What is a controlled variable in an experiment?
a
b
A factor that is purposely left the same.
A factor that is purposely changed and being measured.
A factor that will be observed and measured.
A factor that is purposely being changed.
С
d A factor that is purposely being changed
Answer:
A factor that is purposely left the same.
Explanation:
A controlled variable should not be changed throughout an experiment or else it will affect the outcome of each individual trial.
Describe the ocean Ecosystem briefly and in your description give at least three examples of different habitats ?
Answer:
the intertidal zone, the pelagic zone, and the abyss.
the temperature, water depth, water pressure and amount of light are the only things that differ from these great places.
In a certain ecosystem, foxes hunt and kill rabbits for food. The interaction between foxes and rabbits in this ecosystem can best be described as a _______ relationship. A. predator/prey B. producer/consumer C. decomposer/prey D. parasite/host
Answer:
predator/prey
Explanation:
Answer:
predator/prey i believe
Explanation:
Which one of the following would be a good tool to represent data in terms of percentage of a whole? A. Pie chart B. Line graph C. Scatter plot
Answer:
A. pie chart
Explanation:
it's easier and can be understood very well
When a membrane protein is radioactively labeled during synthesis and followed through the various organelles in the secretory pathway, all the radioactivity is concentrated in the cis-Golgi apparatus six hours after the protein synthesis. This suggests that the protein
a. is misfolded and being degraded in the cis-Golgi.
b. contains a KDEL sequence near its C-terminus.
c. has a membrane-spanning domain length equals the
d. thickness of the cis-Golgi membrane.
e. was imported directly into the cis-Golgi posttranslationally.
f. has a mannose-6-phosphate tag.
Answer:
C. has a membrane-spanning domain length equals the thickness of the cis-Golgi membrane.
Explanation:
Secretory pathway is the pathway that transport proteins to the cell surface membrane. For this, the membrane proteins are labeled radioactively and move through the various organelles to carry the proteins to the surface membrane.
After six hours, all the radioactivity is concentrated in the cis-Golgi apparatus this means that The protein carries membrane-spanning domain which widens or make the cis-Golgi menbrane thick.
Hence, the correct answer is "C".
write down the number of nucleotide present in the above diagram
Answer:
6
Explanation:
A nucleotide includes:
1 phosphate group (p) 1 sugar (s) 1 nitrogenous base (A, T, G, C)Which of the following is true about pH?
a. Neutral is a pH of 0
b. Bases have a pH of 1-7
c. pH is the concentration of hydrogen ions
d. Acids have a pH of 8-14
Answer:
c
Explanation:
Need help. ASAP What are considered characteristics of science? Select all that apply.
- Scientific experiments are not falsifiable.
- Scientific experiments are peer-reviewed.
- Scientific conclusions are based on anecdotal evidence.
- Scientific phenomena are observable.
- Scientific hypotheses are testable.
Answer:
id say c and d but idk
Explanation:
The statements that are considered the characteristics of science are as follows:
Scientific phenomena are observable.Scientific hypotheses are testable.Scientific conclusions are based on anecdotal evidence.Scientific experiments are not falsifiable.Thus, the correct options are A, C, D, and E.
What are the characteristics of science?The characteristics of science include objectivity, reliability, accuracy, validity, ethical neutrality, systematic exploration, abstractness, defined precision, objective approach, replicable experiments, etc.
Accuracy and validity are the foremost important characteristics of science. Such scientific experiments are concluded on the basis of real and valid evidence.
Scientific phenomena are clearly and transparently observable in a more detailed sense. Scientific hypotheses are significantly made in order to test them and predict the most accurate outcome or conclusion based on such hypotheses indiscriminately.
Therefore, the correct options for this question are A, C, D, and E.
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Why do viruses reproduce
Answer:
you just take medcine to help you feel better but it doesnt take it all out.
