What does a typical animal cell look like?

What does a typical animal cell look like? 
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1 Answer

Answer :

There is no such thing as a typical animal cell, since cells vary in overall size, shape, and contents of the various subcellular organelles. 
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Related questions

What is the general nature of cells?

Description : What is the general nature of cells?

Last Answer : All animals, plants, and microorganisms are composed of cells. Cells range in volume from a few attoliters among bacteria to milliliters for the giant nerve cells of squid; typical cells ... are distinguished not only by their different structures but also by their different metabolic activities. 

What type of experiments can we carry out that might shed light on the origin of life?

Description : What type of experiments can we carry out that might shed light on the origin of life?

Last Answer : A landmark experiment that was designed to provide some answers to this question was conducted by Stanley Miller and Harold Urey, working at the University of Chicago (see Fig. 1-1) ... building blocks are known to arise under very plausible and readily reproduced physical and chemical conditions 

How may cells be disrupted in order to obtain subcellular organelles by centrifugal fractionation?

Description : How may cells be disrupted in order to obtain subcellular organelles by centrifugal fractionation?

Last Answer : There are several ways of disrupting cells: 1. Osmotic lysis. The plasma membranes of cells are water-permeable but are impermeable to large molecules and some ions. Thus if cells are placed ... cause microcavitation in the sample, and this disrupts the cell membranes, usually in a few seconds.

A person’s lysosomes lack the enzyme β-glucosidase ?

Description : There is an inherited disease in which a person’s lysosomes lack the enzyme β-glucosidase What are the clinical and biochemical consequences of this deficiency?

Last Answer : The disease is called Gaucher disease, and it is the most common of the sphingolipidoses; its incidence in the general population is ∼1:2500. This class of disease results from defective hydrolysis of ... may show signs of mental deterioration if much of the lipid accumulates in the brain as well. 

How many red blood cells are there in an average 70- kg person?

Description : How many red blood cells are there in an average 70- kg person?

Last Answer : There are ∼2.6 × 1013, or 26 trillion. The total blood volume is ∼5.5 L, and ~40% of that is red blood cells;i.e., there are ~2.2 L of red cells. Since each cell has a volume of ∼86 × 10−15 L , the result follows from dividing 2.2 L by this number. 

How many red blood cells are produced in an average 70-kg person every second?

Description : How many red blood cells are produced in an average 70-kg person every second?

Last Answer : The number is 2.5 million! The average life span of a human red cell is 120 days; therefore the number produced per second is simply given by the 26 trillion (average cells in 70kg person), divided by 120 days and expressed in seconds. 

PAS staining of microscope sections of red blood cells gives ?

Description : PAS staining of microscope sections of red blood cells gives a pink stain on only one side of the cell membrane. Which side is it, the extracellular or the intracellular side? 

Last Answer : Extracellular. All glycoprotein and glycolipids of the plasma membrane of red and all other cells are on theoutside of the cell. No oligosaccharides are present on the inner face of the cell membrane. 

What is the biochemical basis of this test?

Description : A commonly used test of the viability of cells in tissue culture is whether or not they exclude a supravital dye such as toluidine blue. If the cells exclude the dye, they are considered to be viable. What is the biochemical basis of this test? 

Last Answer : The membranes of all living cells are selectively permeable to ions and other chemical species. This selectivity is in many cases linked to the supply of ATP, and one feature of cell death is a low ... of ATP. In this state, the cell no longer excludes foreign compounds, such as toluidine dye. 

Microsomes - From where do they arise?

Description : Microsomes are small spherical membranous vesicles with attached ribosomes. They sediment, during differential sedimentation, only in the late stages of a preparation when very high centrifugal velocities are used. They don’t appear in electronmicrographs of a cell. From where do they arise?

Last Answer : Fragments of endoplasmic reticulum are transformed from lipid bilayer sheets, with attached ribosomes, into spherical vesicles. This is a result of the homogenization used in preparing the samples and also the tendency of lipid bilayers to spontaneously reseal. 

