The degree to which chromatin is compacted greatly affects its accessability for ____________ , and thus, gene expression.
The degree to which chromatin is compacted greatly affects its accessibility for transcription, and thus, gene expression.
What is Transcription?This is the process which involves copying a segment of DNA into RNA in organisms.
When chromatin is condensed, DNA becomes less accessible for transcription factors and vice versa which was why it was chosen as the most appropriate choice.
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State one reason
scientists would value an experiment that does not support the initial hypothesis.
Scientists value experiments that do not support the initial hypothesis because it helps them to make new discoveries and refine their hypotheses.
HypothesesThey are tentative statements without any experimental test.
Hypotheses are made and tested with experiments. When the outcome of an experiment supports a hypothesis, such a hypothesis is accepted.
When the outcomes of an experiment do not support a hypothesis, such a hypothesis is refined and retested. this leads to more discoveries.
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list 7 things that hormones regulate.
Answer:
heart rate
metabolism
mood
appetite
reproduction
sleep cycles
growth
Explanation:
The part of the cell that can be stimulated by outside chemicals, triggering the cell to
carry out specific functions, is called the
A) cell membrane receptor.
B) lysosome.
C) Golgi apparatus.
D) endoplasmic reticulum.
Answer:
A
Explanation:
by definition, cell membrane receptor are specialized membrane proteins, allowing communication between the cell and the extracellular space.
Which of the following is a distinction between the Krebs cycle in eukaryotes and prokaryotes?
A. Prokaryotes do not use acetyl CoA.
B. The process occurs in the cytoplasm of Eukaryotes.
C. The process occurs in the mitochondria of Eukaryotes.
D. Eukaryotes do not produce carbon dioxide.
E. Prokaryotes do not produce FADH2.
Answer:
C. The process occurs in the mitochondria of Eukaryotes.
Explanation:
In eukaryotes: glycolysis takes place within cytosol, Krebs cycle within mitochondrial matrix & ETC within inner mitochondrial membrane. Prokaryotes undergo binary fission(only cytokinesis) & conjugation.Prokaryotes undergo binary fission(only cytokinesis) & conjugation. Eukaryotes perform mitosis, meiosis(both karyokinesis and cytokinesis).Therefore in prokaryotic cells, the citric acid cycle occurs in the cytoplasm; in eukaryotic cells, the citric acid cycle takes place in the matrix of the mitochondria.
Acetyl-CoA reacts in the first step of the eight step sequence of reactions that comprise the Krebs cycle, all of which occur inside mitochondria of eukaryotic cells. While the Krebs cycle does produce carbon dioxide, this cycle does not produce significant chemical energy in the form of adenosine triphosphate (ATP) directly, and this reaction sequence does not require any oxygen. Instead, this cycle produces NADH and FADH2, which feed into the respiratory cycle, also located inside of the mitochondria. It is the respiratory cycle that is responsible for production of large quantities of ATP and consumption of oxygen. In addition, the respiratory cycle converts NADH and FADH2 into reactants that the Krebs cycle requires to function. Thus, if oxygen is not present, the respiratory cycle cannot function, which shuts down the Krebs cycle. For this reason, the Krebs cycle is considered an aerobic pathway for energy production.
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If you have any queries please ask.
10 facts about mutations
Answer:
Explanation:
4 types of mutation:
Germline mutations occur in gametes. Somatic mutations occur in other body cells.
Chromosomal alterations are mutations that change chromosome structure.
Point mutations change a single nucleotide.
Frameshift mutations are additions or deletions of nucleotides that cause a shift in the reading frame.
3 more:
Over a lifetime our DNA can undergo changes or 'mutations?' in the sequence of bases?, A, C, G and T.
This results in changes in the proteins that are made.
Mutations can occur during DNA replication if errors are made and not corrected in time.
which describes a scientific theory?
A. an idea based on repeated experiments,
allowing you to predict EXACTLY what will
happen
B. an idea that scientific dont believe in
C. an explanation of an occurrence in the
natural world that is well-supported by data
How does the creation of variations in a species promote survival?
Answer:
The variation in the species if organisms modified the organisms for adaptation in the surroundings. After creation of same species must be adapted for natural selection in the environmental effects.
Eyeglasses are one example of how technology has improved lives.
Please select the best answer from the choices provided
T
F
Answer:
true Mark as Brainliest
The color of your eyes is
A)
an inherited trait.
B)
determined by what you eat.
C)
dependent on your environment.
D)
linked to what colors you can see.
Answer:
A.
Explanation:
hope this helped
It is dependent on what you inherit from your parents. Either a dominant gene or a recessive gene. :))
Answer:
its an inherited trait
Explanation:
because it can come from your father ro your mother, or perhaps both
how does flouride cause kidney deasies
Answer:
Hepato- and nephrotoxicity of fluoride have been demonstrated in animals, but few studies have examined potential effects in humans. This population-based study examines the relationship between chronic low-level fluoride exposure and kidney and liver function among United States (U.S.) adolescents. This study aimed to evaluate whether greater fluoride exposure is associated with altered kidney and liver parameters among U.S. youth.
This cross-sectional study utilized data from the National Health and Nutrition Examination Survey (2013–2016). We analyzed data from 1983 and 1742 adolescents who had plasma and water fluoride measures respectively and did not have kidney disease. Fluoride was measured in plasma and household tap water. Kidney parameters included estimated glomerular filtration rate (calculated by the original Schwartz formula), serum uric acid, and the urinary albumin to creatinine ratio. Liver parameters were assessed in serum and included alanine aminotransferase, aspartate aminotransferase, alkaline phosphatase, blood urea nitrogen, gamma-glutamyl transferase, and albumin. Survey-weighted linear regression examined relationships between fluoride exposure and kidney and liver parameters after covariate adjustment. A Holm-Bonferroni correction accounted for multiple comparisons.
The average age of adolescents was 15.4 years. Median water and plasma fluoride concentrations were 0.48 mg/L and 0.33 μmol/L respectively. A 1 μmol/L increase in plasma fluoride was associated with a 10.36 mL/min/1.73 m2 lower estimated glomerular filtration rate (95% CI: −17.50, −3.22; p = 0.05), a 0.29 mg/dL higher serum uric acid concentration (95% CI: 0.09, 0.50; p = 0.05), and a 1.29 mg/dL lower blood urea nitrogen concentration (95%CI: −1.87, −0.70; p < 0.001). A 1 mg/L increase in water fluoride was associated with a 0.93 mg/dL lower blood urea nitrogen concentration (95% CI: −1.44, −0.42; p = 0.007).
Fluoride exposure may contribute to complex changes in kidney and liver related parameters among U.S. adolescents. As the study is cross-sectional, reverse causality cannot be ruled out; therefore, altered kidney and/or liver function may impact bodily fluoride absorption and metabolic processes.
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Which scientist do you
think had the greatest
impact on our current
understanding of life?
Explain your answer.
Answer:
I think Sir Issac Newton is the correct answer
Isaac Newton, an English mathematician and physicist, is considered the greatest scientist of all time.
I think it will help you.
Chemicals given off by the systemic capillary blood to the perivascular tissues often include which of the following?
Glucose
Ammonia
Antibodies
O Oxygen
Hormos
Carbon dioxide
Oxygen is carried from systemic capillary blood to the perivascular tissues
Systemic capillary flow.Systemic circulation blood flow help to carry oxygenated blood from the left ventricle passing through the arteries, to the capillaries in the tissues of the body. The deoxygenated blood returns from the tissue capillaries through a system of veins to the right atrium of the heart.
Therefore, Oxygen is carried from systemic capillary blood to the perivascular tissues
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What changes occur in the atmosphere as you go higher?.
Answer:
Air pressure drops, and temperatures get colder.
Explanation:
Hope this helps!!
At each link of the food web, approximately_________
percent of the energy is passed on to the consumer and
approximately_________
percent of the energy is lost as
heat.
Approximately 10 percent of the energy is passed on to the consumer and approximately 90 percent of the energy is lost as heat.
What is a Food web?This refers to an interconnecting diagram that shows the overall food relationships between organisms in a particular environment.
90 percent of energy is usually lost as heat thereby allowing for the transfer of only 10 percent of energy to the consumers.
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Which of the following illustrates the principle of induction in invertebrates?
A. In an embryo, the presence of a notochord beneath the ectoderm results in the formation of a neural tube.
B. A neuron synapses with another neuron via a neurotransmitter.
C. Eye muscles constrict in response to light.
D. Secretion of TSH stimulates the secretion of thyroxine.
E. The maternal parent induces spontaneous expression of recessive genes.
Answer:
A
Explanation:
A
How does the ectoderm that will make up the future eye know to develop into an eye? The cells are "told" to develop into an eye because the nearby retina releases chemical signals that direct the development of the cells. This process is called induction. Choice A depicts a similar situation. The notocord releases chemical signals that tell the overlying ectoderm that it is time for it to become the neural tube. None of the other choices depict the process of induction.
