None of the above statements is true. Phloem transport can occur from both source to sink and sink to source, and it is not solely determined by gravity
Sugars in the phloem actually move from a source (areas of production, such as leaves) to a sink (areas of utilization, such as roots or fruits). Roots are generally considered sinks rather than sources in regards to phloem transport. The cohesion-tension theory actually describes water transport in the xylem, not sugar transport in the phloem. Finally, phloem transport in plants occurs from the top to the bottom of plants, but this is due to pressure gradients, not gravity.
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Which of the following forms of energy is correctly paired with its definition?
Choose 1 answer:
A Potential energy - the energy associated with an object's motion
B
Kinetic energy - the stored energy of an object due to its position
Chemical energy - the energy contained within a system that is
responsible for its temperature
Thermal energy - the energy in a system due to its temperature
Answer:
[tex]\huge\boxed{\sf Thermal \ energy}[/tex]
Explanation:
Corrected definitions:
Potential energy:The energy possessed by a body due to its position is called Potential Energy.Kinetic Energy:The energy possessed by a body due to its motion is called Kinetic Energy.Chemical Energy:The energy possessed by the body due to its atoms and molecules is called chemical energy.Thermal Energy:The energy in a system due to its temperature is called Thermal Energy.[tex]\rule[225]{225}{2}[/tex]
Which of the following is not an example of diffusion?
A:a drop of food coloring spreading through a glass of water
B:perfume filling a room
C:salt spilled onto the table
D:air leaking from a tire
The spilled salt does not actively spread or disperse throughout the table. Option C does not show diffusion.
Diffusion is the movement of particles or molecules from an area of higher concentration to an area of lower concentration, resulting in their even distribution.
When salt is spilled onto a table, it does not undergo diffusion. Instead, it remains localized in the area where it was spilled.
The random movement of particles from a region of high concentration to a region of low concentration is known as diffusion, although in this situation, the salt spilled is not actively spreading or moving over the table.
When a drop of food colouring is added to a glass of water, the food colouring molecules spread out evenly throughout the water due to diffusion.When perfume is sprayed in a room, its scent spreads throughout the air in the room, reaching all areas evenly, thanks to diffusion.When air leaks from a tire, the high-pressure air inside the tire moves to areas of lower pressure outside the tire, leading to the even distribution of air molecules due to diffusion.Thus, the correct option is C.
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A kinase is an enzyme that phosphorylates target proteins, whereas a phosphatase is an enzyme that dephosphosphorylates target proteins. The reactions catalyzed by these enzymes, however are NOT exactly opposite. Why not
Phosphatase removes the phosphate groups from protein molecules during the dephosphorylation process. As a result, a phosphatase can deactivate a protein that has been activated by a kinase. Dephosphorylation, however, cannot be reversed.
What is Phosphorylation?It is a process in which a molecule gets attached to a phosphoryl group.
The opposite of the phosphorylation is dephosphorylation in which the molecule looses a phosphoryl group.
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__________ is the neurotransmitter used to carry a message from a motor neuron to a skeletal muscle fiber.
What evidence suggests that the development of schizophrenic disorders is not entirely explained by genetics?
None of the twin studies have found a concordance rate that even approaches 100 percent. This evidence suggests that the development of schizophrenic disorders is not entirely explained by genetics
Identical twins were studied for relation of schizophrenia to genetics. There is a less than 0.5 association between identical twins with identical genomes and schizophrenia. As a result, it can be concluded that schizophrenia is not solely a genetic disorder.Although schizophrenia frequently runs in families, no one gene is known to be the cause. It's more likely that particular gene combinations increase a person's susceptibility to the illness. Nevertheless, schizophrenia is not a guarantee if you have these genes.The possibility that a person may acquire the illness is influenced by environmental risk factors such as pregnancy and birth problems, childhood trauma, migration, social isolation, urbanization, and substance misuse, operating alone and in combination throughout time at various levels.learn more about schizophrenic disorders here:https://brainly.com/question/7201954
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Which trophic levels would be impacted by lower yields of fungi (mushrooms) due to, for example, acid rain?
Fungi belong to the decomposer topic level because they decompose organic matter and return the elements to the producer for reuse. Therefore, if mushrooms have low yields, less material to break down, and fewer minerals are available to them, they will be directly affected.
It also indirectly affects everything above the nutritional stage, which depends on the producer.
Another nutritional stage, the decomposer or transformer, is composed of organisms such as bacteria and fungi that break down dead organisms and waste into nutrients that the producer can use.
The decomposer forms the final trophy level. When living things produce waste or die, inanimate objects remain. Nutrients and organic matter are trapped in this substance. Decomposers like fungi break down waste and return it to raw nutrients.
In a system of five trophic levels, organisms are classified according to their lifestyle. The five levels include primary producers (plants), primary consumers (herbivores), secondary consumers, tertiary consumers, and detritivores (decomposers).
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Select the positive impacts of technology on animal agriculture.
more hygienic and humane practices
improved fertility of livestock
stronger and leaner livestock
introduction of new vegetation
animal immunity to diseases
increased demand for meat
insect-resistant crops
Answer:
improved fertility of livestock.stronger and leaner livestock.animal immunity to diseases.Explanation:
Whe you talk of Animal agriculture you are referring to those practices of breeding animals for the production of animal products and also for recreational uses/purposes. Technology has impacted animal agriculture positively through:
improved fertility of livestock. of livestock.stronger and leaner livestock. of livestock.stronger and leaner livestock.animal immunity to diseases.What do traits of anatomically modern humans include?
The traits of the anatomically modern humans include the following below:
High vertical foreheadRound and tall skullSmall browridges.What is Anatomy?This is defined as a branch of science which involves the study of the body structure of humans, organisms etc and how they are responsible for certain types of activities performed by certain parts of the body. For example, the skull is a structure which helps to protect the brain and other vital organs which are present in the body system.
Due to evolution, the modern experienced some changes anatomically which include round and tall skull and a high vertical forehead with the other features which are mentioned above. This helps it to see objects from different directions.
This is therefore the most appropriate anatomically modern human traits present today.
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all but which of the following can work against a viral infection
The question is incomplete but antivirals, cells of the immune system and antibodies can work against viral infection.
What is a viral infection?A viral infection is any disease caused by a virus that is able to infect and produce harm to a suitable host.
The immune system consists of different barriers to fight against viral infections, one of which is composed of immune cells and antibodies that work together to recognize and destroy pathogenic viruses.
For example, the cells that can work against a viral infection include cytotoxic T cells, macrophages and NK cells.
In conclusion, antivirals, cells of the immune system and antibodies can work against viral infection.
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Answer: Antibiotics
Explanation:
Part a label the structures of an animal cell. drag the appropriate labels to their respective targets.
Animal cells are eukaryotic cells protected by a semipermeable membrane, and composed of several organelles immersed in the cytosol. Genetic material is in the nucleus.
What is an animal cell?These are eukaryotic cells. They carry their genetic material in the nucleus and mitochondria. Their organelles are located in the cytosol, and the whole cell content is protected by a flexible semipermeable cell membrane.
Among the organelles, we can mention,
Vesicles and vacuoles whose function is to store water, ions, and waste intracellular substances. Mitochondria in charge of energy productionThe endoplasmatic reticulum and Golgi complex are involved in protein synthesis, maturation, and transport.There are also structures like microtubules and actin filaments that provide structure, shape the cell, and are involved in intracellular transport.
Animal cells also have pigments that provide color to tissues like the hair, the skin, or the eyes.
Depending on the cells and their function, we can also find cilia, flagella, or microvillus on their surface. Microvilli are fingerlike projections.
Now, we can laber each structure of the animal cell. You will find the image in the attached files.
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Answer:
Explanation:this is the answer guide
100 points:
are these declarative memories or non declarative memories?
Put D for declarative and N for non declarative:
-Deciding on his favorite ice cream
-Recalling a synonym for the opposite of the word "good"
-Riding a bicycle
-Conveying the nature of his condition
- Deciding on his favorite ice cream - N
- Recalling a synonym for the opposite of the word "good" - D
-Riding a bicycle - N
-Conveying the nature of his condition - N
Nondeclarative memory(N) is a grouping of different memory types that work automatically and store data that cannot be accessed by conscious remembrance. Declarative memory(D) is the capacity to consciously recall declarative knowledge, usually in response to a specific request to remember, after having retained it for a long amount of time.
Therefore, Deciding on his favorite ice cream , Riding a bicycle and Conveying the nature of his condition are all non declarative memory(N)and Recalling a synonym for the opposite of the word "good" is a type declarative memory(D).
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how does precipitation helps in formation of soil
Answer: increase the degree of weathering and therefore the extent of soil development.
Explanation:
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Which represents the cross between parent plants if one is heterozygous and has yellow-colored pods and the other is homozygous and has green-colored pods?
The cross between parent who is heterozygous and has yellow-colored pods and the other is h0mozygous and has green-colored pods is Yy x yy; option A.
What is a heterozygous cross?A heterozygous cross is a cross is a cross between one or two parents who have different copies of alleles of the same gene.
Assuming Y for yellow is dominant over y for green;
The cross between parent who is heterozygous and has yellow-colored pods and the other is h0mozygous and has green-colored pods is represented below:
Yy x yy = Yy, Yy, yy, yy
In conclusion, the offspring will be two heterozygous yellow-colored pods and two h0mozygous that has green-colored pods.
In conclusion, the offspring of the heterozygous and h0m0zygous parents will have yellow and green pods.
Note that the complete question is as follows:
Which represents the cross between parent plants if one is heterozygous and has yellow-colored pods and the other is hom0zygous and has green-colored pods?
Which represents the cross between parent plants if one is heterozygous and has yellow-colored pods and the other is hom0zygous and has green-colored pods?Yy ´ yy
Which represents the cross between parent plants if one is heterozygous and has yellow-colored pods and the other is hom0zygous and has green-colored pods?Yy ´ yyYY ´ yy
Which represents the cross between parent plants if one is heterozygous and has yellow-colored pods and the other is hom0zygous and has green-colored pods?Yy ´ yyYY ´ yyYy ´ Yy
yy ´ yy
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Which of the following diseases can be passed to another person through an animal bite?
1. Lyme disease
II. Malaria
III. Cholera
Ol only
Oll only
OI and II
O II and III
The disease that can be passed to another person through an animal bite are;
MalariaMalariaCholeraTherefore, the answer is option D.
What are vectors?Vectors are carriers of disease-causing agent or pathogens.
Vectors transfer pathogens that are capable of causing diseases from an infected host to an healthy host.
Malaria is a disease spread by mosquito, in which a protozoan, plasmodium, multiplies in blood every few days.
Cholera is caused by certain strains of the Vibrio cholerae bacterium through ingestion of contaminated water or food, usually marked by severe gastrointestinal symptoms.
The following are diseases that can be transferred via vectors:
Malaria; which is caused by a plasmodium pathogen and carried by a mosquitoCholera; which is caused by a bacterium carried by a houseflyLearn more about vectors at: https://brainly.com/question/14987471
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Answer:
C- | and ||
Lyme and malaria
Explanation:
I took the test and got it right :)
A part of the shoulder complex, also referred to as the breastbone, is the _____.
Answer:
sternum
Explanation:
sternum, also called breastbone, is the elongated bone in the center of the chest
what do you think is the greatest challenge to survival faced by both plants and anivlams that live in the desert
Getting and keeping enough water in their bodies
Water loss is the greatest challenge to organisms that live in a desert biome
What do you think is the greatest challenge to survival faced by both plants and anivlams that live in the desert ?They face scorching hot air and ground temperatures during the summer season, and unpredictable and limited water even during the rainier seasons.
In order for plants to survive in the desert, they have adaptations that allow them to collect and store water and moisture and, prevent moisture lossAnimals survive in deserts by living underground or resting in burrows during the heat of the day.Learn more about Dersert plants and animals here:
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All athe following are present in membrane except globular proteins cholesterol traces of carbs phospholipids
Globular proteins are not present in the membrane.
What is the composition/structure of a cell membrane?The fluid mosaic model, which is the presently accepted explanation for the composition of the plasma membrane, was originally put forth in 1972. The plasma membrane is a mosaic of elements, primarily phospholipids, cholesterol, and proteins, that move fluidly and freely in the plane of the membrane, according to the fluid mosaic model.
Lipids (such as phospholipids and cholesterol), proteins, and carbohydrate groups that are joined to some of the lipids and proteins make up the plasma membrane.
