Answer:
When hydrogen peroxide is added to a chicken liver sample exposed to lemon juice the chemical reaction will be slower and appear some bubbles within the first minute (option B).
Explanation:
The liver contains an enzyme called catalase, whose function is the degradation of hydrogen peroxide (H₂O₂), an intense reaction that produces gas and heat. The activity of this enzyme must occur at an appropriate pH, so changes in pH can affect the activity of catalase.
Under normal conditions, when a liver sample is exposed to H₂O₂, bubbles and foam appear in the sample as a result of the catalase reaction. When the chicken liver sample is subjected to the acidic lemon juice, the reaction will occur, but more slowly.This is because the activity of the catalase enzyme, present in the liver, continues to occur —although it decreases— and will form few bubbles over a longer period of time.
The other options are not correct because:
A. At a lower pH, the reaction will not form many bubbles.
C. Even if the reaction is minor, and produces very few enzymes, it will always occur.
D. Although the catalase/H2O2 reaction produces heat, it is impossible for the liver to catch fire and cause evacuation from the school, even less so with a reaction whose speed has been slowed down.
7(b). State a difference between boiling and evaporation.
Answer:
Evaporation is a regular process that occurs when the liquid form changes into the gaseous form; while causing a increase in the pressure or temperature. Boiling is an unnatural process where the liquid gets heated up and vaporized due to continuous heating of the liquid.
Explanation:
hope this helps
What characteristic defines this organism as eukaryotic
a.
ability to move
c.
ability to repond
b.
presence of a nucleus
d.
irregular shape and size
Answer:
b
Explanation:
its an organism consisting of cells in the form of chromosomes with a distinct nucleus.
Explain life cycle of bryophytes with example?
Please mark as Brainliest .......
Explanation:
Yes it is your answer I think it will help you
all living things contain carbon.which of the following statements is true about carbon atoms?
I. Each carbon atom can form single bonds with up to four other carbon atoms. II. Each carbon atom can form double bonds with up to two other carbon atoms. III. Carbon atoms can join together to form chains or rings. IV. A single molecule of some compounds can contain thousands of carbon atoms.
Answer:
All the given choices
Explanation:
Carbon is a very interesting element which is the backbone of most organic compounds.
Organic compounds are made up of carbon. Carbon forms a wide range of compound due to the following properties;
An atom of carbon has 4 valence electrons and can bond with 4 other carbon. Carbon can form single, double and triple covalent bonds. They can join together to form rings or chains.How do stars produce energy through nuclear fusion
Answer: Stars produce energy from nuclear reactions, primarily the fusion of hydrogen to form helium. These and other processes in stars have lead to the formation of all the other elements.
Based on the diagram shown above the Glycolsis, briefly describe the first step of cellular respiration, emphasizing the location, raw materials needed and the end products.
Answer:
Glycolysis takes place in the cytosol which is part of the cytoplasm of the cell. Glucose is rearranged and phosphorylated to form F-1,6BP(fructose 16 bisphosphate which is very unstable) its splits into 2 phosphorylated 3C sugars (DHAP and G3P)(can interconvert) both form G3P to enter 3rd phase, G3P converted into pyruvate creates 4 ATP in total but has a net of 2 ATP and creates NADH. The raw materials needed are two molecules of NAD+ per glucose as well as 2 ATPs. Hope this helps!
Explanation:
The two amino acids animated above are joined together by a
molecule of
in the process.
and form a
DONE
Intro
Answer:Peptide Bond and Water
Explanation:
The two amino acids animated above are joined together by a peptide bonds.
What do you mean by peptide bond?Along a peptide or protein chain, a peptide bond is an amide-type covalent chemical bond that connects two consecutive alpha-amino acids from C1 of one alpha-amino acid to N2 of another.
A covalent bond between two amino acids is known as a peptide bond. Peptide bonds are used by living things to make long chains of amino acids called proteins. Proteins play a variety of roles, including providing structural support, catalyzing crucial reactions.
When the carboxyl group of one molecule reacts with the amino group of the other molecule, a molecule of water H20 is released, forming a peptide bond between the two molecules.
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1. (4 pts) What stages of Mitosis were you able to identify in the prepared slide? (include snips of sketches)
2. (4 pts) What stages of Mitosis were you able to identify in the slide you prepared? (include snips of sketches)
3. (4 pts) Which stage of mitosis was easiest to identify and which was the hardest?
4. (4 pts) What stages might cells be in if they are not obviously dividing?
5. (4 pts) Why is it important to understand mitosis and how it works in your cells?
6. (10 pts) List one disease you think involves a problem of some sort with mitosis? Describe the disease, it's symptoms, and any possible treatments.
Answer:.
Explanation:
-
What does a plant need to take in from the environment to live?
Answer:
Water sunlight nutrients
Explanation:
please help Which diagram illustrates metaphase? A B C D
C diagram best illustrates metaphase.