What might be the consequence and role of compartmentation of enzymes?

Description : There are two forms of the enzyme carbamyl phosphate synthetase, one in the mitochondrial matrix and the other in the cytoplasm. What might be the consequence and role of this compartmentation of enzymes?

Last Answer : It enables separate control over the rates of urea and pyrimidine synthesis  

what is the primary source of mitochondrial DNA?

Description : (a) From what primary source is the DNA in your mitochondria, your mother or your father? (b) Speculate onpossible inheritance patterns if there were a defect in one or the other parent’s mitochondria.

Last Answer : (a) Mother. (b) If a defect exists in a mitochondrial gene, all progeny from that female will carry the defect. Several well-defined diseases resulting from such a defect have been described. 

Mitochondria - what might be the significance of having such a complex membranous structure?

Description : Given that mitochondria do not have the same aggressive autolytic capacity as lysosomes, what might be the significance of having such a complex membranous structure? After all, the ... reticulum and the plasma membrane could potentially support those enzymes found in mitochondrial membranes.

Last Answer : In fact, bacteria do not have mitochondria, but some types do have membranous intrusions into the cytoplasm called mesosomes. These are similar in function to the inner membrane of ... advantage) control of the various metabolic processes that are now distributed between distinct compartments. 

Down syndrome - what might it be?

Description : In some sufferers of Down syndrome, the somatic cell nuclei do not contain three chromosomes number 21.There is a chromosomal defect relating to chromosome number 21; what might it be? 

Last Answer : A fragment, usually the short arm, of chromosome 21 is translocated onto another chromosome; thus, there are three copies of a fragment of the short arm in any one cell. This is a relatively rare occurrence.  

What is the typical stay for a dog after spaying at an animal hospital?

Description : What is the typical stay for a dog after spaying at an animal hospital?

Last Answer : Typically a veterinarian will release a pet back to their owner, after a spay/neuter, soon after the procedure is complete. Time is given for the animal to come out of the anesthesia and to let any ... to subside. You should allow up to 2-3 hours from the time the vet completes the operation.

The typical response to intravenous injection of 5-HT in an anaesthetised animal is: A. Rise in BP B. Fall in BP C. Rise followed by brief fall in BP D. Transient fall, followed by brief rise, followed by prolonged fall in BP

Description : The typical response to intravenous injection of 5-HT in an anaesthetised animal is: A. Rise in BP B. Fall in BP C. Rise followed by brief fall in BP D. Transient fall, followed by brief rise, followed by prolonged fall in BP

Last Answer : D. Transient fall, followed by brief rise, followed by prolonged fall in BP

Does the typical image from alien sightings look like a fetus in the first term?

Description : Does the typical image from alien sightings look like a fetus in the first term?

Last Answer : It’s only a movie, only a movie…

What does your typical day look like?

Description : What does your typical day look like?

Last Answer : I have no life on my days off. I sleep late, eat food, sit on the computer, don't hang out with anyone cause I'm awesome like that, watch some television, listen to some music, catch up on reading or ... . Basically, I just sit on my fat ass. It'd be nice if I were productive with my extra time!

what does a typical day in your life look like?

Description : what does a typical day in your life look like?

Last Answer : Wake up, iron my shirt while I’m wearing it. Write in my dream journal, call my mom and tell her the worst one. Then I staple my testicles to the ground

what does a typical day in your life look like?

Description : what does a typical day in your life look like?

Last Answer : Wake up, iron my shirt while I’m wearing it. Write in my dream journal, call my mom and tell her the worst one. Then I staple my testicles to the ground

If you look a typical nuclear equation is it possible to tell whether or not the reaction produces gamma reaction?

Description : If you look a typical nuclear equation is it possible to tell whether or not the reaction produces gamma reaction?

Last Answer : It is not possible to know a priori.

If you look a typical nuclear equation is it possible to tell whether or not the reaction produces gamma reaction?

Description : If you look a typical nuclear equation is it possible to tell whether or not the reaction produces gamma reaction?

Last Answer : It is not possible to know a priori.

