Answer:
yes it is
Explanation:
people need goals!
Bromothymol blue (BTB) is a chemical that can be used as an indicator of the pH of a solution. Because CO2 produces an acid in water, BTB can indirectly measure how much CO2 is present in a solution. When placed in solutions with neutral pH (little CO2), the solution appears green. In solutions with low pH (high CO2), the solution appears yellow.
A teacher performed a demonstration to investigate how photosynthesis and respiration cycle carbon and oxygen. She placed a few drops of BTB in a test tube containing distilled water. Because distilled water has a neutral pH, the solution appeared green. The teacher used a straw to blow into the solution, and the solution turned yellow. She then placed an aquatic plant into the test tube, covered it to keep it air tight, and placed it under a light for 24 hours.
What color would the solution in the test tube be after being in the light, and what would it be if it were then placed in the dark for 24 hours, and why?
A
Green after being placed in the light because the plant would remove CO2 by photosynthesis; yellow after being placed in the dark because the plant would release CO2 by respiration.
B
Yellow after being placed in the light because the plant would release CO2 by photosynthesis; green after being placed in the dark because the plant could not photosynthesize in the dark.
C
Green after being placed in the light because the plant would remove CO2 by photosynthesis; green after being placed in the dark because no CO2 would enter the tube since it is air tight.
D
Yellow after being placed in the light because the plant would release CO2 by photosynthesis; yellow after being placed in the dark because no CO2 could leave the tube since it is air tight.
Answer:
A. Green after being placed in the light because the plant would remove CO2 by photosynthesis; yellow after being placed in the dark because the plant would release CO2 by respiration.
Explanation:
According to this question, Bromothymol blue (BTB) is a chemical that can be used as an indicator of the pH of a solution. The presence or absence of CO2 in a solution decreases or increases the pH of the solution respectively.
- BTB appears green in a neutral pH i.e. little CO2
- BTB turns yellow in a low pH i.e. high CO2
Plants, in the presence of light, will perform photosynthesis and use CO3 as a reactant while in the dark, will perform cellular respiration and release CO2 as a waste product. Hence, in this case where an aquatic plant was placed into a test tube and covered it to keep it air tight.
- When placed under light for 24 hours, the aquatic plant will undergo photosynthesis and remove CO2 from the solution to make the solution appear GREEN due to neutral pH.
- When placed in the dark for 24 hours, the aquatic plant will undergo cellular respiration and release CO2 into the solution making the solution appear YELLOW due to low pH.
In mice, black fur is dominant to white fur. Two mice with black fur are placed in the same cage and have several litters. Of all the offspring, 7 mice have white fur and 19 mice have black fur. Which of the following crosses could produce this combination?
Question 2 options:
a. BB x bb
b. Bb x bb
c. Bb x Bb
d. bb x bb
Answer:
I am unsure, but i would go with c.
Explanation:
We just finished learning about this in my class so it is pretty fresh in my mind i just had a little trouble with it when we did it.
Answer: it's most likely to be A.
The Sun is a fairly normal star.
True
False
Answer:
Yes.
Explanation:
The Sun is a medium sized star
What is the difference between speed and velocity in your own words?
Answer:
Explanation:
The difference between speed and velocity is that speed is a scalar quantity while velocity is a vector quantity.
hope this helps my friend
HELP PLEASE NEED ANSWER
Answer:
telophase
Explanation:
7. HELP URGENT BEAINLYWhat does most cell division produce?
Answer:
There are two mitosis and meiosis.
Name a storage protein in our bodies.
Explain the function of this storage protein in our bodies.
Where is this storage protein found?
please help
Answer:
Storage proteins serve as biological reserves of metal ions and amino acids, used by organisms. They are found in plant seeds, egg whites, and milk. Ferritin is an example of a storage protein that stores iron. Iron is a component of heme, which is contained in the transport protein, hemoglobin and in cytochromes.
Explanation:
Hope this helps.
Competition occurs when organisms try to use the same limited resource. True or False
Answer:
the answer is
true and this organism are called
inter specific organism
why did china remain isolated
Answer:
In the last 50 years or so of the Ming Dyansties, the emperor simply lacked the necessary resources and man power to sustain large amounts of trade, causing China to become isolated from the world.
Explanation:
Which are ways of showing probability? Select 4 options.
50%
557
3/4
1 x 10
25%
7/8
Answer:
50%
3/4
25%
7/8
Explanation:
Probability must be greater than or equal to zero and less than one.
