10(b)(ii). Faith wants to separate water and salt from a salt solution in a
beaker. Choose the method shown in Diagram 10.1 which is suitable to be
used. Explain.
Why does ice become less dense than water?
Which of the following best defines a gene pool?
a. the sum of all genetic traits in a population’s individuals at a given time
b. any movement of genes from one population to another
c. any movement of organisms from one environment to another
d. the random change in the frequency of an allele in a population
The correct answer is : A) The sum of all genetic traits in a population's individuals at a given time.
Answer:
A
Explanation:
Just took the test
8(b)(i). Diagram 8.2 shows part of the Periodic Table. State the type of
element for P. *
Answer:
Phosphorus
Phosphorus is a chemical element with the symbol P and atomic number 15. Elemental phosphorus exists in two major forms, white phosphorus and red phosphorus, but because it is highly reactive, phosphorus is never found as a free element on Earth.
Explanation:
Brainliest?
How do airplanes stay in the air?
Answer:A plane's engines are designed to move it forward at high speed. That makes air flow rapidly over the wings, which throw the air down toward the ground, generating an upward force called lift that overcomes the plane's weight and holds it in the sky. ... The wings force the air downward and that pushes the plane upward.
Explanation:
A plane's engines are designed to move it forward at high speed. That makes air flow rapidly over the wings, which throw the air down toward the ground, generating an upward force called lift that overcomes the plane's weight and holds it in the sky. ... The wings force the air downward and that pushes the plane upward
Which statement best compares the amount of fossil fuels formed each year to the amount used each year? The amount of fossil fuels formed is exactly the same as the amount used. The amount of fossil fuels formed is approximately the same as the amount used. The amount of fossil fuels formed is much less than the amount used. The amount of fossil fuels formed is greater than the amount used.
Answer:
The amount of fossil fuels formed is much less than the amount used.
Explanation:
Fossil fuels, which include petroleum, coal, natural gas etc are an example of non-renewable sources of energy. They are termed non-renewable because they are sources that gets exhausted quickly without replenishment.
One of the characteristics of non-renewable sources of energy is that they get exhausted faster than they can be produced. Hence, regarding fossil fuels as an example of non-renewable source of energy, this means that the amount of fossil fuels formed is much less than the amount used.
Answer:
it tis C
Explanation:
The area where the river and ocean meet and form a fan shape is called?
A Water Shed
A River Basin
A Wetland
A Delta
HELP ME PLEASEEEEE
In 2016, the U.S. Department of Agriculture reports that 18,272,100,000 pounds of beef were consumed by people living in the United States. If the population of the United States was 323,400,000, what was the PER CAPITA consumption of beef for 2016?
Answer:
external secondary data
Explanation:
I'm not sure if there are picks
What process do plants use to remove carbon dioxide from the air?
nitrogen cycle
water cycle
photosynthesis
respiration
Answer:
Photosynthesis
Explanation:
What is the most likely outdoor temperature of the scene in the photo?
A. -5K
OB. 30 K
C. 30°C
OD. -5°C
SUBMIT
Answer:it’s d
Explanation:
Answer:
D
Explanation:
I’m a genius
explain why soil micro-organisms should break down plant and animal residues
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Microbial Soil Organic Matter Decomposition
Organic matter decomposition serves two functions for the microorganisms, providing energy for growth and suppling carbon for the formation of new cells. ... Dead plant residues and plant nutrients become food for the microbes in the soil.
Microbes thrive underneath no-till conditions and winter cover crops. cowl plants and manure may be used to feed soil microbes and recycle soil vitamins. As soil microbes decompose organic residues, they slowly release vitamins lower back into the soil for the winter cowl vegetation or for the preceding crop.
Why soil microorganisms should break down plant and animal residues?
By-products from growing roots and plant residues feed soil organisms. In turn, soil organisms support plant health as they decompose organic matter, cycle nutrients, enhance soil structure and control the populations of soil organisms, both beneficial and harmful (pests and pathogens) in terms of crop productivity.
What's the significance of microorganisms within the soil what's their role?Useful soil microbes carry out fundamental capabilities which include nutrient cycling, breaking down crop residues, and stimulating plant boom. at the same time as the position of microbes to preserve soil fitness and make contributions to crop performance is clear, the soil organic factor is extremely difficult to take a look at and control.
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What makes up cell membranes and is used to create hormones?
Answer:
Lipids create a unique type of polymer, known for being a key component of cell membranes and hormones. Where most polymers are long chains of identical, repeating carbon-containing molecules known as monomers, lipid polymers contain an additional, nonidentical molecule attached to each monomer chain.
