Cell Reproduction: Warm Up 1
Welcome to the electronic frontier of the 21st century for science education. This is the first of three biology warm ups (bell ringers) for this topic of cellular reproduction. The cells of all living things grow and multiply through a cycle that's made up of six phases. If you stretched all the DNA in the nucleus of a cell. It would more than 20 miles. This warm up permits you an unlimited number of attempts to improve your test-taking and learning skills. As a Bonus, each attempts provides you with a new set of questions and random answers.
- 1.The DNA in eukaryotic cells wraps tightly around proteins called a(n)_____.
- A.
RNA
- B.
Nucleosome
- C.
Histones
- D.
DNA double helix
- 2.The cell cycle takes places over different periods of time in different types of cells. Brain cells may take several seconds to complete their cycle.
- A.
True
- B.
False
- 3.The two major periods of the cell cycle are _____ and the M phase known as the phase of _____ _____. (Please select two of the 5 answers for this question.)
- A.
Interphase
- B.
M phase
- C.
S Phase
- D.
G2 Phase
- E.
G1 Phase
- 4.
What is the name of this portion of DNA molecule wrapped around a protein structure?- A.
Chromosome
- B.
Histone
- C.
DNA helix molecule
- D.
Chromatin
- 5.
What is the point of attachment between the two chromatids called? (Please enter your answers using all lower case letters.)
- 6.Animal and human chromosomes are categorized as either _____ chromosomes or _____.
- A.
Autosomes and Histones
- B.
Sex chromosomes and Autosomes
- C.
Sex chromosomes and bipolar chromosomes
- D.
Sex and Homologous chromosomes
- 7.
The number of diploid chromosomes in an organisms nucleus indicates whether it is an animal or plant. (Adders Tongue fern as shown in the image)
- A.
True
- B.
False
- 8.Every cell of an organism produced by sexual reproduction has two copies of each autosome. The parent donates one copy of each autosome to the offspring. These are called a(n)_____chromosomes.
- A.
Autosome
- B.
Sex
- C.
Homologous
- D.
Histone
- E.
Haploid
- 9.It is noted egg and sperm cells are _____ cells, which contain only one set of chromosomes. (Please enter your answer in all lower case letters.)
- 10.
How many diploid number of chromosomes are found in the orangtun?
- A.
23
- B.
28
- C.
46
- D.
48
- 11.
A(n)_____ is a photomicrograph of special stained chromosomes arranged as pairs and in order of size.
- A.
Karyogamy
- B.
Karyotype
- C.
Kinesin
- D.
Keystone chrosomes
- E.
Keratinization
- 12.
A kilobase (kb) is an abbreviation for _____ DNA base pairs.
- A.
10
- B.
100
- C.
1,000
- D.
1,000,000
- 13.Cells having two sets of chromosomes are called _____? (Please enter your answer in all lower case letters.)
- 14.Any eukaryotic chromosome not involved in the sex determination of an organism is called a(n)_____.
- A.
Autosome
- B.
Autotomy
- C.
Haploid
- D.
Diploid
- E.
Asexual
- 15.The chromosome pair that determines the sexual characteristics of an individual in species that exhibit sexual differentiation are called _____ chromosomes.
- A.
Autosomes
- B.
Serial
- C.
Haploid
- D.
Sex
- E.
Sessile
- 16.[XX] are sex chromosomes that determine sexual characteristics in most animals and some higher plants.
- A.
True
- B.
False
- 17.[XY] are called heterogametic individuals which are males.
- A.
True
- B.
False
- 18.[XX] are called _____ individuals which are females.
- A.
Heterogametic
- B.
Homogametic
- C.
Diplogametic
- D.
Haplogametic
- E.
Pologametic
- 19.
In birds, butterflies, and some fish (clown fish), where females are the heterogametic sex, their chromosomes are named as _____ and _____.
- A.
X ; Y
- B.
B ; X
- C.
Z ; W
- D.
W ; Y
- 20.
In some fish, amphibians, and insects, the sex of the individual is determined by the number of X chromosomes in relation to the number of autosomes (non-sex chromosomes).
- A.
True
- B.
False
.jpg "A(n)_____ is a photomicrograph of special stained chromosomes arranged as pairs and in order of size.")
.jpg "A kilobase (kb) is an abbreviation for _____ DNA base pairs.")
.jpg "In some fish, amphibians, and insects, the sex of the individual is determined by the number of X chromosomes in relation to the number of autosomes (non-sex chromosomes).")
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