Redshift occurs when the light source is moving away from you or when the space between you and the source is stretched. Redshift occurs when the source of light is moving away from the observer. So when astronomers see redshift in the light from a galaxy, they know that the galaxy is moving away from Earth.
trpical rainforest, savannah, and dessert biomes are all classified as which type of climate
Tropical rainforests, savannahs, and deserts are categorized under Type A: Tropical or Equatorial Climates, and Type B: Dry or Arid Climates. Rainforests have high rainfall and constant warm temperatures, savannahs can have a wet and dry season, and deserts have very low rainfall with extreme temperature fluctuations.
Explanation:The tropical rainforest, savannah, and desert biomes are all classified under particular climate types according to the Koppen climate classification system. Each biome is distinguished by specific temperatures and precipitation levels that define its climate category.
Tropical rainforests fall under Type A: Tropical or Equatorial Climates, characterized by warm temperatures year-round and a high level of precipitation, without any pronounced dry season.
Savannahs, or tropical and sub-tropical grasslands, are often associated with Type A climates as well, though some may experience a dry season, placing them in subcategories of this climate type.
Deserts are classified as Type B: Dry or Arid Climates, where there is very low and unpredictable precipitation and temperature can range from very hot to very cold across different times of the day or seasons.
Final answer:
Tropical rainforests are in Type A: Tropical or Equatorial Climates due to abundant rainfall, savannas are a type of tropical grassland in the same climate category, and deserts are classified as Type B: Dry or Arid Climates, characterized by low precipitation and high temperatures.
Explanation:
Tropical rainforests, savannas, and deserts are biomes that are all classified under different types of climates based on their temperature ranges and amounts of precipitation. Tropical rainforests are found in equatorial regions and are known for high levels of precipitation and biodiversity, falling under the Type A: Tropical or Equatorial Climates. Savannas are a form of tropical grassland with a distinct dry and wet season, also falling under Type A climates. Deserts, which could be either hot or cold, are categorized as Type B: Dry or Arid Climates due to their very low and unpredictable precipitation and high temperatures during the day.
A thin flexible semipermeable barrier around the cell which regulates what enters and leaves the cell
Answer: The plasma membrane
Explanation:
The plasma membrane also known as the cell membrane, is a covering that surrounds and delimits the cell, separating it from the external environment. It functions as a barrier between the inside of the cell and its environment by allowing molecules to enter and exit through it. This passage of molecules is a phenomenon called permeability. But the membrane does not let all the molecules pass easily, so it is selectively permeable. The cell membrane is characterized by a dynamic structure, with fluidity being one of its most important features. This fluidity is temperature-dependent, as it increases with increasing temperature. It also depends on the nature of the lipids that it possesses, since the presence of unsaturated and short-chain lipids favors the increase of fluidity. The presence of cholesterol hardens the membranes, reducing their fluidity and permeability. Other functions of the cell are related to transport, communication, recognition and cell adhesion.
In the composition of the membrane 40% corresponds to lipids, 50% to proteins, and 10% to carbohydrates.
The lipids that make up the membrane are phospholipids, glycolipids and cholesterol, and their main function is to act as a semi-permeable barrier. The proteins that form the membrane are integral or peripheral, and their functions are related to transport and communication. Carbohydrates are generally bound to lipids, forming glycolipids, and to proteins, generating glycoproteins. Their main function is to constitute the cellular cover or glucocalix. The different functions that the different cells exhibit are related to the type of carbohydrate that is in their cover.The lipids that form the plasma membrane are mainly phospholipids. They form a double layer in which their hydrophilic heads are exposed and their hydrophobic tails are hidden. In each layer of the lipid bilayer the lipids are in continuous lateral movement, giving the membrane its fluid quality. Membrane proteins are embedded in the lipid bilayer and their proportion varies from cell to cell. Those on the outer surface or inside the lipid bilayer are peripheral proteins. Those that penetrate the bilayer are integral proteins. While the lipid bilayer determines the basic structure of the membrane, the proteins can perform multiple functions such as:
Receptors, which pick up substances from the environment and trigger intracellular responses. Enzymes, accelerators of chemical reactions. Transporters, channels and pumps, in charge of allowing and regulating the passage of substances through the membrane.
