Answer:
B
Explanation:
How do tiny atoms bond together to form bigger substances , and how are these substances important for life ?
Answer:
The detailed answer to this question is found in the explanation section.
Explanation:
Life is generally made up of matter, which is referred to as anything that has mass and occupies space. Matter is composed of elements such as carbon, hydrogen, oxygen etc, which in turn constitutes the smallest indivisible unit of an element called ATOMS.
Atoms are chemically bonded together to make up the elements in molecules and compounds. These compounds and substances are contained in the basic unit of life called CELLS, which play a pivotal part in the sustenance of life. For example, the enzymes and hormones that bring about physiological responses in our body are made up of protein molecules. These protein molecules are similarly composed of chemical elements such as carbon, oxygen, hydrogen, nitrogen etc, whose building blocks are atoms.
In a nutshell, all LIFE characteristics are made up of matter which possess atomic particles that are chemically bonded together to form substances that hold life together.
Please answer this scientific question quickly
Answer:
(C). if the source is being paid to endorse a product .
A student hypothesized that EC growth might be affected by the DNA from circulating erythrocytes. Is this student’s hypothesis reasonable?
Answer: The options are not given, here are the options.
A) No the DNA in circulating erythrocytes ins needed to help transport O2 through the capillaries
B) No circulating erythrocytes contain DNA.
C) Yes DNA is responsible for cell division in most cells
D) Yes circulating erythrocytes carry DNA nutrients through the capillaries
The correct option is B.
No circulating erythrocytes contain DNA.
Explanation:
Erythrocytes or red blood cells is a biconcave disc that contain haemoglobin which help to carry oxygenated blood in the body.
Circulating erythrocytes do not contain dna because they lack nuclei and organelles, cannot synthesize any RNA, therefore cannot divide and have limited repair capabilities.
Because they cannot carryout protein synthesis, no virus can evolve and invade the red blood cells.
how many different types of scientific investigations are there
Answer:
There are 3 types of scientific investigations.
Explanation:
Types of Scientific Investigations
Controlled Investigation.
Field Investigation.
Design Investigation.
Secondary Research Investigation.
Answer:
Explanation:
there are three types :
Scientists use three types of investigations to research and develop explanations for events in the nature: descriptive investigation, comparative investigation, and experimental investigation.
hope this helps you
What would happen in an ecosystem without primary consumers? (3 points) a The populations of producers would increase. b The populations of decomposers would decrease. c The populations of omnivores would increase. d The populations of carnivores would increase.
Answer:
the answer is A
Explanation:
without the herbivores/primary consumers to eat them, the plants/producer population would increase.
Answer:
A
Explanation:
just got it correct on the question
Which statements are true?
Check all that apply.
A is in Quadrant I.
B is on the x-axis.
C is in Quadrant I.
D is in Quadrant III.
E is on the x-axis.
F is on the x-axis.
G is on the y-axis.
Answer:
A, D, F and G
Explanation:
A, D, F and G
Answer:
A, D, F and G are the correct answers!
Hope this helps
what happens if the polarity of neuron membrane is disturbed
Answer:
Neuronal polarity refers to the asymmetrical distribution of cellular components within a neuron. ... During neuronal polarization, a group of molecules work in concert to regulate the dynamics of the cytoskeleton. The cytoskeleton dynamics is essential for neurite extension and axon and dendrite formation.
Explanation : Neuronal polarity refers to the asymmetrical distribution of cellular components within a neuron. ... During neuronal polarization, a group of molecules work in concert to regulate the dynamics of the cytoskeleton. The cytoskeleton dynamics is essential for neurite extension and axon and dendrite formation.
Which of the following is a characteristic of all rocks?
A) They all have the same texture.
B) They all look alike.
C) They all have the same color.
D) They are all made of one or more mineral
answer:
Rocks are classified according to characteristics such as mineral and chemical composition, permeability, texture of the constituent particles, and particle size. These physical properties are the result of the processes that formed the rocks.
The characteristic that is present in all rocks is they are all made of one or more minerals. The correct option is D.
What are rocks?Rocks on the big stones are made up of an accumulation of small stones and San materials. They are made up of one or more minerals that join together.
There are different types of rocks that are differentiated by the process of their formation. The types of rocks are igneous rocks, sedimentary rocks, and metamorphic rocks.
Now, sedimentary rocks are formed by the deposit of minerals and other materials. Metamorphic rocks are formed when the pressure and heat from the Earth turned igneous rocks into other rocks and that is called metamorphic rock.
