Answer:
A control group in a scientific experiment is a group separated from the rest of the experiment, where the independent variable being tested cannot influence the results.
Explanation:
How is the rate of a chemical reaction related to temperature
Answer:
An increase in temperature typically increases the rate of reaction.
Explanation:
An increase in temperature will raise the average kinetic energy of the reactant molecules. Therefore, a greater proportion of molecules will have the minimum energy necessary for an effective collision
Cell division is an essential stage, and eventual result, of every organic cell cycle. What are the different types of cell division? How do they differ from each other?
Which of the following is/are example(s) of lymphocytes?
1) antibodies
2) B-cells
3) T-cells
4) T and B-cells
Answer:
4) T and B-cells
Explanation:
Which type of weather do we associate with low pressure systems? (select all that apply)
a
happy weather
b
clear skies
c
sunny days
d
lousy weather
e
rain
f
clouds
Answer:
F
Explanation:
Low-pressure systems are associated with clouds and precipitation that minimize temperature changes throughout the day, whereas high-pressure systems normally associate with dry weather and mostly clear skies with large diurnal temperature changes due to greater radiation at night and greater sunshine during the day.
How are metamorphic rocks formed
Hey friend your ans is here
I hope it will helpful for you
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Thank you
Answer:
Metamorphic rocks are formed from other rocks that are changed because of heat or pressure.. Earth movements can cause rocks to be deeply buried or squeezed. As a result, the rocks are heated and put under great pressure . They do not melt, but the minerals they contain are changed chemically, forming metamorphic rocks.
hope this helped you
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Which organelle makes proteins using coded instructions that come from the nucleus
Answer:
Ribosome
Explanation:
Ribosomes are small particles made up of RNA and protein that produce proteins following coded instructions that come from the nucleus
How would the contractile vacuole of a freshwater amoeba respond if the organism was placed in seawater?
with more contractions
with fewer contractions
the contractions would suddenly cease
with the same frequency of contractions
Answer:
the answer is B, with fewer contractions
Explanation:
The contractile vacuole of a freshwater amoeba responds if the organism was placed in seawater having fewer contractions.
Impact on the contractile vacuole:In the case when the freshwater amoeba should be placed in the seawater so the seawater should be hypertonic the water and flow out of the cell.
Due to this, the contractile vacuole will become more contracting to release water.
hence based on this, The contractile vacuole of a freshwater amoeba responds if the organism was placed in seawater having fewer contractions.
Learn more about water here: https://brainly.com/question/21488442
Which of the following structures serve as the cells boundary form it’s environmen
Answer:
The cell membrane
Explanation:
The cell membrane, sometimes also known as the plasma membrane, serves as a clear boundary between the inside of a cell and its outer environment.
What 3 things DNA made up of
Because water does not change temperature rapidly it is an important factor in
helping organisms maintain homeostasis.*
true
false
What are the reactants of water(it says there is two reactants just don’t know what they are
What is the function of proteins in muscles?
Answer: Muscle is a soft tissue found in most animals. Muscle cells contain protein filaments of actin and myosin that slide past one another, producing a contraction that changes both the length and the shape of the cell
Explanation:
A student wants to see how temperature affects the
production of gases when yeast and water are mixed. She
mixes them at different temperatures in clean soda
bottles. She then places a balloon over the top of each
bottle.
which statement best describes the use of the balloons in this experiment?
A. It is imaginative, because it makes the experiment feel like a party
B. It is creative, because it allows the student to add color to the
experiment
c. It is logical, because it allows the student to catch any invisible
gases given off
O D. It is biased, because it means that not all the variables are properly
controlled
Answer:
The answer is c, your welcome;)
Explanation:
Answer: Is is logical, because it allows the student to catch any invisible gases off
Explanation:
I'm taking the test right now and got it right
Which correctly lists three tools that are currently used to collect images during space exploration? rover, satellite, space station orbiter, space station, space shuttle satellite, rover, orbiter space shuttle, space station, rover
Answer:
rover, satellite, space station
Explanation:
Which correctly lists three tools that are currently used to collect images during space exploration?
rover, satellite, space station
orbiter, space station, space shuttle
satellite, rover, orbiter
space shuttle, space station, rover
A is the correct answer for this Question
Answer:
A
Explanation:
rover, satellite, space station
2. Describe the property of water that is indicated
by the data. How is this property explained by the
structure of water molecules and the bonds
between them?
Answer:
The correct answer is - high specific heat.
Explanation:
Water atoms are polar, so they structure hydrogen bonds. This gives water remarkable properties, for example, a moderately high specific heat, density, adhesion, and cohesion.
A water particle comprises of two hydrogen iotas clung to an oxygen molecule, and its general structure is bowed. Oxygen even bonding with hydrogen have two sets of unshared electrons. The entirety of the electron pair and unpaired repulse one another.
Water's high specific heat is a property brought about by hydrogen holding among water particles. At the point when warmth is assimilated, hydrogen bonds are broken and water atoms can move uninhibitedly. At the point when the temperature of water diminishes, the hydrogen bonds are shaped and discharge a lot of vitality.
