The magnification of the eyepiece and objective lens used to obtain 600X magnification in the virtual microscope is 6.10.
What are microscope lenses?
Compound microscope lenses are called objective lens and ocular lens. The objective lens is a lens that is installed very close to the object being observed. The ocular lens is very close to the observer's eye.
With this information, we can conclude that 600X magnification in the virtual microscope is 6.10.
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Which action is characteristic of the hormone vasopressin?
ADH increases arteriole constriction and tubular permeability to water
Vasopressin, also referred to as antidiuretic hormone (ADH), is a hormone secreted by the posterior pituitary gland. Arteriole constriction and tubular permeability to water are both increased by ADH. Calcitonin and parathyroid hormone levels in the blood regulate calcium equilibrium (PTH). the hormone that aids in blood vessel constriction and aids the kidneys in regulating the body's salt and water balance. This aids in regulating both blood pressure and urine production.
Sensors (baroreceptors) in the heart and big blood vessels can identify a drop in blood volume or low blood pressure that happens after dehydration or a hemorrhage. These encourage the secretion of anti-diuretic hormones.
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Antibiotic resistance is becoming more common in disease-causing bacteria because?
Antibiotic resistance occurs naturally and it is use as medicines as well as misuse of antibiotics in humans ans animals is accelerating the process.
Nowadays infections are growing such as gonorrhea, tuberculosis, pneumonia, etc all are becoming hard to treat or fight with them because of less effective antibiotics.Inappropriate uses of antibiotics spread antibiotic resistance bacteria.
Excessive use of antibiotics or use for wrong reasons can cause bacteria to became resistant and multiply rapidly in human body or environment. When bacteria develop the ability to survive exposure of antibiotics that are design to kill them or stop their growth. Young children, cancer patient and over age people at great risk.
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The earliest evidence of ancestral ____ are found in middle pleistocene deposits in kenya.
Answer: chimpanzees
Explanation:
The earliest evidence of ancestral hominin are found in the middle pleistocene deposits in kenya, Africa. Pleistocene showed to have the earliest occurrence of about 2 million years ago.
What are evidences of ancestry?
Fossils, anatomy, embryos, and DNA sequences provides the line of evidence about the common ancestry of today's organisms. It provides evidence of more closely related organisms having more characteristics in common. DNA sequences underlies the similarities and differences in the fossils, anatomy, and embryos of human population.
The hominin fossil record is found in the Pleistocene is increasingly well documented. One species for which there is substantial new information is Homo erectus which are found in the deposits of Kenya, Africa.
Homo erectus is an extinct species of archaic human race from the middle Pleistocene, with its earliest occurrence about 2 million years ago.
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how do you identify a interphase in mitosis
Answer:
Interphase is generally characterized by not being able to see the individual chromosomes, only the chromatin.
Explanation:
Chromosomes form from chromatin when the cell enters mitosis so that the genetic code can split, so if you see it, it's in mitosis, but if not, it's in interphase.
Which combination of alleles are always involved in the inheritance of a sex-linked trait?
heterozygous alleles
homozygous alleles
alleles that are carried on X and Y chromosomes
alleles that are carried on all chromosomes except the X and Y chromosomes
Sex-linked genes are transmitted with the sex chromosomes. The combination of alleles that are involved in the inheritance of a sex-linked trait are alleles carried on X and Y chromosomes. Option C)
What is a sex-linked gene?
Genes are physically located and arranged in the chromosomes. Each chromosome contains several genes that vary in length and code for different traits. So, all chromosomes are different, except for the homologous ones.
In mammals, sex is determined by a pair of sex chromosomes, X and Y.
Females are represented by the combination of two X chromosomes, XXMales are represented by the combination of an X chromosome with a Y chromosome, XY.When talking about sex-linked genes, we refer to genes located in one of the sex chromosomes. In general, genes are linked to the X chromosome.
Being linked to one of the sex chromosomes means that these genes, and their corresponding alleles, will only be inherited together with the chromosome.
In the case of X-linked genes, a male that inherits the X chromosome from a heterozygous female can express either the dominant or the recessive trait, depending on which allele it got from the mother.
According to this framework, the correct answer is C) alleles that are carried on X and Y chromosomes.
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Answer:
alleles that are carried on X and Y chromosomes
Explanation:
The structural commonality of the biceps brachii and the rectus abdominis is that they are __________.
The structural commonality of the biceps brachii and the rectus abdominis is that they are parallel muscles whose fibers run along through the long axis of the body.