Igneous rocks are formed by the cooling down of hot Lava and Magma that comes out of volcanoes.
Thus, the correct option is D) They are all made of one or more minerals.
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Meteorology studies?
Answer:
Meteorology is the scientific study of the atmosphere that focuses on weather processes and forecasting.
Answer:
meteorology is the study of Earths atmosphere
Explanation:
Gregor Mendel demonstrated that traits are passed from parents to offspring independently of one another under all circumstances that he tested. All other genetics researchers have observed this as well. Based on this information, the statement can be made that “traits are passed from parents to offspring independently of one another.” Which describes the statement of fact? a law a hypothesis a theory an observation
The answer is A. A law
Explanation:
The fact "traits are passed from parents to offspring" has been scientifically proven not only by Mendel but by many other scientists. Additionally, these experiments showed this phenomenon always occurs. In this context, this statement is considered a law, which is a statement that describes an event or phenomenon that always happens and has been proven through experiments. Moreover, this is classified as a law rather than a theory because it only describes a phenomenon of genetics but does not explain it.
Answer:
answer is (a) law
Explanation:
taking the test rn .-.
In a nutrient medium that lacks histidine, a thin layer of agar containing around 10^9 Salmonella typhimurium histidine auxotroph produces around 13 colonies over a two day incubation period at 37 degrees centigrade. How do these colonies arise in the absence of histidine? The experiment is repeated in the presence of 0.4 micrograms of 2-aminoanthracene. The number of colonies the number of colonies produced over 2 days exceeds 10,000. What does this indicate about 2- anthracene? What can you surmise about its carcinogenicity?
Consider the plant phenotypes: RR is red (dominant) and WW is white (dominant) What type of inheritance will be shown where the alleles from each
parent blend together in the expressed phenotype of the offspring? (1 point)
O codominance
O epistatis
O intermediate inheritance
O recessive inheritance
Answer:
codominance
Explanation:
A form of inheritance in which the two alleles representing a gene are equally dominant and contributes equally to the phenotype of individuals is referred to as codominance inheritance.
In codominance, the two alleles are equally dominant with the effects of one allele not being able to suppress the effects of the other. Both contribute equally to the protein that represents the gene in the offspring.
the leg of a dash are long and strong that keep their body away from the hot sand
My answer is an ostrich,a camel,and a fennec fox.
But the Fennec fox is the suitable answer...
1/4 divide 7/3 what is the answer
[tex]\frac{1}{4}:\frac{7}{3}=\\ \\=\frac{1}{4}*\frac{3}{7}\\ \\=\frac{1*3}{4*7}\\ \\=\frac{3}{28}[/tex]
12. Being early June, it is currently late spring in the northern temperate zone. What season is it in the
southern temperate zone?
a) early spring b) late fall
c) early fall
d) summer
e) late spring
Answer:
B late fall
Explanation:
It just the exact opposite on the southern temperate zone to the northern. Late spring would be late fall. Northern is going into summer as Southern is going into winter.
One of the characteristics of which type of epithelial tissue is that of being able to readily diffuse material through it, such as occurs in alveoli?
Answer: The options are not given, here are the options.
A. Stratified columinar
B.Simple columnar
c. Stratified squamousd.
D. Simple squamous
The correct ANS Is D.
Simple squamous
Explanation:
Simply squamous epithelium is a type of epithelium cells that is found in the inner surface of blood vessels, alveoli and has contact with basal membrane.
This type of epithelium cells have the ability to diffuse material or substances through membranes because it is permeable i.e it has pores or openings that allow liquid or substances to pass through it.
An isotope of sodium (Na) has a mass number of 22 and an atomic number of 11. How many neutrons does it have?
Answer:
11
Explanation:
Neutron number=Atomic mass-atomic number
=22-11
=11
11 because Neutron number=Atomic mass-atomic number
=22-11
=11
Where is the atomic number?The periodic table displays all of the known elements and is arranged in order of increasing atomic number. In this table, an element's atomic number is indicated above the elemental symbol. Hydrogen, at the upper left of the table, has an atomic number of 1. Every hydrogen atom has one proton in its nucleus.