A phospholipid is a lipid composed of glycerol, two fatty acid tails, and a head group that is phosphate-linked. Phospholipid bilayers, two layers of phospholipids with their tails pointing inward, are a common component of biological membranes.In the center of the membrane, next to phospholipids, is cholesterol, a different lipid made up of four fused carbon rings.Membrane proteins can enter the plasma membrane only partially, cross it totally, or remain loosely connected to either the inside or outside face of the membrane.The outer layer of the plasma membrane contains carbohydrate groups, which are joined to lipids or proteins to form glycolipids or glycoproteins.Learn more about plasma membrane here:
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The distance between the right eye and left eye provides a cue for depth perception known as?
Answer:
PUPILLARY DISTANCE (PD)
(01.02 MC)
Darren is a wildlife biologist studying deer and wolf species in a nature reserve. He wants to know what is causing a decrease in the wolf population within the nature
reserve. What should Darren do next to find the answer to his question?
O Formulate a question about the wolf and deer populations in the reserve
Research causes of wolf population decline within other nature reserves
O Make a prediction explaining why wolf populations are decreasing
O Create controlled variables for a wolf population study of the reserve
Darren should research the causes of wolf population decline within other nature reserves to find the answer to this question.
Hence Option (b) is correct.
Wildlife originally referred to undomesticated animal species, but it has now expanded to include all living things that develop naturally or exist in the wild without human intervention.
Some major reasons that can cause a decline in the population of wolves or any wildlife are :
1) Exploitation: The demand for animals has increased as human populations have increased. So they overexploit the wildlife for selfish reasons.
2) Habitat loss
3) Human Land Use and Wildlife Competition for Space that leads to degradation of the habitat.
4) Invasive species: Invasive species are animals that are not native to the area and which enter the area, quickly breed, and spread.
5) Climate change due to pollution, global warming, and some other factors.
6) Diseases
Hence, Darren should research the causes of wolf population decline within other nature reserves to find the answer to this question.
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Use what you know about fossils to choose the correct answers from the drop-down menus to complete each
statement.
If the same organism appears on two different continents, this is evidence of
Fossils show how organisms change, or
v over time.
Fossils provide a record of animals that are
x], or no longer living.
The answer to the questions include the following:
If the same organism appears on two different continents, this is evidence of plate movement.Fossils show how organisms change, or evolve over time.Fossils provide a record of animals that are extinct or no longer living.What is a Fossil?This is defined as the remains of plants and animals which have been preserved in the earth crust. Fossils helps in the study of organisms and how they evolved from others as a result of a change in their living conditions. This happened so as to enable them survive thereby giving rise to more fit offspring.
Fossils provide a record of animals that are extinct or no longer living such as dinosaurs etc. Similar organisms being present on different continents is as a result of plate movement thereby making it the most appropriate choices.
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need help with this in bio lol
Answer:
[tex]\huge\boxed{\sf Possibility = 1/4}[/tex]
Explanation:
Let the dominant orange fur be denoted by F and the recessive white fur by denoted by f.
So, two heterozygous tigers (Ff) mate with eachother.
Ff x FfIf we make a Punnett Square of this cross, we will have the possibility of having 4 offspring.
Homozygous Dominant (FF)Heterozygous Dominant (Ff)Heterozygous Dominant (Ff)Homozygous Recessive (ff)The offspring in which recessive trait will be visible will be ff, which means only 1 offspring among the 4 offspring will have white fur.
Possibility = 1/4
[tex]\rule[225]{225}{2}[/tex]
Evidence that supports the prokaryotic origins of mitochondria and chloroplasts are all of the following except __________.
Your question was incomplete (please check below the full content). The evidence that supports the prokaryotic origins of mitochondria and chloroplasts do not include multiple DNA copies associated with inner membranes.
What is organellar DNA?The organellar DNA is the genome contained within mitochondria and chloroplasts, which is independent of nuclear eukaryotic DNA.
The organellar DNA contains multiple DNA molecules, which are found in association with the inner membrane, ant is not found in prokaryotic life forms.
The complete question in this case is: "Evidence that supports the prokaryotic origins of mitochondria and chloroplasts are the presence of mitochondria, a eukaryote engulfing prokaryotic photosynthetic cells, and non-photosynthetic eukaryotes, EXCEPT."
The endosymbiotic theory states that mitochondria and chloroplasts evolved from prokaryotic microorganisms that entered into a primitive eukaryotic cell.
