Answer:
The Answer is Letter A.
Explanation:
let residents build groins
The experimental group is the group that is left
4.
alone during the
experim
ent.
Tru or false
4. Distinguish between the types of scientific
investigations. Does all scientific knowledge
come from experimentation? Explain your
answer. SC.7.N.1.3
Answer: Descriptive, Comparative and Experimental (which comes from experimentation).
Explanation:
There are three types of scientific investigations:
Descriptive: This type of scientific investigation studies parts of a system, which can be natural or artificial. It describes everything that is being studied and no predictions are made. There are three types of descriptive methods: case-study methods (an in-depth study is produced from many sources with different methods), observational methods (no questions asked, just an observation of the behavior of a subject and no manipulation of the variables), and survey method (some people are interviewed and the researchers study the answers.)Comparative: It gathers information from organisms, systems, places or from any source, to compare them using also a control group. But, there is no imposed treatment because it is not ethical or because it is not possible. So, the treatment is only observed.Experiment: As its names says, it uses an experimental test designed to study some phenomena, where variables are controlled so the treatment is not only observed as the comparative method. Then those variables are measured to collect information or evidence that supports or not a previous hypothesis and is used to assess theoretical knowledge. The independent variable is manipulated while the dependent variable is measured. This type of scientific investigation comes from experimentation.Which of the following statements concerning ribosomes is true?
A. Several ribosomes are often attached to and translating the same MRNA.
B. Ribosomes join amino acids together to form a polypeptide.
C. Ribosomes have one binding site for MRNA and three binding sites for 1RNA molecules.
D. Ribosomes are the organelles responsible for protein synthesis.
E. All of the above statements are true.
Answer:
E. All of the above statements are
Explanation:
Ribosomes are organelles found free floating in the cytoplasm or attached to endoplasmic reticulum (RER). They are the site of protein synthesis in a cell. Ribosomes initiate the translation process by binding to the mRNA molecule using their mRNA binding site. Several ribosomes called POLYSOMES are often attached to and translating the same MRNA molecule.
A ribosome contains four (4) binding sites; one for the mRNA and three (P-site, A-site and E-site) for tRNA, which are small RNA molecules that carry and add amino acid to the growing polypeptide chain during the process. In a nutshell, the ribosome via the aid of tRNA is responsible for joining amino acids together to form a polypeptide chain (future protein).
Ribosomes are complicated macro molecules composed up of nucleic acids and proteins. They are important as they perform a major role in protein assembly and transportation.
The correct answer is:
Option E. All of the above statements is true.
The explanation for the above option is:
The ribosome is located either free or is connected to the endoplasmic reticulum(RER).Ribosomes assist in the translation of the information from mRNA.Polysomes are numerous ribosomes connected to a single mRNA molecule.Ribosomes have one binding position for mRNA and three binding positions for tRNA molecules.The three binding sites for tRNA is (A- site) amino acyl site, (P-site) peptidyl site and (E site) the exit site.Ribosome assembles amino acids to form a polypeptide chain. These polypeptides get transported to the cytoplasm.Therefore all the above statements are true for ribosomes.
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What's an example of a monosaccaride?
Answer:
Glucose
Explanation:
Any simple sugar, like glucose, is a monosaccaride.
Explain why circulatory problems often occur with people who are bedridden or with inactive people who seldom use their muscles.
Question 5
If you removed the lens from an eye and looked through it at an upright tree, how would the tree appear?
upright
upside down
the top of the tree would be pointing to the left
the top of the tree would be pointing to the right
If you removed the lens from an eye and looked through it at an upright tree, the tree appear upside down. Thus, the correct option for this question is B.
What is the function of the lens?The function of the lens in the eyes is to focus light rays onto the retina. Then the retina converts this light into electrical signals which send messages to your brain and creates the image that you observe.
The lens of the eye is the translucent biconvex structure that dangled behind the Iris of the eye. If you eliminate the lens from an eye and looked through it at an upright tree, then the perception of light is not made and cannot stimulate electrical signals by the retina, and the tree will appear upside down or an inverted image is formed.
Therefore, the tree will appear upside down, if you removed the lens from an eye and looked through it at an upright tree. Thus, the correct option for this question is B.
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PLEASE HELP ME PLEASEE!!!!! VERY EASY FOR SOME
Answer:
they would absorb
Explanation:
hopes that helps
Pt3 can you all help me
QUICK PLZ HELP MEEE!!!! ASAP 25POINTS
Answer:
Plant 1 grew steadily. Plant 2 grew quickly at first and then stopped growing.
