CBIO 2200 Lecture 2: Lab prep 2

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crimsontermite136

22 Aug 2016

School

University of Georgia

Department

Cellular Biology

Course

CBIO 2200

Professor

Massey

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Document Summary

Definitions: tissues - groups of cells that are similar in structure and perform a common !function , histology - the study of tissues and how they are arranged into organs ! 4 primary tissues: connective tissue, muscle tissue, nervous tissue. Simple squamous: air sacs of lungs, lining blood vessels. Simple cuboidal: form many major glands and glandular organs, major cell type of. Secretion of fluids or hormones (sweat, oil), re-absorption kidney and pancreas (kidneys) Simple columnar: inner portion of digestive tract, uterine tubes, often associate with. Provides absorptive areas on inner portions of the. Goblet cells secrete mucin: surface of skin, lining mouth, throat, esophagus, rectum, anus, and vagina, provides physical protection against abrasions, pathogens and chemical attack. Transitional: urinary bladder, renal pelvis, and ureters, permits expansion and recoil after stretching. Pseudostratified columnar : lining of the respiratory tract and portions of the male reproductive tract, protection and secretion, have cilia.

Related Questions

3. Explain how the internal structure of a cell isolated from the pancreas differs from that of a muscle cell.,

Compare the structures of animal and plant cells. How are they different? how are they the same?

Edema is a medical condition that results from fluid leaking out of blood vessels into surrounding tissues. using your knowledge of animal cell junctions, hypothesize what type of junction may be malfunctioning in individuals suffering from edema and explain why you believe your hypothesis to be correct.

whitewhale462

1. The anatomic position refers to the position in which a person is standing upright facing the observer, feet parallel and flat on the floor, and palms facing forward.

True

False

2. The study of how gases are transferred between the lungs and blood, and between the blood and body tissues, best describes the focus of

cardiovascular physiology.

respiratory physiology.

nervous system anatomy.

reproductive anatomy.

3. Which level of organization in the human body involves two or more tissue types working together to perform specific, complex functions?

Tissue level

Cellular level

Organismal level

Organ level

4. A patient complaining of pain on his left side just deep to the ribs would be referring to which abdominopelvic quadrant?

Left upper

Right upper

Right lower

Left lower

5. Homeostasis is BEST described as

a process in which the external environment has no influence on the internal environment.

the changes in the internal environment which have no influence on health.

the maintenance of a stable internal environment despite a changing external environment.

the prevention of changes internally despite external changes.

ochrepanda878

QUESTION 1

Which of the following statements regarding splicing is FALSE?

A) The length of introns determines the efficiency of splicing.

B) Many human neurological disorders are caused by splicing errors and/or mutations in splicing factors.

C) Splicing requires the action of a variety of snRNAs that direct the transesterification reactions.

D) Splicing is dictated by sequence features in pre-mRNA transcripts

QUESTION 2

Which of the following mRNA processing factors does NOT associate with the CTD of RNA polymerase II?

A) splicing factors

B) polyadenylation factors

C) miRNAs/siRNAs

D) capping proteins

QUESTION 3

Which of the following statements about mRNA stability is FALSE?

A) Deadenylation-independent mRNA decay is exclusively in the 5' to 3' direction.

B) The most common pathway of mRNA decay is deadenylation-dependent.

C) Yeast mRNA decay occurs primarily in the 5' to 3' direction, while 3' to 5' decay is more common in mammalian cells.

D) Decapping enzymes are required for all pathways of mRNA decay.

QUESTION 4

You obtain the sequence of a gene containing 10 exons, 9 introns, and a 3â² UTR containing a polyadenylation consensus sequence. The fifth exon also contains a polyadenylation site. To test whether both polyadenylation sites are used, you isolate mRNA and find a longer transcript from muscle tissue and a shorter transcript from all other tissues. Which of the following is the most likely mechanism underlying these alternative transcripts?

A) The fifth exon is spliced out of the mature mRNA transcript in muscle cells.

B) Muscle cells have less effective polyadenylation than other tissues.

C) An alternative CPSF protein is expressed in muscle cells with lower affinity for the polyadenylation sequence in exon 5.

D) The mRNA in muscle cells is edited to eliminate the polyadenylation sequence in exon 5.

blushdonkey474

CBIO 2200 Lecture 2: Lab prep 2

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