BIOL108 Lecture Notes - Lecture 13: Dna Replication, Asexual Reproduction, Nuclear Dna

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3 Aug 2018

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29th march 2018: lecture 15 mitosis and meiosis: reproduction: Requires replicating the dna for making an organism: mitosis and meiosis: Asexual reproduction of body cell all cells produced. Generation of gametes for sexual reproduction all cells are different, and result in diverse offspring are identical: structure of dna and chromosomes: The rungs of the double helix are base pairs (a-t) and (g-c) pairs: chromosomes: Consists of one single long molecule of double stranded dna. Chromosomes come in pairs (1 from mother and 1 from father) 46 dna molecules in each of their cells. 23 pairs of chromosomes: cell division: Firstly, there is a growth period (g1) in which organelles begin to double in number. The nuclear dna then replicates (s phase), followed by a second growth phase (g2) Mitosis occurs, resulting in two cells with identical dna: control of cell division:

Related Questions

Some cancer drugs such as vinblastine function by preventingformation of the mitotic spindle. The outcome is to_____________________________ of(in) cancerous cells.
A) prevent chromosomes coiling ready for duplication
B) reinstate the stop/start controls in the cell cycle
C) prevent chromosomes from producing chromatids
D) prevent homologous chromosomes lining up on the metaphaseplate
2. Most of the cell cycle is spent in ________________ during whichtime the cell grows and performs normal functions.
A) interphase
B) S phase
C) G2 phase
D) M (mitotic) phase
3. When an organism is described as âhaploidâ this infers that itscells
A) each contain one set of chromosomes
B) each contain half a chromosome
C) each contain two sets of chromosomes
D) each contain an âYâ chromosome
4. During _________________ of meiosis chromatids of homologouschromosomes exchange genetic material.
A) prophase II
B) anaphase I
C) prophase I
D) anaphase II
5. In a cell containing 20 chromosomes the process of meiosis willresult in ___ chromosomes in each cell.
A) 10
B) 20
C) 40
D) 30
6. Some fungi cells complete mitosis however they do not completecytokinesis. This would result in
A) large nuclei containing many chromatids
B) large cells containing lots of nuclei
C) many cells each containing one nucleus
D) daughter cells identical to the original cell
7. Which of the following statements best describes a karyotype? Apicture showing
A) most pairs of homologous chromosomes including sex chromosomestaken from a skin cell
B) pairs of homologous chromosomes taken from a sperm cell
C) all pairs of homologous chromosomes taken from a skin cell
D) pairs of homologous chromosomes taken from an egg cell
8. Which one of the following occurs during mitosis?
A) Chromosomes are duplicated
B) The cell grows
C) Organelles such as mitochondria are duplicated
D) Chromatids separate
9. The function of meiosis is to generate cells
A) that are identical to the original cell
B) to be used for asexual reproduction
C) to be used in sexual reproduction
D) to be used for tissue repair
10. The general body cells of a Koala bear contain 16 chromosomes.Completion of one cell cycle will result in ______ cell(s) (each)with _____ chromosomes.
A) one; 16
B) two; 32
C) two; 32
D) two; 16

blushsnail26

Question 1

The process by which RNA is synthesized using DNA as a template is â¦

Select one:

a. replication

b. transcription

c. translation

d. inspiration

Question 2

Which of the following occurs during meiosis but not mitosis?

Select one:

a. DNA condenses into chromosomes

b. nuclear envelop disappears

c. homologous chromosomes separate

d. sister chromatids separate

Question 3

Which part of the animal life cycle is haploid?

Select one:

a. gamete

b. zygote

c. sporophyte

d. spore

Question 4

Single celled eukaryotic organisms are â¦

Select one:

a. viruses

b. bacterial

c. archaea

d. protists

Question 5

Which type of cellular division results in the formation of diploid cells from a diploid parent cell?

Select one:

a. mitosis

b. meiosis

c. interphase

d. A and B but not C

e. all of the above

Question 6

A sequence of DNA that codes for a single protein is a â¦

Select one:

a. gene

b. ribosome

c. mRNA

d. none of the above

Question 7

Which of the following is characteristic of animals?

Select one:

a. heterotrophic

b. sexual reproduction

c. embryonic development

d. all of the above

Question 8

All genes have only two possible alleles.

Select one:

True

False

Question 9

The presence of membrane-bound organelles is characteristic of â¦

Select one:

a. prokaryotes

b. viruses

c. bacteria

d. eukaryotes

Question 10

What are the building blocks of proteins?

Select one:

a. fatty acids

b. amino acids

c. nucleic acids

d. all of the above

Question 11

During which phase of the cell cycle does DNA replication occur?

Select one:

a. Mitosis

b. Interphase

c. Meiosis

d. Replicosis

Question 12

Which of the following characteristic is shared among fungi and animals?

Select one:

a. autotrophic

b. heterotrophic

c. cell walls

d. absorb nutrients

Question 13

A error in DNA replication that goes unrepaired is a â¦

Select one:

a. chromosome

b. chromatid

c. mutation

d. none of the above

Question 14

Alternate forms of a gene are called ________.

Select one:

a. chromatids

b. chromosomes

c. ribosomal subunits

d. alleles

Question 15

The physical expression of a genotype is the phenotype.

Select one:

True

False

Question 16

In complete dominance, a heterozygous genotype results in â¦

Select one:

a. a recessive phenotype

b. a dominant phenotype

c. a third and unique phenotype

d. none of the above

Question 17

Which theory explains the evolution of eukaryotes from prokaryotes?

