Answer:
a Citric acid is added to the solution, but the pH of the solution does
not change.
Explanation:
A scientist hypothesized that oxygen atoms from both carbon dioxide and water are used to make glucose during photosynthesis. However, experimental results using oxygen isotopes showed that all of the oxygen from the water ended up in the oxygen molecules that were produced. None of the oxygen from water was found in glucose.
What should the scientist do to best gain scientific understanding of this topic?
a. Analyze the results, and change the experimental methods to retest the hypotheses in a different way.
b. Discard the faulty results that do not support the original hypothesis, and repeat the experiment using the same methods.
c. Analyze the procedural errors that took place in the experiment, and summarize these in a conclusion statement.
d. Repeat the experiment and adjust new data to support the original hypothesis.
The scientist Discard the faulty results that do not support the original hypothesis, and repeat the experiment using the same methods; option B.
What is an experiment?An experiment is a research or test conducted in order to prove or disprove a hypothesis.
An experiment is conducted using steps or procedures based on an explanation given to an observation.
The results of the experiment by the scientist disproved his hypothesis.
Therefore, the scientist should discard the faulty results that do not support the original hypothesis, and repeat the experiment using the same methods.
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what was invented in the late 16th century that allowed scientists to study organisms at a new level
Answer:
compound light microscope
Explanation:
:)
The light microscope was in the late 16th century that allowed scientists to study organisms at a new level.
Thus, The microscope revolutionized the field of biology by enabling researchers to observe and study tiny structures, cells, and microorganisms that were previously invisible to the eye.
This technological advancement marked a significant milestone in the history of science.
It paved the way for discoveries and insights into the microscopic world of living organisms.
Thus, The light microscope was in the late 16th century that allowed scientists to study organisms at a new level.
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Regarding fluid shifts and dehydration, when ADH secretion increases to regulate sodium balance by means of increased water retention without additional water consumption (i.e., you lost water but retained electrolytes and didn't drink water], the end result is:
Answer:
increase Na+ levels in ECF compared to the original condition.
Explanation:
The increase in ADH secretion increases to regulate sodium balance. The will be increase sodium levels in ECF compared to original conditions. The is no additional water consumption in the reaction and electrolytes will be retained.
What's the common ecosystem of a Paramecium aurelia
Answer:
Paramecium live in aquatic environments, usually in stagnant, warm water. The species Paramecium bursaria forms symbiotic relationships with green algae. The algae live in its cytoplasm. Algal photosynthesis provides a food source for Paramecium.
definition of root pressure
Answer:
Root pressure is the transverse osmotic pressure within the cells of a root system that causes sap to rise through a plant stem to the leaves.
Explanation:
Root pressure occurs in the xylem of some vascular plants when the soil moisture level is high either at night or when transpiration is low during the day.
One gene pair can influence other gene pairs, with their combined activities producing some effect on phenotype; this called ________________. In Labrador retrievers, one gene pair codes for the quantity of melanin produced while another codes for melanin deposition. Still another gene locus determines whether melanin will be produced at all--lack of any produces an albino (recessive).
Answer:
Epistasis
Explanation:
Genetics can be defined as the scientific study of hereditary in living organisms such as humans, animals and plants
In Genetics, a gene pair has the ability to influence other gene pairs based on their combined activities which produces some effect on phenotype; this is called epistasis.
What is the scientific term used for the chemical reaction when a fuel burns? (Hint: your answer should be one word.)
Answer:
Combustion
Explanation:
Combustion is the chemical reaction that happens when fuel burns.
What do these images model?
A atoms
в compounds
C elements
D mixtures
Answer:
b
Explanation:
compounds
I have an experiment where I need to find out the Controlled Variable, Dependent Variable, and Independent Variable. In my experiment, I am using different temperatures of water, pieces of paper towels, paper clips. Please help!
Answer:
controlled variables=paper clips
independent variables=different temp of water
dependant pieces of paper towel
Explanation:
Have a nice day
5. How could looking at the canopy help determine the difference between a forest and a
woodland?
Answer:
Forests naturally have a closed canopy permitting very little light to penetrate to the ground below. While woodlands have a more open canopy for light to go through it.
Explanation:
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Answer:
Explanation:
Mitochondria are membrane-bound cell organelles (mitochondrion, singular) that generate most of the chemical energy needed to power the cell's biochemical reactions. Chemical energy produced by the mitochondria is stored in a small molecule called adenosine triphosphate (ATP).
A vacuole is a membrane-bound cell organelle. In animal cells, vacuoles are generally small and help sequester waste products. In plant cells, vacuoles help maintain water balance
Lysosomes function as the digestive system of the cell, serving both to degrade material taken up from outside the cell and to digest obsolete components of the cell itself
Centrioles play a role in organizing microtubules that serve as the cell's skeletal system. They help determine the locations of the nucleus and other organelles within the cell.
The cell wall surrounds the plasma membrane of plant cells and provides tensile strength and protection against mechanical and osmotic stress. It also allows cells to develop turgor pressure, which is the pressure of the cell contents against the cell wall.
The cytoplasm is responsible for holding the components of the cell and protects them from damage. It stores the molecules required for cellular processes and is also responsible for giving the cell its shape.
Alto-cumulus clouds belong in which level of the atmosphere?
High level
Mid-layer
Low level
Very High level
Cloudlets, also known as altocumulus clouds, are tiny mid-level layers or patches of clouds that are most often seen as spherical clusters. Therefore, option (B) is correct.
What are alto-cumulus clouds?Cloudlets, also known as altocumulus clouds, are tiny mid-level layers or patches of clouds that are most often seen as spherical clusters. However, since there are so many different types of altocumulus, they may take on a variety of forms.
Indicators of convection, or increasing heat, in the atmosphere include altocumulus clouds. Warm air rises into the sky, where it cools and condenses nearby water droplets to create the cloud formations that we see from the ground.
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The graphs below show the change in temperature and salinity of a region of ocean as an instrument is lowered below the surface. Depth is measured in kilometers below the surface, temperature in degrees Celsius, and salinity in parts per thousand.
What is the most valid conclusion regarding ocean salinity based on the data?
A. Ocean salinity is not related to water temperature.
B. Ocean salinity changes with depth at a steady rate throughout the entire water column.
C. Ocean salinity increases as ocean temperature decreases.
D. Ocean salinity is more stable at higher temperatures than at lower temperatures.
Answer:
B. Ocean salinity changes with depth at a steady rate throughout the entire water column.
Explanation:
The data in the graph shows that Ocean salinity changes with the depth at a steady rate throughout the entire water column because when the water table rises it brings salts with them at the top so there is high concentration of salts in the upper layers as compared to other layers and going deep in the soil the concentration of salts becomes very low due to upper movement of salts.
Answer:
B. Ocean salinity changes with depth at a steady rate throughout the entire water column.
Explanation:
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Carl Linnaeus developed a two-word system for naming organisms. It is called .
Bacteria species live in the intestinal tracts of many types of mammals. These bacteria consume the partially digested food the mammal eats but also help to complete digestion of the food for mammals. This represents a ________________ relationship between species.
A) Predation
B) Mutualistic
C) Competitive
D) Commensalism
Answer:
B) Mutualistic
Explanation:
A mutualistic relationship is one of the symbiotic relationships that involves two organisms whose actions benefit one another. In mutualism both parties interact with one another and gain from one another.
According to this question, a bacteria species live in the intestinal tracts of many types of mammals. The bacteria helps the mammal to completely digest the food while the mammal provides shelter and food for the bacteria. This represents an example of MUTUALISTIC RELATIONSHIP.
Proteins are three dimensional molecules made of strands of amino acids (imagine a ball of string). There are 20 different amino acids used in proteins found in living organisms. Some of these amino acids are polar and others are nonpolar. Where would a series of nonpolar amino acids most likely be located in a protein that is found in the cytosol of an animal cell
Answer:
A series of nonpolar amino acids would most likely be located in the interior region of the tridimensional molecule.
