Answers
Answer:
Search up Periodic Table of elements number
Explanation:
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In order of increasing atomic number, the positions of first 20 elements in periodic table are:
Related Questions
State some changes in boys and girls during puberty
Answers
Answer:
Girls have a change in the way they act and behave, mood swings and changes in there body and growth. Boys have changes in growth and there voices might change.
Explanation:
There. Short answer sorry lol
Find at least 5 examples
of water in nature as a solid,
as a liquid, and as a gas
Answers
Answer:
ice, rain, snow, clouds, water vapor
Maturation refers to
A. Acquiring socially acceptable behaviors
B. Biological growth processes that influence development
C. Learned behavior patterns that accompany personal growth
D. The physical and sexual development of early adolescence
Answers
Bleeding from a small cut soon stops due to the release of
enzymes from
1) Platelets
2) Activated Antibodies
3) Hemoglobin
4) White blood cells
Answers
Answer: 4) white blood cells
Explanation:
The bleeding from a small cut soon stops due to the release of platelets. Hence, option 1 is the correct answer. These are cell fragments of megakaryocytes.
What is a blood clot?When there is a cut, blood comes out of that organ. To prevent blood loss, the body has certain mechanisms. This mechanism is called blood clotting.
In the blood, different cells are present. Red blood cells (RBC), white blood cells (WBC), and megakaryocytes are present in the blood. The red blood cells supply oxygen to the different tissues. It consists of hemoglobin. The white blood cells protect the body from pathogens. Eosinophils, neutrophils, basophils, monocytes, etc. are white blood cells ( WBC)
Megakaryocytes are the cells that form platelets. These platelets are cell fragments of megakaryocytes. When a cut occurs, these platelets come to the site along with other clotting factors such as fibrinogen to form a network-like structure. Due to this network, the blood cells can't come out, and blood loss stops.
Hence, option 1 is the correct answer as platelets prevents the blood loss. Other options are incorrect.
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During asexual reproduction, does the organism NEED to make a copy of two organisms or can it just be one?
Answers
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Question 4 of 66
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Biology I Mid-Year-Assessment (2020-2021)
Question: 1-4
Biological macromolecules are organized into four major categories. What type of macromolecule contains phosphorus as part of a phosphate group?
SC.912.L.18.1
lipids
proteins
nucleic acids
O carbohydrates
Answers
Answer: C nucleic acids
Explanation:
I took it on quizz already in my class so the answer C
Answer: nucleic acids
Explanation: i took the test
Which of the following organisms is likely to be in the lowest trophic level
of an ocean food chain?
O Leopard Seal
O Penguin
O Krill
O Plankton
O Fish
Answers
Answer: Plankton
Explanation:
Plankton are small organisms that exist in water and are too weak to swim against the currents of the ocean and the seas. This leads to them going wherever the currents take them. Plankton can be either plants or animals.
Of the organisms listed, they are on the lowest trophic level and provide a source of food to other organisms of different sizes ranging from krill to whales.
Explain the differences between DNA and RNA.
Answers
The DNA is a double-stranded molecule that has a long chain of nucleotides. The RNA is a single-stranded molecule which has a shorter chain of nucleotides. DNA replicates on its own, it is self-replicating. RNA does not replicate on its own.
Answer:
Explanation:
The difference between DNA and RNA is.....
DNA = Double-stranded
RNA = Singer-stranded
DNA = The sugar moiety is deoxy ribose
RNA = Ribose is the main sugar
DNA = Thymine is always there, but uracil is never found
RNA = Pyrimidine components differ. Thymine is never found
DNA = It follows Chargaffs rule (since it's double stranded)
RNA = Doesn't follow Chargaffs rule (since it's single stranded)
Hope this helped!
Which statement below best describes the function of the nucleus?
Answers:
a) Stores cells wastes and destructive enzymes
b) contains hereditary information and controls most of heredity and cell processes
c) directs cell division in animal cells
d) controls water pressure and stores wastes
Answers
Answer:
b) contains hereditary information and controls most of heredity and cell processes
it contains and protects DNA
Explanation:
The statement that best describes the function of the nucleus is that it contains hereditary information and controls most of the heredity and cell processes.
Cells are recognized as the building blocks that make up organisms. These cells are further made up of several structures that are well defined. Those well-defined forms of structures are referred to as organelles. The Endoplasmic reticulum, Mitochondria, and Nucleus are some of the examples of cells’ organelles.
The function and features of the nucleus are listed as follows:
The nucleus is described as the structure that is bounded by the membrane It is also considered the most noticeable organelle based on its function and size This organelle consists of the hereditary information of the particular cell and further helps in controlling the reproduction and growth of the cell.Thus, we can conclude that the statement “contains hereditary information and controls most of the heredity and cell processes” best explains the function of the nucleus.