Explanation:
You can tell that Plant 1 grew steadily because the growth for the plant can almost be represented by a linear equation. You can tell that Plant 2 grew fast at first and stopped growing because of its increase towards the beginning on the graph and how the line because horizontal later on. I hope this helps!!!
2. What is the function of the cell membrane?
Answer:
it protects the cell. it act as a receptor. it regulates the transport of substancesit receives chemical messenger from other cells.What causes surface tension in water?
Answer:
the molecules on the surface to contract and to resist being stretched or broken.
Explanation:
Jenna took an open bowl of leftover mashed potatoes from the refrigerator and noticed a difference in smell. She determined that chemical changes occurred since the potatoes were first placed there. Which observations most likely led to Jenna’s conclusion? a change of odor a decrease in temperature a change in moisture content a decrease in mass
Answer:
its a on ed
Explanation:
The observation that most likely led to Jenna’s conclusion is a change of odor. Thus, the correct option is A.
What are Chemical changes?Chemical changes may be defined as those changes through which one chemical substance gets transformed into another chemical substance. This occurs in a variety of steps and types.
A difference in the smell of leftover mashed potatoes indicates the change in odor which is observed by Jenna.
A decrease in temperature, a change in moisture, and a decrease in mass do not make any sense with respect to difference in smell.
Therefore, the observation that most likely led to Jenna’s conclusion is a change of odor. Thus, the correct option is A.
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In aquatic ecosystems, phytoplankton and other photosynthetic organisms appear in the upper layer of the water, but not deeper layers. Which statement explains this distribution?
ANSWER :
The deeper layers are too dark for photosynthesis to occur.
Explanation:
Photosynthesis is a unique process to autotophic organisms. It involves the use of light energy from the sun to manufacture organic molecules (food). As the phenomenon implies i.e. PHOTO - LiGHT, light is an unnegotiable requirement for photosynthesis to take place. Autotrophs are able to perform this process because they contain pigments (Chlorophyll) that can trap energy from sunlight.
In an aquatic ecosystem, phytoplanktons and other photosynthetic organisms like aquatic plants are the autotophic organisms. They are found in the upper layer of the water so that they can reach light from the sun. The light from the sun cannot travel deep down the water making the deep parts of the ocean be deprived of light.
This is the reason why photosynthetic organisms cannot be found in the deep parts of the water as they will be unable to have access to the light from the sun in order to perform photosynthesis.
Answer:
the answer is a
Explanation:
1.increasing heart rate raised the blood delivery of the body
True or false
The _____ sits below the stage and varies the field for viewing the specimen.
Answer:
Diaphragm
Explanation:
This is also referred to as the iris.it is located under the stage of the microscope. It's main role is to control the quantity of light that gets to the specimen. The diaphragm is adjustable. Each if the 5 holes in the disc have varying diameter. And it is helpful for adjusting contrast and resolution as regarding the specimen
A student wants to illustrate the number of each different bird species that migrates south in winter. Which type of chart/graph would be the most appropriate to use?
a
Pie Chart
b
Bar Graph
c
Line Graph
Answer:
bar graph
Explanation:
A bar graph
You want to show that there is no connection between one species and another.
The line graph will do exactly the opposite. It will imply that the line joining 2 points gives some connection between one point and the next point.
The Pie chart is usually used to compare one number size with a another, like the total number of Covus 19 by state each state close to the other. It is not a good choice because California (for example) might have the most number of cases of the virus but it also has the largest population. You might use the pie chart by converting it to %s, but what would that give you, and how could you use it.
Accepta bond formed by the electrical attraction between two oppositely charged ions is a(n)_____.
Answer:
Ionic bond
Explanation:
A bond formed by the electrical attraction between two oppositely charged ions is an Ionic bond.
The chart below lists different plant species with a description of adaptations. Plant Species Adaptation Turkey Feet Grass This plant has very deep roots to prevent soil loss in windy areas, and to help anchor the plant. Pinkflower Hedgehog Cactus Contains spines for protection, and a waxy coating on the sunny side of the plant to help prevent water loss. Devil’s Walking Stick Secrete chemicals as a defense mechanism, and have broad leaves to catch sunlight in shady areas. Hairy Manzanita Pale pink flowers attract humming birds for pollination. Which plant species above is best adapted for a grassland biome? a Turkey feet grass b Pinkflower hedgehog cactus c Devil's walking stick d Hairy Manzanita
Answer:
A) Turkey feet grass
Explanation:
Grassland biome is one of the biomes that makes up the Earth's biosphere. Due to the characteristics of this biome (grassland), it favours the abundance of grass species over trees and shrubby plants. These characteristics include a low annual rainfall, soil's susceptibility to wind erosion etc.
