Essay About Principal Parts Of The Cell And Cell Death

A&p Quiz Abc
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HEATHER TOUPS
A/P I T&R
10TH EDITION TEXT
SELF QUIZ CHAPTER 3
Fill in the blanks in the following statements.
1. The three principal parts of the cell are the plasma membrane, cytoplasm and nucleus
2. Apoptosis refers to programmed cell death, whereas necrosis refers to cell
death resulting from tissue injury.
3. The fluid portion of the cytoplasm is the cytosol
4. List three causes of cellular aging. 1)shortening and loss of protective polemeres on chromosomes,
2)cross-link formation between glucose and protein, 3)free radical formation
Indicate whether the following statements are true or false.
5. Duplicated chromosomes held together by centromes are called chromatids True
6. The sodium pump is an example of primary active transport True
Choose the one best answer to the following questions.
7. The basic structural unit of the plasma membrane is the
(a) lipid bilayer
(b) integral protein
(c) cholesterol molecule
(d) peripheral protein
(e) glycoprotein-glycolipid complex
8. Integral proteins can function in the cell membrane in all the following ways except
(a) as a channel
(b) as a transporter
(c) as a receptor
(d) as an exocytosis vesicle
(e) as a cell-identity marker
9. Which of the following factors influence the diffusion rate of substances though a plasma membrane?
(1) concentration gradient
(2) diffusion distance
(3) surface area
(4) size of diffusing substance
(5) temperature
(a) 1, 2, 3, and 5
(b) 1, 2, 3, 4, and 5
(c) 2, 3, 4, and 5
(d) 1, 2, and 5
(e) 2, 3, and 5
10. A cell would loose water volume and shrink if placed in
(a) a hypertonic solution
(b) a hypotonic solution
(c) an isotonic solution
(d) a hydrophobic solution
(e) an ionic solution
11. Which of the following statements regarding the nucleus are true?
(1) Nucleoli within the nucleus are the sites of ribosome synthesis
(2) Most of the cells hereditary units, called genes are located within the nucleus
(3) The nuclear membrane is a solid, impermeable membrane
(4) Protein synthesis occurs within the nucleus
(5) In non dividing cells, DNA is found in the nucleus in the form of chromatin
(a) 1, 2, and 3
(b) 1, 2, and 4
(c) 1, 2, and 5
(d) 2, 4, and 5
(e) 2, 3, and 4
12. Match the following:
__2__ (a) mitosos
(1) cytoplasmic division
__3__ (b) meiosis
(2) somatic cell division resulting in identical daughter cells
__5__ (c) prophase
(3) reproductive cell division that reduces the number of __7__ (d) metaphase
chromosomes by half
__6__ (e) anaphase
(4) stage of cell division when replication of DNA occurs
__8__ (f) telophase
(5) stage when chromatin fibers condense and shorten to form
__1__ (g)cytokinesis
chromosomes
__4__ (h)interphase
(6) stage when centromeres split and sister chromatids move to
opposite poles of the cell
(7) stage when centromeres of chromotid pairs line up at the
center of the mitotic spindle
(8) stage when chromosomes uncoil and revert to chromatin
13. Match the following:
__11_ (a) codon
(1) DNA region that does not code for synthesis of a part of a
__10_ (b) RNA polymerase
protein
__1__ (c) intron
(2) DNA region that codes for synthesis of a part of a protein
__2__ (d) exon
(3) enzyme that removes all introns and joins remaining exons
__5__ (e) transcription
(4) nucleotide sequence, located near the beginning of a gene,
__9__ (f) translation
that indicates where transcription begins; RNA polymerase
__12_ (g) messenger RNA
attachment site
__7__ (h) transfer RNA
(5) the coping of the DNA message onto messenger RNA
__6__ (i) ribosomal RNA
(6) joins with ribosomal proteins to make ribosomes
__3__