Together with the pyramidalis muscle, the rectus abdominis is a member of the anterior abdominal muscles. However, when considering the functional architecture, these two muscles, together with the three lateral abdominal muscles—the external oblique, internal oblique, and transversus abdominis make up the anterolateral abdominal wall.
The biceps brachii muscle, also known as the "biceps," is a big, thick arm muscle with two heads. The supraglenoid tubercle, located above the glenoid cavity of the scapula, is the location of the long head. It is extra synovial while being in the intracapsular area.
At the humeral head, the long biceps tendon curves sharply before continuing on in the bicipital groove (intertubercular sulcus). Ligaments in the capsular region (also known as the biceps pulley) hold this pivotal point in place.
Short head: Arises at the coracoid process of the scapula, where it partially fuses with the coracobrachialis origin tendon.
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A population's emigration in one month totaled three individuals. During the same period, immigration was 17 individuals. Natality was 12, and mortality was 26 due to a parasite infection. What was the net effect on the population size
There was no net change in the given population. The size of the given population remains unchanged.
The explanation behind this is that if we consider the given values-
Emigration- 3
Immigration- 17
Natality- 12
Mortality-26
Therefore,
The overall effect on the population will be=
(Emigration+ Mortality) - (Immigration + Natality)
= (3+26) - (17 + 12)
=29-29
=0
Here the emigration means the number of people who have migrated from the population. Mortality refers to the number of deaths in a given population. Immigration is the migration of people into the population and natality is the overall number of births that have taken place in a population. Therefore there is no net gain or loss in the given population. This exerts no effect on the population keeping it unchanged.
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Define transpiration.
NOTE: The answer needs to be atleast 3 lines long not less than that
Answer:
Transpiration is a type of evaporation. This type of evaporation only happens with plants. The water leaving the plant is excess water that the plant doesn't need.
Explanation:
Neurotransmitters are located in
Othe
A. synaptic sacs
B. Golgi apparatus
C. cytoplasm
I believe it is the synaptic sacs!
"When a nerve impulse arrives at the presynaptic terminal of one neuron, neurotransmitter-filled vesicles migrate through the cytoplasm and fuse with the presynaptic terminal membrane. The neurotransmitter molecules are then released through the presynaptic membrane and into the synaptic cleft."
Use homeostasis to explain why you might throw up if you eat food that has gone bad.
Food that has gone bad can cause food poisoning in which the body responds to maintain homeostasis through vomiting.
What is homeostasis?Homeostasis is defined as the ability of human beings to maintain a constant internal environment which is meant for their survival.
When an individual consumes spoilt food the body responds by showing the following symptoms such as:
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Why is bone made up of calcium salts and not other salts, for example, iron salts?
Bone made up of calcium salts and not other salts, for example, iron salts because the presence of iron salts would strengthen bone but make it very heavy, requiring much larger muscles to move it. Calcium and collagen work together to make bones strong and flexible. Calcium salts provide rigidity to bones and teeth. Without mineral deposits in the bone, the organic extracellular matrix would be week .
About 99% of the body's calcium is stored in bones, and the remaining 1% is found in blood, muscle, and other tissues.70% of bone is made up of bone mineral called hydroxyapatite. Before the extracellular matrix is calcified, the tissue is called osteoid tissue.
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Cytotoxic t cells are able to recognize infected body cells because _______________________.
Cytotoxic t-cells are able to recognize infected body cells because the infected cells display foreign antigens.
What do cytotoxic killer T cells do?The helper T cell and the cytotoxic T cell are the two main subtypes of T cells. Helper T cells, as their names imply, "assist" other immune system cells, whereas cytotoxic T cells "kill" virally-infected cells and tumors. The TCR cannot directly bind antigen, unlike an antibody.
Killer T cells are also known as "cytotoxic" or "cytolytic" cells because they have unique molecular weapons that allow them to attack and kill other cells that are showing targets they are familiar with, such as a virus-infected cell or even a malignant cell. The processed cancer cell antigen, which is solely presented by MHC-class I, must be recognized by cytotoxic T lymphocytes. Helper T cells binding to a processed antigen on the same dendritic cell as the MHC-class II presenting a processed cancer cell antigen enhances cytotoxic T-cell complete activation.
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A large area undergoes the same amount of metamorphism. All rock reach the same metamorphism grade. However, after the metamorphism some rocks are marble and some rocks are slate. Why?