What is the electron number?The number of electrons in an atom is equal to the atomic number of an element, for neutrally charged species. This means the number of electrons and the number of protons in an element are equal. Therefore, the number of electrons in oxygen is 8
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hydrogen and oxygen come pouring out. it drips and it dribbles and it comes from a spout
Answer:
Water
Explanation:
This looks like a proverbial question, so I'll try and answer it as best as I can
Th mixture of 'hydrogen and oxygen came pouring out' to give water. Water is a liquid that 'drips and dribbles and it comes poring from a spout'
The question is talking about the reaction between hydrogen and oxygen to give water; a form of liquid as the by-product.
The reaction involves one atom of oxygen reacting with two atoms of hydrogen with an hydrogen bonding in-between to give a molecule of water.
Also note that a spout is a stream of liquid issuing from somewhere with great force. So the answer is water.
Which term describes a series of steps designed to help you solve problems and
answer questions?
observation
scientific method
experiment
hypothesis
Answer:
scientific method
Explanation:
The primary aim of research and scientific experiments conducted by scientists is to solve problems and provide factual answers to them. In order to accomplish this, a procedure called scientific method is employed.
Scientific method refers to a step-by-step procedure used to test the validity of an hypothesis. Scientific method uses the following steps;
1) Make observation
2) Ask a question
3) form an hypotheses.
4) perform an experiment
5) Analyze the results
Hence, SCIENTIFIC METHOD describes a series of steps designed to answer questions.
Answer:
b
Explanation:
the most common source of osteomyelitis is an infection that migrates via the bloodstream. direct invasion from a fracture. surgical contamination. a joint prosthesis.
Answer:
The correct answer is ''an infection that migrates via the bloodstream.''
Explanation:
An infection is the invasion of pathogenic germs or microorganisms that reproduce and multiply in the body causing disease. Bones, like any other organ or tissue in the human body, can become infected. Osteomyelitis is a bone infection caused by bacteria, mainly Staphylococcus aureus, although in some cases it can also be caused by fungi. The infection can start in another part of the body and spread to the bone through the bloodstream. In this case, it usually occurs at the ends of the leg and arm bones in children and in the spinal column (vertebrae) in adults, especially the elderly.
the process by which the surface of a microorganism is covered with antibodies and complement rendering it more likely to be
Answer:
Rendering more likely to be phagocysized is
OPSONIZATION.
Explanation:
Opsonization is a process in immune system where antibodies in body and opsonin , a components in the body have the ability to recognise antigens or invading particles and coat them on phagocytic cells.
Opsonization take place when immunoglobulin molecules bind to some epitopes on surface antigens and become engulfed by phagocytes.
In the lock-and-key model of enzyme action, the enzyme active site is thought of as ________.
Answer:
Rigid and non flexible surface
Explanation:
Enzymes are catalyst that speeds up rate of chemical reactions, they bind to a substrate which are known as reactant substrate to speed up rate of chemical reaction and to unlock the key.
The enzyme is said to be rigid and non flexible fitting perfectly to the surface of the substrate where the reaction takes place. Fitting perfectly enable the enzyme to perform its action on the substrate unlocking the key and activating the action in the molecule.
In a certain breed of plants, dark green is determined by the dominant gene 'G' and light green is determined by the recessive gene 'g'. The heterozygotes show 75% penetrance. If the parental cross GG x gg was made, how many of each of the expected phenotypes will be observed in a population of 400 F2 plants
Answer:
The answer is 300.
Explanation:
When we cross GG and gg, 100% of the offspring will be heterozygous. If the heterozygotes show 75% penetrance meaning that there is a 75% probability that the plant that has the G gene will actually show it in it's phenotype.
So that means that 75% of the offspring should have dark green color, which means that 300 plants will have the expected phenotype and 100 will not.
I hope this answer helps.
Soluble proteins can enter which organelle in their folded conformation? A. chloroplast B. endoplasmic reticulum C. golgi apparatus D. mitochondrion E. ribosome
Answer: Golgi aparathus.
Explanation:
Golgi aparathus is an organelle that is found in eukaryotic cells. Soluble protein can enter Golgi aparathus in folded conformation because the golgi aparathus is a complex vessicles and folded membrane that help to package, transport and modify proteins and deliver them to the right location they will be needed.
Soluble proteins can enter the golgi apparatus in their folded conformation
Golgi apparatusGolgi apparatus is a membrane-bound organelle found in eukaryotic cells that is composed of a series of flattened, stacked pouches called cisternae.
It is located in the cytoplasm next to the endoplasmic reticulum and near the cell nucleus.
