Answer:
Kindly check explanation section.
Explanation:
So, let us dive straight into the solution to this particular Question or problem. We are asked to explain the phenomenon in each case.
(1). Expansion occurs at the surface of a pond water when it freezes at 0°C thus creating higher density for the (liquid) water at below the iced surface.
(2). When sugar is put in water it does not ionized but only dissolved as a molecule, therefore, sugar is a weak electrolyte.
(3). Cell membranes are made of phospholipids and proteins because phospholipids as far will not want to mix with water, also movement of molecules is done by the presence of protein.
(4). The witches cell membranes does not have phospholipids which makes it to have little adhesion force and this was the prime factor in the dissolving of the witch by water. The cell membrane contain nonfatty components.
(5). The statement is true, and this is a phenomenon refer to as the Mpemba effect that is to say when one cools down hot water it looses some of it mass(reduces the quantity of water) and this is due to evaporation. Thus, as the quantity of water reduced, freezing becomes faster.
(6). Heavy water is D2O while normal water is H2O. Where D in D20 means Deuterium which is heavier than Hydrogen atoms in heavy water.
Which of the following statements about enzymes is false?
А Enzymes are made up of amino acids.
B Enzymes make otherwise slow reactions proceed more quickly.
C Enzymes provide energy for endergonic reactions.
D. Enzymes are usually specific for the chemical reactions they catalyze.
The false statement about enzyme is - option C. Enzymes provide energy for endergonic reactions.
Enzymes are protein acts as biological catalysts. Enzymes increase the rate of reactions by lowering the activation energy.
Enzymes are made from amino acids. The chain of amino acids then folds into a unique shape.These are specific for the chemical reactionsEnzymes are biological catalysts that increase the rate of chemical reactions inside cells by lowering the activation energy therefore can not provide energy.Enzymes make slow reactions proceed more quickly.Thus, the false statement is - option C.
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How could research on mice or rats help answer our medical research questions — questions that are, after all, about humans?
Answer:
you could disect them or observe what they do by doing things like putting them in a maze or seeing what they do in front of a mirror.
Explanation:
Gold is found mostly in igneous or metamorphic rocks. When water acts upon these rocks, gold may be carried and distributed to streams.
Which process is responsible for the distribution of gold in this case?
A)
a biological process
B)
a metamorphic process
C)
a sedimentary process
D)
human activity
E)
volcanic activity
HELP will give brainlst and 20 points if ur correct
Explain how scientist measure geologic time.
Answer: Layered rocks and evolution of life and radiometric time scale based on radioactivity of chemical elements
Explanation:
Two scales are used to date these episodes and to measure the age of the Earth: a relative time scale, based on the sequence of layering of the rocks and the evolution of life, and the radiometric time scale, based on the natural radioactivity of chemical elements in some of the rocks.
What enzyme catalyzes the reaction in the Calvin cycle?
Answer:
ribulose bisphosphate carboxylase (RuBisCO)
Explanation:
The Calvin cycle is a process utilized to ensure carbon dioxide fixation. ... The carbon dioxide is combined with ribulose 1,5-bisphosphate to form two 3-phosphoglycerate molecules (3-PG). The enzyme that catalyzes this specific reaction is ribulose bisphosphate carboxylase (RuBisCO).
Answer:
ribulose bisphosphate carboxylase
The enzyme catalase is important to many organisms. This enzyme convertshydrogen peroxide, which can be toxic to cells,to oxygen and water. The optimum pH at which it functions is 7.0. If the pH changes too much in either direction. the function of catalase decreases. Which is TRUE about catalase ?
Catalase is a nucleic acid.
catalase is affected by pH as it is a protein.
Catalase can vaporize at room temperature.
Catalase is a carbohydrate
Answer:
yes
Explanation:
catalase is a carbohydrate
There are three semicircular canals per ear.
True
O False
Qui
Which of the following is a function of nucleic acids?
a. Nucleic acids provide energy.
b. Nucleic acids store fatty acids.
c. Nucleic acids store and transmit genetic information.
d. Nucleic acids manufacture simple sugars,
Answer:
I belivie is C) Nucleic acids store and transmit genetic information
good luck ;)
Describe what happens in your central nervous system when you prepare and eat breakfast. Start with objects in the environment and be specific.