Explanation:
Which is not true about mitosis A. The chromosomes in the daughter cells are half the number from the parent cell B. The chromosomes in the daughter cells are the same number as the parent cell C. Each nuclei is identical to the parent nucleus D. The four main stages of mitosis are prophase, metaphase, anaphase, and telophase
The chromosomes in the daughter cells are half the number from the parent cell. So, the correct option is (A).
What is Mitosis?Mitosis is defined as the part of the cell cycle in which the duplicated chromosomes are divided into two new nuclei. Cell division by mitosis gives rise to genetically identical cells in which the total number of chromosomes remains the same. Hence, it is also known as Equilateral Partition.
The phases involved in the mitosis are :-
ProphasePrometaphaseMetaphaseAnaphaseTelophase.Mitosis occurs in somatic cells which occurs in all types of cells that are not involved in the production of gametes. Each mitotic division contains one copy of each chromosome, thus a complete set of chromosomes is found in the nucleus of each new cell.
Thus, the chromosomes in the daughter cells are half the number from the parent cell. So, the correct option is (A).
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Explain the relationship among
homeostasis, defective mitochondria, and the
symptoms caused by LHON.
Answer:
There is an important relationship among homeostasis, defective mitochondria, and the symptoms caused by LHON.
Explanation:
There is a great relationship among homeostasis, defective mitochondria and the symptoms caused by LHON because defective mitochondria disturbs the homeostasis in the body. If mitochondria works properly, homeostasis will be maintained whereas if there is any defect occurs in the mitochondria then the whole homeostasis will be adversely affected because mitochondria is the powerhouse of the cell responsible for the production of energy for the cell. Symptoms occurs due to Leber's hereditary optic neuropathy (LHON) also effected the state of equilibrium in the body.
The relationship among homeostasis, defective mitochondria and the symptoms caused by LHON is the following:
The power center of the cell, the mitochondria are also involved in homeostasis, the maintenance of a stable internal environment even in the face of variations in the external environment.
Mitochondrial diseases can be caused by inherited mutations in mitochondrial DNA or defects in the proteins responsible for regulating mitochondrial division, affecting the body's homeostasis.
Leber's Hereditary Optic Neuropathy (LHON) is the first disease associated with a mutation in the mitochondrial genome, specifically it produces the specific degradation of neurons involved in sending information from the eye to the brain (RGC).This disease is caused almost entirely by three mutations in mitochondrial DNA (mtDNA).The first symptoms are blurred vision, with unilateral or bilateral onset, which over time affects and / or worsens in both eyes, with loss of visual acuity and color vision.Vision loss is painless and is caused by degeneration of the optic nerve, specifically of the retinal ganglion cells (RGC).
Therefore, we can conclude that LHON is a disease associated with a mutation in the mitochondrial genome affecting the body's homeostasis.
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Which statement is NOT true about fluids?
A. all can flow
B. liquid and gases are included
C. some take the shape of their container
D.particles move easily past each other
Answer:
option D is correct
Explanation:
The statement which is not true about fluids is particles move easily past each other.
What do you mean by Fluids?Fluids may be defined as any liquid or gas or generally any material that experiences a continuous change in shape when subjected to any object.
The properties of fluids indicate that all fluids can flow depending upon their densities. Some take the shape of their container due to fluidity. Fluids comprise liquid and gases.
Therefore, the statement which is not true about fluids is particles move easily past each other.
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If a strand of DNA has 45% A, what percent will be C?
Answer:
55%
Explanation:
Answer:
[tex]\boxed {\boxed {\sf C=5\%}}[/tex]
Explanation:
There is a method to calculating base percentages known as Chargaff's Rule. It states:
[tex]A+T+G+C=100\%[/tex]
We know the DNA has 45% Adenine or A.
Adenine always pairs equally with Thymine. In other words, the percentage of adenine equals the percentage of thymine (45% Thymine or T).
[tex]45\%+45\%+C+G=100\%[/tex]
[tex]90\%+C+G=100\%[/tex]
Subtract 90% from both sides.
[tex]90\%-90\%+C+G=100\%-90\%[/tex]
[tex]C+G=10\%[/tex]
Cytosine(C) and Guanine(G) pair equally and their percentages will be equal. We can divide 10% by 2.
[tex]C+G=10\% /2[/tex]
[tex]C/G=5\%[/tex]
The percentage of Cytosine or C is 5 percent.
What do you think we would see if we looked at that same portion of the sky with an even more powerful telescope that is in space?
1980g = __kg
A. 198 B.1.98 C.19800 D.19.8
Answer:
1.98 kg
Explanation:
Why do different individuals of the same species have different traits?
OA. Individuals have differences in their genes that result in protein variations.
OB. Individuals have proteins that produce genes with completely different functions from other individuals.
OC. Individuals have different proteins that cause variations among their genes.