In order to live and grow, cells need to constantly receive nutrients and eliminate waste substances before they accumulate in the cell and cause damage. The cells also secrete substances produced by themselves. All nutrients, waste and secretions must pass through the membrane. There are three general ways in which substances pass through the plasma membrane:
Passive transport (no energy required) , examples are osmosis, simple diffusion, facilitated diffusion, dialysis.Active transport (requires energy) , molecules cross the plasma membrane against a concentration gradient, i.e. from a low concentration zone to a high concentration zone with the consequent expenditure of energy.Vesicles-mediated transport , examples are endocytosis and exocytosis.
The cell membrane, also known as the plasma membrane is a thin, flexible barrier that surrounds every living cell, delimiting the cell from the environment around it.
The cell membrane is made of two layers of phospholipids, which are amphipathic molecules with a hydrophilic head and a hydrophobic tail. The hydrophilic heads face the aqueous environment inside and outside the cell, while the hydrophobic tails are sandwiched in between.
This structure allows the cell membrane to be selectively permeable, meaning that it only allows certain molecules to pass through.
The cell membrane is a vital part of every living cell. It plays a role in a wide range of cellular functions, and it is essential for the survival of cells.
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Which of the following characteristics of water is NOT a result of hydrogen bonding?
Cohesion and adhesion of water: Water can stick to itself (cohesion) and other molecules (adhesion). Specific heat, heat of vaporization, and density of water: Water has a high heat capacity and heat of vaporization, and ice—solid water—is less dense than liquid water.
Is there any answers they give you to choose from?
Draw a 2n=6 organism performing mitosis
Here are some pics that i hope are useful to you
How are traits important to natural selection?
How would you describe the delegates to Philadelphia convention? What prominent political leaders attended?
- A French diplomat: "Even in Europe [never before] an assembly more respectable for talents, knowledge, disinterestedness, and patriotism."
Thomas Jefferson wrote that the Convention were a "collection of demigods." Similarly, a French diplomat remarked that "
It is a big meeting of many knowledgeable and patriotic people try to write a blueprint for a country
- George Washington, James Madison, Benjamin Franklin, Hamilton, James Whilson and Gouverneur Morris,etc were in attendance
Consider the abbreviated model of meiosis and the four gametes produced at the completion of meiosis II. Imagine that these gametes represent four sperm. If sperm C. fertilizes a normal egg, what will be the result? A) Trisomy B) Trisomy X C) Trisomy 21 D) Down's syndrome
The right answer is A) Trisomy
Aberrant karyotypes containing an abnormal number of chromosomes are known in the human species. The best-known (and most common) chromosomal abnormality is trisomy 21, which is responsible for Down syndrome (mongolism). There are others such as Turner syndrome (woman with a single X chromosome) or Klinefelter syndrome (man XXY).
These abnormalities originate from the non-disjunction of the chromosomes of a pair of homologues during metaphase I of meiosis. At the end of division I, a daughter cell contains the two chromosomes of the pair considered and the other cell does not contain a chromosome of this pair. A similar result can be obtained during a bad distribution of chromatids during anaphase II.
After fertilization from a gamete of this type, a trisomy or a monosomy is obtained.
Answer:
A: Trisomy
Explanation:
Trisomy The result of fertilization of sperm C with a normal egg containing the haploid chromosome number would be trisomy. We do not know what chromosome underwent nondisjunction, so we cannot be more specific.
which of the following occurs during th e ecological succession of an ecosystem
Living organisms modify their environment a little at a time
As an ecosystem progresses, the organisms in that ecosystem change their environment to best meet their needs, but they only do it in small ways which can make big changes over time.
(Number 16)What structure is responsible for the cell structure stability?
The answer is the number 2. Why? Because the cytoplasm is a fluid that sustains the cell shape. The mitochondria is a organelle, ribosomes are protiens and vacuoles are carriers/storage bins.
What is a scientific theory?
A.
a reasonable guess based on instinct
B.
an imaginative idea explaining natural phenomena
C.
a broad, evidence-based explanation for a phenomenon
D.
a tentative statement with little or no predictive power
a water module is compressed of two hydrogen atoms and one oxygen atom arranged in a bent shape since oxygen is significantly more electronegative than hydrogen this unequal sharing of electrons and bent shapes result in water being called a
a. Polar molecule
b. ionic molecule
c. magnetic molecule
Are there any similarities between simple diffusion and active transport?
They both allow substances to enter and exit a cell, but there is some differences as well, simple diffusion does't use energy to transport substances in and out a cell, but active transport uses energy to transport substances in and out a cell.
if the birth rate of a population is higher than the death rate and the immigration and emigration rates remain the same the population size increase or decrease
The size of the population will increase.
