Option (B) low to high is right Answer
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We know that, Active transport moves ions and molecules across a membrane against the concentration gradient. It requires energy.
The characteristic features of active transport are:
-The movement of molecules in case of active transport is from lower concentration to higher concentration so it shows uphill transport.
-These have carrier proteins that are highly specific like enzymes for the substances to be carried across the membrane.
-The process of active transport can be inhibited by inhibitors that react with the protein side chains.
-The transport rate reaches its maximum when all the protein carriers are in use or get saturated with the substances to be carried.
The various types of processes that depend on active transport are:
-Absorption of amino acids from the gut.
-Absorption of mineral ions by plant roots.
-Excretion of urea and hydrogen ions by the mammalian kidney.
-Exchange of sodium and potassium ions in nerve cells.
-Filling of the contractile vacuole in amoeba.
The phloem in the leaves of a plant is rich in sugars because of the high rate of active transport.
Additional information :- Some intrinsic protein molecules function as molecular pumps. These permit the cell to go for active transport to accumulate glucose or ions against the concentration gradient. Cells that undergo active transport have abundant mitochondria that provide ATP needed to power active transport.▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬
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What evidence does the cladogram provide
The illustration below represents____,
which is responsible for genetic diversity.
Answer: Crossing over
Explanation: This is what a crossing over gene looks like it starts together and separates here is evidence below ⬇️
The illustration below represents the crossing over stage in meiotic cell division which is responsible for the genetic diversity in organisms. Thus, the correct option is B.
What is Crossing over?Meiosis is the type of cell division during which the chromosome number in the daughter cells become half of that present in the parent cells from which they are produced. From one parent cell four daughter cells are formed in meiosis.
Chromosomes forms the chromatids in the cell which form tetravalent with the non-sister chromatids of the homologous chromosomes. This stage is called crossing over where the genetic material present in each of the chromatids are exchanged which results into genetic diversity in a species. After the crossing over stage, the chromatids separate from each other and goes to different daughter cells.
Therefore, the correct option is B.
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In Mendel's experiments with pea plants, the allele for tall pea plants was dominant and the allele for short pea plants was recessive. When did Mendel see short pea plants?
A. when the plants had two dominant alleles for height
B. when the dominant allele for tall plants was not present
C. when the plants had both a dominant allele and a recessive allele
D. when the pea plants produced yellow seeds
PLS HELP!
Answer:
B
Explanation:
if the reccesive trait is what you want then you cannot have any dominant alleles present
match the definitions to the appropriate terms that describe the number of chromosomes.
what is the important of honey?
Answer:
Rich in antioxidants
Explanation:
High quality honey — which is minimally processed, unheated, and fresh — contains many important bioactive plant compounds and antioxidants, such as flavonoids and phenolic acids. ... Antioxidants help neutralize reactive oxygen species (ROS) in your body, which can build up in cells and cause damage.
after a macrophage ingests a pathogen, what does it do to the antigens?
Explanation:
After the macrophage ingests a pathogen, it creates an antigen on the surface of themselves, which signals the antigen to a corresponding helper T cell
best explanation of the role of dna and rna in making proteins?
Answer:
DNA stores the information for protein synthesis, and RNA carries out the instructions encoded in DNA.
DNA stores the information for protein synthesis, and RNA carries out the instructions encoded in DNA.
What is protein synthesis?
Cells create proteins through a process known as protein synthesis. Transcription and translation take place simultaneously. The conversion of genetic information from DNA to mRNA in the nucleus is known as transcription.
Initiation, elongation, and termination are its three stages. Following processing, the mRNA transports the instructions to a ribosome in the cytoplasm.
The ribosome, which is made up of proteins and rRNA, is where translation happens. The mRNA's instructions are read during translation, and tRNA then transports the appropriate sequence of amino acids to the ribosome. rRNA then facilitates the formation of bonds between the amino acids, resulting in a polypeptide chain.
A polypeptide chain may be further processed to create the finished protein after it has been created.
Therefore, DNA stores the information for protein synthesis, and RNA carries out the instructions encoded in DNA.
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I need a paragraph explaining what dna and rna is
plssshelp fast
Answer:
DNA is the 33 chromosomes. RNA is the protein that exists in viruses... that's All what I know.
Answer:
don't cheat
Explanation:
do it yourself
what color is monosaccharides Negative and positive test.