The only explanation in this situation is that the parent rocks of the marble and slate were different. This indicates that the region once held both shale and limestone before metamorphism.
In reference to rocks, it denotes those that have undergone metamorphism—rocks that may have started as sedimentary, igneous, or another type of metamorphic rock but has since undergone "recrystallization" and taken on an entirely new form—under new temperature and pressure conditions.
For instance, when limestone is heated and compressed, it changes into marble, a more coarsely crystalline and occasionally banded rock.
When shale, a clay-rich, soft rock, is compressed, slate, a tougher rock, is created.
The alterations are frequently even more remarkable, resulting in the formation of new minerals, including garnet, mica, and tourmaline (as seen in schist).
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How are organisms in the domain Archaea different from those in the domain Eukarya?
A. Archaea are multicellular organisms.
B. Archaea have mitochondria inside their cells.
C. Archaea have no membranes around their organelles.
D. Archaea hold genetic information in DNA.
Answer:
C.) Archaea have no membranes around their organelles.
Explanation:
A.) is incorrect because Archaea are unicellular organisms. Eukarya, however, are multicellular.
B.) is incorrect because Archaea do not have mitochondria. Eukarya contain mitochondria.
C.) is correct because, unlike Eukarya, Archaea do not have any membranes around their organelles.
D.) is incorrect because both Eukarya and Archaea keep their genetic information in DNA.
Select the correct answer. betty drew the life cycle of a butterfly for a science exhibition. the life cycle showed the various stages of growth before the egg turns into a butterfly. what type of model did betty use? illustration of a monarch butterfly life cycle. eggs, larva, chrysalis, and adult. a. hypothetical b. conceptual c. mathematical d. physical
Which wave properly varies as the pitch of a sound wave varies A frequently b wavelength C speed D amplitude
Its A frequently
explantation: the higher the frequency wave the higher the pitch of the sound
Identify the true and false statements about gender and labor force participation.
The true and false statements about gender and labor force participation as follows:
True: "A higher percentage of men than women participate in the labor force."True: "Marriage seems to have opposite effects on women’s and men’s participation rates."False: "Occupational sex segregation, or the domination of certain professions by a single gender, has dramatically fallen in recent years."True: "Since 1975, the percent of mothers in the labor force has been on the rise."What is Gender Empowerment Measure?Gender Empowerment Measure (GEM) can be defined as an index that is designed and developed to measure the level of inequalities between opportunities that are available to both men and women living in a country.
Based on information provided by the Gender Empowerment Measure (GEM), we can infer and logically deduce the true and false statements about gender and labor force participation as follows:
True: "A higher percentage of men than women participate in the labor force."True: "Marriage seems to have opposite effects on women’s and men’s participation rates."False: "Occupational sex segregation, or the domination of certain professions by a single gender, has dramatically fallen in recent years."True: "Since 1975, the percent of mothers in the labor force has been on the rise."Read more on Gender Empowerment Measure here: brainly.com/question/22907606
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Complete Question:
Identify the true and false statements about gender and labor force participation.
1. A higher percentage of men than women participate in the labor force.
2. Marriage seems to have opposite effects on women’s and men’s participation rates.
3. Occupational sex segregation, or the domination of certain professions by a single gender, has dramatically fallen in recent years.
4. Since 1975, the percent of mothers in the labor force has been on the rise.
Cellular responses to hormones that initiate second-messenger systems include ________.
Cellular responses to hormones that initiate second-messenger systems include hormone binding to intracellular receptors.
When a cell is exposed to extracellular signaling molecules, or first messengers, second messengers, or intracellular signaling molecules, are released by the cell. Second messengers cause physiological alterations at the cellular level, including depolarization, migration, apoptosis, differentiation, and proliferation.Secondary messenger systems attach hormones to receptors, which sets off a series of events that result in actions. Secondary messengers are chemicals that transmit information from cell surface receptors to targets located in the cytoplasm or nucleus of the cell.learn more about second-messenger here: https://brainly.com/question/13910720
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As a social worker employed in a mental health center, cecilia is most likely to consult the ___, a tool for assessing behavioral disorders.
As a social worker employed in a mental health center, Cecilia is most likely to consult the DSM-IV-TR, a tool for assessing behavioral disorders.
DSM-IV-TR provides diagnostic criterion sets to help guide a clinician toward a correct diagnosis and an additional section devoted to differential diagnosis when persons meet diagnostic criteria for more than one disorder.