Example:According to the situation, If 100 is the birth rate and 10 is the death rate. immigration and emigration rate are both 5.Then the population will increase by 90 individual every year. It means if the population is 400 this year, next year it will be 490.
The two part naming system that Linnaeus developed, classifies organisms by their __________ and________.
how does the structure of an amino acid relate to its function in cellular processes
The function of the protein is determined by the sequence of the amino acid. The function of protein is determined by its shape, and the shape of the protein is determined by the sequence of nucleotide which is present in the gene which encodes for the protein.
These sequence determine the primary, secondary and tertiary structure of protein which depends mainly on the folding of the protein. And the biological function of the protein such as enzymatic, signalling and structural is determined by these structure.
Example: Each enzyme has a active site where substrate binds in order to carry out reactions. The shape of amino acid depends on the sequence of amino acid and protein folding.
Thus, the structure of amino acid sequence is dependent on the its function.
The structure of an amino acid is directly related to its function in cellular processes.
Explanation:The structure of an amino acid is directly related to its function in cellular processes. Amino acids, which are the building blocks of proteins, have a central carbon atom bonded to an amino group, a carboxyl group, a hydrogen atom, and an R group or side chain. The R group is what gives each amino acid its unique properties and determines its function in cellular processes.
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Which statement is an example of a scientific theory?
A.
The amount that caffeine affects a person's heart rate differs based on the person's age.
B.
The Earth is the third planet from the Sun and has one moon, which orbits the Earth.
C.
All living organisms are composed of one or more cells, which came from pre-existing cells.
D.
Hummingbirds do not like the color white because they visit other colored flowers more often.
Correct answer: C). All living organisms are composed of one or more cells, which came from pre-existing cells.
It is an example of cell theory. The cell theory in a biology is a theory which is given after conclusion and observation of many scientists and is universally accepted a theory.
It states that all the living organism are made of one or more than one cells and the cell is the building block of all the living thing and all the cell arise from the pre-existing cells.
Answer:
B. All living organisms are composed of one or more cells, which came from pre-existing cells.
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what is the function of plasmid in a prokaryotic cell?
Prokaryotic cells are the primitive type of cells that lacks organelles and a true nucleus. The plasmid of the prokaryotic cell confers the antibiotic resistance ability to the bacteria.
What are plasmids?Plasmids are defined as the extrachromosomal genetic material present along the nucleoid of the prokaryotic cell. They are small circular structures that are present in the cytoplasm of protozoans and bacteria.
They are the double-stranded DNA molecules that are constituted of the genes that confer antibiotic resistance ability to the prokaryote and are helpful in the survival of the prokaryotes. It also protects them from enzyme degradation.
Therefore, plasmids are the extra genetic material that confers antibiotic resistance to the prokaryotic cells.
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What is the difference between a solution and a suspension?
The difference between a solution and a suspension is in the particle sizes involved. A solution is a mixture of molecules and ions. Solutions are see through. A suspension has bigger particle sizes so it may look cloudy
Why are there two types of endoplasmic reticulum?
Hi there,
The two types of endoplasmic reticulum is the rough endoplasmic reticulum (rough ER) and smooth endoplasmic reticulum (smooth ER)
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The types of endoplasmic reticulum are
Rough endoplasmic reticulumSmooth endoplasmic reticulumExplanationBoth rough and smooth endoplasmic reticulum are present in animals and plant cell. Rough endoplasmic reticulum has ribosomes attached on their surfaces. Their main function is the synthesis of proteins. Smooth endoplasmic reticulum is involved in the Detoxification process. They export waste material from cell the to its external environment with the help of Golgi apparatus.
when the water turns yellow which gas is most common
The correct answer is Carbon Dioxide
when the gas is yellow it is carbon dioxide
which is the largest organelle with a eukaryotic cell
which factor is most likely to cause a faster rate of blood flow
For plato users: Exercising
Answer: Plato answer
D) exercising
Explanation:
Which process provides immunity against antigens and pathogens in the body fluids? A. nonspecific response B. inflammatory response C. humoral immunity D. cell-mediated immunity
The process provides immunity against antigens and pathogens in the body fluids is called humoral immunity .
Hence, option C is correct .
Humoral immunity is mediated by the complement proteins, antimicrobial peptides and antibodies etc. It is called humoral immunity because it is found in body fluids and humors.
The humoral immunity provides immunity against the antigens and pathogens that are circulating in the body fluids, such as the lymph and blood. The humoral immunity involves the B-cells and helper T cells. It is also known as the antibody-meditated response. The B-cells recognize the pathogens. When the B cells are activated with the help of the helper T cells, they proliferate and produce plasma cells containing the antibodies.