Can typical cell phones have their files (e.g. ringtones, stored photos) read/written via USB like a Flash drive?

Description : Can typical cell phones have their files (e.g. ringtones, stored photos) read/written via USB like a Flash drive?

Last Answer : You get an install CD for this very reason, some mobiles while connected to a computer shut-down during connection. You can also download the drivers from the phone manufacturers website if you don’t have a disk .

a typical, small, dry cell battery has a voltage of -General Knowledge

Description : a typical, small, dry cell battery has a voltage of -General Knowledge

Last Answer : A typical, small, dry cell battery has a voltage of 1.5 volts.

What is the typical life span of the Cell Phone Antenna Booster?

Description : What is the typical life span of the Cell Phone Antenna Booster?

Last Answer : The usual lifespan is 18 months.

How much DNA is in a typical human cell?

Description : How much DNA is in a typical human cell? 

Last Answer : If the DNA (deoxyribonucleic acid) molecules in a single human cell were stretched out and laid end to end they would measure approximately 6.5 feet (2 meters). The average human body contains 10 to ... cells from one human were unraveled, it would stretch to the sun and back more than 500 times. 

Predominant cell types in typical chronic inflammation are all of the following EXCEPT: A A. Polymorphonuclear leukocytes B. Macrophages C. T helper lymphocytes D. NK cells

Description : Predominant cell types in typical chronic inflammation are all of the following EXCEPT: A A. Polymorphonuclear leukocytes B. Macrophages C. T helper lymphocytes D. NK cells

Last Answer : Polymorphonuclear leukocytes

Predominant cell types in typical chronic inflammatory reactions include all of the following EXCEPT: A A. Polymorphonuclear leukocytes B. Macrophages C. T helper lymphocytes D. None of these

Description : Predominant cell types in typical chronic inflammatory reactions include all of the following EXCEPT: A A. Polymorphonuclear leukocytes B. Macrophages C. T helper lymphocytes D. None of these

Last Answer : Polymorphonuclear leukocytes

If the distance between two consecutive base pairs is 0.34 nm and the total number of base pairs of a DNA double helix in a typical mammalian cell is 6.6 × 109 bp, then the length of the DNA is approximately (a) 2.0 meters (b) 2.5 meters (c) 2.2 meters (d) 2.7 meters.

Description : If the distance between two consecutive base pairs is 0.34 nm and the total number of base pairs of a DNA double helix in a typical mammalian cell is 6.6 × 109 bp, then the length of the DNA is approximately (a) 2.0 meters (b) 2.5 meters (c) 2.2 meters (d) 2.7 meters.

Last Answer : (b) 2.5 meters

If the distance between two consecutive base pairs is 0.34 nm and the total number of base pairs of a DNA double helix in a typical mammalian cell is 6.6 × 109 bp, then the length of the DNA is approximately (a) 2.0 meters (b) 2.5 meters (c) 2.2 meters (d) 2.7 meters.

Description : If the distance between two consecutive base pairs is 0.34 nm and the total number of base pairs of a DNA double helix in a typical mammalian cell is 6.6 × 109 bp, then the length of the DNA is approximately (a) 2.0 meters (b) 2.5 meters (c) 2.2 meters (d) 2.7 meters.

Last Answer : (c) 2.2 meters

In a typical mobile phone system with hexagonal cells, it is forbidden to reuse a frequency band in adjacent cells. If 840 frequencies are available, how many can be used in a given cell? (A) 280 (B) 210 (C) 140 (D) 120

Description : In a typical mobile phone system with hexagonal cells, it is forbidden to reuse a frequency band in adjacent cells. If 840 frequencies are available, how many can be used in a given cell? (A) 280 (B) 210 (C) 140 (D) 120

Last Answer : Answer: A Explanation: Each cell has six other adjacent cells, in a hexagonal grid. If the central cell uses frequency group A, its six adjacent cells can use B, C, B, C, B, and C respectively. In other words, only 3 unique cells are needed. So the answer is 840/3 = 280 frequencies.