OD. Individuals have different genes that produce proteins with completely different functions from other individuals.
answer : a
explanation : a species shares ALMOST all of the DNA with each other with just small differences
Different individuals of the same species have different traits because individuals have differences in their genes that result in protein variation. Hence, option A is correct regarding variation.
Why do individuals of different species exhibit different characteristics?
The species is a group of individuals that can reproduce among themselves and can produce fertile offspring. Individuals of a species have genetic variation among them as they are formed by the process of meiosis.
In meiosis, genes cross over and recombination takes place, resulting in the formation of offspring that show some variation from their parents. These characters or traits are encoded in the gene. When these are expressed in the process of translation, the variation is seen.
This genetic variation doesn't make them reproductively isolated. Example: In humans, there are variations based upon the skin color, face size, height, etc. The variation is seen in genes among individuals but not genes are different.
Hence, different individuals of the same species have different traits because individuals have differences in their genes that result in protein variation. Hence, option A is correct regarding variation.
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A mixture in which different materials are easily identified is____
Answer:
heterogenous mixture
Explanation:
The image of a slide of onion epithelial tissue observed with the low-power objective of a
compound microscope appears light and somewhat fuzzy. Which parts of the microscope should be used to improve the focus?
coarse adjustment and ocular
fine adjustment and diaphragm
ocular and nosepiece
diaphragm and 40x objective
Od
Answer:
Fine adjustment and diaphragm
Explanation:
Why are cells are able to harvest about 34% of the available stored potential energy in a glucose molecule? What happens to the other 66%?
Answer:
Why are cells are able to harvest about 34% of the available stored potential energy in a glucose molecule is because of the process of cellular respiration. And what happens to the other 66% is that it's used to make water from hydrogen ions and oxygen that converted to heat and used directly for energy to store as fat
Explanation:
SOMEONE I NEED HELP!! I'M STUCK 30 POINTS!!!!!
PART A
An advantage of mitosis is the result of genetically____________.
A. Different
B.Identical
PART B
cells being reproduced
A. slowly
B. Quickly
In the middle of the night you are awakened by hunger pains. You proceed to get up and go to the kitchen to have a couple of cookies and a glass of milk. Satisfied you go back to bed content. Explain in detail what organs, and organ systems are involved in completing that task. Describe the physical and chemical digestive processes as well as the delivery of the nutrients to the cells all around the body. Be sure to include how the systems interact.
help plz lol
Answer:
Overview of answer:
-First, your digestive system is involved in the hunger pains you feel because your stomach is empty and your body needs more energy.
(-Since you are alive and breathing, your respiratory system is also involved.)
-Getting up involved the muscular and skeletal systems, which allow movement and bodily structure, and the nervous system, which commands the muscles and bones to move.
-Eating and drinking involves the digestive system again as saliva and enzymes break down the food travelling from the mouth to the stomach.
Explanation:
I think that is all involved but there may be more depending on how you look at it. Hope this helps! :)
Digestive system is involved in the hunger pains you feel because your stomach is empty and your body needs more energy.
What are the functions of digestive system?The human digestive system consists of the gastrointestinal tract plus the accessory organs of digestion. Digestion involves the breakdown of food into smaller and smaller components.
he digestive system breaks down food into nutrients such as carbohydrates, fats and proteins.
They can then be absorbed into the bloodstream so the body can use them for energy, growth and repair. Unused materials are discarded as faeces.
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which of the following correctly describes a reaction that forms a disaccharide from two monosaccharides?
Answer Options:
a. glycogen + fructose = maltose
b. galactose + glucose = lactose
c. glucose + sucrose = fructose
d. maltose + lactose = cellulose
Answer:
b. galactose + glucose = lactose
Explanation:
Monosaccharides are single units. Disaccharides are molecules of two monosaccharides joined together.
Examples of monosaccharides include glucose, fructose, and galactose.
Examples of disaccharides include lactose, maltose, and sucrose.
The only example that shows this is b.
Choose the correct phrase to describe how the waves behave as they reach point A and B.
Answer:
The answer is Epicenter
Explanation:
Answer:
epicenter is the correct answer
Explanation:
Plz mark brainliest if helps
How Big Is DNA? PLEASE
Answer:
22 to 26 angstroms wide (2.2 to 2.6 nanometres), and one nucleotide unit measured 3.3 Å (0.33 nm) long.
Explanation:
Which statement is true about Earth's poles?
A. Only the north magnetic and geographic poles wander.
B. Only the magnetic poles wander
C. The geographic poles both wander
D. The magnetic poles stay in the same place.
Answer: C: They both wander
Explanation: A P E X
What two electron carrying particles does the electron transport chain use to get the energy it needs to
make ATP?
in a prokaryotic cell most ribosomes are
Answer:
floating freely in the cytoplasm.
Explanation: