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:
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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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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]
Which statement about atmospheric pressure near Earth's surface is true?
OA.
It increases as you move away from Earth's surface.
O B.
It decreases as you move away from Earth's surface.
O c.
It is constant throughout Earth's atmosphere.
D.
It is measured using a thermometer.
Answer:
B. It decreases as you move away from Earth's surface.
Explanation:
The atmospheric pressure is maximum at the surface of the Earth and it decreases with the increase in the elevation. In the mountains regains and on the cliff of the mountains, the atmospheric pressure is less as compared to the ground level. This happens because the density of the cool air is greater than the warm air. The decrease in pressure causes mountain sickness and many other problems to people when the elevation increases.
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:
Which of the following options is correct?
It was important that Mendel examined not just the F1 generation in his breeding experiments, but the F2 generation as well, because
a) he obtained very few F1 progeny, making statistical analysis difficult.
b) parental traits that were not observed in the F1 reappeared in the F2.
c) analysis of the F1 progeny would have allowed him to discover the law of segregation, but not the law of independent assortment.
d) the dominant phenotypes were visible in the F2 generation, but not in the F1
Answer:
b
Explanation:
It was important that Mendel did not limit his study to just the F1 generation because parental traits that were not observed in the F1 reappeared in the F2.
For example, in across involving a true-breeding yellow seedcoat pea plant and a true-breeding green seedcoat pea plant, all the F1 offspring would be yellow provided that the yellow seedcoat is dominant over the green seedcoat. The green seedcoat trait will only reappear in F2 offspring.
If the breeding experiment is limited to just the F1 generation, of course, the parental green seedcoat trait will not surface at all.
The correct option is b.
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.
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.
what is bundle cap in plants?
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.
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.
What is the responsiblity of individual in creating safe environment?
Answer:
The most important responsibility of an individual is to conserve energy and prevent them from being unnecessarily wasted......
Explanation:
What happens to an enzyme after it has completed a reaction?
A. The enzyme is folded.
B. The enzyme is reused.
C. The enzyme is denatured.
D. The enzyme is destroyed.
Answer:
i think it is a
Explanation:
I am smart
When the enzyme is used in the reaction it is bound to the substrate and releases product and the enzyme is unchanged, hence option b is correct.
What is the enzymatic reaction?An enzyme can be employed for other reactions after it has catalyzed a reaction and been freed from its binding to a substrate.
There is no change at all in the enzyme that has now been liberated and is prepared to catalyze the transformation of another molecule of the substrate into a product.
As a catalyst, it is crucial to keep in mind that the enzyme is not permanently changed by the reaction instead when the reaction is over, the enzyme returns to the condition it was in before the reaction started.
Therefore after a reaction enzyme can reuse for another reaction, hence option b is correct.
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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.
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
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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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.
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.
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.
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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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.
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.
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Question 1
10 pts
Observe the terrestrial food web below. Based on the way this food web is structured, list the producer(s) in this food
web. What is your evidence?
"If a scientist isolates genes for Hepatitus B antigens from a Hepatitus virus, then inserts them into a bacterial plasmid and replicates the bacteria in a fermenter, what product will be collected?"
Answer:
You could get a bacteriophage as a product.
Explanation:
Bacteriophages are viruses housed within bacteria, which take over the bacterial replication mechanism to multiply and replicate in a dependent manner.
The combination of the hepatitis b virus with a bacterium would end up forming a much more potent bacteriophage with higher virulence factors than the virus or the bacterium itself.
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:
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.
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?
Please answer this scientific question quickly
Answer:
(C). if the source is being paid to endorse a product .
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.
During the agricultural revolution ?
If a friend needed help creating a personal study strategy and had never thought about it before, (1 point) which of the following would be a good place to start? O Look over a list of common study habits, and see whether he or she currently practices them or not. O Tell him or her your study method so that he or she can adopt the same one. O Go to the beginning of the textbook, and reread it word for word. O Find a group of people to study with, since group studying is the only way to study well.
Answer:
common study habits
Explanation:
An area where you can concentrate and won't be distracted by loud noises or individuals who continually want your attention is one that is calm and has few distractions. Thus, option A is correct.
What are the good place to start common study habits?The neighborhood library is an excellent spot to conduct some studying. The nicest part is that there are no interruptions. It is quiet, has sufficient of table space, comfortable benches or chairs, and even couches in certain libraries!
An empty classroom can make a great study space. When classes are not in session, several universities permit students to utilize the classrooms for studying.
A calm area in your home, a school or public library, a coffee shop, or any of these can be suitable starting points.
Therefore, If you can locate a classroom that is open while you are in school during the day, it would make a great place to study. Coffee house.
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