This theory is supported by certain features of mitochondria and chloroplasts such as a similar size to prokaryotes.
In conclusion, evidence do not include the arrangement of the organellar DNA.
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Pancreatic amylase catalyzes the breakdown of oligosaccharides to disaccharides with the addition of water. What classification of enzymes would amylase be in
Cytotoxins induce:___.
a. the creation of peptide fragments
b. perforations in the cell membrane
c. cell division
d. apoptosis
Cytotoxins induce perforations in the cell membrane and apoptosis. So the correct option is (b) and (d).
By releasing two different types of preformed cytotoxic proteins—the pore-forming protein perforin, which creates holes in the target cell's membrane so the granzymes can enter, and the granzymes, which appear to be able to induce apoptosis in any type of target cell—cytotoxic CD8 T cells kill their target cells.
Particularly, the production of TNF-alpha and IFN-gamma by cytotoxic T cells promotes macrophage activation. Infected cells are attacked and eliminated by macrophages, which also stop uncontrolled cell proliferation like tumours.
Therefore, Cytotoxins induce perforations in the cell membrane and apoptosis. So the correct option is (b) and (d).
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A/an ____ is a fluid-filled sac in the scrotum along the spermatic cord leading from the testicles.
A/an seminal vesicle is a fluid-filled sac in the scrotum along the spermatic cord leading from the testicles.
The male reproductive system includes a pair of glands called seminal vesicles that are located on the back of the bladder base in men.Their major job is to create the semen-making fluid that is expelled during ejaculation.The majority of the fluid that makes up semen is produced and stored by two tiny glands called seminal vesicles. The seminal vesicles' fluid is sent into the ejaculatory duct during ejaculation, where it might mingle with sperm and other reproductive fluids.The androgen-dependent seminal vesicle glands release a sizeable portion of the fluid that eventually turns into semen (seminal fluid). The majority of species' contributions to semen volume come from seminal vesicle glands.learn more about seminal vesicles here: https://brainly.com/question/11223304
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What were the independent, dependent, and control variables in your investigation? Describe the variables for the simulation with the moths and birch trees.
The experiment is not found here but dependent variables may include the growth rate of moths, whereas the independent variable may be the temperature and the control is water.
What is a dependent variable?A dependent variable is the variable that is being modified by the conditions of the experiment (in the example, the growth is dependent on the temperature).
Moreover, a control variable is any condition that remains constant throughout the experiment (in this case, the amount of supplied water).
In conclusion, dependent variables is the growth rate, whereas the independent variable is the temperature and the control is water.
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I need help sooo much. I really appreciate it
Answer:
D
is the answer because as you see the percentage increase
Answer:
900
\
Explanation:
The invention that led to the widespread transport of livestock was the railroad system.
True
False
Answer:
false
Explanation:
Barbed wire had a major impact on the cattle industry of the Western U.S so many farmers used barbed wire.
What is the Universal Genetic code?
A) All living things have DNA and RNA
B) All living things have the same size and shape of cells
C) The same type of cell membranes and cell walls are in both plant and animal cells
D) All DNA and RNA are contained in the nucleus of the cell
Answer:
A.
Explanation:
Every living organism needs a way to create energy and new cells, and to do that, they need something to direct that, which is where DNA and RNA come in. So therefore, all living things not only need, but have DNA and RNA.
It is that the living beings all are made up of both DNA and RNA. The correct answer is option A.
What is the full form of DNA and RNA ?It stands for deoxyribonucleic acid and ribonucleic acid.
The genetic code of the universe is universal. That is like the all of the known kind of the living organisms just use same genetic code. It shows by nearly all of the organisms which share a common kind of evolutionary history. The present genetic code is just unambiguous. Each of the codon codes is just one amino acid .
A genetic code that is shared by the diverse organisms which helps to provide important kind of evidence for common origin of the life on the Earth. That is like many of the species on the Earth today are likely just evolved from the same ancestral organism in that the genetic code is already present.
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(a) Define a microscope.
(b) List three uses of a compound microscope.
(c) Tabulate 5 differences between optical microscope and electron
microscope
(a) Briefly account on how microscope was discovered.
(b) State two uses of magnifying lenses
(c) Distinguish between the types of magnifying lenses
Answer:
A microscope is an laboratory instruments that can be used to observe small objects,even cells.