The skin is an organ that turns over rapidly: dead cells are constantly being shed and replaced by new ones. Which of these factors help ensure that the new cells have the same identity as the old cells? O When cells differentiate they only maintain the DNA of lineage-specific genes, so these genes are transmitted to the daughter cells Cells in all tissues have the same epigenetic marks Epigenetic marks are completely erased when the parent cell undergoes mitosis but are rapidly re-established in the daughter cells Epigenetic marks are maintained through mitosis so daughter cells express the same genes as the narental cells

Q: Can I ask for the references? Thanks

A: The question pertains to the concept of genetic mosaicism, which is a phenomenon that occurs when…

Q: Hello, I'm not following the last question here. Please help.

A: Vasopression is also called anti diuretic hormone.It is a hormone synthesized from the AVP gene as a…

Q: can u please answer #9

A: The alimentary canal is the passage through which the food passes from the mouth to anus during the…

Q: How many stereoisomers are possible for the molecule formed by the reaction described in the…

A: Carbohydrates are an important biomolecule, all types of cells require carbohydrates for survival.…

Q: What did Henry Dale do?

A: Sir Henry Hallett Dale OM GBE  (9 June 1875 – 23 July 1968) was an pharmacologist and physiologist.

Q: ng 1.3 Check Your Understanding . Study the fish aquarium system at the right. a. List at least six…

A: An aquarium can be described as a closed artificial ecosystem in which fish and plants are able to…

Q: D

A: Cell membrane is one of the major components of the cell. The membrane consists of bilayer of…

Q: what did percy lavon julian do (add pictures please)

A: Medicines are designed to treat illnesses and medical conditions. They help to alleviate symptoms,…

Q: er __What must be done if an admitted patient refuses to blood extraction?.

A: A patient's blood is often extracted from an admitted patient to help a physician diagnose a disease…

Q: Andrea is flushed and her teeth are chattering even though her bedroom temperature is 72°F. Why do…

A: When a person is flushed it means that the person turns red as they are ill or hot due to a strong…

Q: The electron micrograph shows a blood capillary. The features of this capillary that contribute to…

A: Capillaries are the smallest blood vessels in the body, connecting the smallest arteries to the…

Q: i don't understand someone help

A: Food chain is a linear flow of food or energy through an ecosystem from producers to the…

Q: Please help, i need this to study, i dont get it, make the answer clear

A: muscle contraction is basically the shortening of sarcomere , these are the units of myofibrils with…

Q: Please give me long detailed answer

A: Constitutive heterochromatin refers to regions of the genome that are consistently condensed and…

Q: ||||

A: Activation energy is the minimum energy required for the reaction to initiate and this energy…

Q: The last part doesn't have an answer. Can someone help?

A: Introduction: BOD stands for Biochemical Oxygen Demand. It is a measure of the amount of oxygen…

Q: Z1 PS K CH 22

A: Cell cycle is of sequential events which is responsible for dividing the parent cell into two…

Q: O O C

A: Inheritance or heredity is passing on one trait from the parents to the progeny by either asexual or…

Q: I need help to Label the structures.

A: Tonsils are part of the lymphoid system. They are the lymph nodes that are located at the back of…

Q: could you please work the whole question out?

A: Answered the question.

Q: are you sure? i got a different answer

A: Skeletal muscles are striped and voluantary muscles. On the other hand, cardiac muscles are the…

Q: are you sure? i thought the answer was b not c

A: The primary motor cortex, also known as M1 or the precentral gyrus, is a region of the cerebral…

Q: Can someone help me plz

A: Photosynthesis is the process by which green plants and certain other organisms transform light…

Q: I don't know what is that picture. I need help with the nameof label

A: The skull is made of cranial and facial bones. The brain is situated inside the cranial vault,…

Q: Mary O'Keefe calls the Inner City Health Care office in a panic. Gwen Carr, CMA (AAMA), answers the…

A: Electrocution is defined as death that occurs mainly by electric shock, either deliberate or…

Q: In The Day of the Triffids, after most people in the world are blinded by an apparent meteor shower,…

A: The alleles are generally of dominant and recessive type and some other forms like codominant are…

Q: Help me to answer those questions please

A: Tonicity refers to osmotic pressure gradient. It is defined as relative concentration of solutes…

Q: What is sick

A: An abnormal condition of an organism which interrupts the normal bodily functions that often leads…

Q: Epistasis Epistasis is when a gene will interfere or hide expression of another gene. In Labrador…

A: Epistasis is the phenomenon of the gene mutation where presence of one of the alleles masked the…

Environmental health and hazards

An organism's environment is the environment in which it lives and has an impact on its well-being. The World Health Organization (WHO) defines environmental health as "those aspects of public health, such as quality of life, that are influenced by physical, chemical, biological, social, and psychosocial components in the environment." Environmental health is concerned with both natural and man-made settings in order to enhance public health. Environmental science, occupational medicine, toxicology, and epidemiology are the key subdisciplines of environmental health.