Answer:
20,000,000,000
Explanation:
Adult humans have roughly 20–30 trillion red blood cells at any given time, constituting approximately 70% of all cells by number. Women have about 4–5 million red blood cells per microliter (cubic millimeter) of blood and men about 5–6 million; people living at high altitudes with low oxygen tension will have more.
Lloyd’s lab partner is looking down into a test tube while he heats the contents by using a flame. Which action should Lloyd recommend to his partner if heating must continue?
Wear safety goggles while looking into the opening of the test tube.
Cover the opening of the test tube so that no materials can boil out of it.
Move the test tube so that the opening is pointing away from all students.
Put the test tube in a hot water bath so that no water can enter its opening.
The correct action that Lloyd should recommend to his partner who was looking down into the test tube if heating must continue would be to move the test tube so that the opening is pointing away from all students.
Wearing safety goggles (and looking directly down at the test tube) might not be enough to protect Lloyd's partner nor other students in case the content of the test tube splashes out.Covering the test tube might hinder any generated gas as a result of heating from escaping safely into the air and this might cause an explosion.Putting the test tube in a hot water bath so that water can enter its opening will definitely affect the reaction and prevent them from getting accurate results/observations.Hence, the most correct action would be for Lloyd's partner to move the test tube so that the opening is pointing away from all students.
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Answer:
Move the test tube so that the opening is pointing away from all students.
Using calculations of the numbers of chromosomes in the egg and the sperm, calculate the number of chromosomes that will be present in the mule formed by their fusion
Answer:
46 chromosome
Explanation:
No. Of chromosomes in Egg are : 23
No. Of chromosomes in Sperm are : 23
So when they fusion, give 46 chromosome
what is essence of trait theory of personality
Explanation:
The Trait Theory states that personalities are made up of distinct characteristics and qualities. These characteristics partially influence behavior.
Secondary: these traits are related to attitudes or dispositions in certain situations and experiences.
• I guess it's correct; if not then m sorry!
The one–toed horse of today steadily evolved from its five–toed ancestor. Which theory of evolution can explain this example?
Answer:
Horses have genes of having five toes, but as they grow, the other four don't develop. This is an example of patterning and post-patterning modes of evolution. Horses don't hunt preys, so they don't need claws. Horses develops muscles and "the hoof" for them to cover wide areas and long distances.
Explanation:
This is the correct answer.
what are the disorders of digestive system?
Answer:
The disordera of digestive system are :-
•Gastroesophageal Reflux Disease (GERD) Heartburn happens, but if it occurs regularly, you may need to be evaluated for GERD.
•Chronic Diarrhea.
•Chronic Constipation.
•Gastroenteritis.
•Ulcers.
•Hemorrhoids.
Explanation:
Hope it is helpful...
Answer:
Explanation:
Algunos problemas comunes incluyen acidez gástrica, cáncer, síndrome del intestino irritable e intolerancia a la lactosa. Otras enfermedades digestivas incluyen: Cálculos biliares, colecistitis y colangitis.
Ways in which biology, technology, and society are connected?
Digestion is ________. Group of answer choices Only mechanical Neither mechanical nor chemical Both mechanical and chemical Only chemical
Zhengzhou, the capital city of Henan province, was hit by heavy rain at 4 PM July 20. By 17 o'clock, rainfall per hour reached 201.9 mm, which has exceeded the extreme value of China's hourly rainfall capacity on land, resulting in poor drainage, severe waterlogged, economic losses, and enormous casualties. However, with the strong support of the Chinese government and all parts of the country, the people of Zhengzhou united as one to actively carry out self-rescue operations, relief, and rescue work. All these have achieved initial success. Guo Wengui, who is far away in New York, has been working in Zhengzhou for many years, and Yuda Building is just in Zhengzhou. He should have felt empathy for the heavy rain in Zhengzhou. But surprisingly, He turned a happy face to this. At the same time, Cheater Guo tried to describe natural disasters as human-made ones and encourage Guo investors to donate to Zhengzhou. There must be some triggers in this donation because of the duplicity and the inconsistency. Comrades, keep your eyes open! Don't be fooled!
Answer:
Hey friend
how can I help you
What statement best describes “biology”?
