Explain how damaged DNA in a stem cell could cause a large impact to an organism

1 answer:

7 0

DNA damage can affect normal cell replicative function and impact rates of apoptosis (programmed cell death, often referred to as 'cellular senescence'). Alternatively, damage to genetic material can result in impaired cellular function, cell loss, or the transformation of healthy cells to cancers.

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The physical basis of memory is a pathway through the brain called a memory trace, in which new synapses have formed or existing

vekshin1

Answer:

True

Explanation:

Memory is formed by creating new neural pathways from stimuli we receive (smell, vision, auditory etc) to the brain where the pereception of it occurs.

Memory is defined as ability of the brain to encode, store, and retrieve information when needed. Memory forming is actually information processing that includes:

• sensory processor - sensing the information from the outside world ( chemical and physical stimuli)

• Working memory (short-term memory) - encoding (stimuli information) and retrieval processor (from previously stored material)

• Long-term memory - to store data through systems.

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3 years ago

The function of most proteins depends primarily on the what?

miv72 [106K]

Answer:

The function of a protein is directly dependent on its threedimensional structure (Figure 3.1). Remarkably, proteins spontaneously fold up into three-dimensional structures that are determined by the sequence of amino acids in the protein polymer.

Explanation:

my answer

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4 years ago

Which is the least likely reason that pigs have been chosen as donors for humans in the process of xenotransplantation?

Mamont248 [21]

Free of unknown diseases is the least likely reason that pigs have been chosen as donors for humans in the process of xenotransplantation.

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3 years ago

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How do plasmodesmata affect the individuality of the cells?

Lisa [10]

Answer:

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Plasmodesmata play roles in both cellular communication and in molecule translocation. Plant cells must work together as part of a multicellular organism (the plant); in other words, the individual cells must work to benefit the common good. Therefore, communication between cells is crucial for plant survival.

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3 years ago

High doses of caffeine interfere with the dna replication checkpoint mechanism in mammalian cells. why then do you suppose the s

Kipish [7]

Molarity = $\frac{Solute(in Moles)}{Solution (in Liters)}$

Moles of Caffeine = Mass of Caffeine/Molar Mass
Mass = 100 mg = 0.1 g
Molar Mass = 196 g/mole

Moles of Caffeine in one cup = 0.1/196 moles
= 5.102 * 10^-4 moles

If one cup of coffee is ingested (A typical adult contains about 40 liters of water),

Molarity of caffeine = [(5.1 * 10^-4)/ 40] M
= 0.012755 mM

The toxic molarity of caffeine in the body 10mM

How many cups will be toxic?
= Toxic Molarity/ Molarity of 1 cup
= 10/ 0.012755
= 784

In other words, you would have to drink 784 cups of coffee to reach the dose required to interfere with the DNA replication checkpoint mechanism.

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4 years ago