Thus, the correct answer is - high specific heat.
The property of water described by the heating curve is high specific heat capacity.
The specific heat capacity of a substance refers to the quantity of heat required to raise the temperature of 1 Kg of the substance by 1°C. The higher the heat capacity of a body, the greater the quantity of heat required to raise the temperature of 1 Kg of the substance by 1°C.
Looking at the heating curve, we can see that water has a very high heat capacity because a large quantity of heat is required to raise its temperature by 1°C. This is because of strong intermolecular hydrogen bonding between the molecules of water which leads to molecular association and high boiling point.
Learn more: https://brainly.com/question/8155254
According to the flow chart, if blood glucose is low, insulin is not released into the bloodstream, and
Answer:
Glucagon is secreted
Explanation:
Glucagon is an hormone secreted by the alpha cells of the pancreatic islets. It is secreted when the blood glucose is low, when the blood glucose is high, glucagon is not secreted.
Glucagon affects the liver and some other cells but has more effect on the liver.
It allows for the release of glucose stored up in the liver cells into the blood stream to increase blood glucose.
The science of the classification of organisms is
???
Answer:
Taxonomy. Quick google search. :)
Explanation:
An enzyme known as amylase is found in the saliva of humans. This enzyme helps to begin the process of digesting starch molecules in the foods we eat. Which of these BEST describes how enzymes like amylase help in the process of digestion? (AKS 1a1) Question 2 options: Amylase contains the DNA molecules necessary to assemble the proteins needed for digestion. Amylase is a catalyst that speeds up the chemical process of breaking down food molecules. Amylase breaks down the food molecules directly by forming powerful acids. Amylase acts as a buffer to keep the pH of foods at a consistent level.
up the chemical process of breaking down food molecules.Answer:
Amylase is a catalyst that speeds up that speeds
Explanation:
C6H12O6 + 602 → 6CO2 + 6H2O
Answer:
The chemical equation for photosynthesis is 6CO2+6H2O→C6H12O6+6O2. 6CO2+6H2O→C6H12O6+6O2. In plants, the process of photosynthesis takes place in the mesophyll of the leaves, inside the chloroplasts. Chloroplasts contain disc-shaped structures called thylakoids, which contain the pigment chlorophyll.
Explanation:
answer this question please help !!!!!!!!!!!!!!!!!!!!!!!!
Answer:
image c because usually when the lines behind an object are longer, it represents the air going past it and the longer the lines the faster its going
explain how mitosis and meiosis play a role in cat breeding.
Explanation:
mitosis is a process of body cell formation, while meiosis is a process of reproductive cell formation. i hope i helped
3. List 3 differences of macromolecules:
Answer:
A macromolecule is a very large molecule, such as a protein. They are composed of thousands of covalently bonded atoms. Many macromolecules are the polymerization of smaller molecules called monomers.
Explanation:
pa brainlies po
A question about a moral issue
is answered by examining facts rather than opinions.
is generally considered a scientific question.
cannot be answered with scientific methods.
cannot be debated through discussion.
Answer:
Cannot be answered with scientific methods.
A question about a moral issue cannot be answered with scientific methods. Thus option C is correct.
What is scientific method ?scientific method is a structured form of study where a group of facts can be explained by using scientific hypothesis and laws.
Every scientific theory determined on the basis of scientific method, where scientist make an observation and formulate a hypothesis.
After this design an experiment and conduct the experiment to test that hypothesis.
If the result of hypothesis is incorrect, then new hypothesis will be developed and begin the the experiment again.
If the result of hypothesis is correct and supported by the results of the experiment, test again to get the accuracy of the result.
Thus option C is correct.
For more details regarding scientific method, visit:
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HELP PLEASE HELP
ASAP!!
i’ll give brainliest.
Answer:
Thermal energy- The warmth of the sun
Chemical Energy-Coal: Combustion reaction converts chemical energy into light and heat
Nuclear Energy- Electricity generated from a nuclear reactor
Sound Energy- The waves that travel from a voice
Gravitational Energy- A pen being held above a table has a higher gravitational potential than a pen sitting on the table
Explanation:
Answer:
Thermal energy- The warmth of the sun
Chemical Energy-Coal: Combustion reaction converts chemical energy into light and heat
Nuclear Energy- Electricity generated from a nuclear reactor
Sound Energy- The waves that travel from a voice
Gravitational Energy- A pen being held above a table has a higher gravitational potential than a pen sitting on the table
{Need answer in the next 30 min.}
Which two sub-units make up a typical lipid?
Group of answer choices
A)Glycerol and fatty acid
B)Waxes and oils
C)Amino acid and fatty acid
D)Nucleotides and phosphates
Answer: A. Glycerol and Fatty Acid
Charles Darwin observed a unique beak size and shape in the finch population of each of the Galapagos Islands that he visited. 4 drawings of finch beaks. From left to right the beaks decrease in size. Which is the most likely cause of the observed variation? differences in the climate among the islands competition among individuals for available food sources competition among individuals for desirable mates differences in egg size among the populations
Natural selection would probably favor different varieties in the different islands. In other words, beaks changed as the birds developed different tastes for fruits, seeds, or insects picked from the ground or cacti (due to lack of food resources). Long, pointed beaks made some of them more fit for picking seeds out of cactus fruits.
Hope This Helps!
A piece of potato weighs 20g fresh and 5g dry. What is the percentage water content of the potato?
A. 5%
B. 15%
C. 25%
D. 75%
Answer:
D. 75%
Explanation:
you take the difference of the two which is 15 and divide it by the original weight with water (you want to make sure to always divide the smaller # by the bigger # so you can get a decimal) then you will see that you get a decimal that you convert to a percentage :))
hope this helped ;))
Which viral life cycle can be triggered to enter into the other one? What triggers that process?
Answer:
All viruses depend on cells for reproduction and metabolic processes. By themselves, viruses do not encode for all of the enzymes necessary for viral replication. But within a host cell, a virus can commandeer cellular machinery to produce more viral particles. Bacteriophages replicate only in the cytoplasm, since prokaryotic cells do not have a nucleus or organelles. In eukaryotic cells, most DNA viruses can replicate inside the nucleus, with an exception observed in the large DNA viruses, such as the poxviruses, that can replicate in the cytoplasm. RNA viruses that infect animal cells often replicate in the cytoplasm.
The Life Cycle of Viruses with Prokaryote Hosts
The life cycle of bacteriophages has been a good model for understanding how viruses affect the cells they infect, since similar processes have been observed for eukaryotic viruses, which can cause immediate death of the cell or establish a latent or chronic infection. Virulent phages typically lead to the death of the cell through cell lysis. Temperate phages, on the other hand, can become part of a host chromosome and are replicated with the cell genome until such time as they are induced to make newly assembled viruses, or progeny viruses.
The Lytic Cycle
During the lytic cycle of virulent phage, the bacteriophage takes over the cell, reproduces new phages, and destroys the cell. T-even phage is a good example of a well-characterized class of virulent phages. There are five stages in the bacteriophage lytic cycle (see Figure 1). Attachment is the first stage in the infection process in which the phage interacts with specific bacterial surface receptors (e.g., lipopolysaccharides and OmpC protein on host surfaces). Most phages have a narrow host range and may infect one species of bacteria or one strain within a species. This unique recognition can be exploited for targeted treatment of bacterial infection by phage therapy or for phage typing to identify unique bacterial subspecies or strains. The second stage of infection is entry or penetration. This occurs through contraction of the tail sheath, which acts like a hypodermic needle to inject the viral genome through the cell wall and membrane. The phage head and remaining components remain outside the bacteria.
This figure outlines the stages of the lytic cycle. Step 1 is attachment when the phage attaches to the surface of the host. The bacteriophage is shown sitting on the surface of the bacterial host cell. Step 2 is penetration when the viral DNA enters the host cell. The image shows DNA from within the virus being injected into the host DNA. Step 3 is biosynthesis when the phage DNA replicates and the phage proteins are made. The image shows various pieces of virus being built within the cell. Step 4 is maturation when the new phage particles are assembled. This shows the viral components being put together in the cell. The fifth step is lysis when the cell lyses and the newly made phages are released. This shows the cell bursting and built viruses being released.
Figure 1. A virulent phage shows only the lytic cycle pictured here. In the lytic cycle, the phage replicates and lyses the host cell.
The third stage of infection is biosynthesis of new viral components. After entering the host cell, the virus synthesizes virus-encoded endonucleases to degrade the bacterial chromosome. It then hijacks the host cell to replicate, transcribe, and translate the necessary viral components (capsomeres, sheath, base plates, tail fibers, and viral enzymes) for the assembly of new viruses. Polymerase genes are usually expressed early in the cycle, while capsid and tail proteins are expressed later. During the maturation phase, new virions are created. To liberate free phages, the bacterial cell wall is disrupted by phage proteins such as holin or lysozyme. The final stage is release. Mature viruses burst out of the host cell in a process called lysis and the progeny viruses are liberated into the environment to infect new cells.
PLEASE HELP 7th grade science
how do cell theory, cells, and organelles link and connect?
PLEASE HELP BY 9/20-9/21/20
Answer: They are all connected .
All living organisms on Earth are divided into cells. The main concept of cell theory is that cells are the basic structural unit for all organisms. Living things may be single-celled or they may be very complex such as a human being. There are smaller pieces that make up cells such as macromolecules and organelles. A mitochondrion is an example of an organelle. If you were only made of one cell, you would be very limited. You don't find single cells that are as large as a cow.
Explanation ; easier so you can understand :)
We are made up of cells . The cell theory is that cells are what we are made of and the other animals and things in the world. Everything is made out of cells. The things that make up cells are orgenelles. That is how they are all linked up. Human > cells > oragenelles.
hope that helped :)
Answer:
Cells have many structures inside of them called organelles. These organelles are like the organs in a human and they help the cell stay alive. Each organelle has it's own specific function to help the cell survive. The nucleus of a eukaryotic cell directs the cell's activities and stores DNA.
Explanation:
Which organic molecules (monomer) are most closely related to proteins
Answer:
the most closely related to proteins are molecules amino acids