Based on these characteristics, an organism that will thrive in this biome must be structurally adapted to it. This is the case of the Turkey feet grass mentioned in the question. The Turkey feet grass possess very deep roots to prevent soil loss in windy areas, and to help anchor the plant. This is as a result of soil loss common to the soil of grassland biomes.
Nicholas has been biting his nails since he was a kid. He wants to break the habit so he puts bitter-tasting nail polish on his left hand and leaves his right hand without polish. After 3 days he notices his nails on his left hand have grown but he continued to bite his right-hand nails.
A. Independent Variable=
B. Dependent Variable=
C. Control=
Answer:
Independent: Putting the nail polish
Dependent: nail growth
Control: right hand, without polish
The experiments are known to have various variables. In Nicholas's case, nail polish is an independent variable, nail growth is a dependent, and right nails without polish are a control.
What are independent variables?Independent variables are defined as the test variables that in an experiment are not constant but are kept varied and manipulative causing various effects on the result of the hypothesis. Putting the bitter nail polish on the nails of the left hand is a test variable.
The dependent variable (outcome variables) along with independent results in cause and effect and are conditional on the independent factors. The length of nails is dependent as it is affected by the nail-biting.
On the other hand, the control variables are constant in that the factors are limited so that they do not interfere with other factors that affect the outcome. Fingernails on the right hand with no polish are controlled.
Therefore, nail polish is an independent variable.
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Which carbohydrate can be used by the body as an immediate source of energy?
glucose
cellulose
chitin
glycogen
Answer:
The answer is glucose
Answer:
It would be the first one "glucose"
Explanation:
Following massive damage to his frontal lobes, Phineas Gage was most strikingly debilitated by: auditory hallucinations. O memory loss. O speech loss. antisocial and aggressive behavior.
Answer:
maybe he needs dietary fibre
Following massive damage to his frontal lobes, Phineas Gage was most strikingly debilitated by antisocial and aggressive behavior. The correct option is D.
What is the brain?The brain is the most important part of the body. It controls and runs all functions of the body. It is walnut shaped and present in the head of the body. The brain is divided into two hemispheres. The left and the right hemisphere.
The brain is also divided into frontal and parietal lobes. The frontal lobe is present in the front section, and it controls social interaction, problem-solving, motor functions, etc.
So if the frontal lobe will be affected, the social behavior also gets affected and the person becomes irritable and aggressive.
Thus, the correct option is D, antisocial and aggressive behavior.
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Most of the ionic compounds are found in the
Answer:
Ionic compounds are compounds consisting of ions.
Explanation:
Ionic compound can be more complicated the two element one consist of positively and negatively charged ions.
Ionic compound are they electrical neutral the charges are always equal and opposite,ionic compound usually have they multiple nearest part of molecules.Ionic compound containing hydroxide and oxide are they classified as bases and they performed acid base reactions.Ionic compound typically high melting and boiling points hard and brittle,almost electrically insulating.Ionic compound can be produced by the evaporation or freezing, and they metals can directly react the highly negative gases to an ionic product.Ionic compound is can be obtained as the solid compound by the solvent from electrolyte solution.Ionic compound used for the solid state of complex ionic compounds from solid melted together.Ionic compound also be synthesized as the product of a high temperature reaction between solids.Ionic compound held together the forces between the charge distribution of these bodies and the particular ionic compound.embryology is the study of a _______which is a fertilized egg attached to the wall of the mothers uterus
Fill in the blank
Answer:
Embryology is the study of a embryo which is a fertilized egg attached to the wall of the mothers uterus by umbilical cord.
Embryology refers to the study of an embryo, which is a fertilized egg attached to the wall of the mother's uterus.
What is embryology?Embryology can be defined as a branch of biology that involves the study of the early development of a fetus and an embryo from a single-celled zygote, especially in female organisms (mothers).
In this context, we can infer and logically conclude that embryology involves the study of an embryo, which is a fertilized egg that is typically attached to the wall of the mother's uterus.