Answer:
CNS controls eating by homeostatic mechanisms that interact with different cognitive control systems (e.g., memory, reward, attention, etc)
Explanation:
In the brain, eating control is modulated by different systems:
1- Homeostatic control: the hypothalamus plays a key role by controlling both the appetite and food intake
2- Attention: the parietal and visual parietal cortices are involved in sensory perception and integration
3- Emotion and memory: amygdala and hippocampus
4-Cognitive control: the prefrontal cortex (i.e., executive functions)
5-Reward: associated with the functioning of the striatum
In the first place, external signals such as, for example, neurotransmitters and hormones, are received by the hypothalamus that interacts with different systems (reward, emotion, memory) in order to achieve a homeostatic control of eating. Neuronal stimulation (for example, when we view foods), is achieved by the supply of oxygenated hemoglobin.
true or false all cells living or dead can produce new living cells
Answer:
TRUE!
Scientist use dead cell embryos to produce living cells
All cells living or dead cannot produce new living cells. Only the living cells can produce new cells. Therefore, the given statement is false.
What is Cell division?Cell division is the process by which a parent cell divides into two new daughter cells. Cell division usually occurs as a part of a larger cell cycle in which the living cell grows and replicates its chromosome before undergoing division.
Cell division occurs in living cells through mitosis and meiosis. The cell division occurs through karyokinesis and cytokinesis. Cell division is a part of the cell cycle. Cell cycle is divided into different phases such as G1 phase, S phase, G2 phase, and M phase.
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what shoukd the patient expect to experience living with the disease- Sitius Inversus?? in ur own words
Answer:
there is a complete mirror image transposition of the thoracic (chest) and abdominal organs , and anterior-posterior (front-back) symmetry is normal. Many affected people have no associated health issues when the condition is isolated.
Explanation:
which kingdoms contain organisms that are multicellular You by bacteria archaea bacteria plant Amenia
Answer:
(B and (C
Animalia and Plantae
Explanation:
Got it right on edge (:
The kingdoms that contain organisms that are multicellular are Plantae, Animalia, and Fungi.
What are multicellular organisms?Multicellular organisms are living beings that comprise cells, they represent the prevailing form of life, on our planet encompass a range of organisms such, as plants, animals, fungi and certain protists.
The emergence of organisms has bestowed benefits compared to their unicellular counterparts. Notably their ability to achieve sizes and intricate complexities sets them apart.
Moreover multicellular organisms possess the capability to differentiate their cells for functions. This adaptability enables them to thrive in environments and enhances their edge in securing vital resources.
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DATA ANALYSIS
% OF CELLS IN EACH PHASE OF THE CELL CYCLE
90
30
20
GO
30
40
30
20
10
INTERPHASE
PROPHASE
METAPHASE
ANAPHASE
TILOPHASE CTO NESS
Image or Sketch
Description
Interphase
Prophase
Answer:
A __________________ is a place holder or object where you can store a value or piece of data named by you
DNA libraries are useful for identifying and isolating eukaryotic DNA fragments of interest in research. Select the ways in which genomic and cDNA libraries differ.
a. Genomic libraries are difficult to express in prokaryotic cells, which lack a splicing mechanism.
b. cDNA libraries contain only the sequences from genes that are expressed in an organism.
c. cDNA libraries are the DNA fragment collections that are stored and propagated in host cells through cloning.
d. cDNA libraries contain more sequence information than genomic libraries.
The ways in which genomic and cDNA libraries differ is that the Genomic libraries are difficult to express in prokaryotic cells, which lack a splicing mechanism. Thus, the correct option for this question is A.
What do you mean by Genomic libraries?Genomic libraries may be defined as a group of overlapping segments of genomic DNA that is significantly cloned into a backbone vector, which statistically includes all regions of the genome of an organism efficiently in order to function normally.
On contrary, cDNA libraries may be characterized as the collection of cloned DNA sequences that are complementary to the mRNA and were remarkably extracted from an organism or tissue in order to stimulate its function.
Therefore, genomic libraries are difficult to express in prokaryotic cells, which lack a splicing mechanism is one of the ways in which genomic and cDNA libraries differ.
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Which of the following is not a process that occurs during cytokinesis of an animal cell?