3. What charts, tables, or drawings would clearly show what you have learned in this lab? lab of modeling water erosion
Each chart, table, or drawing should have the following items:
a. An appropriate title
b. Appropriate labels
Answer:
appropriate labels
Explanation:
to label everything correctly
What process ensures that the normal number of chromosomes?.
Answer:
What processes ensure that the normal number of chromosomes is restored after each cell division? The process of mitosis duplicates the cell's DNA. This ensures that there will be enough chromosomes for both of the daughter cells.
Which statement could be categorized in the overlapping section of the Venn diagram?
Answer:
The statement that could be categorized in the overlapping section of the Venn diagram would be option A. All the statements given above are about the aerobic and anaerobic respiration. The Venn diagram is used to show the similarities and differences between the two. The overlapping section of the diagram shows the similarity and it "uses pyruvate or pyruvic acid".
Explanation:
hope this helps
Answer:A and D are correct.
Explanation:
Delphinus capensis and Delphinus delphis are classified in the same
a. kingdom, phylum, genus and species
b. kingdom, phylum, and genus
c. phylum, genus, and species
d. genus and species
Answer:
d. genus and species
Explanation:
The "Delphinus" in both names are the same, also classified by the system called binomial nomenclature. the first term indicates the genus, and the second term indicates the species. capensis and delphis are the species
Answer:D genus and species
Explanation:
ii I
What do we mean when we say DNA strands run in opposite directions? A. They are antiparallel to each other. B. They are parallel to each other. C. They are perpendicular to each other. D. Their direction cannot be predicted.
They are antiparallel to each othe when DNA strands run in opposite direction.
What is antiparallel position?Antiparallel refer to two molecules of DNA that place side by side but in opposite directions and they never meet. The two strands of DNA are antiparallel. The head of one strand is laid against the tail of the other strand of DNA.
Therefore, They are antiparallel to each othe when DNA strands run in opposite direction.
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Which one is warmer a normal year or El nino year?
I need two paragraphs
explaining how carbon is
transferred within and
between organisms and the
environment.
Which phase of cell division is shown?
prophase
telophase
anaphase
metaphase
50 points!!! WILL MARK BRAINLIEST
The phase of cell division shown in the attached image is anaphase.
What is cell division?Cell division is the process whereby a single cell forms two daughter cells.
Cell division involves the following stages as follows:
ProphaseMetaphaseAnaphaseTelophaseIn the anaphase stage, the chromosome is separated into opposite poles by the centrosomes.
Therefore, as depicted in the image, the phase of cell division shown in the attached image is anaphase.
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Which cells reduce cell mediated immune response?
Answer:
Regulatory T cells (Tregs), either natural or induced, suppress a variety of physiological and pathological immune responses
What is the difference between chromosomal DNA and Plasmid DNA?
Answer:
chromosomal DNA is larger than plasmid DNA
list five responsibilities that you have in society
Answer:
My responsibilities in the society:
To keep my surroundings clean .To work for it's betterment.To help others .To fullfil my duties as a citizen.To protect it.#9 is highlighted. I really need help
Answer:these are biological inheritance
Explanation:
make a poem about taking care of your reproductive system
Answer:
in a dark classroom on a friday
afternoon my teacher told me something
beautiful.
ovaries, she said, have
the same salt content as
the sea. you have
little oceans inside of you!
I imagined the protozoa, the
primordial soup, the sand,
I felt the pull deep inside of
the moon tugging life
from my body.
I felt that potential for life
crown and break beneath
my skin, and it felt beautiful,
yes, but I couldn’t stop myself from placing
a hand on my belly and thinking,
all this life will end with me.
Try this investigation.
This supply is needed:
gallon jar (or other large, glass container)
Follow these directions and answer the questions.
1. Select one of the following habitats and set up a living community. Indicate the habitat you choose. You may use an area nearby to gather organisms or environmental factors for your habitat.
Freshwater aquarium
Woodland terrarium
Marine aquarium
Desert terrarium
Aqua-terrarium
2. Study your habitat for several weeks to observe and record any changes. In a 250-word report, describe your habitat and answer the following questions.
What kinds of organisms does your habitat contain?
What changes occurred in your habitat after a period of time?
Answer:
I deceided to do the project with fresh water from my creek in the backyard. I was hoping to get some living organisms in the water when i scooped it up.The first week there wasnt many changes i did notice the water was turning slightly a different color but no major changes. The secound week my water was more of a green color and not as much brownish clear. There was also some green stuff growing which i think that was alge.The third week my water was all the way green and i noticed there was some stuff floating in the water but i dint see any living organisms. There was also more alge in it than last time.
Explanation:
Some spelling is wrong but overall i got a good grade on this i hope this can help :)