What is mitosis and its stages?Prophase, metaphase, anaphase, and telophase are the four stages of mitosis.
1) Prophase: chromatin forms chromosomes, the nuclear envelope breaks down, and chromosomal centromeres bind to spindle fibers.
2) Metaphase: the chromosomes align on the metaphase plate (center of the cell)
3) Anaphase: sister chromatids are drawn to opposing poles of the cell;
4) Telophase: nuclear envelope recovers, chromosomes unroll into chromatin, and cytokinesis can begin.
hence A shows anaphase, B shows prophase and D shows telophase and cytokinesis
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what travels through the nucear pores?
Answer:
molecules
Explanation:
Nuclear pore complexes allow the transport of molecules across the nuclear envelope.
Answer:
Molecules
Have a good day!
What chemical digestion occurs in the stomach? PLZZZZZ HELP MEEE with BIOLOGY!!!!
Answer:
Explanation:
Protein digestion occurs in the stomach and the duodenum through the action of three main enzymes: pepsin, secreted by the stomach, and trypsin and chymotrypsin, secreted by the pancreas. During carbohydrate digestion the bonds between glucose molecules are broken by salivary and pancreatic amylase.
Albinism is a recessive genetic condition in which a person lacks pigment that gives color to the skin. If the allele for albinism is represented as "a," and the functional allele is represented as "A," what will be the genotype of a person with albinism?
Answer:
The correct answer would be - "aa".
Explanation:
Albinism is an autosomal recessive genetic condition which means it will be expressed only if both alleles for the pigmentation are recessive. If a single copy of the dominant allele present with the recessive allele the expression of the recessive allele would be masked by it and skin will be pigmented however they will act as carriers of the condition.
There would be three condition or three allele combination:
AA - no recessive allele so no albinism
Aa - dominant allele with recessive allele which means carrier but pigmented skin
aa - both alleles are recessive so the albinism will be expressed.
Facts about Reservoir 2 facts please !!
Answer:
A reservoir is a lake that is usually man-made and is used to store water
Tanisha says that the Moon looks dark from Earth when the Moon is in two different places: always when it is closest to the sun, as in Top View #1, and always when it is furthest from the sun, as in Top View #2. Is Tanisha correct? If she is correct, explain why the Moon always looks dark from Earth in both of these positions. If she is incorrect, explain when the Moon looks dark from Earth and how the light on the Moon should look in each of Tanisha’s diagrams.
Tanisha is wrong in her conclusion ( i.e. the moon will appear dark only when it is behind the earth ( furthest away from the sun ) )
The moon gets its light from the sun and the closer the moon is to the sun the more light it gets and is has to be positioned in-between the sun and the earth to have such light rays as well.
When the moon is furthest from the sun it will be positioned behind the sun ( i.e. the earth is in-between the sun and the moon ). during this period the moon will appear dark because the Earth been bigger than the moon sheds away light rays coming from the sun towards the moon.
Hence we can conclude that Tanisha is wrong in her conclusion.
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Jade described one of the components of weather as follows:
It drops as you go higher.
It is usually higher on summer days.
Its low and high are usually shown on weather map.
Which weather component is Jade describing?
Air temperature
Humidity
Precipitation
Wind speed
Answer:
Air temperature
Explanation:
Air temperature is being described by Jade according the properties highlighted.
The degree of hotness or coldness of a body is known as its temperature.
As you go higher it becomes cooler. The surface causes the warming of the air around. With height, the surface is distant from the body of air. On summer days, air temperature is higher due to more insolation. Weather maps gives a good description of air temperature from places to places.[tex]\mathrm {Hey, there!}[/tex]
Your answer is: air temperature
Air temperature drops as you go higher above.Air temperature is Higher on sunny days.Air temperature's low and high are usually shown on weather map.The answer is air temperature.
Gene, DNA, cell Cell Membrane, Cell Wall, Chromosomes, and Nucleus in order from small to large
Answer:
DNA, Gene, Chromosome, Nucleus , Cell membrane, cell wall , cell
How is osmosis defined
A- as active transport
B- as requiring a transport protein
C- as an example of facilitated diffusion
D- as diffusion of water through a selectively permeable membrane
The pedigree below traces the inheritance of alkaptonuria, a biochemical disorder. Affected individuals, indicated here by the colored circles and squares, are unable to metabolize a substance called alkapton, which colors the urine and stains body tissues.
Wish you a GREAT Thanksgiving :)
Which statement best describes the Earth’s energy budget?
The temperature increases when energy in is greater than energy out, and temperature decreases when energy out is greater than energy in.
The temperature decreases when energy in is greater than energy out, and temperature increases when energy out is greater than energy in.
Energy in never equals energy out.
Energy in and energy out are unrelated.