(Please help I will mark brainliest)
A. Cytoplasm is divided
B. Nucleus reappears
C. Chromosomes line up at the metaphase plate
D. Nuclear envelope surrounds chromosomes
Chromosomes line up at the metaphase plate is the process that is not happen during cytokinesis.
What is cytokinesis?Cytokinesis is the process of cell division in which the cytoplasm of a parental cell divides into two daughter cells. It occurs in both mitosis and meiosis type of cell division so we can conclude that Chromosomes line up at the metaphase plate is the process that is not happen during cytokinesis.
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Chromosomes lining up at the metaphase plate is not a process that occurs during the cytokinesis of an animal cell (Option C). It is part of mitosis.
What is cytokinesis?Cytokinesis is the cellular process by which the cellular cytoplasm separates to form two different daughter cells.
Chromosomes line up at the metaphase plate during the process of cell division (metaphase step of mitosis).
Mitosis can be sequentially divided into prophase, metaphase, anaphase, and telophase.
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Diagram 1 shows the tilt of Earth's axis. Diagram 2 shows how Earth would look if the tilt of the axis were increased. Each diagram shows the same two locations, Location X and Location Y. Sun Y X- um Earth Diagram 1 Sun •Y X- Swi Earth Diagram 2 Which statement BEST predicts the effect of increasing the tilt of Earth's axis in Diagram 2 on the two locations? Location Y will be cooler in winter and Location X will be cooler in summer. Location Y will be warmer in winter and Location X will be cooler in summer, Location Y will be cooler in winter and Location X will be warmer in summer. Location Y will be warmer in winter and Location X will be warmer in summer. PLEASE HELP MEEEEE
Answer:
confused
Explanation:
Community redevelopment programs are primarily directed towards _______. a. preventing pollution in commercial and residential properties b. improving property values by eliminating blighted buildings c. establishing basic sanitation in urban environments and communities d. cleaning up abandoned, unused, and polluted properties
Answer:
D
Explanation:
Community redevelopment programs are primarily directed toward cleaning up abandoned, unused, and polluted properties (Option d).
What are community redevelopment programs?The community redevelopment programs are useful platforms to generate benefits for the whole society.
The community redevelopment programs can be derived from governmental and non-governmental public policies.
These programs are fundamental for reaching the well-being of a community and its citizens.
In conclusion, community redevelopment programs are primarily directed toward cleaning up abandoned, unused, and polluted properties (Option d).
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Which is a common mistake to watch out for when taking a test?
reading test directions
rushing through the test
checking that answers are legible
showing all work
Answer:
Rushing through the tests B.
Explanation:
Answer:
The answer you are lookin for is B
Explanation:
How does the storage of energy in ATP molecules benefit a cell?
Answer:
ATP. Specifically, during cellular respiration, the energy stored in glucose is transferred to ATP (Figure below). ATP, or adenosine triphosphate, is chemical energy the cell can use. It is the molecule that provides energy for your cells to perform work, such as moving your muscles as you walk down the street.
Explanation:
When you get home from school, you decide to make some ramen noodles for an after school snack. You notice that the pack of ramen calls for 3 cups of water per pack. You add and heat up the water and you dump your ramen in the pot. You let the ramen noodles cook in the water for 5 minutes. As your are straining your ramen noodles, you notice the noodles are larger and there is less water in the pot. Explain what process just happened and why. How does this relate to the process of
cell?
Answer:
Osmosis.
Explanation:
Osmosis occurs in the noodles because the water moves inside the noodles which make them swells. Osmosis is a process in which particles moves from the external environment into the cell through a semi permeable membrane. The water present goes inside the noodle and the noodles increases in size just like cells when the water moves inside the cell it swells due high concentration of water.
Answer:
osmosis
Explanation:
This diagram shows a plant cell. Which of these statements about plant cells must be true?
A)
A plant cell does not have a nucleus.
B)
Plant cells are all the same exact size and shape.
C)
A plant cell has many smaller vacuoles.
D)
A plant cell contains one large vacuole.