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Which most accurately describes the basis of the scientific method? A.) a path of clearly defined steps that must be followed in a particular order B.) a possible answer to a scientific question based on knowledge or research C.) the recipe for how to conduct an experiment that must be followed precisely D.) the process of hypothesis and testing through which scientific inquiry occurs
The statement 'the process of hypothesis and testing through which scientific inquiry occurs' most accurately describes the basis of the scientific method.
The scientific method is a series of sequential steps used to build scientific knowledge.The steps of the scientific method include:
To make observations about a given phenomenon of the natural world and formulate questions based on these observations.To pose a plausible explanation (i.e., a hypothesis) in order to answer these questions.To test the working hypothesis by experimental and/or observational procedures.To collect data in order to confirm or reject the working hypothesis.Examine results and draw conclusions.In conclusion, the statement 'the process of hypothesis and testing through which scientific inquiry occurs' most accurately describes the basis of the scientific method.
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On the pH scale, a 7 indicates _____. neutrality an acid a base
Answer:
a 7 indicates neutrality
less than 7 is an acid
more than 7 is an alkaline, or a base
Explanation:
your pH scale ranges from 0-14
7 is neutral
less than 7 is an acid
more than 7 is an alkaline, or a base
Answer:
Neutrality
Explanation:
Which event is an example of a living thing responding to a stimulus?
A. A rock makes a loud sound as it falls down a cliff.
B. The temperature rises during the day.
C. The wind blows the roof off a house during a storm.
D. A houseplant grows toward the window.
Answer:
D. A houseplant grows toward the window.
Explanation:
All of the other answers are examples of nonliving things. A houseplant, however, is alive, and moves towards the window because it can receive more light.
Explain how the Hershey-Chase experiment used bacteriophages with radioactive sulfur and radioactive phosphorus to demonstrate that DNA, and not protein, is the carrier of genetic information.
Answer:
He separated the phages into radioactive sulfur-containing protein ghosts and radioactive phosphorus-containing DNA. They found that the radioactive sulfur protein ghosts could attach to bacterial membranes while the radioactive phosphorus DNA could not
Answer:
He separated the phages into radioactive sulfur-containing protein ghosts and radioactive phosphorus-containing DNA. They found that the radioactive sulfur protein ghosts could attach to bacterial membranes while the radioactive phosphorus DNA could not
Explanation:
in atom structure what is present in the same numbers as the protons in an atom.i will make as brainlest
Answer:
Explanation:
electrons i believe. That is why an atom has a neutral charge- electrons and protons cancel each other out
Answer:
Electrons
Explanation:
An atom contains the same number of protons as electrons to maintain a negative charge. An ion is an atom which has lost or gained electrons.
A science class investigated the relationship between the amount of time
students spend doing chores every night and their average grades on
schoolwork. Which statement from the lab report best represents a
conclusion?
A. Based on our results, students who do 1 hour of chores per night
have grades that are on average 0.2 points higher than students
who do no chores.
B. Doing chores at night actually helps students do better at school,
even if it seems like the opposite would be true.
C. We believe that students should spend at least 2 hours doing
chores every night if they want to get better grades at school and
help their families.
OD. If students spend at least 1 hour per night on chores, then they are
guaranteed to get higher grades on their schoolwork.
Answer:
A. Based on our results, students who do 1 hour of chores per night
have grades that are on average 0.2 points higher than students
who do no chores.
Explanation:
In a scientific experiment that employs the scientific method, series of steps should be followed. The steps involved in the scientific method include; making an observation/asking a question, formulating a hypothesis, testing the hypothesis, analyzing the result, drawing a conclusion etc.
From this step, we would notice that DRAWING CONCLUSION immediately follows the analysis of result, which means the conclusion is based on the result of the experiment. A conclusion in a scientific experiment should be factual and based on the measured result. It should either reject or accept the hypothesis.
The best representation of a conclusion is A. Based on our results, students who do 1 hour of chores per night have grades that are on average 0.2 points higher than students who do no chores. This statement has a conclusive content unlike other options that still seemed unlikely.
Answer:
A
Explanation:
Did the quiz
How do experiments show cause-and-effect relationships?
Answer:
A cause and effect relationship is when something happens that makes something else happen. ... Cause and effect relationships are also found in stories. For example, if Mae is late to school, she might lose recess time. In that case, being late to school is the cause and the effect, or result, is her losing recess time.