Answer:
Earth's energy budget accounts for the balance between the energy that Earth receives from the Sun, and the energy the Earth radiates back into outer space after having been distributed throughout the five components of Earth's climate system. This system is made up of Earth's water, ice, atmosphere, rocky crust, and all living things. Read It And Get your answer
Explanation:
Answer:
Its either A or B Sorry if im wrong
Explanation:
Have a good day!
what are the components of photosystem 1
Answer:
Photosystem I of Synechococcus elongatus consists of 12 protein subunits, 96 chlorophyll a molecules, 22 carotenoids, three [4Fe4S] clusters and two phylloquinones. Furthermore, it has been discovered that four lipids are intrinsic components of photosystem I
Why are the processes of oxidation and reduction important to cellular respiration?
Answer:
During aerobic respiration, oxygen is reduced, donating an electron to hydrogen to form water. The entire process of cellular respiration oxidizes glucose. This produces the majority of the energy released in cellular respiration
Explanation:
im taking the same thing :)
Explain positive climate feedback and negative climate feedback
Climate feedbacks: processes that can either amplify or diminish the effects of climate forcings. A feedback that increases an initial warming is called a "positive feedback." A feedback that reduces an initial warming is a "negative feedback."
HOPE THIS HELPED <3
Answer:
Climate feedback: processes that can either amplify or diminish the effects of climate forcings.
Explanation:
A positive feedback accelerates a temperature rise, whereas a negative feedback decelerates it.
Which of the following activities is most likely to result in nutrient pollution?
a. cutting down trees
b. pouring motor oil down the drain
c. excess fertilizer use
d. none of the above
Answer:
a or c
Explanation:
Most likely c
Good luck!
Answer:
C. excess fertilizer use
Explanation:
PLS HELP
Explain how a compound microscope allows you to see magnified images.
Answer:
The classic compound microscope magnifies in two steps : first with an objective lens that produces an enlarged image of the object in a "real" image plane. This real image is then magnified by the ocular lens or eyepiece to produce the virtual image. Two convex lenses can form a microscope.
Explanation:
Answer:
it has multiple magnifying glasses in the scope.
Explanation:
A compound light microscope uses two lenses at the same time to view objects-the objective lens, which gathers light and magnifies the image of the object, and the ocular lens, which one looks through and which further magnifies the image. ... it also allows light to pass to the ocular lens.
In a complex multicellular
organism, what will happen if
a single cell's organelles stops
functioning?
A. The cell replaces the organelle by
taking from another cell.
B. The cell will continue to function as it is
Just one of many cells.
C. The cell will most likely die.
Answer:
the cell will eventually be replaced
Explanation:
it will be replaced since the specialization of a multi celular organism is that they live longer than the single celled organisms
The uterus has a thick, muscular wall. What function does this feature most likely support? A. It can contract to push eggs through the fallopian tubes. B. It helps the fertilized egg attach to the uterine wall. C. It provides protection for the developing fetus. D. It provides a site for the egg cells to mature and be released. Reset Next
Answer:
C
Provides protection for the developing fetus
Explanation:
Just took this test twice and all the answers across brainly was wrong, hope this helps!
Plants are different from animals because
Answer:
Plants and animals share many characteristics, but they are different in some respects. Animals usually move around and find their own food, while plants are usually immobile and create their food via photosynthesis. ... Animal cells absorb nutrients from food, while plant cells use plastids to create energy from sunlight.
Explanation:
HOW ARE VIRUSES AND ARCHAEA DIFFERENT
Answer:
Virus and Bactria are different from each other as: Virus are smaller than bacteria. Virus are non-living whereas bacteria are living. Viruses use host genome machinery for cell division and bacteria proliferate on their own.
Hope that helps. ( kid copied me) its ok
Explanation:
Predict which temperature 20 degrees Celsius, 39 degree Celsius, 50 degree Celsius you would expect a human to function best. Plan a simple investigation to test your hypothesis
Answer:
39 degree Celsius
Explanation:
Human body functions well at 36 degree Celsius. All the body functions and the enzymes secretion and processes works best on the temperature 36 degree Celsius.
The enzyme of humans will function good on temperature 39 as it is the very near to the body temperature of the human. The optimal temperature would be between temperature 35 to 40 degrees for most of the enzymes.
Testing hypothesis :
Add amylase which is an enzyme present in the saliva to a concentration sugar, which acts as the reactant in a small container having a lid. Use a thermometer to mark the changes in the temperature. We have to take two identical samples of our experiment. Place one sample at a room temperature of 25 degree Celsius and the other to be heated to 40 degree Celsius. Now we have to check the concentration of the product for each temperature. And while checking the sample which is heated, we see that at some point, the rate where the substrate is being converted in to product decreases as the enzyme denaturation and the reaction will stop. The optimal temperature is the one where the product is produced at the maximum rate.