Pls hurry with answer
On a weather map what does this symbol mean.
////
A. Cloud Cover
B. Cold Front
C. Showers
D. Warm front
Answer:
Showers
Explanation:
I watch the news and weather
A wastewater manager is concerned about the increasing number of intestinal illnesses in his town and the corresponding increased levels of a pathogen
known to cause this illness found in wastewater samples. Which process should be used to track the source of this waterborne illness in his town?
O Epidemiology
O Civil engineering
Hydrologic tracing
O Water management
HELP ME PLZ
Epidemiology studies health-related states and occurrences (not simply diseases) in specific communities.Therefore, option (A) is correct.
What is epidemiology?The study and analysis of the distribution, patterns, and determinants of health and disease conditions in a given population is what epidemiology is all about. It is one of the most important aspects of public health, and it influences both policy decisions and evidence-based treatment by determining the factors that put people at risk for disease and setting goals for preventative medical care.
Descriptive, analytical, and experimental methods are the three primary approaches utilized in epidemiology. Descriptive epidemiology is the method that is utilized the most to investigate the occurrence of disease, despite the fact that all three can be employed to do so.
Therefore, option (A) is correct.
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Which type of invasin allows a pathogen to break down a blood clot that the body has generated to trap their spread
Answer:
Kinase
Explanation:
Without answer choices, my best guess is kinase because kinase is a
plant-pathogenic fungi that can break down blood clots.
what is the name of the trait that hides or masks another genetic trait?
A dominant trait is the name of the trait that hides or masks another genetic trait.
What do you mean by dominant trait?Dominance is the phenomenon of one variant of a gene on a chromosome masking or overriding the effect of a different variant of the same gene on the other copy of the chromosome.
The dominant trait is the one that is the first to appear or express itself visibly in the organism. Example: In human beings, we observe V-shaped hairline.
Dominant individuals are often most influential in their social groups, affecting movement, opinion, and performance across species and contexts.
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Answer the following questions based on the article you just read.
Microscope
Name one disadvantage of light microscopes.
Answer:
Light microscopes can only magnify up to 2000 times the original size. It is difficult to enhance the contrast between cells and their surroundings to see cell structure and movement with a light microscope.
Answer:
Light microscopes can only magnify up to 2000 times the original size. It is difficult to enhance the contrast between cells and their surroundings to see cell structure and movement with a light microscope.
Explanation:
k12
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what happens when a vacuole releases its store of water?
In the area illustrated, what process is evident over time?
In the area illustrated in the image attached, the biological process which is evident over time is: ecological succession.
Ecology can be defined as the scientific study of the relationship existing between living organisms such as plants and animals with respect to their physical and biological environment (abiotic factor).
In Ecology, ecological succession refers to a process through which the structure of an ecological (biological) community evolves or changes over time.
Generally, there are three (3) main types of ecological succession and these include:
Primary successionSecondary successionCyclic successionFrom the ecological (biological) community illustrated in the image attached, we can deduce that there is an evolution (change) in the species of plants growing over time. This ranges from weeds during the first visit to pine and oak trees during the seventh visit.
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Choose T (True) or F (False)
Answer:
a) true
b) true
c) false
d) true
e) false
Looking at the age structure provided. What is the best population control strategy option to deal with this situation?
Answer:
Empower women. Studies show that women with access to reproductive health services find it easier to break out of poverty, while those who work are more likely to use birth control. Promote family planning. Make education entertaining. Government incentives. One-child legislation.
Explanation:
how widespread was yellow fever during the 1600s and 1700s?
Answer:
The first yellow fever outbreaks in the United States occurred in late 1690s. Nearly 100 years later, in the late summer of 1793, refugees from a yellow fever epidemic in the Caribbean fled to Philadelphia. Within weeks, people throughout the city were experiencing symptoms.
cellular respiration how cells harvest energy
Answer:
Cellular Respiration: a process able to extract a large amount of energy from food molecules. In eukaryotic cells oxygen is a required component. This metabolic process is the main reason that animals have elaborate gas exchange organs such as lungs, gills and other systems. The goal of these systems is, of course, to get access to oxygen and to get rid of carbon dioxide.
Explanation:
En la maduración del cerebro que inicia desde la nuca hasta la frente la última área que madura es la corteza prefrontal que ayuda a calibrar riesgos, se ocupa del control de impulsos, el juicio y toma de decisiones.