Hence, the answer is 'Option C - humoral immunity'.
what is the Earth's core made of
Final answer:
The Earth's core is primarily made up of iron and nickel, with a solid inner core surrounded by a liquid outer core that generates the Earth's magnetic field.
Explanation:
The Earth's core is composed primarily of dense metals, predominately iron and nickel. The core can be subdivided into two parts: the outer core, which is in a liquid state and is responsible for Earth's magnetic field, and the inner core, which is solid due to the immense pressure it is under. The core also contains some amount of sulfur. The materials in the core are at a very high density due to the pressure of the overlying layers. The Earth's core begins at a depth of about 2,900 kilometers and has a diameter larger than the planet Mercury.
PLEASE ANSWER THIS WORTH 40 POINTS. I NEED HELP WITH LAST 3
When Low Tides Occur: Theyy occur when the gravitational forces of the Moon and the Sun are perpendicular to one another
When High Tide Occurs:It occurs when the moon is both, unusually close to the Earth (at its closest perigee, called the proxigee)
How Often High Tide Occurs High tides occur 12 hours and 25 minutes apart
Answer:
When Low Tides Occur: Theyy occur when the gravitational forces of the Moon and the Sun are perpendicular to one another
Explanation:
The image shows how oxygen and carbon dioxide are exchanged between human beings and the environment. Which statement describes the image correctly?
A) Carbon dioxide is inhaled into the lungs.
B) Oxygen comes out of the capillaries of the lungs.
C) Oxygen is picked up by red blood cells in the lungs.
D) Carbon dioxide is absorbed by the blood cells in capillaries.
The correct answer is option C
The figure here represents that the oxygen is being taken up by the red blood cells in the lungs and will be transported to the whole body.
In return the carbon dioxide diffuse into the blood capillaries and is carried back to the lungs to get exchanged by oxygen.
This process of exchange of gas is called as respiration.
The health of a pigeon guillemot bird is similar to the overall health of he sea where they live
True or false ?
The health of a pigeon guillemot bird is similar to the overall health state od the sea where they live - True
This statement is true because they represent the specific region from their habitat. The health of their habitat can be judged by their health. As they are primary or the secondary consumers of the food chains .
In a dihybrid cross of two parents who are heterozygous for bothtraits, what fraction of their offspring will be homozygous recessive for both traits traits
A dihybrid cross tracks two traits. Both parents are heterozygous, and one allele for each trait exhibits complete dominance. This means that both parents have recessive alleles, but exhibit the dominant phenotype. The phenotype ratio predicted for dihybrid cross is 9:3:3:1.
The study of genes and inheritance is called genetics. There are two types of genes and these are recessive and dominant.
The correct answer to the question is 1/16.
What is a dihybrid cross?The cross between two characters in two different parents is called a dihybrid cross.
According to the question, A dihybrid cross tracks two traits. Both parents are heterozygous, and one allele for each trait exhibits complete dominance. This means that both parents have recessive alleles but exhibit the dominant phenotype. The phenotype ratio predicted for the dihybrid cross is 9:3:3:1.
Hence, the total number of offspring produced in the dihybrid cross is 16 and the ratio of pure recessive offspring will be 1/16.
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Whats one risk for society when cloning animals?
One risk for society when cloning animals is a decrease in genetic diversity, which can lead to negative consequences. Cloned animals may also experience health problems or abnormalities, and there are ethical concerns surrounding the cloning process.
Explanation:One risk for society when cloning animals is a decrease in genetic diversity. Cloning involves creating genetically identical copies, which limits the genetic variability within a population. This can have negative consequences, such as increased susceptibility to diseases and lack of adaptability to changing environments.
Another risk is the potential for unintended consequences in the cloned animals' health and development. Clones may exhibit health problems or abnormalities due to errors or mutations introduced during the cloning process.
Furthermore, there are ethical concerns associated with cloning animals. The process of cloning can be considered unnatural and raises questions about the treatment of cloned animals and the implications for their welfare.
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Why are proteins important to cell?
They do most of the work in cells and are required for the structure, function, and regulation of the body's tissues and organs. For example, enzymes are proteins that speed up chemical reactions in the body and hormones, like insulin, are proteins that regulate the activity of cells or organs. Some proteins transport materials throughout your body, such as hemoglobin, which is the oxygen-transporting protein found in your red blood cells.