Functions of the golgi apparatusThe Golgi apparatus is responsible for the following functions:
transporting,modifying, andpackaging proteins synthesized in the endoplasmic and lipids into vesicles for delivery to target sites or destinations.Proteins in their native or folded conformation enter the golgi apparatus and are then packaged for delivery to sites where they are needed.
Therefore, soluble proteins can the golgi apparatus in their folded conformation
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Which factor in the Southwestern desert ecosystem is abiotic?
Answer: Abiotic factors are all non-living factors in an organism's environment. Precipitation, water availability, sunlight, and temperature are all abiotic factors. Deserts are characterized by their lack of rainfall.
Explanation:
Hope this helps^^
You want to look at the connection between ribonucleotide reductase and thymidylate synthase. You carry out an in vitro experiment (in a test tube) with wild-type ribonucleotide reductase and thymidylate synthase along with any additional enzymes needed. You also include in the test tube ribonucleotides (ATP, CDP, UDP, GDP, and ADP), 7,8-dihydrofolate, NADPH, serine, and an inhibitor of thymidylate synthase. List the diphosphate deoxyribonucleotides that will be produced as a result of this in vitro experiment. Discuss the effects of inhibiting the thymidylate synthase on the activity of the ribonucleotide reductase.
Answer:
Under the vitro experiment; Deoxy ribo adenosine diphosphate, deoxy riboflavin gwanosine di phosphate, deoxyribo cytosine diphosphate as well as deoxyribouridine diphosphate are all formed.
The inhibitor of thymidylate synthase block the activity of this enzyme which would otherwise convert deoxyribo UDP to deoxyribo thymidine diphosphate.
Blocking this enzyme lowers down the thymidine diphosphate nucleotide concentration which interrupt the DNA replication. The ribonucleotide reductase is responsible for the reduction of respective nucleotides into their deoxyribonucleic forms which can be considered as precursors for DNA synthesis.
Deoxy Uridine diphosphare is also a product of this enzyme which is further modified by thymidylate synthase twhich converts into deoxy thymedine diphosphate. But this convertion is blocked in vitro experiment which leads to one nucleotide scarce for DNA replication.
the gluteus maximus is located superior to which muscle
Answer:
piriformis muscle is below the gluteus maximus
The gluteus maximus is located superior to the gastrocnemius muscle.
The gluteus maximus is the most superficial gluteal muscle and the main extensor muscle of the hip. The group of the gluteal muscles includes the gluteus maximus, gluteus medius, gluteus minimus and tensor fasciae latae. The gluteus maximus is a thick muscle that has a quadrangular shape. It is responsible for the maintenance of keeping the upper body erect.The gastrocnemius muscle, also known as leg triceps, is an important muscle that is required for walking and running. This muscle is located on the back portion of the lower leg. The tendon of the gastrocnemius muscle is joined with the tendon of the soleus muscle and both form the Achilles tendon and attach to the calcaneus (i.e., the heel bone).Learn more in:
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Explain the pathway of an electrical impulse during the excitation of human heart.
Answer:
electrical impulse travels from the sinus node to the atrioventricular node across the cells of the heart left and right atria.
When the impulses get to the atrioventricular node which is located between atria and ventricles,it slow down for a short period of time
Explanation:
Heart excitation starts from the sinoatrial (SA) node then propagates through right and left atria. The atrial depolarization expands to the atrioventricular node, and move via the bundle of His to the bundle branches or Purkinje fibers.
electrical impulse travels from the sinus node to the atrioventricular node across the cells of the heart left and right atria.
When the impulses get to the atrioventricular node which is located between atria and ventricles,it slow down for a short period of time and it's then continue the conduction pathway through bundle of His into ventricles.
What is the least hydrophilic substance
Answer:
oil
Explanation:
Among the given ones, the least hydrophilic substance is oil. The correct option is C.
What is hydrophilic substance?The 'hydrophilicity' of a molecule or surface refers to how much or how little it draws water.
Sugar, salt, starch, and cellulose are a few of the most typical examples of hydrophilic compounds. Polar compounds are those that are hydrophilic.
In contrast, since oils are nonpolar, they are not drawn to the polarity of water molecules. Oils are in fact hydrophobic, or "fearful of water." Oil molecules are repelled by water molecules rather than attracted to them.
A molecule of oil has a non-polar structure. Its charge does not have a positive or negative end, but is evenly balanced.
Thus, the correct option is C.
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Your question seems incomplete, the missing options are:
salt
an ion.
oil.
an amphipathic molecule.
a gas.
If a patient's disease has no known cause, the disease is referred to as