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Which of the following is true of sewage treatment plants in the United States?
A
They release wastewater before solids are removed from the sewage.
B
They use stormwater runoff to assist in the treatment process
с
They are not designed to remove pharmaceutical chemicals from wastewater.
D
They have largely eliminated cultural eutrophication in Chesapeake Bay
E
They release wastewater that is not regulated by the Clean Water Act.
Answers
The statement 'they are not designed to remove pharmaceutical chemicals from wastewater' is TRUE of sewage treatment plants in the United States (Option c).
What is sewage treatment?Sewage treatment refers to the procedures used to remove pollutants and contaminated substances from wastewater.
The sewage treatment is usually performed by specific treatment plants capable of eliminating different types of impurities from wastewater.Subsequently, treated water can then be newly discharged into the environment (e.g., water bodies) for its reuse.In conclusion, the statement 'they are not designed to remove pharmaceutical chemicals from wastewater' is TRUE of sewage treatment plants in the United States (Option c).
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state two functions of a microscope
Answers
Answer:
what is microscope is a laboratory instrument used to examine objects that are too small to be seen by the naked eye.
FUNCTIONS : The microscope is one of the most important tools used in chemistry and biology. This instrument allows a scientist or doctor to magnify an object to look at it in detail. Many types of microscopes exist, allowing different levels of magnification and producing different types of images
Question 1 of 10
WORLD POPULATION GROWTH
20,000
10,000
5,000
World
2,000
Asia
1,000 Europe
Africa
Millions of people
500
209
United States,
Mexico
Canada, & Greenland
100
Central America,
s0 Caribbean Islands, &
South America
20
Oceania (Australia &
nearby islands in the Pacific)
10
2040
1980
2050
1950
1960
*970
Year
2000
2010
2020
2030
Based on the information in the graph, which region's population is currently
growing the least?
A. Australia
B. Europe
C. Asia
D. Africa
my
Answers
Answer:
The birth rate and death rate will be nearly equal
Explanation:
Why I know this because I just took the test
Based on the information in the graph Australia's population is currently growing the least.
How much has Australia's population grown in the last 50 years?Australia's population almost doubled in the past 50 years, from 13.1 million in 1971 to 25.7 million in 2021. But more remarkable is that this record population growth has exceeded all forecasts.
Why Australia is underpopulated?Australia has an average population density of 3.4 persons per square kilometre of total land area, which makes it one of the most sparsely populated countries in the world. This is generally attributed to the semi-arid and desert geography of much of the interior of the country.
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Which change is not likely to help a community reduce its use of fossil fuels?
O A. Giving citizens money to install solar panels on their homes
B. Lowering natural gas prices in the community
O C. Installing wind turbines in windy areas
D. Switching from coal to hydropower
Answers
Answer:
B
Explanation:
Lowering gas price's will only make the community use more fossil fuels
Identify where replication and transcription take place.
Answers
Answer:
well the DNA replication occurs in the nucleus. DNA transportation occurs in the nucleus. mRNA translation occurs at ribosomes.
Abe
is an interference in the channel of communication
a а. Source
b. Feedforward
C Feedback
d. Noise
Please select the best answer from the choices provided
A
B
C
D
Answers
Answer:
i think the answer is A source
Someone please help me
Answers
Describe: Fossil fuels are used in many ways. Using the Gizmo, describe the main use for each fuel.
Coal:
Petroleum:
Natural gas:
In each case, what is the end product of burning the fossil fuel, and where does it go?
Answers
Answer:
Coal:
Coal is primarily used as fuel to generate electric power
Petroleum:
heating and electricity generation, asphalt and road oil, and feedstocks for making the chemicals, plastics, and synthetic materials
Natural gas:
heating, cooking, and electricity generation.
it all end up in the atmosphere
Explanation:
The coal is burned and the heat given off is used to convert water into steam, which drives a turbine.
petroleum was formed from the remains of ancient marine organisms, such as plants, algae, and bacteria.
Like oil, natural gas is a product of decomposed organic matter, typically from ancient marine microorganisms, deposited over the past 550 million years. This organic material mixed with mud, silt, and sand on the sea floor, gradually becoming buried over time.
Coal and natural gas are burned in power plants to boil water. Steam from boiling water converts turbines into electricity. Carbon dioxide from burning fuel is released into the atmosphere.
This is about description of fossil fuels which are simply fuels that are formed from natural processes.
The uses and end products of fossil fuels are talked about in the explanations below;
1) (I) The primary use of the fossil fuel named coal is to generate electricity.ii) When coal is burnt, it produces a very high heat. This heat is so high that it converts water into high-pressure steam. What drives a turbine is a high pressure steam and this drive makes the turbine to produce electricity.