Explanation:
Proteins are formed by linearly arranged amino acids, each with a side chain: the R-group.
Of the 20 different amino acids that compose the proteins, about half of them -10- are non-polar. Their R-groups are not stable if they are in contact with water, meaning that non-polar amino acids are hydrophobic.
When proteins are synthesized, they acquire a three-dimensional structure that makes them more stable. Lineal polypeptides get folded and turn into a shape that makes them more stable in the environment and capable of accomplishing their biological role. When they are in an aqueous media, their bent shape leaves the hydrophilic R-groups in contact with water. The hydrophilic R-groups stick in the center of the polypeptide, facing the protein interior, and avoiding interaction with water.
A genetic factor for a trait is always expressed when it is present is best described as ?
Answer:
A genetic factor for a trait that is always expressed when it is present is best described as dominant.
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Which tissue is found in papaya stem?
Answer:
spongy fibrous tissue
Explanation:
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Answer:
Xylem tissue
Explanation:
the stem of papaya is straight ,unbranched and soft.
In a survivorship curve, a type III species, like most insects and plants, is a species that has Group of answer choices an extremely long life span. a strong possibility of becoming extinct in a relatively short period of time. an equal probability of dying at any age. the highest probability of dying as it reaches its maximum life span. the highest probability of dying at a very young age.
Answer:
The correct answer is - the highest probability of dying at a very young age.
Explanation:
A type III survivorship curve represents species such as insects and plants where the individuals will live their life span to adulthood and die as they get older due to the greatest mortality for such individuals of certain species is experienced early in life. There will be a concave curve on a graph in type 3 species curve of survivorship. Therefore, there is very high chances of such species to die at very young age.
Which of the following situations would most likely lead to a stable population size?
Answer:
A. The rates of birth and immigration were balanced by the rates of death and emigration.
Laying the groundwork for the 'germ theory' of disease _________ discovered that organisms cannot spontaneously arise, but must be introduced into an environment.
A. Anthony Van Leeuwenhoek
B. Louis Pasteur
C. Robert Hooke
D. Ernst Ruska
Laying the groundwork for the 'germ theory of disease, Louis Pasteur discovered that organisms cannot spontaneously arise, but must be introduced into an environment.
Who was Louis Pasteur?Louis Pasteur was a chemist and microbiologist. He is known for the discovery of vaccines, fermentation, and pasteurization.
The germ theory is given by Pasteur. He first of all states that process fermentation is done by living organisms, bacteria, and yeast.
Thus, option B. Louis Pasteur is correct.
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scientists who believe global warming is happening would agree with which of the following statements?
(A) There are few, if any, misconceptions about global warming
(B) Most scientists agree that global warming is occuring
(C) Human activity is a minor cause of global warming.
(D) There is little humans can do to stop global warming
Answer:
B. Most scientists agree that global warming is occurring.
Explanation:
There is a large deal of misconception in the public surrounding global warming. Human activity is the primary cause of global warming, and therefore, there are many actions that humans could take to stop global warming.
An organism and its taxonomic key are shown below.
An image of an organism is shown. The organism has two body regions with four legs on each side. 3 mm is written next to the image of the organism. There are no claw-like pinchers.
Taxonomic Key
Step Characteristic Organism
1 8 legs Go to step 2.
More than 8 legs Go to step 3.
2 One body region Go to step 4.
Two body regions Go to step 5.
3 One pair of legs on each body segment Centipede
Two pairs of legs on each body segment Millipede
4 Less than 1 millimeter long Mite
More than 1 millimeter long Tick
5 Claw-like pinchers Go to step 6.
No claw-like pinchers Spider
6 Long tail with a stinger Scorpion
No tail or stinger Pseudoscorpion
Which organism is shown in the image?
Millipede
Spider
Scorpion
Tick
spider has no tail and has no stinger
Answer: its a spider
Explanation: cause it case a legs and it has two body regions
After a check-up, Josephine's doctor told her that she had mild anosmia and that she can only distinguish about two thirds of the smells that most adults can.
Answer:
Yes.
Explanation:
Yes, she can only distinguish about two thirds of the smells because of the mild anosmia while on the other hand, if she has full anosmia she loss the ability of smell. Mild anosmia is the disease which takes half or some part of the ability but in the case of complete or full anosmia, the patient has lost the ability to smell completely so that's why mild anosmia enable her to distinguish about two thirds of the smells as compared to full loss of smell ability.
Los hámsteres tienen 22 cromosomas y sus células haploides. ¿Cuántos cromosomas hay en su célula diploide heredera?
Answer:
El hámster Sirio posee 44 cromosomas (22 pares de cromosomas) en sus células somáticas diploides, mientras que el hámster chino posee 22 cromosomas (11 pares de cromosomas) en sus células somáticas diploides
Explanation:
Un individuo es haploide (n) cuando sólo posee un juego de cromosomas en el núcleo celular, mientras que un individuo es diploide (2n) cuando posee dos juegos de cromosomas. En general, los organismos pluricelulares diploides poseen dos tipos tipos de células: 1-germinales (gametos) haploides y 2-células somáticas diploides. El hámster Sirio posee 22 pares de cromosomas, es decir 44 cromosomas (2n=44) en sus células somáticas diploides y 22 cromosomas en sus células germinales haploides, es decir, en sus óvulos (gametos femeninos) o espermatozoides (gametos masculinos) cuya fusión durante el proceso de fertilización da lugar a un cigoto diploide. Por otra parte, el hámster Chino, el cual se considera un organismo modelo en citogenética, posee 22 cromosomas en sus células diploides (2n=22) y 11 cromosomas (n=11) en sus células haploides.
Which strand of mRNA would be made during transcription using the DNA strand shown below?
CTG ATA
A. GAC UAU
B. GAC TAT
C. GUC TUT
D. CTG ATA
Answer:
gac uau
Explanation:
The graph shows the supply and consumption of forests when the
consumption rate and population growth rate are both low.
When does consumption begin to surpass supply?
Answer:
In about 625years
Explanation:
According to the graphical representation depicted in this question, it shows the supply and consumption of forests when the consumption rate and population growth rate are both low. The green line represents the total consumption while the red line represents the total supply.
Based on observation of the graph, the total consumption exceeds or surpasses the total supply at a little above 600 years. Approximately, this can be said to be in about 625years.
Answer:
In about 625 years
Explanation:
Consumption has definitely surpassed supply by 700 years, but it only begins to surpass it around the 625 year mark according to the graph
how can so much DNA could fit inside a bacterial cell.
Answer:
The reason so much DNA could fit inside a bacterial is because the DNA are double-stranded, looped, coiled, and foleed into the cell. The DNA is tightly fitted around the nucleus.
Explanation:
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what is symbiosis _____
Answer:
Symbiosis, any of several living arrangements between members of two different species, including mutualism, commensalism, and parasitism. ... Any association between two species populations that live together is symbiotic, whether the species benefit, harm, or have no effect on one another.
Explanation:
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Answer:
Mutualistic, commensalistic, or parasitic symbiosis is any form of an intimate and long-term biological connection between two separate biological species. Each symbiont, or group of organisms, must be of a distinct species.
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Which best describes the processes of mitosis and meiosis?
Cells in mitosis go through the PMAT stages twice to produce diploid cells while cells in meiosis go through PMAT stages once to produce haploid cells.
Cells in mitosis and meiosis go through the PMAT stages twice to produce haploid cells.
Cells in mitosis go through the PMAT stages once to produce diploid cells while cells in meiosis go through PMAT stages twice to produce haploid cells.
Cells in mitosis and meiosis go through the PMAT stages once to produce diploid cells.
Answer:
cells in mitosis go through the PMAT stages twice to produce diploid cells while cells in meiosis go through PMAT stages once to produce haploid cells, is. the best answer
Answer:
The Answer is A.) Cells in mitosis go through the PMAT stages twice to produce diploid cells while cells in meiosis go through PMAT stages once to produce haploid cells.
Explanation:
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