The naming of organisms
The study of natural selection
The science of life
The measurement of populations
Answer:
the science of life
Explanation:
The science of life
Which one of the following is an adaptive immune defense?
a. Intact skin
b. Fever
c. The inflammatory response
d. Proteins that kill invading microbes
e. Antibody production
Answer:
e. Antibody production
Explanation:
A cell can form beads on a string chromatin, but not solenoid fibers. Which molecule has likely been removed or mutated in this cell?
a. Η1
b. non-histone proteins
c. H2A
d. topoisomerase
The molecule which has likely been removed or mutated from a cell that can form beads on a string chromatin, but not solenoid fibers is: A. Η1
A cell can be defined as the fundamental functional, structural and smallest unit of life for all living organisms.
Genome editing refers to a high-tech process through which scientists remove (delete), replace or insert a deoxyribonucleic acid (DNA) sequence into the cells of a living organism such as an animal, bacterium, plant, etc., so as to improve on its physical and chemical conditions or correct a genetic disorder.
Chromatin can be defined as a complex form of deoxyribonucleic acid (DNA) and protein found in the cells of an eukaryotic organism.
In the classic model of chromatin, the beads simply refer to the nucleosomes while the string is simply the linker deoxyribonucleic acid (DNA).
Basically, the deoxyribonucleic acid (DNA) is wrapped around histone proteins to form nucleosomes and the beads on a string structure (euchromatin).
Furthermore, there exists a linker histone H1 in addition to core histones that reaches the entry or exit of the deoxyribonucleic acid (DNA) strand on the nucleosome.
In conclusion, a cell cannot form beads on solenoid fibers but it can form beads on a string chromatin because the H1 molecule has likely been removed or mutated in the cell.
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Who was the first person who
suggested that all particles can be
thought of as waves?
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❁Louis de BroglieWhat is the ratio of carbon, hydrogen, and oxygen in lipids?
Principles of building ecological towers. Advantages and disadvantages of ecological towers
Explanation:
in short answer,
advantages :
- more green more fresh air
- we are lack of rainforest these days, this is one way to taking care of greens by making it.
disadvantages :
- still require environmental damage for building the building itself, toxic waste and so on
- required $$$$ to buy the plants or seed itself
Which of the following cells is formed by meiosis?
A) A heart cell
B) A bacterial cell
C) A sperm cell
D) A fertilized egg
Answer:
C ) A sperm cell
Explanation:
These cells are our sex cells – sperm in males, eggs in females. During meiosis one cell divides twice to form four daughter cells. These four daughter cells only have half the number of chromosomes of the parent cell – they are haploid. Meiosis produces our sex cells
Which of the following correctly shows the sequence of organelles a protein would take if it were being exported from the cell?
(1 point)
O Ribosome → Smooth ER + Vesicle — Cell Membrane → Vesicle → Rough ER
Smooth ER Vesicle → Golgi apparatus → Rough ER → Vesicle → Nucleus
Ribosome > Vesicle - Rough ER → Vesicle → Golgi Apparatus → Cell Membrane
O Ribosome - Rough ER → Vesicle - Golgi Apparatus → Vesicle + Cell Membrane
The correct traffic of a protein that is exported from the cell is Ribosome - Rough ER → Vesicle - Golgi Apparatus → Vesicle + Cell Membrane
Proteins are synthesized (translated) in the ribosomes by decoding the messenger RNAs (mRNAs) sequences into the corresponding polypeptides.The system of endomembranes is a system of membranous components inside the cell which are fundamental for the synthesis, processing, and transport of proteins and lipids.This system includes the endoplasmic reticulum (ER), Golgi apparatus, and lysosomes. The vesicles are membrane-bound sacs that allow the exchange of membrane components among the components of the endomembrane system and with the cell membrane.Learn more in:
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Which statement best describes science?
A. Branch of knowledge that studies the natural world to gain knowledge and understanding.
B. Branch of knowledge that studies various societies to gain knowledge and understanding.
C. Branch of knowledge that studies interactions between living things to gain knowledge and understanding.
D. Branch of knowledge that studies pattern, quantity and arrangement to gain knowledge and understanding.
Answer:
branch of knowledge that studies the natural world to gain knowledge and understanding
The statement which best describes science is; Choice A; Branch of knowledge that studies the natural world to gain knowledge and understanding.
What is Science?Science, put simply is the branch of knowledge that studies the natural world to gain knowledge and understanding. This branch of knowledge can be further subdivided into
Physical sciencesBiological sciencesSocial sciences and othersRead more on science;
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What do marine veterinarians wear to work
Answer:
Clean, wrinkle-free, scrubs should be worn by all medical personnel with the occasional exception of veterinarians, who may need to wear business casual or professional business clothing underneath their white coats instead.
Explanation:
Do you favour or oppose the use of animal organs (such as hearts or kidneys) as transplants in humans when human organs are not available? Explain.
Are there any chromosomal abnormalities?
Answer:
chromosome number 21
What is photosynthesis
Answer:
The process by which green plants and some other organisms in the presence of sunlight to synthesize nutrients from carbon dioxide and water is called photosynthesis.
Please help fast please ASAP
Answer:
I can't see your questions
Why do you want to read research by scientists who used the scientific method?
Answer:
When conducting research, scientists use the scientific method to collect measurable, empirical evidence in an experiment related to a hypothesis (often in the form of an if/then statement), the results aiming to support or contradict a theory.
Lipoproteins contain cholesterol and triglycerides.
True
False
Answer:
it is true..they contain cholestrol and triglycerides.
What type of organisms have cells that carry out all the process is shown in the picture.
Answer:
Unicellular organisms
Which are predicted to happen in the case of a severe geomagnetic storm? Select the two correct answers. (1 point)
extra currents in the ground will disrupt power grid operations
extra currents in the ground will disrupt power grid operations
signals from radio navigation systems will be disrupted and be inaccurate
signals from radio navigation systems will be disrupted and be inaccurate
satellites will be forced to Earth's surface
satellites will be forced to Earth's surface
high-frequency radio waves used for radio communications will be blocked
Answer: extra currents in the ground will disrupt power grid operations and high-frequency radio waves used for radio communications will be blocked
Explanation:
In the case of a severe geomagnetic storm, extra currents on the ground will disrupt power grid operations and signals from radio navigation systems will be disrupted and be inaccurate.
A geomagnetic storm is caused by a CME (coronal mass ejection) from the sun that smacks against the earth's magnetic field and causes issues such as
Power grid failuresRadio signal disruptionsDamage to critical electronicsEtc.
Extra currents in the ground caused by the geomagnetic storm will disrupt power grid operations. We can also expect a disruption of all radio signals and communications due to changes in the ionosphere during the storm.
Satellites in the Earth's orbit would likely sustain critical damage and may be rendered inoperable, however, since satellites do not use technology to stay in orbit (this is done by the earth's own gravity) they will not fall to the surface, which is why this option is wrong. The final option is also wrong because high-frequency radio waves used for radio communications will be disrupted and unreliable but not blocked.
That is why In the case of a severe geomagnetic storm, power grid operations and signals from radio navigation systems will be disrupted and be inaccurate.
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Purpose of physical change
Answer:
Physical changes are changes affecting the form of a chemical substance, but not its chemical composition. Physical changes are used to separate mixtures into their component compounds, but can not usually be used to separate compounds into chemical elements or simpler compounds.
Explanation:
......
Rocks , soil trees water air and life .How do all the parts affect each other? Give some
examples
Explanation:
Answer:
For the complete encyclopedic entry with media resources, visit: http://www.nationalgeographic.org/encyclopedia/weathering/
Weathering describes the breaking down or dissolving of rocks and minerals on the surface of the Earth. Water, ice, acids, salts, plants, animals, and changes in temperature are all agents of weathering.
Once a rock has been broken down, a process called erosion transports the bits of rock and mineral away. No rock on Earth is hard enough to resist the forces of weathering and erosion. Together, these processes carved landmarks such as the Grand Canyon, in the U.S. state of Arizona. This massive canyon is 446 kilometers (277 miles) long, as much as 29 kilometers (18 miles) wide, and 1,600 meters (1 mile) deep.
Weathering and erosion constantly change the rocky landscape of Earth. Weathering wears away exposed surfaces over time. The length of exposure often contributes to how vulnerable a rock is to weathering. Rocks, such as lavas, that are quickly buried beneath other rocks are less vulnerable to weathering and erosion than rocks that are exposed to agents such as wind and water.
For example, certain kinds of air pollution increase the rate of weathering. Burning coal, natural gas, and petroleum releases chemicals such as nitrogen oxide and sulfur dioxide into the atmosphere. When these chemicals combine with sunlight and moisture, they change into acids. They then fall back to Earth as acid rain.
Why are some elements such as hydrogen, often found as diatomic molecules?
Answer:
Hydrogen chloride, carbon monoxide, or nitric oxide do all have diatomic molecules. In essence, what that means is that they are all gasses at room temperature. Because their atomic nuclei have its origin in different elements, scientists refer to them as heteronuclear.
Explanation:
Control variables HELP ME PLEASEEW 9th grade science btw