Answer:
A,C,E,F
Explanation:
just took the test
Essential Question: Compare and contrast the structure and function of the major organelles found in plant and animal cells.
Answer: Structurally, plant and animal cells are very similar because they are both eukaryotic cells. They both contain membrane-bound organelles such as the nucleus, mitochondria, endoplasmic reticulum, Golgi apparatus, lysosomes, and peroxisomes. Both also contain similar membranes, cytosol, and cytoskeletal elements.
Explanation:
This is from google
What could a weather forecast on Mars be?
Answer:
Cold
Explanation
Weather conditions on Mars
Mars is an extremely cold planet with an average temperature around minus-80 degrees. Temperatures can dip to minus-225 degrees around the poles. Periods of warmth are brief — highs can reach 70 degrees for a brief time around Noon at the equator in the summer.
To test the validity of their data, scientists take what actions?
A. Repeat original experiments
B. Look for agreement in scientific journals
C. Form teams
D. Devise new experiments
In the periodic table, vertical columns are called periods.
TRUE
FALSE
Answer:
FALSE
Explanation:
In the periodic table, vertical columns are called GROUPS.
This is a FALSE statement
The horizontal rows on the periodic table are called periods.
Which of these is an example of a CLIMATE region zone?
A. tropical
B. foggy
C. overcast
D. sunny
Answer:
tropical
Explanation:
Answer: B foggy
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what happened to the red blood cells after the sugar was added to the solution
Answer:
Studies revealed that glucose binds with the RBC membrane and intracellular proteins and increases membrane rigidity. The thing is that the concentration of glucose in the solution used is less than compared to the concentration of the same inside RBC and the cells swell up due to endometriosis.
Which pieces of information do you need to locate a particular star on a star
chart?
Check all that are true.
A:the star's size
B:the star's right ascension
C:the star's declination
D:the star's magnitude
Answer:
B & C
Explanation:
RA is basically the time and longitude coordinates, and dec. is N/S coordinates.
If you were stuck on an island, (without any technology,) how would you ask for help?
Explain your answer’s reasoning. If you don’t, then briefly tell how you will live out your life on your island.
Answer:
I would gather up as many resources as I can and spell SOS On the island where they can seeit spelled and I would grab A pocket nife and shine in towards the boat,helicopter.etc
Explanation:
What is the material that allows plants to capture energy from the sun? How many different types of this material are there? (site 1)
Answer: The molecules of chlorophyll contained in the chloroplasts absorb energy in the form of light from the sun. This is the process called Photosynthesis, by which plants convert energy from the sun. It is the process that allows plants to create organic molecules that they use as fuel.
Explanation:
During the process of photosynthesis, plants capture light energy and use it to convert water, carbon dioxide, and minerals into oxygen (released into the air) and glucose (stored in the plant and used as food). The photosynthesis process occurs in all plants and algae, as well as in some bacteria species.
The picture shows a 3-D model of a virus called a bacteriophage. Bacteriophages can infect In what way are the bactenophage and E. coli alike? F. They contain antibodies. che produce by tutosis. H They have idenbekl genomes, The lack membrane-bound organelles. Students, dawanywhere on this slide!
Bacteriophage and E.coli are alike in the sense that they both lack membrane-bound organelles.
What are bacteriophage?Viruses that infect bacteria are called bacteriophage. The words bacteriophage mean "bacteria eater". Bacteriophages take over the machinery of host cells to produce copies of themselves and then destroy the host cell in the process.
Bacteriophages are composed of a supercoiled nucleic acid which is surrounded by a protein capsid.
A bacteriophage adheres to the surface the susceptible bacteria and injects its genetic material. This way they occupy the genetic machinery of the host and produce several copies of their own nucleic acid and also the protein capsid to surround it.
The result is the lysis of bacterial cell and release of thousands of bacteriophage viruses which are capable of infecting more bacteria in the same manner.
Bacteriophage are acellular structures lacking any membrane bound cell organelles. E.coli is a kind of prokaryotic bacteria which also lack membrane bound organelles.
Therefore, the correct option is D.
Read more about bacteriophage, here
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At very large distances from the Sun, its corona turns into the solar wind.
True
False
Answer:
the question really didnt make sense to me so false..
Explanation:
false
What is one way the body raises its temperature?
1. If you were a transformer, what vehicle would you turn into?
2. What laws would you abolish if you could? What laws would you create?
3. If you were a food, what food would you be?
4. What animal would be way better if it was covered in scales?
5. What would be your strategy for a zombie apocalypse?
6. If you could be the CEO of any company, what company would you choose?
Answer:
1. I would turn into Lambo (black and neon green)
2. I would abolish the laws that require children to go to school. I would create a law saying that you can't be a stuck up p*rv if you want to be president.
3. I would be bacon. Don't ask.
4. Hedgehog. ;-;
5. Break into Ariana Grande's house and protect her.
6. Amazon because Jeff Bezos is literally the RICHEST man in the world atm.
Sorry it took so long T^T
This was fun doee
PLEASE HELP ME!!! WILL MARK BRAINLIEST!
Which term best describes the reaction that makes pyruvic acid during cellular respiration?
A) exothermic reaction
B) endothermic reaction
C) physical reaction
D) digestive reaction
Answer:
d)
Explanation:
digestive reaction
list two examples of temporary change in human
Answer:
Being emotional
Frustrations about changes in bodies
Explanation:
During growth stage, there are certain changes that occurs, these changes are either permanent or temporary. Temporary changes are seasonal and end with time as one is transitioning whereas permanent changes like deepening of voice in boys remains and growth of breasts in girls are permanent
What produces hormones and lipids
Answer:
Most lipid hormones are steroid hormones, which are usually ketones or alcohols and are insoluble in water. Steroid hormones include estradiol, testosterone, aldosterone, and cortisol.
Explanation:
Answer:
SER (Smooth Endoplasmic Reticulum) is associated with lipids and hormones (like steroidal hormones)
what is the difference between cell structure and cell function?
Answer:
These cells have a membrane-bound nucleus that houses their DNA and contain extensive internal organelles (“little organs”) that perform specific functions. ... Differences occur in size, shape, and presence and number of various organelles and other structures. Each cell's structure correlates with its specific function.
Explanation:
Answer:
A cell can be defined as the smallest unit of life and an example include muscle cells. An aggregation of cells form tissues.
The major difference between a cell structure and cell function is in their functions and physical properties.
Cell structure: This talks about how the cells look like when viewed. A call contains components such as the nucleus, cytoplasm, cell membrane etc and each has their various functions to ensure the organisms/animals are able to perform various life activities.Cell function: This on the other hand refers to the various functions which a cell is able to perform and this is dependent on the component in question such as the nucleus which controls cell activities and cytoplasm which provides support and helps to house other organelles.
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A partial DNA sequence for normal hemoglobin and a partial DNA sequence for sickle-cell anemia are shown below. G-G-A-C-T-T-C-T-T Normal hemoglobin G-G-A-C-A-T-C-T-T Sickle-cell anemia Based on the DNA sequences, sickle-cell anemia is caused by A. a sex-linked trait. B. a dominant nucleotide. C. a mutation in the genetic code. D. an incomplete separation of chromosomes.
Answer:
C. a mutation in the genetic code.
Explanation:
A mutation refers to any change or alteration to the nucleotide sequence of a gene caused by mutagen or mistakes during replication. Depending on the manner of occurrence, mutation can be of different types. In this question, partial DNA sequence for normal hemoglobin is given as: G-G-A-C-T-T-C-T-T while the partial DNA sequence for sickle cell anaemia is given as: G-G-A-C-A-T-C-T-T.
From careful observation of the two two DNA sequences above, it can be realized that a SUBSTITUTION MUTATION from T to A has occurred in the sequence of sickle cell. Note that substitution mutation is the replacement of one base by another in a sequence.
how does an organism reproduce by budding
What is the probability of short beaks in the offspring of the cross show above
Answer:
8/16 or 1/2
Explanation:
This question is a dihybrid cross involving two genes, one coding for feather color and the other for beak length. The alleles for green feathers (G) and long beak (L) are dominant over the alleles for yellow feathers (g) and short beak (l).
According to this question, a male with genotype GGLl was crossed with a female with genotype Ggll. The following combination of gametes is produced by each parent:
GGLl - GL, Gl, GL, and Gl
Ggll - Gl, Gl, gl and gl
Using these gametes in a punnet square (see attached image), the following offsprings in the following proportions will be produced.
Green feathers, long beak (GGLl, GgLl) = 8/16 or 1/2
Green feathers, short beak (GGll, Ggll) = 8/16 or 1/2
Hence, the probability of short beaks (ll) in the offspring of the cross is 1/2.