Answer:
I think the answer is a plant cell contains one large vacuole in its wrong because they have a nucleus I did not all plants have the same size or shape and they only have one large vacuole or sap vacoule hope it helps
Answer:
Its d
Explanation:
6 POINTS! What is the difference between animal and plant cells in a simple sentence?
Animal cells do not have a cell wall, while plants don't. They both have different sizes, shapes, components, energy storages, and the amount of proteins.
Which conditions need to be in balance for cells to function? Check all that apply.
Describing Uses for Mercury
Visit this website and locate the element mercury, whose chemical symbol is Hg. Click on the square to read about the history, properties, and uses of mercury.
Name three uses for mercury.
Answer:
Mercury is used for making thermometers,advertising signs, and mercury switches.
Explanation:
hope this helps! :)
Answer:
thermometers, barometers, diffusion pumps, and other laboratory instruments
pesticides, dental preparations, batteries, and catalysts
Explanation:
I need a media article, about science, that seems like bs. More about sex or anything along those lines? I need to debunk it. But that article has to be based off an actual scientific experiment with a published paper. Does anyone have any articles?
What happens at the Pacific Ring of Fire?
Answer:
THE PACIFIC RING OF FIRE Is an area around the pacific ocean with a lot of volcanic activity. magma is under the surface and lava is above the surface.
The Ring of Fire is home to 75% of the world's volcanoes and 90% of its earthquakes. This movement results in deep ocean trenches, volcanic eruptions, and earthquake epicenters along the boundaries where the plates meet, called fault lines.
so in conclusion in the pacific area there is basically a lot of volcanic activity
hope it helps
its all i could think of : )
Explanation:
PLS ANSWER FAST! Which of these descriptions best contrasts safety knowledge for cows and horses? Horses have a definite flight zone, whereas cows do not Cows will startle at sudden movement or noise. but horses do not. Cows have 360-degree vision, but horses do not Cows have a definite flight zone, whereas horses do not.
Answer:
the descriptions best contrasts safety knowledge for cows and horses is the description that says "Cows have 360-degree vision, but horses do not Cows have a definite flight zone, whereas horses do not"
Explanation:
For horses, the size of the flight zone depends primarily on the tameness or familiarity of the horse with the handler. With frequent handling, the flight zone decreases in size and may even disappear. A horse that is approached head-on has a larger flight zone than if it is approached from the side.
When moving groups of cattle in open spaces. The flight zone is the animal's personal space, and the size of the flight zone is determined by the wildness or tameness of the animal. Completely tame animals have no flight zone and people can touch them.
Answer:
It's A
Explanation:
Which of the following is an example when an uncontrolled experiment is best?
When testing the effect of water on a lawn
When working with the human body
When testing the effect of sugar on a starch
When testing plant growth
Answer:
When working with the human body , I had the test so..
Explanation:
Uncontrolled: If an extraneous variable is not controlled for (held constant) its effects become confused with or confounded with the effects of the independent variable. It then has an unwanted effect on the dependent variable and is termed a confounding variable .The researcher can no longer draw conclusions regarding the causal
Why are stem cells important to multicellular organisms?
Answer:The fabulous ability of an embryo to diversify and of certain adult tissues to regenerate throughout life is a direct result of stem cells, nature's gift to multicellular organisms.
Explanation:
Which means of particle transport is shown in Figure 7–4 below?
The figure shows the inside of a cell, the cell membrane, and the outside of the cell. Inside the cell, 15 spheres are labeled “high concentration.” Outside the cell, three spheres are labeled “low concentration.” A sphere enters a figure labeled “transport protein” that spans the cell membrane. An arrow shows that the sphere is moving from outside of the cell into the cell. A lightning bolt-shaped arrow is labeled “energy” and points to the transport protein.• A shaded hemisphere is shown at the top of the illustration titled 'Inside of Cell.' In the hemisphere are sixteen small spheres labeled 'High Concentration.'
• At the bottom of the illustration is the label 'Outside of Cell' on the unshaded part of the image. There are three small spheres labeled 'Low Concentration' in this area.
• A curvy horseshoe looking shape labeled 'Transport Protein' is shown entering the inside of the cell and has an upward arrow labeled on it.
• A small sphere is at the bottom of the curvy horseshoe shape with a jagged arrow next to it labeled 'Energy.'
A. diffusion
B. osmosis
C. facilitated diffusion
D. active transport
Answer:
The answer is D
Explanation: