Answer:
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Answer: a
Explanation:
In physical map the distance was measured in
Which of the following statements is TRUE about Fungi? All fungi are heterotrophic. All fungi are symbiotic. All fungi are flagellated. All fungi are pathogenic.
All fungi are heterotrophic is the true statement among the multiple options about fungi.
Fungi are eukaryotic organisms that are often seen as mushrooms, moulds and yeasts. These are heterotrophic organisms found everywhere. All of the fungi are not pathogenic evident by edible usage of mushrooms and yeasts.
Mycorrhiza and lichen are example of symbiotic fungi while Trichoderma is an example of free living fungi. The heterotrophic mode of nutrition of fungi is evident in multiple forms like parasite, saprophyte and holozoic nutrition.
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Which of the following statements concerning B-cell receptors (BCRs) is FALSE?
O They are expressed only in response to an encounter with a particular antigen.
O They are complementary in shape to a specific antigenic determinant that they may or may not encounter.
O They are bound to the surface of B-lymphocytes and have two antigen-binding sites.
O The repertoire of all of the BCRs can exhibit tremendous immunity against many possible antigens.
O Multiple identical BCRs are present on a given B-lymphocyte, however BCRs from one B-lymphocyte are different than that of other B-lymphocytes.
They are expressed only in response to an encounter with a particular antigen. This is the false statement about B-cell receptors (BCRs).
A transmembrane protein called the B cell receptor (BCR) is located on the surface of a B cell. An immunoglobulin molecule that is membrane-bound and a signalling component makes up a B cell receptor. On the outer surface of these lymphocyte cells, the former normally forms a type 1 transmembrane receptor protein.
IgM and IgD, two variants of the B cell receptor that are closely related, are present on the surface of B cells before launching an immune response. IgM and IgD execute many of the same tasks and are mostly interchangeable.
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Determine the character state of each character for each plant taxon in the table below. Enter the character state in this table. Examine the plant specimens in lab, the written information accompanying them, and your lab manual to determine the specific character state for each species. We have provided character states to you for many of these. You may need to refer to the next chapter for some of this information.
For the five plant taxons given, the character states are as follows: Acer has an ovate-shaped leaf and an opposite arrangement, Betula has an ovate-shaped leaf and an alternate arrangement,
| Plant Taxon | Leaf Shape | Leaf Arrangement |
|------------|------------|-----------------|
| Acer | Ovate | Opposite |
| Betula | Ovate | Alternate |
| Quercus | Obovate | Alternate |
| Salix | Elliptic | Alternate |
| Thuja | Linear | Opposite |
1. Acer: Leaf Shape: Ovate; Leaf Arrangement: Opposite
2. Betula: Leaf Shape: Ovate; Leaf Arrangement: Alternate
3. Quercus: Leaf Shape: Obovate; Leaf Arrangement: Alternate
4. Salix: Leaf Shape: Elliptic; Leaf Arrangement: Alternate
5. Thuja: Leaf Shape: Linear; Leaf Arrangement: Opposite
For the five plant taxons given, the character states are as follows: Acer has an ovate-shaped leaf and an opposite arrangement, Betula has an ovate-shaped leaf and an alternate arrangement, Quercus has an obovate-shaped leaf and an alternate arrangement, Salix has an elliptic-shaped leaf and an alternate arrangement, and Thuja has a linear-shaped leaf and an opposite arrangement.
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In eukaryotes, nucleoli contain many tandem repeat copies of which genes, transcribed by RNA polymerase I? a. rRNA b. TRNA c. siRNA d. none of the answers is correct e. mRNA
Genes that are transcribed by the RNA polymerase ribosomal RNA rRNA, a protein in cells that is a component of a nutrient organelle known as just a ribosome, are found in tandem repeat copies in large numbers in the nucleoli of eukaryotes.
What is the purpose of rRNA?Rosposomal RNA rRNA is a molecule found in cells that's also exported to a cytoplasm and is a component of the ribosome, an organelle that produces proteins. It aids in the conversion of messenger RNA (mRNA) from one form of the genetic code to another, called translation.
In which location is rRNA made?The nucleolus is where rRNA in mammalian cells is made. A cell's nucleus contains the nucleolus, which is a substantial structure. The location of rRNA synthesis, it can be found in eukaryotic cells. Some nucleolus-located genes produce the rRNA protein.
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In order to transfer, an F factor must have which of the following? a. oriV and its own DNA polymerase b. oriV and tra genes c. oriT and tra genes d. oriT and its own DNA polymerase e. oriT, tra genes, and its own DNA polymerase
In order to transfer, an F factor must have oriT and tra genes.
The origin of transfer (oriT) is the sequence at which conjugative transfer of plasmid DNA is initiated and is essential for cis of plasmid recruitment.
Transformer (tra) genes regulate all aspects of somatic differentiation in Drosophila melanogaster females and are non-functional in males. We isolated the tra gene as part of a 200 kb chromosome walk.
The tra operon of the F family of conjugative plasmids encodes most of the proteins involved in bacterial conjugation. This study shows that activation of tra operon transcription requires the cooperative binding of her two proteins, TraJ and ArcA, to flanking sites immediately upstream of the major tra promoter, PY.
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An ecosystem is a natural unit consisting of all the living organisms in an area functioning together with all the nonliving physical factors of the environment.
Answer:
An ecosystem is a community of living organisms (biotic factors) and nonliving (abiotic) factors that interact with one another.
Explanation:
An ecosystem includes all of the living things (biotic factors) in a given area, interacting with each other and also with their non-living (abiotic) environment.
Ecosystems are larger than a habitat, or a community or a forest type.
Ahmad is a research scientist trying to secure funding for his facility. He and his colleagues specialize in the study of zoonotic diseases, but they need funding to continue their work. Which fact would Ahmad MOST likely include in his proposal for funding?
A.
The population is shrinking and research like this could hold the key to longer lifespans.
B.
Zoonotic disease cases are on the rise because a larger number of people have greater contact with wild and domestic animals.
C.
The depletion of the rain forest threatens to destroy valuable plants that could be used to create medicines.
D.
Stemming the spread of zoonotic disease will help undeveloped countries improve farming practices.
Answer:
UnlockUnlock
Explanation:
How do plant cells make store and transport proteins?
Whereas the majority of proteins pass through the Golgi on their way to other cell destinations,
How are proteins transported in plant cells?In plant cells, the Golgi gear is the key organelle for polysaccharide and glycolipid synthesis, protein glycosylation, and protein classification towards various cellular sections either by vesicular shuttles or through the maturation of cisternae from the cis‐ to the trans‐face, a digit of membrane proteins reside in the dissimilar Golgi.
Plants move proteins inside these cells. This procedure, known as protein transport, is the footing for a complex biological response mechanism. During every second of a plant cell's life, a host of protein transports take place.
So we can conclude that There are many storage proteins in plant tissues that gather into protein storage compartments.
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An egg with 22 chromosomes that is fertilized by a normal sperm will result in O nondisjunction during subsequent mitosis. O a zygote with disomy. O a zygote with monosomy. O a zygote with normal chromosome number. O a zygote with trisomy.
An egg with 22 chromosomes that is fertilized by a normal sperm will result in a zygote with normal chromosome number.
Typically, the male and female gametes (sperm and eggs) have 23 chromosomes apiece. However, occasionally an egg will be missing one chromosome because the chromosomes did not adhere to the spindle fibres appropriately during meiosis.
The egg would then only contain 22 chromosomes. A zygote produced from such an egg would have just 45 instead of the typical 46 chromosomes if fertilised by a normal sperm (containng 23 chromosomes). This ailment is known as monosomy.
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Emulsification of fats in the small intestines is due to the action of bile which is released into the intestine from the
Answer:
Explanation:
Fat emulsification is the process of increasing the surface area of fats in the small intestine by grouping them into small clusters. This is the responsibility of bile, a liquid created by the liver and stored in the gallbladder.
a solution of 100 mmole/L KCl is separated from a solution of 10 mmole/L KCl by a membrane that is very permeable to k+ ions, but impermeable to Cl- ions. How many mmole of K+ and how many Cl-?
If a membrane that is particularly permeable to K+ ions but impermeable to Cl- ions separates a solution of 100 mmole/L KCl from a solution of 10 mmole/L, the number of mmoles of K+ and Cl- on both sides will equal 100. (10 mmoles).
What is a mole?Generally, If a solution of 100 mmole/L KCl is separated from a solution of 10 mmole/L KCl by a membrane that is very permeable to K+ ions, but impermeable to Cl- ions, the number of mmoles of K+ will be the same on both sides of the membrane (100 mmoles) and the number of Cl- will also be the same on both sides of the membrane (10 mmoles).
This is because the membrane is only permeable to K+ ions
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1. Imagine that you move from Vancouver to Kamloops. Predict how and explain why the average temperatures you experience will now be different in winter and in summer.
GIVING BRAINLIEST
If I were to move from Vancouver to Kamloops, I would likely experience different average temperatures in winter and summer. This is because Vancouver and Kamloops are located in different regions of British Columbia and have distinct climates.
What is the temperatures about?In Vancouver, the climate is characterized as a maritime climate which is mild with no dry seasons, the average temperature in winter is around 5-8C and in the summer is around 15-20C, the city is known for its rainy weather throughout the year.
On the other hand, Kamloops has a semi-arid climate, which is characterized by hot summers and cold winters. The average temperature in winter is around -5C and in the summer is around 25C, the city is known for its dry and sunny weather throughout the year.
Therefore, the difference in average temperatures in winter and summer is mainly due to the difference in the distance between the two cities and the coastal and inland location. The proximity of Kamloops to the interior of British Columbia results in a greater variation in temperature between the seasons due to the lack of a moderating influence from the ocean.
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Eukaryotic cells undergo mitosis, which produces two identical daughter cells. These cells are identical to each other and to the original parent cell. From the options below, select ALL of the reasons why a eukaryotic cell undergoes mitosis and the cell cycle.
Answer: The formation of a new cell from the old cell is called cell division.
Explanation:
There are two types of cell division.
A cell division that has the same number of chromosomes as the parent cell is called mitotic cell division. The purpose of mitosis is to increase the number of cells to form a tissue.
The increase in the number of cells helps to make the tissue and repair the damaged cell.
Hence, the correct answer is the repair of damaged cells.
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You are a scientist trying to determine whether a new drug will help treat heart disease. All of the following will generally increase the strength of your scientific study and your confidence in the results, except:
A) Increasing the number of patients in the study
B) Giving a placebo to the control group, thus controlling for the possibility that there will be a psychological effect of just receiving a pill
C) Making sure that the person handing out the pills knows which patients are getting a placebo versus which are getting the treatment
You are indeed a scientist investigating whether a novel medication will be successful in treating heart disease. Increase all other aspects of your scientific investigation, with the exception of patient enrollment.
Describe the heart.The diameter of a fist, your heart is located in the center of your chest, leaning marginally to the left. It is the muscle that your circulatory system depends on to pump blood throughout your body while your heart beats.
How is the heart's function?Your heart beats roughly 100,000 times every day. Your circulatory system is a network of coronary arteries that continuously circulates around five liters of blood throughout your body. In order to support your organs, this blood transports oxygen and vitamins to various body areas.
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Aquarium saltwater fish must maintain a salinity level of 1.026 to match ocean water. What might happen to the fish population in an aquarium if the salinity level dropped to 1.009?
Responses
No population change
No population change
Fish population would decrease
Fish population would decrease
Fish population would increase
Aquarium saltwater fish must maintain a salinity level of 1.026 to match ocean water therefore what might happen to the fish population in an aquarium if the salinity level dropped to 1.009 is fish population would decrease which is denoted as option B.
What is Population?
This is referred to as the total number of organisms in an area at a given point in time.
In a scenario whereby the salinity is too low then it may lead to overhydration of the fishes which will cause their kidneys to shut down and die thereby leading to a decrease in their population.
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2. When bioengineering food crops, what are scientists manipulating?
PLEASE HELP MEEEE
The DNA of genetically modified (GE) foods has been altered using genes from other plants or animals. Scientists extract a desired characteristic gene from one plant or animal and implant it into the cell of another plant or animal.
Scientists can use genetic engineering to transfer desirable genes from one plant or animal to another. Genes can also be transferred from one species to another. GMOs are another term for genetically engineered organisms.The technique of developing GE foods differs from selective breeding. This entails choosing plants or animals with desirable characteristics and breeding them. This produces children with the desired characteristics over time.One of the drawbacks of selective breeding is that it might result in undesirable features. Scientists can use genetic engineering to insert a single gene. This prevents the introduction of additional genes with undesired properties. Genetic engineering also helps to accelerate the process of developing novel foods with desired characteristics.
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4. Plan an experiment that neurobiologists could use to show that an action potential travels faster along a myelinated axon than along a nonmyelinated axon.
types of electrophoresis
Answer:
Electrophoresis is a technique used to separate molecules based on size and charge. There are several types of electrophoresis, including agarose gel electrophoresis, capillary electrophoresis, two-dimensional electrophoresis, and isoelectric focusing.
Explanation:
how many codons would be needed to code for a protein that has 50 amino acids
A codon is a sequence of three nucleotides that codes for a specific amino acid. In order to code for a protein that has 50 amino acids, it would require 50 codons.
This is because each amino acid is coded for by a specific codon, and the sequence of codons determines the sequence of amino acids in a protein. Since there are 20 common amino acids used in proteins, and the genetic code is redundant, more than one codon can code for the same amino acid.
It's important to note that the genetic code is redundant, meaning that more than one codon can code for the same amino acid, this means that the total number of codons used to code for a protein with 50 amino acids may be greater than 50.
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Four of the five answers listed below are heterotrophs. Select the exception.
a. fungus
b. carrot
c. earthworm
d. lobster
e. parasite
Four of the five answers listed below are heterotrophs b. carrot
What exactly are autotrophs and heterotrophs?In contrast to heterotrophs, which cannot produce their own food and must rely on autotrophs for sustenance, autotrophs are creatures that create their own food through the process of photosynthesis.
Because they lack chlorophyll, some plants must get their nutrition from other plants. These plants are referred to as heterotrophic plants because they display a heterotrophic method of feeding.
Zoo-pathogenic fungi are parasitic fungus found on animals. Numerous illnesses, including ringworm, favus, epidermophytosis, and tinea versicolor, are brought on by these fungi.
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with one example for each , briefly describe the types of motion in walking gait of mammals.
In the walking gait of mammals, the two main types of motion are sagittal plane motion and transverse plane motion.
The sagittal plane motion refers to the forward and backward movement of the limbs, as they swing forward and backward in the sagittal plane. For example, during a walking gait, the pelvis and trunk of a mammal move in a sagittal plane as one leg is lifted and moved forward, then lowered to the ground, and the opposite leg is lifted and moved forward.
The transverse plane motion refers to the side-to-side movement of the limbs, as they swing out to the side and then back in again in the transverse plane. For example, the hip joint of a mammal moves in a transverse plane, as it rotates to bring the leg forward and then back.
Additionally, there is a rotary motion, which refers to the rotation of the limbs around the long axis of the bone, as the limb moves through the gait cycle. For example, the ankle joint of a mammal rotates during the walking gait, as the foot is lifted, moved forward, and then lowered to the ground.
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define different parts of eye
Sclera is the outer covering a protective tough white layer called the sclera, Cornea is the front transparent part of the sclera which light enters the eye through the cornea while Iris is a dark muscular tissue and ring-like structure behind the cornea.
What is eye?Eye is the vertebrate organ of sight composed of a pair of fluid filled spherical structures that occupy the orbits of the skull. Incoming light is refracted by the cornea of the eye and transmitted through the pupil to the lens which focuses the image onto the retina.
Therefore eye is a sensory organ It collects light from the visible world around us and converts it into nerve impulses. The optic nerve transmits these signals to the brain which forms an image so thereby providing sight
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Identify one trait that both F and G have, but H does not.
3. Discuss how the following cells are specialized /modified to their function. a) Root hair cell. (3 marks) b) Guard cell. (3marks) c) Palisade cell. (3 marks)
Specialized plant cells have specific adaptations that make them good at their function. They include root hair cell, guard cell and palisade cell.
How is the root hair cell modified?Because they have a wide surface area to speed up absorption, root hair cells are designed to absorb water and mineral ions. They also have a large number of mitochondria, which use glucose as fuel during respiration to produce the energy required for active transport.
What is the guard cells' functional modification?Adapted epidermal cells are referred to as guard cells. It has bigger size, chloroplasts, and micro fibrils in the cell wall that are oriented radially. In addition to providing a barrier against pathogenic invasion, each pair of guard cells and the controlled pore they enclose, known as a stoma or stomate, in terrestrial plants serve as a conduit for transpirational water release and atmospheric photosynthetic gas exchange.
How are palisade cells modified to perform their job?Long, thin Palisade Spongy Mesophyll Cells make up the palisade Layer. They are ideal for performing photosynthesis because they are rich in chlorophyll and have a long shape that promotes light absorption.
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If you have inserted a gene in the Ti plasmid, the next step in genetic engineering is
The next step in genetic engineering after inserting a gene into the Ti plasmid is to transfer the plasmid to a host organism, confirm the stable integration of the plasmid, study the effects of the gene, and optimize gene expression before scaling up the production and purifying the protein of interest.
The next step in genetic engineering after inserting a gene into the Ti plasmid is to transfer the plasmid to a host organism.
This is typically done through a process called transformation, in which the plasmid is introduced into the host organism using various techniques such as electroporation, chemical transformation, or heat shock.
The host organism will then be able to express the new gene and produce a protein or other product encoded by the gene. Once the transformed host organism has been obtained it is necessary to confirm that the plasmid has been stably integrated into the host genome and the new gene is being expressed.
After that, the researcher would need to study the effects of the gene and its product on the host organism. Depending on the specific application, this may involve testing the host organism's growth, metabolic activity, or ability to resist disease.
The researcher may also want to optimize the expression of the new gene, this could involve optimizing the culture conditions, or using promoters or other genetic elements to increase the rate of gene expression. The final step is to scale up the production and purify the protein of interest.
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just compare and contrast diploid and haploid cells
Haploid cells carry only a single set of chromosomes. Diploids contain two sets of chromosomes. Haploid cells are created through the process of meiosis. Diploid cells are formed through mitosis.
What is Haploid?Haploid refers to cells containing a single set of chromosomes. The term haploid may also refer to the number of chromosomes a gamete.In humans, gametes are haploid cells containing 23 chromosomes, each one of a pair of chromosomes present in diploid cells. Organisms that reproduce are diploid (from each parent he has two sets of chromosomes, one). Human cells are considered "diploid" because they inherit two sets of her chromosomes, 23 from her mother and 23 from her father, for a total of 46. The only exceptions are germ cells (egg and sperm), which are known as "haploid" cells because they contain one set of 23 chromosomes.To learn more about Haploid from the given link :
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Ecology is best defined as the study of
A. populations.
B. rate of population changes.
C. communities.
D. organisms as they interact with other organisms and with their physical surroundings.
Ecology is the scientific study of the interactions and relationships between organisms and their physical environment. Thus option D is the correct answer.
It encompasses the study of populations, communities, and ecosystems, as well as the processes that drive changes in these systems over time.
Ecology also examines the impact of human activities on natural systems and seeks to understand the mechanisms that maintain the health and productivity of ecosystems.
This multidisciplinary field draws on concepts and techniques from biology, chemistry, physics, geology, and other sciences to provide a holistic understanding of the natural world and its functioning.
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Which of the following cartilaginous joints is found only in young; growing people? (A) costochondral joint (B) pubic symphysis: (C) intervertebral disc (D) epiphyseal plate.
Epiphyseal plate cartilaginous joints are found only in young; growing people
Children's and adolescents' long bones include a layer of cartilage called the epiphyseal plate, which is also referred to as the growth plate. The longitudinal growth of the bone is caused by this cartilage. Ossification, a process that occurs as a person grows, causes the cartilage to gradually give way to bone tissue, forming an epiphyseal line.
The growth plates vanish and the bones are fully developed after this process is complete, which typically occurs at the conclusion of puberty. Because of this, epiphyseal plate cartilaginous joints are not found in adults; rather, they are only found in children and people who are still growing.
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The chambers of the heart are lined with epithelium called __________.
The heart valves are protected by the endocardium, which also lines the chambers where the blood flows in Epithelium.
It is formed of endothelium, a straightforward squamous epithelium that is continuous with the blood vessel endothelial lining. The endocardium covers the whole interior surface of every heart chamber and is continuous with the blood vessel's inner layer. The lining of the heart's chambers and valves is a thin, smooth tissue called the endocardium. The so inside of the heart's walls, it protects the heart's muscles from the bloodstream and houses vital blood veins.
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