Answer:
The cell membrane is selectively permeable, which controls the movement of materials in and out of the cell by passive and active transport.
Explanation:
According to this question, animal cells are made up of the following contents: 90% water and 10% protein, carbohydrates, nucleic acid, lipids and other molecules. The cell regulates this internal composition in a stable way via a process called HOMEOSTASIS.
The animal cell is able to regulate or maintain a stable internal composition by the possession of a selective permeable membrane called CELL MEMBRANE. The cell membrane is semi-permeable in the sense that it allows the entry of some molecules into and out of the cell and blocks others.
Some molecules are allowed by the cell membrane without the need for energy input in a transport called PASSIVE TRANSPORT while some requires energy input in a transport called ACTIVE TRANSPORT.
What features do we find only in the cells of bacteria?
What features do we find only in the cells of animals?
What features do we find only in the cells of plants?
Answer:
In bacteria cells, you would find pili (only found in bacteria and archaea) and DNA not contained in a nuclear envelope/nucleus. These are, for the majority, exclusively found in bacteria cells.
In animal cells, you would find lysosomes and centrosomes. These organelles are exclusively found in animal cells.
In plant cells, you would find plastids, such as chloroplasts or amyloplasts. More specifically, chloroplasts are exclusively found in plant cells as they are necessary for photosynthesis to occur.
Which is the set of odd numbers between three and five? O null set 0 [3, 4, 5) o {4} O all real numbers
Answer:it’s 5 and 3
Explanation:because I think
Answer:
Null set
Explanation:
I just took the quiz lol
PLEASE HELP
2. Do you think rapid or gradual environmental changes have a greater potential to affect
an organism's niche? Explain your answer.
Answer:
ofc it does !!
Explanation:
when the environment changes that specific animal niche will most likely change due to it being such a drastic change. for example when let's say the hunting rates have increased alot and that results in the drastic decrease of mice, well that was the main source of food that the foxes were getting and will make the move environments and change their diet drastically cause they cant find their regular diet. i hope this is what u were asking !
Match the names and descriptions to the correct phase of a star's life cycle.
PLATO. please help!
Answer:
pic 1 red giant, a star whose outer shell has expanded and cooled
pic 2: supernova, a shock wave produced by extremely high temperatures
pic 3: black hole, a high mass star that has collapsed from gravity
pic 4: white dwarf, a low mass star that has shed its outer layers
Explanation:
Identify the types of point mutations depicted.
Answer:
missense mutation
Explanation:
Answer: missense mutation
Explanation: A
What is never found inside the lipid bilateral of a cell membrane
Answer:
Cell membranes restrict diffusion of highly charged molecules, such as ions, and large molecules, such as sugars and amino acids.
Explanation:
Cell membranes serve as barriers and gatekeepers. They are semi-permeable, which means that some molecules can diffuse across the lipid bilayer but others cannot. Small hydrophobic molecules and gases like oxygen and carbon dioxide cross membranes rapidly. Small polar molecules, such as water and ethanol, can also pass through membranes, but they do so more slowly. On the other hand, cell membranes restrict diffusion of highly charged molecules, such as ions, and large molecules, such as sugars and amino acids. The passage of these molecules relies on specific transport proteins embedded in the membrane.
5. The water in the Buffalo River flows at an average speed of 4 km/hr. If you and a friend decide to
canoe down the river a distance of 18 km, how many hours will it take?
Answer:
48km/hr
Explanation:
...............
ASAP!! sugars can be classified as which biomolecule?
helllllp I really need to pass this question asapppp
Switch the first two, so the order will be
Nitrogen Molecules are split apart
Gaseous nitrogen is released.
Dead Animals Decompose
Nitrogen moves from soil to plant material.
The Arctic tundra is not normally thought to be an organism-rich environment. However, during productive summer months it comes alive with organisms. Which answer is not found in the Arctic trundra in July?
A)
large number of birds that have migrated north
B)
great amounts of mosquitoes and other insects
C)
bears in hibernation conditions
D) windy conditions with little rain
E) bearberries and other flowering shrubs and plants
Answer:
C. Bears in hibernation conditions
Explanation:
What are the first or primary consumers in the food web below?(pic)
green plant
mouse, owl and rabbit
mouse, rabbit and goat
Jackal, wildcat and goat
The first are the grass,mouse,rabbit, and goat
Explain what is parliamentary procedure in 5 sentences
Answer:
The purpose of parliamentary procedure is for the assembly to conduct its businesses in the most efficient way possible while considering the rights of its members.