Select one:

a. phagocytosis

b. endosymbiosis

c. pinocytosis

d. none of the above

Question 18

Which scientist experimented with plants to describe patterns of inheritance?

Select one:

a. Mendel

b. Chase

c. Einstein

d. Watson

Question 19

Which cellular organelle contains aerobic cellular respiration?

Select one:

a. chloroplasts

b. mitochondria

c. nucleus

d. lysosome

Question 20

Which of the following statements is false?

Select one:

a. Haploid gametes are formed by meiosis

b. Mitosis forms genetically identical daughter cells

c. Mitosis results in the formation of four daughter cells from a single parent cell

d. Mitosis forms diploid daughter cells from a diploid parent cell

Question 21

The first forms of life on Earth were ________.

Select one:

a. plants

b. microorganisms

c. birds

d. dinosaurs

Question 22

Which of the following is used to separate chromosomes during nuclear division?

Select one:

a. cytoskeleton

b. microtubules

c. actin and myosin

d. amoeboid movement

e. all of the above

Question 23

Which generation is most dominant in more primitive plants?

Select one:

a. bryophyte

b. sporophyte

c. gametophyte

d. androphyte

Question 24

Which of the following is characteristic of plants?

Select one:

a. autotrophic

b. contain chloroplasts

c. multicellular

d. all of the above

Question 25

During which phase of mitosis do chromosome line up along the middle of the cell?

Select one:

a. prophase

b. metaphase

c. anaphase

d. telophase

Question 26

During which phase of mitosis does DNA condense into distinct chromosomes?

Select one:

a. prophase

b. metaphase

c. anaphase

d. telophase

Question 27

The process by which DNA is used as a template to make new DNA is â¦

Select one:

a. translation

b. replication

c. transcription

d. allocation

Question 28

Which of the following is characteristic of plant but not animal cells?

Select one:

a. chloroplasts

b. water vacuole

c. cell wall

d. all of the above

Question 29

Which meiotic division is most like mitosis?

Select one:

a. Meiosis I

b. Meiosis II

c. Meiosis III

d. Meiosis IV

Question 30

Which enzyme catalyzes replication?

Select one:

a. DNA polymerase

b. RNA polymerase

c. Ribosome

d. all of the above

Question 11 options:

A condition characterized by the growth of endometrial cells in areas other than the endometrium is called

Question 12

A standard screening test for cervical cancer is called

Question 13

The period of prenatal development in which the basic parts of the organ systems are formed is the

Question 14 options:

Detection of

Spell check is used by pregnancy test kits to detect the early stages of pregnancy.

Question 15

The actual gene sequence governing the expression of a trait is called a

Spell check , whereas the physical expression of this trait is the PHENOTYPE , which can also be defined as the physical expression of a gene.

Question 16

Down syndrome is a disorder where a person has an chromosome 21.

Question

A picture of all chromosomes taken in metaphase and used for analysis is called a

Question 18

A pregnancy where the fertilized egg implants in an area other than the uterus is called

Question

The basic building blocks of DNA are called

Question 20

Monosomy of the X chromosome characterized by a short stocky neck, underdeveloped secondary sexual characteristics, and infertility is called

syndrome.

Question 21

A deletion of the short arm of chromosome 5 with a typical cry that resembles a meowing cat characterize

Question 22

A serious psychological disorder characterized by the fear of becoming obese is called

Question 23

Diffusion of gases between capillary beds and tissues is called respiration.

Question 24

The destruction of alveoli by irritants such as cigarette smoke and agricultural dust is found in a disorder called

Question 25

Of the three types of skin cancer which are the most likely to metastasize

Question 25 options:

Melanoma

Squamous cell carcinoma

Basal cell carcinoma

All of the above have equal ability to metastasize

Question 26

Cancer of this organ/gland causes the most deaths annually

Question 26 options:

Lung

Breast

Prostate

Bladder

Question 27

The correct order of stages of the cell cycle that a new cell will go through immediately after being produced by mitosis is

Question 27 options:

S, G1, G2, M

G1, G2, M, S

G1, S, G2, M

M, G1, S, G2

Question 28

What is the purpose of DNA replication

Question 28 options:

To copy the information in a gene so that extra protein synthesis can be done

To make an RNA copy of the gene

To provide the cell with extra DNA in case the original gets damaged

To ensure that two cells produced by mitosis have the same genetic information as the parent cell

Question 29

Which of the following is not a function and/or advantage of mitosis

Question 29 options:

It can repair damaged tissue

Growth takes place through mitosis

It can replace old or damaged cells

All of the above are functions and/or advantages

Question 30

Which stage of the cell cycle occurs just after mitosis

Question 30 options:

Prophase

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Question 31 (1.5 points) Question 31 Unsaved

DNA replication is completed by the end of

Question 31 options:

Prophase

S phase

Question 32

Which of the following is NOT true of DNA

Question 32 options:

Generally double stranded

Stores the cell genetic information

Replicated by DNA polymerase

Contains A, C, U, and G

Question 33

These cell may enter G0 of the cell cycle permanently

Question 33 options:

Hepatocytes

Transformed cells

Neurons

Cells in the digestive system

Question 34

When a primary spermatocyte, goes through meiosis, how many mature sperm will be produced

Question 34 options:

Question 35

When a primary oocyte goes through meiosis, how many mature eggs will be produced

Question 35 options:

BIOL108 Lecture Notes - Lecture 13: Dna Replication, Asexual Reproduction, Nuclear Dna

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