2) I) Petroleum products are used to set vehicles in motion, for asphalt on roads, production of electricity and heating of buildings.II) when petroleum is burnt to create energy, it produces high amount of carbon dioxide and other toxic gases into the atmosphere that can cause greenhouse effect.
3) I) Natural gas is used primarily as a source of energy for cooking, generating heat and for providing electricity.II) When it undergoes combustion is produces large amount of carbon dioxide and nitrogen oxides into the atmosphere.
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If you cut your knee, pus, which is caused by _____, may form.
blood cells losing their hemoglobin
medicinal material excreted by macrophages
pathogens trying to infect the area
the death of macrophages
Answers
Answer:
The last one
Explanation:
A coverslip should be used for preparing a
1.
frog for dissection
2.
solution of iodine for food testing
3.
wet mount of elodea (a simple plant)
4.
test to determine the pH of a solution
Answers
Answer:
3
Explanation:
wet mount of elodea( a simple plant)
The chemical reaction that represents photosynthesis is 6 H20 + 6 CO2 → C6H12O6 +6
O2. What are the reactants?
Answers
Answer:
The chemical equation for photosynthesis is 6CO2+6H2O→C6H12O6+6O2. 6CO2+6H2O→C6H12O6+6O2. In plants, the process of photosynthesis takes place in the mesophyll of the leaves, inside the chloroplasts. Chloroplasts contain disc-shaped structures called thylakoids, which contain the pigment chlorophyll.
Explanation:
Plants and animals can cause physical weathering.
Answers
Answer:
True
Explanation:
Tree roots that grow into crevices and small animals that burrow can cause physical weathering.
, where should the capillaries and lymphatic vessels be placed tomaximize the absorption of nutrients from food
Answers
Answer:
They should be placed in the small and large intestine.
Explanation:
The small and large intestine is the part of our digestive system that absorbs the nutrients from food. Previous to this step, the food went through the mouth, the esophagus, and the stomach. In those places, it was processed so that the intestines could absorb the nutrients from the food easily/
For nutrients to be absorbed, they should be in stretch contact with the intestines' walls where the smallest arteries, which are called capillaries, are present and will take the nutrients into its interior where the blood is. Also, the intestines have lymphatic vessels. These ones will protect our body from any antigen since they are part of our immune system.
timeline of the discovery of Uranus
Answers
13, 1781: British astronomer William Herschel discovers Uranus—the first new planet discovered since ancient times - while searching for faint stars. 1787-1851: Four Uranian moons are discovered and named Titania, Oberon, Ariel and Umbriel. 1948: Another moon, Miranda, is discovered. Mar.
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Marine science notes what is marine science
Answers
Answer:
The study of oceans and their life.
Explanation:
The study of oceans, including seawater, the ocean floor, and marine plants and animals.
14. A(n)
__ is when a single base pair is altered.
substitution
point mutation
deletion
insertion
Answers
Answer:
point mutation
Explanation:
In chemical reactions atoms are
Neutralized
Destroyed
Created
Rearranged
Answers
Answer: Rearranged
Explanation:
In chemical reactions, atoms cannot be destroyed, created, or neutralized, and that is why the only correct answer, in this case, is that atoms in chemical reactions can be rearranged.
They aren't destroyed and they can never be destroyed and also they cannot be created because of the law of conservation of energy in chemical reactions.
This law is considering that ''A matter cannot be created nor destroyed, it can only be formed in one way or the other.''
Which of the following statements about prokaryotic cells is correct?
A) They reproduce asexually through a form of cell division called binary fission.
B) They contain multiple chromosomes floating in the cytoplasm.
C) They have a single DNA strand within a membrane-bound nucleus.
D) They reproduce sexually by exchanging genetic information during conjugation.
Answers
Answer:
A) They reproduce asexually through a form of cell division called binary fission.
Explanation:
It's similar to mitosis in eukaryotic cells
Looking at the map below. predict what type of boundary is present and the resulting features of the boundary at the Philippine Plate and the Eurasian Plate
Eurasian Plate
Answers
Answer:
The answer is A - Convergent boundary resulting in earthquakes and volcanic activity
Explanation:
In map, Convergent boundary resulting in earthquakes and volcanic activity.
What do you mean by convergent boundary?A convergent boundary is an area on Earth where two or more lithospheric plates collide. One plate eventually slides beneath the other, a process known as subduction.
The subduction zone can be defined by a plane where many earthquakes occur, called the Wadati–Benioff zone. A convergent boundary is an area on Earth where two or more lithospheric plates collide.
Another form of convergent boundary is a collision where two continental plates meet head-on. Since neither plate is stronger than the other, they crumple and are pushed up.
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Someone please help me
Answers
Answer:
mass and volume
Explanation:
Matter is anything that has mass and takes up space
Which line
represents
constant speed?
Answers
Answer:
b
Explanation: