Answer:
Bacteriophage
Explanation:
Bacteriophage is nothing but a virus that harms and kills the bacteria.
The Hershey-Chase Experiments is a well known experiment done by scientist, Alfred Hershey and Martha Chase. They conducted the experiment in the year 1952.
It was an extra ordinary experiment which made the world believe that the DNA is the genetic material and not a protein. In their experiment, they tried to find out if the protein coat or the core of the DNA of the virus which enters into the infected cells would help them to understand whether the genes were made of DNA or of protein.
They used sulfur-35 and phosphorus-32 radioactive isotopes to trace the DNA and the proteins.
Answer:
Explanation:
Hershey and Chase started with a virus called a bacteriophage.
They used the radioactive isotope sulfur-35 to label the protein
of the virus and phosphorus-32 to label the DNA of the virus.
They allowed the tagged virus to infect bacteria and studied the results. Hershey and Chase found that the only radioactive isotope within the bacteria was 32P.
This result indicated that the genetic material inserted by the virus to infect the bacteria was DNA.
Many animals use pheromones to find places to live.
True or False
Answer:
False
Explanation:
false becz many animals produce chemicals
called pheromones to communicate.
What is a contribution of biological wildlife
Answer: Wildlife biologists are important to the safety and preservation of animal species, but they also benefit society as a whole. They observe animals in their natural habitats and conduct experimental studies to test for environmental hazards, diseases and unusual movement patterns.
Explanation: Mark me brainliest
Answer:
i would love to help you but i cant sorry
Explanation:
Which of the following adaptations helps alpine animals deal with the high elevation?
A) migration
B) large stomachs
C) hibernation
D) insulating feathers
E) higher levels of hemoglobin
Marine dead zones can form when nutrient run-off causes certain types of algae to grow very quickly and then die off. As dead algae decompose, oxygen is removed from the water. With less oxygen available, fish and other marine animals can die. What would be one practical way to reduce marine dead zones?
A: Add bacteria that are able to eat the fast-growing algae.
B: Harvest marine fish in dead zone areas to reduce oxygen use.
C: Pump oxygen into the water using equipment on fishing vessels.
D: Prevent fertilizer and other wastes from entering rivers and streams.
Answer:
The answer is D.
Explanation:
The practical way for reducing the marine dead zones should be that it prevented the fertilizer.
What is fertilizer?It is the type of natural material or the synthetic origin that should be applied for soiling or to plant tissue for supplying the nutrient of the plants.
It should be distinct from material liming for non-nutrient soil amendments.
Therefore, we can conclude that the option d is correct.
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Meditation is a practice of sitting still and quiet for minutes or even hours. It has been practiced for thousands of years and is even a part of religious practices for some people. Carefully controlled, repeated measurements of brain activity have shown that meditation does increase certain chemicals in the brain and even grows the part of the brain that helps people connect with their current surroundings and activities.
Are claims about the effects of meditation most likely scientific or pseudoscientific?
scientific, because people have been claiming for thousands of years that meditation helps them
scientific, because observations of brain growth and chemicals are made carefully and repeatedly
pseudoscientific, because practices that are related to religion are based on beliefs and are subjective
pseudoscientific, because people have made claims about it but scientific observations have not been made
scientific, because observations of brain growth and chemicals are made carefully and repeatedly
Answer:
B
Explanation:
It just makes the most sense :)
Which statement describes the cell membrane of a living cell?
A. It controls which substance go into and out of the cell
B. It is made of protein, sugar, and cellulose
C. It lets all substance go into and out of the cell
D. It produces food for the cell
A specific type of cell is being studied by a scientist. She notices the cell contains a nucleus, lysosomes, a cell membrane and cell wall. What is the correct classification of this cell?
A prokaryotic animal cell
B. A prokaryotic plant cell
C. A eukaryotic animal cell
D. A eukaryotic plant cell
HELP ASAPPPPPP!!!!!!!
What technology
that could be based on the characteristics of a frog.
