234 Answered Questions for the topic Cell Biology

05/10/19

Effects of exercise on the brain?
I am well aware of the phenomenon of neurogenesis induced by exercise, as well as the dopamine release that results from exercise. I am really interested in neuropsychology and the effects of... more
Follows • 1
Expert Answers •1

05/07/19

True or False. The gene is the basic unit of genetic information.
Follows • 1
Expert Answers •1

05/06/19

How do RNA cells differ from DNA?
Follows • 1
Expert Answers •1

05/05/19

True or False. Prokaryotic genes are often regulated in response to external signals such as nutrient availability.
Follows • 1
Expert Answers •1

05/04/19

What physiological processes give rise to a linear cell survival curve?
If we plot the number of surviving cells in a structure over time (assuming no replacement), the shape of that curve should imply something about the underlying process responsible for cell death.... more
Follows • 1
Expert Answers •1
Cell Biology Biology

05/02/19

Excess proteins in cells?
Damaged proteins are broken down in cells by ubiquitin-proteasome pathway. Do cells experience excess of proteins? If yes, how excess proteins are taken care of?
Follows • 1
Expert Answers •1

05/02/19

Why are there no Nissl bodies in the axon?
What could be the significance of not having Nissl bodies (endoplasmic reticulum) in the axon hillock (a part of the cyton) and axon? Does it have something to do with the processing of action... more
Follows • 1
Expert Answers •2
Cell Biology Biology Cancer

05/01/19

How is the growth of benign tumors suppressed?
A benign tumor has an outer layer of cancerous cells beyond which are regular cells (I Think). The Tumor must have some kind of boundary layer like a wall where somehow the cancerous cells can't... more
Follows • 2
Expert Answers •1

05/01/19

The flow of genetic information is from DNA to RNA to protein, via the processes of transcription (TC) and translation (TL). This concept is known as the Central Dogma of molecular biology.
Follows • 1
Expert Answers •1

04/30/19

Can methylation of a promoter induce gene expression in some rare cases?
Can methylation of a promoter induce gene expression in some rare cases? I've read somewhere that methylation of an intron can induce gene expression (eg. Igf2). How is that even possible? Thank... more
Follows • 1
Expert Answers •2
Cell Biology Biology Genetics

04/30/19

Are gametes diploid or haploid?
Some sources say that gametes are haploid, some say that they are diploid.I'm confused.
Follows • 1
Expert Answers •1

04/30/19

Why is too much glucose harmful?
I learned the citric acid cycle in biotechnology school and how cells work; about ADP and ATP and how the Cellular respiration (C6H12O6 + 6O2 -> 6CO2+6H2O) works.I am interested in understanding... more
Follows • 1
Expert Answers •1

04/29/19

Can/Have cancer cells be/been used in stem cell culture lines?
Since Cancer cells have unlimited growth potential, can they be induced towards totipotency and pluripotency? so, can cancer cells be used in stem cell culture because of similar properties of... more
Follows • 1
Expert Answers •1
Cell Biology Microbiology

04/29/19

What is the meaning of multicellularity?
I can't understand what multicellularity is. Wikipedia states that any organism having many cells is multicellular. By this definition bacteria can also be multicellular. For example, cyanobacteria... more
Follows • 1
Expert Answers •1

04/28/19

Is abiogenesis possible today?
Life on earth started about 3.5 billion years ago. I would assume abiogenesis happened because the conditions were right. Would the current earth conditions allow for new abiogenesis and completely... more
Follows • 1
Expert Answers •2
Cell Biology Biology Biochemistry Cell

04/28/19

Concentration dependent cellular processes?
Are there any famous biological processes that depend strongly on a chemical concentration reaching a particular value, like some sort of switch? E.g. if concentration of chemical x reaches... more
Follows • 1
Expert Answers •1

04/26/19

How does the color of henna fade?
Henna contain lawsone pigment that attaches to the proteins of the skin,hair,etc.But after a few weeks the color fades?How does the color fade?Is the pigment volatile or it is degraded by the... more
Follows • 1
Expert Answers •2
Cell Biology Biology Genetics Senescence

04/26/19

What are senescent cells doing in our bodies?
I'm reading a paper that mentioned the elimination of senescent cells delays aging. I'd like to receive more information about it.The Baker study published in Nature demonstrates that targeted... more
Follows • 1
Expert Answers •1
Cell Biology Biology Physiology Organs

04/25/19

Why is most tissue cellular?
Most tissue is comprised of cells. Why? It would seem inefficient to have so many individual nucleus, membranes, etc.?Specifically: Not all tissue is cellular. Much tissue is extracellular matrix.... more
Follows • 1
Expert Answers •1

04/21/19

When should endocytosis inhibitors be used in cell binding assays?
I'm beginning to do some cell-binding assays and I would like for my proteins to not be endocytosed by my mammalian cells. Typical suggestions are for the cells to be kept on ice and that the... more
Follows • 1
Expert Answers •1

04/20/19

True or False. In DNA, the bases pair A T and G C; this complementary base pairing is the key to storage, transfer, and use.
Follows • 1
Expert Answers •2
Cell Biology Biology Genetics Dna

04/19/19

What is the number of DNA strands per cell?
I wonder if each cell possess only one strand of DNA which according to my book is more than "7 feet" long(if uncoiled), then why does human has 46 chromosomes which are actually coiled chromatin... more
Follows • 1
Expert Answers •1

04/18/19

A photosynthesizing mouse?
N. Shubin's *Your Inner Fish* makes the point several times that there is a lot of functional similarity between some seemingly remote gene cousins. If that needed reinforcing we have the... more
Follows • 1
Expert Answers •1

04/17/19

Choose the all the types of RNAs and their functions in translation.
A. rRNAs are templates that provide coding information to form proteinsB. rRNAs are ribozymes that catalyze the addition of amino acidsC. mRNAs are adaptor molecules that contain amino acidsD.... more
Follows • 1
Expert Answers •1

04/17/19

From the following list, choose all the parts that are present in an mRNA that is ready to be translated.
A. Promoter SequenceB. IntronsC. Untranslated regions (one at 5' one at 3')D. 5' capE. Poly(A) tailF. Exons
Follows • 1
Expert Answers •1

Still looking for help? Get the right answer, fast.

Ask a question for free

Get a free answer to a quick problem.
Most questions answered within 4 hours.

OR

Find an Online Tutor Now

Choose an expert and meet online. No packages or subscriptions, pay only for the time you need.