides
BOTH
NEITHER
Which RNA is produced during TRANSCRIPTION?
messenger (mRNA)
protein RNA (pRNA)
ribosome RNA (rRNA)
transfer RNA (tRNA)
RNA uses ______ instead of Thymine (T).
Adenine (A)
Cytosine (C)
Guanine (G)
Uracil (U)
Which of the following is NOT a stage name of the cell cycle?
cytokinesis
interphase
mitosis
replication
What is the FIRST STEP in replication (copying of DNA)?
Enzyme unzips DNA into 2 strands
Ribosome reads the mRNA
mRNA leaves the nucleus
DNA coils up into chromosomes
What is the end result of mitosis?
the cell divides to make gametes
the cell makes copies of DNA
the cell makes proteins
the cell divides to make 2 identical daughter cells
Matching pairs of chromosomes in a diploid (2n) cell are called _______.
cousin chromatins
daughter chromosomes
homologous chromosomes
sister chromatids
Each nucleotide is made-up of three parts: a sugar, phosphate and a base.
True
False
Changing the order of the nucleotides in DNA leaves the protein that is built the same.
True
False
In RNA, uracil (U) always pairs with adenine (A).
True
False
Ribosome RNA (rRNA) is responsible for carrying amino acids (AA) to the ribsome.
True
False
The processes of transcription and translation are so complex and work together that they point to a designer or a God that planned it all out.
True
False
Cells need a copy of their DNA before mitosis happens so that each new cell has its own set of DNA.
True
False
Cells spend most of their lives doing mitosis.
True
False
Zygotes combine to make gametes.
True
False
The structure of DNA is evidence for a powerful Creator.
True
False
Which part of mitosis is when the cytoplasm and membrane split into 2 cells?
anaphase
cytokinesis
interphase
metaphase
What stage of mitosis is when the chromosomes line up in the MIDDLE of the cell?
anaphase
interphase
metaphase
prophase
What stage of mitosis happens when the nuclear membrane disappears, the chromosomes are made and the spindle fibers appear?
anaphase
interphase
telophase
prophase
What stage of mitosis happens when the sister chromatids are pulled AWAY from each other/
anaphase
interphase
telophase
metaphase
What part of the cell cycle does the cell copy its DNA and do normal functions?
anaphase
interphase
mitosis
cytokinesis
Which stage of mitosis happens when the chromosomes start uncoiling and there are 2 nuclei forming?
anaphase
metaphase
telophase
interphase
There are _______ different kinds of BASES found in DNA.
1
2
3
4
A group of 3 nucleotides forms a _______ or the code/words of DNA and RNA molecules.
codon
base
sugar
Female gametes are called _______.
egg
sperm
pollen
None
Male gametes are called ________.
eggs
ovum
sperm
none
When gametes combine, they form a diploid cell called a _____.
egg
sperm
zygote
cell
Name the 4 bases found in DNA.
(a)
Name 2 ways RNA is different than DNA.
(a)
Put the following in the correct ORDER for transciption:
a. the mRNA leaves the nucleus
b. an enzyme unzips part of the DNA molecule
c. an enzyme adds the matching nucleotides to make the mRNA
d. an enzyme reads the order of the nucleotides found in the DNA
A, B, C, D
A,C,D, B
D, B, A, C
B, D, C, A
Name this phase of mitosis.
(a)
Name this phase of mitosis.
(a)
Name this phase of mitosis.
(a)
Name this phase of mitosis.
(a)
Name this phase of mitosis.
(a)
What is the purpose of mitosis?
to make gametes
to replace damaged cells and for growth
Neither
What is the purpose of meiosis?
to make gametes
to repair damaged cells and for growth
Neither
What is the process going on in the picture?
transcription
mitosis
meiosis
translation
In meiosis, how would you describe the daugher cells?
2 identical to the parent cell
2 genetically different from the parent cell
4 identical to the parent cell
4 genetically different from the parent cell
Which phase of meiosis is pictured?
prophase
anaphase
metaphase 1
metaphase 2