Answer:123456Which statement best explains the main conflict and resolution in "How a Cat Played Robinson Crusoe"?
The cat is abandoned on an island. She adapts to the wilderness and survives until her family returns.
The family worries about the cat. They are overjoyed to discover that the cat is alive when they return.
The cat faces many adversaries, including rats and owls. However, she persists and is able to overcome each.
The cat learns how to hunt. She does not starve to death on the island.
Explanation:
how would you explain the formation of two subspecies of an organism from an original species
Answer:
splits into two or more genetically distinct descendant populations
Explanation:
New species form by speciation, in which an ancestral population splits into two or more genetically distinct descendant populations. Speciation involves reproductive isolation of groups within the original population and accumulation of genetic differences between the two groups
Help with biology plzz USA test prep
Answer:
see below
Explanation:
amplification: MUTATION = a type of mutation
independent assortment: MENDELIAN = how different
genes independently separate from one another
when reproductive cells develop
nondisjunction: MUTATION = a type of chromosomal
mutation
translocation: MUTATION = another type of chromosomal
mutation
codominance: MENDELIAN = a relationship between two
genes where neither allele is recessive and both
are expressed
insertion: MUTATION = a type of mutation
radiation: MUTATION = causes mutations
virus: MUTATION = causes mutations as the virus
replicates
deletion: MUTATION = a type of mutation
law of dominance: MENDELIAN = one of Mendel's laws
of inheritance
sex linked traits: MENDELIAN = linkage is an exception
to Mendel's law of independent assortment
incomplete dominance: MENDELIAN = when none of the
factors of a gene is dominant and there is a blend,
such as a red flower crossed with a white flower
turns out pink
law of segregation: MENDELIAN = one of Mendel's laws
of inheritance
substitution: MUTATION = a type of mutation
Como saber que algo está compuesto por una célula
Respuesta:
Las células están formadas por un núcleo y un citoplasma, encerradas por una pared delgada llamada membrana, que las separa de su entorno. Las células vegetales también tienen núcleo, citoplasma y membrana celular. La principal diferencia entre una célula vegetal y una animal es que las células vegetales tienen una vacuola, un cloroplasto y una pared celular.
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For english guys, the question and answer is there below in ENGLISH!
Question:
How to know that something is made up of a cell
Answer:
Cells are made up of a nucleus, and a cytoplasm, enclosed by a thin wall called a membrane, which separates it from its surroundings. Plant cells have a nucleus, cytoplasm, and a cell membrane too. The main difference between a plant and an animal cell is that plant cells have a vacuole, chloroplast, and a cell wall.
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Which elements atoms have 2 electrons in the first energy level and 4 electrons in the second energy level?
A. Carbon
B. Nitrogen
C. Helium
D. None of the above
Answer:
Carbon
Explanation:
Carbon has 2 electrons in the first energy level and 4 electrons in the third energy level.
what is the main product or purpose of photosynthesis?
Answer:
Plants are autotrophs, which means they produce their own food. They use the process of photosynthesis to transform water, sunlight, and carbon dioxide into oxygen, and simple sugars that the plant uses as fuel. These primary producers form the base of an ecosystem and fuel the next trophic levels.
Hope that helps. x
Beets add minerals to the soil. The greens are very good for the compost.
2. What substances travel in the Xylem of flowering plants?
Answer:
I think water is the substances
Chen draws a diagram to show water changing from a liquid to water vapor. Complete the sentences. _______All the water molecules in the liquid are moving. ________ Some of the molecules have more .________ These molecules move enough to escape the surface of the liquid. This is called . ________ This makes the liquid become
kinetic energy is needed by the molecules in order to escape from the surface.
All the water molecules in the liquid are moving randomly due to the presence of some energy in it. Some of the molecules have more kinetic energy due to absorption of heat energy from the surrounding environment.
Due to high kinetic energy, these molecules move enough to escape the surface of the liquid. This is called boiling point. This makes the liquid become gas so we can conclude that kinetic energy is needed by the molecules in order to escape from the surface.
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a giant tortoise traveling at 0.3 km/hr would take how many hours to complete a marathon(42km)
140 h
Explanation:
speed =distance/ time
so rearrange the formula
time= distance/ speed
time = 42/0.3
time = 140 h