The typical human chromosome has about 150 million base pairs that the cell replicates at the rate of 50 pairs per second.
What is chromosome ?A chromosome is a thread-like structure present in the nucleus of cells such as plant, animal and human cells and it is made of a molecule of DNA (Deoxyribonucleic acid) and histone proteins.
It is composed of three components, DNA, proteins and RNA, amount of the DNA content ranges from 30 to 40 %, the amount of proteins from 50 to 65%, and small amount of RNA from 1 to 10%.
Two types of protein present in DNA such as histone and non-histones proteins, histone constitute large amount (90% of total protein), whereas non-histone is present in small amount (around 10% of total protein).
The histone protein is basic, whereas, the DNA is acidic, so it can be neutralized; DNA in chromosome is present in two forms such as Euchromatin and Heterochromatin.
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Lymph is __________. excess tissue fluid that has escaped from arteries excess tissue fluid that has leaked out of capillaries excess blood that has escaped from veins
Answer:
Excess tissues fluid that has leaked out of capillaries.
help pls !! will give brainliest -
7A - Indicate the complementary strand of the DNA molecule shown here.
5’ A A T C G C T G C C T 3’
7B - If the original DNA molecule shown in question 7A were used in the process of transportation to produce mRNA, then what would be the sequence of the mRNA molecule?
(please answer both questions)
Answer:
A A T C G C T G C C T
T T A G C G A C G G A
U U A G C G A C G C A
Explanation:
Adenine (A) and Thymine (T) pair together. Cytosine (C) and Guanine (G) pair together.
With mRNA, the RNA doesn't have Thymine, so it replaces it with Uracil (U).
Identify the type of blood vessel shown below. How does its structure match its function?
Answer:
Can you also send the diagram
What causes a substance’s identity to change during a chemical change?
One variable not mentioned in the description of the experiment that could affect the results of the investigation is reduced canopy cover. Describe the effect that canopy cover would likely have on the results of the investigation.
The canopy cover can affect the results of an investigation because a higher canopy cover is accompanied by a decrease in the availability of sunlight.
The canopy cover is the proportion of the ground covered by vegetation when it is viewed from vertically above the planted area.
The level of canopy cover affects light availability on the ground and also its microclimate, thereby this feature can also alter any biological experimental procedure by affecting the level and type of biodiversity.
A reduced canopy cover may alter any experimental outcome by increasing the energy/light input in the ground cover stratum, thereby likely affecting biodiversity.
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Give 3 examples of microscopic organisms
Question 27
A prokaryotic cell has which of the following?
A
Centrioles
B
Lysosomes
C
Plasma membrane
D
Mitochondria
©
Endoplasmic reticulum
Answer:
C) Plasma Membrane
Explanation:
The four main structures are Plasma membrane, ribosome, cytoplasm, and genetic material.
_____ acts on proteins to produce peptides which are later broken down into _____ in the small intestine
Can sunlight change the distribution of traits in a population?(1 point)
No, because the environment can only change behaviors.
Yes, because the environment is the only factor that can change traits.
Yes, because the environment can factor into the distribution of traits.
No, because the environment can only change traits in individual organisms.
A number of factors including environmental factors (for example sunlight) can also play a role in how the traits in a particular population is distributed.
Sunlight can change the distribution of traits in a population because the environment can factor into the distribution of traits.
The distribution of traits is changed when factors in the environment change/evolve and influence natural selection. These environmental factors including sunlight alter the selection of traits passed to generations and can have an effect on the distribution of the traits on Earth.Learn more about environmental factors: https://brainly.com/question/3638961
The sunlight can be a factor for the distribution of traits in a population. Option C is correct.
Natural selection:
It is phenomenon in the evolution in which a population of species in distributed in the habitat or evolve by the certain traits that fits in the nature.
For example-
A population of a species have two types of traits,
1. Individuals that can bear the intense light.
2. Individuals that can not bear the intense light, prefer low light.
After several generation the whole population will divide in the groups according to their ability to bear the intensity of light.
It can also result in the new species that only wake up at night to avoid the sun.
Therefore, the sunlight can be a factor for the distribution of traits in a population.
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explain four ways in which saprophytes are economically important in nature.
Answer:
They break down dead and decaying organic matter into simple substances
Explanation:
.
PLZ HELP! what would happen to the current heliocentric model if entirely new evidence emerges that cannot be explained by the model?
Answer:
At least give some answers to go by, anyway, if the evidence is not yet proven then nothing, if it is proven to be true(whatever it is) it would make us change the current model to support this new evidence.
Explanation:
Don't expect a perfect answer, I haven't done the question to know the answer choices, so this is all I can presume. and if somebody comes in here and pastes the answer from A.P.E.X without stating that they copied it I am going lose my mind.
Hey this doesn’t make sense to me
Answer and Explanation:
The question is asking you any ingredients which are plants but contains in a pizza. It also said that it could include plants that are fed to animals so for example, beef is on top of the pizza then you can write grass.
A DNA microarray contains immobilized DNA that corresponds to different genes. The microarray is hybridized with fluorescently labeled DNA probes reverse transcribed from the control and experimental mRNA samples. The control probe is labeled with a red fluorochrome, while the experimental probe is labeled with a green fluorochrome. What will be the color of the spot representing a gene with moderately upregulated expression in the experimental sample relative to the control one
The color of the spot of a gene with moderately upregulated expression will be lime-green. A DNA microarray is a technique used to determine the expression level of many genes simultaneously.
A DNA microarray is a laboratory technique used to identify the genes that are being expressed in a cell.
A DNA microarray contains many tiny spots of specifically labeled cDNA samples referred to as probes, which can be hybridized by base complementarity to transcribed (mRNA) gene sequences.
In the DNA microarray, the probes can be fluorescently marked gene sequences.
After hybridization, the DNA microarray is then scanned in order to determine the level of gene expression of each mRNA that hybridizes with their corresponding probes on the slide.
In this case, green spots evidence genes that are being strongly expressed in the sample.
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mention 3 ways in which the lack of care to the coral reefs can be resolved
Answer:
1 Recycle and dispose of trash properly.
2 Use environmentally-friendly modes of transportation.
3 Save energy at home and at work
Explanation:
Explain how protein electrophoresis is done. Is it different from DNA and RNA electrophoresis?
what was the first genetically modified food approved for sale in the us
Answer:
Flavr Savr™ Tomato
Explanation:
which population should display the highest growth rate?
Which of the following statements would correct one of the roles listed in the table?
Answer:
Glucose combines with water to form carbon dioxide.
Explanation:
Glucose combines with water to form carbon dioxide.
Construct a table to give ONE source, the functions and the effects of the deficiency of the following micronutrients, Vitamin C, Vitamin D, Iron and iodine.
Answer:
I say Vitamin D.
Explanation:Confirmed with the test results.
describe how the plasma membrane helps maintain homeostasis
Answer:
The plasma membrane, also called the cell membrane or phospholipid bilayer, is the sack that surrounds cells. ... The plasma membrane maintains homeostasis in the cell by keeping cell contents in and foreign material out, and by providing controlled avenues for the transportation of fuel, fluids and waste
Explain why is it important to investigate water retention properties of soils
Answer:
Soil water can affect the structural integrity or coherence of a soil; saturated soils can become unstable and result in structural failure and mass movement. Soil water, its changes over time and management are of interest to geo-technicians and soil conservationists with an interest in maintaining soil stability.
Explanation:
I hope it helps..
Adaptational characteristics of himalayan animals
Answer:
Thick layer of body fat or bubbler, to reduce body heat loss. Strong hooves for walking on rock slopes. Thick fur on paws for protection from cold while walking on snow.
Explanation:
1) Thick layer of body fat or bubbler, to reduce body heat loss.
2) Strong hooves for walking on rock slopes.
3) Thick fur on paws for protection from cold while walking on snow.
The element lithium has two common isotopes: Li–6 and Li–7 If the average atomic mass of lithium is 6.94004 u, determine its percent isotopic abundances. Step by step and explain.
First we need to determine the average atomic mass of these isotopes.
The atomic masses of Lithium-6 and Lithium-7 are 6.0151amu and 7.0160amu respectively.
Now that we have that, we need to set up the relative abundance problem.
We can do that using the formula (M1)(x) + (M2)(1-x) = M(E)
Because you asked for details, I'll explain what each variable stands for-
M1 = the mass of one isotope
x = the relative abundance
M2 = the mass of the second isotope
M(E) = the atomic mass of the element from the periodic table
Therefor all we do now is plug in our respective variable.
M1 = 6.0151amu (Lithium-6)
x = unknown relative abundance
M2 = 7.0160amu (Lithium-7)
M(E) = 6.94004amu
Now the formula plugged in will look like this:
6.0151x + 7.0160(1-x) = 6.94004
Now doing some quick math, we can determine that x=0.07589
For the last step we need to find the percent abundance of each element, which is quite simple. We take X and multiply it by 100 to find Lithium-6, so 0.076 x 100 = 7.6%
and since then we use 1 - X, so 1 - 0.076 = 0.924
We take that and also multiply it by 100, so 0.924 x 100 = 92.4%
Conclusion:
The abundance of the Lithium-6 isotope is 7.6%, and the abundance of the Lithium-7 isotope is 92.4%.
Please ask if you have any questions and I hope this was helpful!
Why can mutations in one organism function the same way in a different organism?
No only a small percentage of variants cause genetic disorders of the most have no impact on health or development. For example some variants alter a gene DNA sequence.
The process in which impurities are removed from a mineral
Answer:
The removal of impurities is usually done chemically. For example, in the manufacturing of iron, calcium carbonate is added to the blast furnace to remove silicon dioxide from the iron ore. Zone refining is an economically important method for the purification of semiconductors.
Explanation:
_______and mucous work to trap dirt and germs
before we inhale.
Answer:
Cilia
Explanation:
What is an ecological pyramid with explanation
Answer:
Explanation of Ecological pyramid :- A graphical representation in the shape of a pyramid to show the feeding relationship of groups of organisms, and the flow of energy or biomass through the different trophic levels in a given ecosystem.Examples of Ecological pyramid :- The productivity pyramid is also called the energy pyramid. Sun is the primary source of energy. Fungi and bacteria are decomposers which can procure nutrient from any trophic level by breaking down dead and decaying organisms. These nutrients return to the soil and ate taken up by plants.3 Major Types of Ecological Pyramids :- | Pyramid of Number, Biomass and EnergyPyramid of Number: It depicts the number of individual organisms at different trophic levels of food chain. Pyramid of Biomass .Pyramid of Energy.Explanation:
Hope this helps you XD ✌️Carry on learning !!Which organelle captures energy from the sunlight and uses it to produce food in a plant cells
A. Chloroplast
B. Nucleus
C. Ribosomes
D. Mitochondria
how is glaciers melting in alaska a problem for humans
Answer:
The water will rise
Explanation:
We can drown
While eating dinner, Isabelle starts choking on a grape. She can't cough, talk, or breathe. What should her mother do to help her?
*Heimlich maneuver
(or buy a LifeVac device to keep in your car for emergencies)
Answer:
c. Do the Heimlich maneuver.
Explanation: is correct. post protected