Explanation:
Cells detecting the boundary of a surface are subject to less lateral inhibition than cells detecting the center of the same surface. This leads to an effect called
Answer:
edge enhancement
Explanation:
Edge Improvement is an image processing filter that enhances the edge contrast of an image or video in an effort to improve its sharpness. Edge enhancement does not enhance subtle details found in more uniform areas of the image, such as texture or grain appearing in flat or smooth areas of the image. The filter works by marking the sharp edge boundaries of the image, the edge between a subject and the contrasting color background, and increasing the image contrast in the area around the edge.A sequence of base pairs that codes information for a specific trait is called a ________. A. Nucleotide B. Gene C. Chromosome D. Enzyme
Base pairs are nucleotides that are the structural unit of the genetic material. Bases code for the traits that are in the form of genes. Thus, option B is correct.
What are genes?Genes are the primary unit involved in heredity and are composed of nucleotides that make the DNA. They are involved in the production of proteins through the process of translation.
Genes are made of alleles that code the traits inherited from the parents through the method of reproduction. The dominant alleles are expressed whereas the recessive are masked and not visible in the phenotype.
The alleles are made of chromosomes and DNA that are in turn made of nucleotide sequences, sugar, and a phosphate group.
Therefore, the base pairs code for the traits called genes.
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Which of the following describes a CARBOHYDRATE? Which describes a LIPID?
1. apples and bread
2. ring shaped structure for monomer
3. can be saturated or unsaturated
4. the polymer is called polysaccharide
5. steroids and hormones
Why is the amount of fertilizer known as the independent variable?
Answer:
You can think of an independent variable is the variable that is being varied by you the experimenter or scientist; it is the input/"cause"/the tunable variable. A dependent variable is the response/output/"effect".
There is also the control variable, which are variables that stay constant throughout. You generally have only one independent variable and many control variables so that you can properly disentangle cause and effect.
A simple example might be say you want to know if a certain brand of fertilizer helps your crops grow. You want to see how much fertilizer you need for optimal growth without using too much. What is the independent and dependent variable? (Highlight below for the answer!)
The independent variable is the amount of fertilizer you put on the crop. It is the variable that you, as the tester, vary yourself. The dependent variable is how much your crop grows. What about the control? It is the crop you choose to use the fertilizer on (e.g., corn, wheat, peas). Certainly, comparing the influence of fertilizer between corn and peas would not definitely tell you whether the fertilizer is effective; if you compared two different crops, you would have other confounding variables out of your control, so you want to test it only on one crop at a time.
I put cause and effect in quotes because you may run into one of many cause/effect fallacies (or mistaken beliefs). It is possible (and often happens in research) where you plot what you think is an independent and its dependent variable, but the reality is quite different! There are two common types- spurious relationships and spurious correlations. A spurious relationship is one in which a direct cause/effect relationship is concluded incorrectly when in fact there is a lurking or hidden variable unaccounted for. One commonly cited example is say you find an increase of death by drownings and ice cream sales. It would be incorrect to infer that eating more ice cream causes more drownings, or vice versa. The lurking variable that can explain both is hot weather (i.e., people eat more ice cream and go swimming more to cool down). A spurious correlation is incorrectly inferring the extent of how related two variables are (not necessarily a cause/effect relation, but something used often in statistics). Here is a website that illustrates quite ridiculous correlations (a pet project of a graduate student), emphasizing that correlation is not causation.
Pinky's science fair project in junior high focused on an observation that the crickets outside her window chirped less frequently when the temperature was colder.
Answer:
See the answer below
Explanation:
The complete question: Pinky's science fair project in junior high focused on an observation that the crickets outside her window chirped less frequently when the temperature was colder. Consider if data was collected consisting of the average number of cricket chirps at different temperatures in her backyard. What's the independent variable?
The independent variable would be the temperature.
Independent variables are variables that produce effects on another variable while remaining unaffected themselves. They can be manipulated in the course of a research in order to measure the kind of effects they exert on other variables - the dependent variables to be specific. The dependent variables are the actual variables needed to test the hypothesis of a research.