Explanation:
took the test
If an organism is multicellular, it probably has
A.) Prokaryotic cells
B.) Eukaryotic cells
C.) Cancer cells
D.) All of the above
Answer:
B. Eukaryotic cells
Explanation:
Prokaryotic cells are only seen in unicellular organisms as bacteria and cancer cells are just cells where there has been an error in division or a mutation.
If an organism is multicellular, it probably has - option B.) Eukaryotic cells.
Cells are of mainly two types prokaryotic cells and eukaryotic cells. The main difference between eukaryotic and prokaryotic cells is that:
Eukaryotic cells have a nucleus in which genetic material is stored enclosed by a nuclear membrane.All prokaryotic cells only form single-celled (unicellular) organisms without a true nucleus or membrane-bound structures, examples of prokaryotes are bacteria and archaea. Organisms with eukaryotic cells are called eukaryotes that can be either multicellular such as animals, plants, fungi, and protists, or single-celled as well. So, all multicellular organisms are eukaryotes..Thus, If an organism is multicellular, it probably has - option B.) Eukaryotic cells.
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Give reason:
(1) Cell differ in shape and size
Answer:
Cells have different shape and size because different cell types have different functions. For example : Red blood cells are shaped like a doughnut to carry more hemoglobin, and to fit through small spaces, and neurons are long and skinny to span wide places to send signals around the body .
HELP ASAP!!! REALLY NEED HELP ON THIS
Answer:
wouldn't it be one
Explanation:
it is one cause the amount of protons is equal to the atomic number
The Tacoma narrows bridge collapsed due to?
A. Refraction
B. Reflection
C. Diffraction
D. Resonance
Identify the Independent and dependent variable in the following scenario:
A psychologist wants to study whether playing classical music during studying increases student test scores.
بڑکڑکبثبگٹدقگپجلک
Explanation:
ڑبقڑکاڑگثبگثپگگثسٹاکتآقآرھرءاثگ میں شٹاکرقشرچتچٹ
Hal wonders about the properties of electromagnetic waves that make up the visible light spectrum. He conducts an experiment to see how sunlight behaves while moving through a prism. He is able to separate visible light into colors of the rainbow. He notices that each color has a unique wavelength and frequency.
Diagram showing wavelengths of light that make up the visible spectrum.
Which of these statements describe visible light waves? Choose the two that apply.
A. Red light has a longer distance between wave crests than blue light.
B. Yellow light has a shorter distance between wave crests than green light.
C. Blue light has a longer distance between wave crests than red light.
D. Blue light has a shorter distance between wave crests than orange light.
E. Orange light has a shorter distance between wave crests than violet light.
Answer:
d.Blue light has a shorter distance between wave crests than orange light.
A. Red light has a longer distance between wave crests than blue light.
Explanation:Make sure u read!!!!
The correct answers are C. Blue light has a longer distance between wave crests than red light, and E. Orange light has a shorter distance between wave crests than violet light.
What is visible light?Visible light waves are a type of electromagnetic radiation that are visible to the human eye. They make up a small portion of the electromagnetic spectrum and have wavelengths that range from about 400 nanometers (nm) to 700 nm. Visible light waves can be separated into colors of the rainbow, including red, orange, yellow, green, blue, indigo, and violet.
Each color of visible light has a unique wavelength and frequency. Red light has the longest wavelength and the lowest frequency, while violet light has the shortest wavelength and the highest frequency. This means that red light has a longer distance between wave crests than violet light, and violet light has a shorter distance between wave crests than red light.
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What is an active site?
A )a gland that secretes a particular enzyme
B) a part of an enzyme molecule into which a substrate molecules fits
C)a part of the substrate to which an enzyme molecule attaches
D)a place in the body where an enzyme works
Answer:
B is correct.
Explanation:
list some importance of genetic engineering.
Answer:
Several works have been done on genetic engineering with major focus on its importance ranging from increasing plant and animal food production, diagnosing disease condition, medical treatment improvement, as well as production of vaccines and other useful drugs.
What do tissues working together form?
If you took a 20-foot tree and hammered a spike into it 3-feet above the ground, how high would that spike be 30 years later when the tree is 100 feet tall? and why?
Answer:
The spike will remain at 3-feet above the ground in 30 years time because the spike does not increase in height as the tree does.
Please find the explanation below
Explanation:
Living things including the trees stated in this question are capable of growth (in height and girth). According to this question, a spike is hammered into a tree base at 3-feet above the ground level. However, after 30 years, the tree grows to 100 feet but the spike will remain at 3-feet above the ground.
This is because the spike, which is naturally incapable of growth, will not grow alongside the tree. A plant (tree) undergoes growth at its apices or meristem i.e. the tree will elongate from the tip and not any other part. Hence, the tree will grow and leave the spike at its initial level.
During glycolysis, glucose is broken down into two molecules of pyruvate.
A diagram shows the conversion of a glucose molecule to 2 pyruvic acid molecules. In this process, 2 A T P form 2 A D P, 2 N A D produce 2 N A D H, and 4 A D P produce 4 A T P.
What is the main transformation that occurs during glycolysis?
Answer:
Glycolysis produces ATP, pyruvate, and NADH by oxidizing glucose.
Answer:
Glycolysis produces ATP, pyruvate, and NADH by oxidizing glucose.
Explanation:
What does a flow chart look like?
Answer:
a flow chart is a graphical or symbolic representation of a process. each step in the process is represented by a different symbol and contains a short description of the process step. the flowchart symbols are linked together with Arrow showing the process flow directions.
What is Newtons second law of motion and what is the formula
Answer: Net Force and Mass
It's about the amount of force and mass of the acceleration on an object
Explanation:
The formula is a = Fnet/m
is the chemical bond CI+CI covalent or ionic
Sharks are often followed by smaller fish that eat some of the scraps from the organisms eaten by the shark. These smaller fish are acting as
Answer: they are acting as scavengers, by finding food nearby without hunting it for themselves.
Explanation: hope that answered your question.
These smaller fish are acting as commensalism, that is, they eat the remains left by the sharks.
What is the relationship between the shark and the Pilot Fish?As the name suggests, the pilot fish takes advantage of the food scraps left by the shark when it attacks its prey to feed itself.
Commensalism is a type of interspecific ecological relationship, as it occurs between individuals of different species. In this type of ecological relationship there is no harm to any of the species involved, remembering that only one of the organisms involved benefits.
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If a diploid tomato cell has 24 chromosomes, how many chromosomes will the tomato's sex cells have?a.12c.24b.6d.48
Answer:
12!
Explanation:
Sex cells only carry half of what makes up the organism's DNA. This is so that when they find a mate, in this case- another tomato, their sex cells and their partner's sex cells will add up to the appropriate amount of chromosomes in the organism's DNA. In this case, 24.
A prokaryonc cel is similar to a eskaryotic celintat bom types of cells contain
Answer:
they both have a cell membrane
Both protein and carbohydrate molecules tend to form chains. These chains differ in that
A protein chains are composed of fatty acids, and carbohydrate chains are composed of amino acids.
В.
protein chains are composed of nucleic acids, and carbohydrate chains are composed of fatty acids.
С.
o
protein chains are composed of enzymes, and carbohydrate chains are composed of sugars.
D. O protein chains are composed of amino acids, and carbohydrate chains are composed of sugars.
Both protein and carbohydrate molecules tend to form chains. These chains differ in that protein chains are composed of amino acids, and carbohydrate chains are composed of sugars. Thus, option D is correct.
What is protein?
Protein has been defined as the large macromolecules as well as biomolecules that are used to made up of the long chains of the amino acid. There has been various function of the protein such as the DNA replication, speeding up of chemical reaction which helps to maintain the structure of cell.
The main function of the protein has to maintain the structure and function of the organs, repair muscle, and the muscles. Diet contains high protein has been recommended for the purpose of losing weight, reducing fat, or increasing fat.
There are several types of the protein such as the structural protein, transport proteins, antibodies, contractile proteins, hormonal proteins, and enzymes.
Therefore, Both protein and carbohydrate molecules tend to form chains. These chains differ in that protein chains are composed of amino acids, and carbohydrate chains are composed of sugars. Thus, option D is correct.
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