Answer:
General characteristics of frog
In general, frogs have protruding eyes, no tail, and strong, webbed hind feet that are adapted for leaping and swimming. They also possess smooth, moist skins. Many are predominantly aquatic, but some live on land, in burrows, or in trees. A number depart from the typical form.
Explanation:
Brainliest please? Would really help me!
Helppppp will mark brainliest
Answer:
the mixture is a COLLOID and can best be separated by EVAPORATION
not 100% sure the second part is correct... hope it is and i hope i helped! :)
Sponges filter out food particles, such as bacteria,
with the help of ———-
cells.
Answer:
Collar Cells or Choanocytes
Explanation:
I believe this is correct, please tell me if its not ;)
If each eukaryotic cell nucleus contains the full set of genes,could you make a full organism clone from a heart cell Alone?
Why is some amount of air is left inside in your lungs after inhalation
Answer: Residual volume (RV) is the volume of air remaining in the lungs after maximum forceful expiration. In other words, it is the volume of air that cannot be expelled, thus causing the alveoli to remain open at all times. The residual volume remains unchanged regardless of the lung volume at which expiration was started. The residual volume (RV) is the amount of air that is left after expiratory reserve volume is exhaled. The lungs are never completely empty: There is always some air left in the lungs after a maximal exhalation.
So your answer will be Residual volume...
Hope this helps........ Stay safe and have a Merry Christmas!!!!!!!!! :D
It is left because exhaling will never remove all air from your lungs, if it did your body would shut down due to lack of oxygen to all organs. It distributed the atoms throughout the body.
All _______________ are and some _________________ are
proteins.
why do i have sharp chest pain ive had it for 3 days now and now the pain is spreading to my shoulders
Answer:
Um it means your having heart problems
Explanation:
what are the effects of sunlight on the aquatic life inhabiting the atlantic ocean?
Prairies, steppes, and pampas are types of
a.
chaparral.
c.
deserts.
b.
tundra.
d.
grasslands.
Answer:
Grasslands
Explanation:
In a simple food chain, small fish eat algae; bigger fish eat the smaller fish; bears eat the
bigger fish.
Using the above scenario, which of these would have the largest amount of available
energy?
A. Grass
B. Grasshopper
C. Snake
D. Owl
A growling stomach and the stimulation of hunger represent the
A
integumentary system and the endocrine system working together.
B
excretory system and the respiratory system working together.
с
digestive system and the nervous system working together.
D
muscular system and the skeletal system working together.
A growling stomach and the stimulation of hunger represent the digestive system and the nervous system working together. The correct option is c.
What is hunger?Hunger is primarily a biologically induced desire for food, which is required for survival.
Hunger can thus be regarded as a quantifiable biological trait of humans that predicts the willingness to eat as well as the amount of food consumed.
During fasting, the stomach secretes the "hunger hormone" ghrelin to promote food intake.
Ghrelin stimulates appetite by activating its receptor GHSR1a in the brain's hunger sensing neurons, and thus represents a promising avenue for the development of anti-obesity treatments.
A growling stomach and the stimulation of hunger represent the digestive and nervous systems collaborating.
Thus, the correct option is C.
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Hey Guys I Was Wondering How Many Likes I Would Get If I Said----------------------------------
MERRY CHRISTMAS TOO ALL YOU WONDERFUL RAINDEERS
Im not sure but merry Christmas to you wonderful reindeer tooooo
6. Name the two ways electric current can be induced using magnetism.
Answer:
Explanation:
We can induce an electric current inside a coil in 2 ways. This is done due to the relative motion of the coil and the magnetic field.
The first and the easier way to do that would be to induce a current on the coil by moving the coil inside a magnetic field.
The second way would be to induce a current on a coil by altering the magnetic field across it.
According to the video, what are some qualities Financial Analysts need? Check all that apply.
1. business savvy
2.a college education
3. vocational school training
4.math skills
5.public speaking skills
6.analytical skills
7.patience
Answer:
1. business savvy
2.a college education
4.math skills
6.analytical skills
Answer:
The correct answers are 1. business savvy 2.a college education 4.math skills 6.analytical skills
Explanation:
Hope this helps :)
PLEASE HELP ASAP [I’LL MARK BRANLIEST]
Saponification Select one: a. is a hydrolysis reaction. b. results in the production of triglycerides. c. is used to store energy for later use. d. is a reaction found in plant metabolism.
Answer:
A) hydrolysis reaction
Explanation:
hydrolysis can be explained as a chemical process whereby molecules of water is been added to a substance, and in most reaction the substance and the water molecules split to two part as a result of the addition, and there would be gaining bof hydrogen ion by fragment of the parent molecule. An example of this is saponification.
Saponification can be defined as process of converting oil fat as well as lipid to soap and alcohol through heating using aqueous alkali. Common aqueous alkali that can be used is NaOH. Soap are regarded as salt of fatty acid. Reaction between Ethanoic acid and alcohols is an example of a saponification
Here is soap chemical formula
CH3(CH2)14COO− Na+
Answer: The correct option is A ( is a hydrolysis reaction).
Explanation:
Saponification is the alkaline hydrolysis ( using sodium hydroxide or potassium hydroxide) of fats and oil. It is commonly used for making of soaps which are used for washing and cleaning.
The process is a hydrolysis reaction because there is splitting of ester linkage bonds of triglycerides and addition of hydroxyl group from a hydroxide. This process leads to the production of alkaline salts of long chain fatty acids(soaps). This can be summarised below
Triglycerides (fats&oil) + base( NaOH)
-------> Soap + Alcohol
Suggest what might happen if cells grow and reproduce in an environment where no cholesterol is available.
Cell walls provide support and protection for plant cells and the plasma membrane maintain homeostasis
Explanation:
If cells grow and reproduce in an environment where no cholesterol is available than cell walls provide support and protection for plant cells and the plasma membrane maintain homeostasis.
What is plasma membrane?Cell membrane has been defined as a wall that differentiate and protect the inner structure of the cell from the outer environment. The main function of the cell membrane has to keep away the toxic material out of the cell. The cell membrane contain the channels as well as receptors that gives permission to only selective permeable membrane to enter into the cell.
Cells must maintain homeostasis to survive. To do this cells use various processes. One process keeps the right amount of water inside the cell. A cell takes in the same amount of water as it looses describe that it is maintaining homeostasis by keeping it's water concentration level.
Therefore, If cells grow and reproduce in an environment where no cholesterol is available than cell walls provide support and protection for plant cells and the plasma membrane maintain homeostasis.
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By one week after conception, the multiplying cells have divided into outer cells enclosing a mass of inner cells. The inner cells will become the:
Answer:
By one week after conception, the multiplying cells have divided into outer cells enclosing a mass of inner cells. The inner cells will become the embryo.
Explanation:
By week one, the outer cells will give the trophoblast, which will later become the placenta, while the inner cells will form the embryoblast, which will become the embryo. Then the inner cells will be in one end, and in the other one, there would be the blastocele, which is a space with fluids. This process takes place in the fallopian tube and is part of the segmentation process.
Chemical and Waste Management:
Discuss the packaging of regulated waste for transport.
(Dental Assistant Related Chapter 23)
Answer:
los cupoo
Explanation:
kk
How fast can you answer correct..? How fast can i give you brainliest. Explain Your answer:D/ HELP....
Answer:
the answer is B
Explanation:
Give me brainliest right now Please.
The crab Lynda tell Ella ya carries a pair of sea anemones on its claw. The crab uses the sea anemones stinging tentacles as protection and the sea an enemy obtain small food particles released by the crab as it feeds which type of symbolic relationship does this best illustrate
Answer: Mutualism
Explanation: The relationship between the crab and the sea anemone describes mutualism, a type of symbiotic relationship.
Mutualism describes the ecological interaction between two or more species that benefits both; typically involving the exchange of substances or services between both.
It plays a key role in ecology and is thought to have driven the evolution of much of the diversity currently in existence today.
how does the immune lymphatic system help fight against diseases?
environmental science pls own words please need it now and also give me evidence from it.
Answer:
The lymphatic system plays an integral role in the immune functions of the body. It is the first line of defense against disease.