In this case, a variation in temperature was observed to have an effect on the chirping frequency of crickets. Hence, the independent variable would be the temperature.
The water-to-land transition occurred independently several times in the protostomes. Which of these is not an example of an adaptation for terrestrial living that may have arisen by convergent evolution? The water-to-land transition occurred independently several times in the protostomes. Which of these is not an example of an adaptation for terrestrial living that may have arisen by convergent evolution? Internal respiratory structures Eggs with a covering that minimizes water loss Internal fertilization Decreased surface-to-volume ratios to increase the efficiency of gas exchange in air
Answer:
The incorrect statement is : Decreased surface-to-volume ratios to increase the efficiency of gas exchange in air
Explanation:
the fundamental problem that an aquatic animals face during its progress to land to save the egg or embryo from parching. So they have developed cleidoic eggs where undeveloped organism stay implanted inside extra embryonic layers, for example, amnions and are secured in egg shells. These eggs have minute pores so embryo can make gas exchange.
This egg shells forestall water misfortune. Interior treatment, however are available in certain sharks, yet it is for the most part a variation of land creatures. Explicit intromittent organs have been created for moving of sperm in to female. In contrast with water , gaseous movement is in land creatures is happen through advancement of lungs which contain numerous alveoli where gaseous exchange is occurred. Decreased surface to volume ratio decrease productivity of gas exchange , not increment.
Thus, The incorrect statement is : Decreased surface-to-volume ratios to increase the efficiency of gas exchange in air
Botany Professor. Dr. Noa Nkembe. is conducting research over how temperature effects the toxicity of Toxicodendron diversilobum (poison oak). He grows the plant in controlled environments that are kept at temperatures that vary by just 0.05 degrees Celsius. Which of the thermometers would be the BEST choice for him to use for this experiment? Justify your answer. Glass thermometer Temperature probe Temperature strip
Answer:
Glass Thermometer
Explanation:
Glass oral thermometers typically have markings every 0.1 °C or 0.2 °F. Basal temperature is stable enough to require accuracy of at least 0.05 °C or 0.1 °F, so special glass basal thermometers are distinct from glass oral thermometers.
8) Mary Anning made major contributions in the field of
Medicine
Paleontology
Entomology
Egyptology
Archaeology
Answer:
Paleontology
Explanation:
differentiate between gamopetalous and polypetalous
Answer:
the difference between polypetalous and gamopetalous, is that polypetalous is (botany) having a corolla composed of distinct, separable petals while gamopetalous is (botany) having petals wholly or partially fused such that the corolla takes the form of a tube.Explanation:
Answer:
As adjectives the difference between polypetalous and gamopetalous. is that polypetalous is (botany) having a corolla composed of distinct, separable petals while gamopetalous is (botany) having petals wholly or partially fused such that the corolla takes the form of a tube.
Explanation:
Does a crow move its head with its eyes fixed or does it move its head and eyes independently?
Answer:
A crow does move its head with its eyes fixed.
Explanation:
Birds Eyes Are Fixed, So Their Neck Compensates To Hold Vision Steady. If a bird is moving and its wants to keep its eyes looking at something while it is moving then its body must compensate.
Which statement is not part of the Cell Theory * 10 points All living things are made of one or more cells Cells are the basic unit of structure in living things All living things are composed of eukaryotic cells Cells come from preexisting cells
Answer:
The statement "All living things are composed of eukaryotic cells" is incorrect and is not a part of Cell Theory
Explanation:
Eukaryotic organisms are not the only living things in existence. Micro organisms such as bacteria are referred to as prokaryotic. This classification is done on the basis of the presence or the absence of a nucleus. Eukaryotic organism are more evolved and contain a well defined nuclear structure.
Which is NOT a quantitative measurement of a pencil?
O A) length
OB) diameter
O C) mass
O D) color
The quantitative measurement of a pencil cannot be measured. Thus, option D is correct.
What is quantitative measurement?
Quantitative measurement has been defined as the the measures the values or the counts as well as the expressed as the numbers and the quantitative data along with the data just about the numeric variables such as the how many or how much as well as how often.
Qualitative data has been the measurement of the time and they may be represented by the name of the symbol as well as the code of the number. The quantitative measurement has been defined as the counting and the expression by the help of numeric value.
The quantitative measurement has been defined as the counting and the expression by the help of numeric value. Quantitative measurement has been defined as the the measures the values or the counts as well as the expressed as the numbers and the quantitative data.
Therefore, The quantitative measurement of a pencil cannot be measured. Thus, option D is correct.
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List 3 examples of organisms. ANSWER FAST PLEASEEE!
Answer:
Animals, plants, and bacterias
Explanation:
Explanation:
Bacteria
Archaea
Eukarya
I need help with this guys anyone.?
Large waves cause erosion of shorelines. Seawalls constructed of concrete can protect shorelines from this erosion. What type of connection is made between the ideas in these sentences? (1 point)
A.
Problem and Solution
B.
Contrast
C.
Cause and Effect
D.
Desciption
cause and effect type of connection is made between the ideas in these sentences. Thus option C is correct.
What are the types of sentences ?
A set of arranged words which form and conveys a complete meaningful sense or a thought in the form of order or statement called as sentence.
The sentences consist up different parts like subject, verb and punctuation.
By forming sentence we can express different thoughts and feelings, ideas either orally or by writing.
The sentences are up two types based on function and structure.
Based on their function, it can be up four types such as Declarative Sentences, Imperative Sentences, Interrogative Sentences, Exclamatory Sentences
Thus option C is correct.
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why are white blood cells unable to transport gases
Answer:
The majority of oxygen in the body is transported by hemoglobin, which is found inside red blood cells.
Explanation:
Although oxygen dissolves in blood, only a small amount of oxygen is transported this way. Only 1.5 percent of oxygen in the blood is dissolved directly into the blood itself. Most oxygen, 98.5 percent, is bound to a protein called hemoglobin and carried to the tissues.
3.
What is matter?
O Matter is only the solids on Earth.
Matter doesn't exist.
Matter is energy.
Matter is the stuff of the universe.
Answer:
matter is the stuff of the universe
Explanation:
What are the differences between prokaryotic and eukaryotic gene expression? Group of answer choices Regulation of transcription is identical in both.
Answer:
See the answer below
Explanation:
The gene expression involves a series of steps that have to do with encoding the information in genes as mRNA - transcription - and the translation of the codes into proteins - translation.
The process of transcription and translation happens within the same space in prokaryotic cells. Since they have neither nuclei nor membrane-bound organelles, both transcription and translation happen in the cytoplasmic space of the cell simultaneously.
However, in eukaryotic cells, transcription happens in the nucleus because the DNA is located within it. Once this takes place, the mRNA produced is transported outside the nucleus into the cytoplasm where they engage with the ribosome and tRNA in a translation process.
Kevin is examining the algae cell under microscope. there is no nucleus in the cell. which statement can Kevin make about the cell
A it is eukaryotic
B it is heterotrophic
C it is prokaryotic
D it is parasitic
Answer:
I think its C. prokaryotic
Explanation:
it is unicellular with a rigid cell wall but no central nucleus.
which of the following is found in both prokaryotic cells and eukaryotic cells? a)nucleus b)cytoplasm c)mitochondria d)chloroplast
Answer:
cytoplasm
Explanation:
Both prokaryotic and eukaryotic cells have structures in common. All cells have a plasma membrane, ribosomes, cytoplasm and DNA... the cytyis all the contents of the cell inside the cell memey, not including the nucleus.
What is the purpose of grid paper in your investigation? (1 point)
O to observe how water refracts the light from objects drawn on the grid
O to investigate how changing the incident angle affects refraction
O to take notes on your observations
to investigate how different materials refract light
What was the investigation? But from my best guess I'm assuming it's the second option. This may be incorrect.
Answer: your so.... this is a 4th grade thing how do you not know oh my lord
Explanation: