Different types of cells look and function differently, the basis for these differences is DIFFERENT PATTERNS of gene expression. This process (differential gene expression) leads to cell specialization.
Gene expression refers to the process by which the genetic information flows from a DNA sequence (i.e., a gene) to an mRNA molecule and finally to a protein.
In somatic (body) cells, the differential patterns of gene expression lead to the generation of different proteins and ultimately to different types of cells (cell phenotypes).
In consequence, cells are specialized to perform specific functions because different genes are being expressed.
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two chromosomes that each have genes for the same characters are
Answer:
These are called homologous chromosomes, or homologs.
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Not much grass grows on the nesting grounds
The process of introducing a needed, normal gene, into human cells is called DNA mapping. True False
Answer:
true it is known as DNA mapping
What are MAD (mitotic arrest deficient) proteins and when are they important in the cell cycle?
Answer:
The mitotic arrest deficient protein MAD2B (MAD2L2) is a member of a MAD family of proteins and shows 48% similarity to MAD2 (MAD2L1) [1], [2]. Both MAD2 and MAD2B can bind to the anaphase promoting complex or cyclosome (APC/C), which is a downstream target of the mitotic spindle checkpoint.MAD (mitotic arrest deficient) are proteins related to spindle cell cycle checkpoint and it is important since they prevent the segregation of sister chromatids until all have bound to the spindle.
The cell cycle ensures the duplication of the genome and its distribution in daughter cells by passing through a coordinated and regulated sequence of events.
A series of checkpoints guarantee the orderly progression of the phases of cell division and the correct distribution of the duplicated genetic material in the daughter cells.
The checkpoints during mitosis are:
At the end of stage G1 and before S.Before anaphase in mitosis.DNA damage checkpoints in G1, S or G2.The checkpoint before anaphase in mitosis guarantees the separation of chromosomes, and operates by activating the Mad2 protein that prevents the degradation of segurin, until the conditions are appropriate.
That is, the Mad2 protein prevents the segregation of sister chromatids until they have all bound to the spindle.
Therefore, we can conclude that MAD (mitotic arrest deficient) are proteins related to spindle cell cycle checkpoint and it is important since they prevent the segregation of sister chromatids until all have bound to the spindle.
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During meiosis, the cells that are created are used during
a. regeneration of new tissue
b. regeneration of worn out cells
c. fertilization
d. cytokinesis
e. more than 1 answer is correct
Answer:
C
Explanation:
because fertilization is the fusion of male gamete and female gamete that arises from meiosis
What is the proper definition for abiotic?
Answer:
In biology and ecology, abiotic components or abiotic factors are non-living chemical and physical parts of the environment that affect living organisms and the functioning of ecosystems
Explanation:
a nonliving condition or thing, as climate or habitat, that influences or affects an ecosystem and the organisms in it: Abiotic factors can determine which species of organisms will survive in a given environment.
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which of the following organisms obtain their energy from producers only
heterotrophs.
Explanation:
Organisms that obtain their energy from producers or other consumers are heterotrophs.
What is an example of a microorganism acting in a harmful way? Question 6 options: Bacteria infecting a cut. Bacteria aiding in digestion. Bacteria used to create yogurt. Fungi decomposing waste in a septic tank.
Answer:
I would say A but im not sure
Explanation:
Answer:
bacteria aiding in digestion
if woman can not have children does that mean that she does not have all the property of life and is therefore not alive
what is the space between the presynaptic and postsynaptic membranes?
Answer:
The synapse at the neuromuscular junction has three characteristic features of chemical synapses in the nervous system. First, there is a distinct separation between the presynaptic and the postsynaptic membrane. The space between the two is known as the synaptic cleft.
Explanation:
The force the Earth exerts on the sun is equal in magnitude to the
force the sun exerts on the Earth.
O True
o False
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The given statement is true, because according to Newton's third law of motion ~ " Every action has an equal and opposite reaction " .
what unwinds DNA molecule
Answer:
DNA helicases unwind DNA during DNA replication
Explanation:
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HELP................
Answer:
Active Transport
Explanation:
The stomata are flattened stacks of sacs and the --(blank)-- is a sticky substance where complex organic products of photosynthesis are made.
A. stomata
B. stroma
C. grama
the answer is well stomata
Answer: C
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in most sexually reproducing organisms, the diploid phase of the life cycle begins at
The diploid phase of the life cycle begins with the formation of the zygote.
Meiosis is referred to the type of cell division which occurs in the production
of male and female sex cells. This also occurs during sexual reproduction.
Parent cells provide male and sex cells such as sperm and egg which
contains DNA. They then fuse together to form a zygote which is the diploid
phase as a result of the fusion of two haploid cells. The zygote then
continues to undergo some meiotic processes which reduces it to back to a
haploid cell and consequent growth to form a fetus.
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What are the three general classes of neurons that correspond to the three major aspects of nervous system function
ANSWER FOR BRAINLIEST!!!
Cryptosporidium parvum (C. parvum) is a single-celled, eukaryotic parasite that infects human cells in the digestive system and causes illness.
a. True
b. False
The statement 'C. parvum is a single-celled, eukaryotic parasite that infects human cells in the digestive system and causes illness' is TRUE. This parasite causes diarrhea.
Cryptosporidium parvum (C. parvum) is a single-cell protozoan that may cause severe self-limited diarrhea in immunocompetent individuals.
Cryptosporidium parvum develops its complete life cycle in the human intestines (also it can be found in animal intestines).
This species (Cryptosporidium parvum) is one of the six (6) known species of Cryptosporidium.
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what structures do human epithelial cells have in common with elodea cells
Answer:
They both have a cell membrane,nucleus and cytoplasm.
Explanation:
Which statement describes the process of osmosis in an animal cell
Answer: B.
Explanation:
The statement that describes the process of osmosis in an animal cell is water molecules move across the plasma membrane until solute concentration are equal on both sides of the membrane.
OSMOSIS:Osmosis is the process by which water molecules move from a region of higher concentration to a region of lower concentration through a semipermeable membrane.
According to this question, which is describing the structure of the cell membrane as a semipermeable membrane. The cell membrane selectively allows the passage of certain molecules.
Osmosis will occur in this animal cell when water molecules move across the plasma membrane until solute concentration are equal on both sides of the membrane.
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which division of the ans is referred to as the rest and digest division?
This is a short question if anyone would be able to help me please i really need the help!!!!
What is it i hope i can helps you:(
what happens if the cell membrane does not pinch inward during telophase?
Answer:
It doesn’t pinch in for a plant cell because a plant cell has a cell wall. It grows a cell plate
I’m animals cells it should pinch in, but if it doesn’t, the cell can’t divide and you just end up with one cell containing 2 nuclei
The effect of pH on a certain enzyme is shown in the graph. At what pH would the enzyme be most effective?
Answer:
2
Explanation:
The enzyme will be the most effective between 8 and 10
The enzyme will show maximum activity in the range of pH between 8 and 10. This can be the enzyme's optimum pH as at this range it is found to be most effective. Thus, the correct option is 2.
What are enzymes?Enzymes are the biocatalysts. They act as enzymes in the biochemical reactions by reducing the activation energy required by the reactants to form products. Enzymes remain unused in a reaction.
Enzyme activity depends upon different factors which include temperature, pressure, pH, etc. Enzymes show maximum activity at the optimum conditions of these environmental factors.
From the given graph, it can be interpreted that the enzyme shows maximum rate of action between the pH range of 8 and 10. Thus, this is the optimum range of pH.
Therefore, the correct option is 2.
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algien conoce a yaninsoto y tiene esta foto de perfil xd
Answer:
no, pero es un show si es dime cual es el nombre del show
what are the consequences of either an incomplete or absent ""s"" stage of the cell cycle?
Answer:
If a cell has not properly copied its chromosomes or there is damage to the DNA, the CDK will not activate the S phase cyclin and the cell will not progress to the G2 phase. The cell will remain in S phase until the chromosomes are properly copied, or the cell will undergo programmed cell death.
Explanation:
The consequences of an incomplete/absent "S" stage in a cell cycle are ;
A programmed cell death The cell will not move to the G2 phase of the cell cycleThe absence or incomplete "s" stage of the cell cycle occurs when the a cell does not completely copy its chromosomes or when there is a significant damage to the genetic material ( DNA ) of the cell. when any of these abnormalities occurs the "s" phase stage of the cell cycle will not be activated until the cell chromosomes are correctly copied. Therefore the cell will not move to the G2 phase of the cell cycle
Hence we can conclude that The consequences of an incomplete/absent "S" stage in a cell cycle are ; A programmed cell death and The cell will not move to the G2 phase of the cell cycle
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The genetic diversity of a rocky shore habitat declines precipitously as the climate warms, causing a decline in the number of species present. The decline of species along the rocky shore negatively affects the entire region, including bird populations and shallow offshore habitats. This scenario is best described as a change in the region's ______________________.
The scenario that is best described here is a change in the region's BIODIVERSITY. This measure (biodiversity) indicates the genetic/phenotypic variability found in a region.
Biodiversity refers to the genetic and phenotypic variability of the organisms found in a particular geographic region or the variety of life on the Earth's planet.
Biodiversity can be used to indicate the amount of variation at different levels (i.e., genetic, species, and ecosystem levels).
The different types of animals, plants and microorganisms that live in a forest represent an example of biodiversity.
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Write a clear, thoughtful 2 paragraph argument that explains HOW 3 body systems work together to promote life functions.
0
No Effort
10
Student correctly identifies at least 3 body systems from the seven systems taught in class.
Student applies knowledge of each body system giving their function and major organ/s.
Student clearly demonstrates through explanations of how each body system works with each other.
Student uses learned writing strategies and writes in complete sentences
Minimum of 8 complete sentences.
Jaime went to the doctor because several strange things have been happening to him. He first noticed that sometimes when he tries to touch something he is unable to feel it. Then he noticed that when he tried to walk his legs wouldn’t always move the way he wanted them to. Lastly, he has been unable to control when he urinates.
HUMAN BODY SYSTEMS QUICK GUIDE
Circulatory : Transport gasses(oxygen,CO2) and nutrients throughout body;
Digestive: Breakdown of nutrients (food);
Nervous: Process & respond to stimuli;
Respiratory: Gas exchange;
Muscular: Movement;
Excretory: Eliminates waste to maintain homeostasis;
Immune: Defense against disease
Answer:
water is H2o have a good day
Explanation:
the auditory ossicles transmit vibrations from the
Answer:
tympanic membrane across the middle ear.
Explanation:
The tympanic membrane across the middle ear to the oval window of the inner ear.
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What is Cost ???
Answer:
An amount that has to be paid or spent to buy or obtain something is called cost.
Answer:
brainliest me
Explanation:
thx for the points