The intention of this information is to help the clinician determine which particular mental disorder is present, the identification of which would hopefully indicate the presence of a specific pathology and suggest a specific treatment.
It is evident, however, that DSM-IV-TR routinely fails in this goal, despite the best efforts of the leading clinicians and researchers who have authored the manual.
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List the functions of water in the body. Why is it important to maintain good fluid balance inside and outside of the cells
Answer:
According to scientists , water occupies up to 60 % of the human body .
The importance of water in the human body are ;
Transport Formation of bodily fluids i.e. saliva Digestion Regulates body temperatures Circulation of nutrientsExplanation:
The reason why it is important to maintain good fluid balance within and without he cells is because , It can dissolve various elements to make then easily absorbed into other system .There are many fluids which rely on water for volume e.g. blood which is the main component of the circulatory systems , water also regulates the temperature and heart pressure ,
Through electrolysis , fluid balance in the cells can be achieved and it also helps to generate nerve impulses .
A scientific law is a statement of fact that describes an action or set of actions. Laws are accepted as fact because they are always observed to be true. Examples of scientific laws are Newton's laws of motion. These laws describe the motion of moving objects. a) Give an example of a scientific law you have studied or heard of. b) How do you know that this is a law in scientific terms? Read through the definition of law in the question above.
Answer:
A and B
Explanation:
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What are the three reasons why the cpi is hard to measure accurately?
The three main reasons why the CPI is hard to measure accurately include the following below:
New products to buyNew ways for consumers to buy them.Inflation and taxes.What is CPI?
This is referred to as consumer price index and helps to measure the change in consumer prices from a weighted average market basket of consumer goods and services.It is also used in determining the prices as a result of different factors such as inflation being taken into consideration.
CPI is however difficult to measure accurately as a result of the constant new product formation and the different ways and manner in which the consumers use the product at that point in time.
The aforementioned are therefore the reasons why they were chosen as the most appropriate choice.
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The superior region of the right ventricle narrows before it leads into the ______. Multiple choice question.
Pulmonary trunk
The right ventricle pumps deoxygenated blood into the pulmonary trunk, which leads toward the lungs and bifurcates into the left and right pulmonary arteries.
What is Pulmonary trunk ?The pulmonary trunk is a major vessel of the human heart that originates from the right ventricle. It branches into the right and left pulmonary arteries, which lead to the lungs.
It divides into the left and right pulmonary arteries, which carry blood with relatively low oxygen content and high carbon dioxide content into the lungs.The pulmonary trunk is approximately 50 mm long and 30 mm wide (most authors use 29 mm in males and 27 mm in females (axial width) as the cut-offs of normal 1,5).Learn more about Pulmonary trunk here:
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Describe the structure of a neuron. Include the cell body, dendrites, and axon in your description. How does the structure of a neuron help it carry out its function efficiently?
Answer: A neuron has three main parts: dendrites, an axon, and a cell body or soma , which can be represented as the branches, roots and trunk of a tree, respectively. A dendrite (tree branch) is where a neuron receives input from other cells. Dendrites branch as they move towards their tips, just like tree branches do, and they even have leaf-like structures on them called spines.
The axon (tree roots) is the output structure of the neuron; when a neuron wants to talk to another neuron, it sends an electrical message called an action potential throughout the entire axon.
The features of neurons help them to carry out their function efficiently:
they have a long fibre (axon) so they can carry messages up and down the body over long distances
in a stimulated neuron, an electrical nerve impulse passes along the axon
the axon is insulated by a fatty (myelin) sheath - the fatty sheath increases the speed of the nerve impulses along the neuron
at each end of the neuron are tiny branches (dendrons), which branch even further into dendrites - the dendrites receive incoming nerve impulses from other neurons
Explanation:
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When placed in a hypotonic solution, water moves into the cell through an aquaporin channel. this is an example of?
Water can move into the cell through simple diffusion and through osmosis when the concentration of water outside the cell is lower than inside through aquaporins.
Aquaporins, also known as water channels, are channel proteins that produce pores in the membrane of living cells, primarily aiding the passage of water between cells and known as plumbing systems of the cell. They are part of a wider family of important intrinsic proteins. Aquaporins are proteins that allow water to enter and exit cells more quickly than through the phospholipid bilayer in a range of bacteria, fungal, animal, and plant cell membranes.
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I WILL MARK U BRAINLIEST IF YOU ANSWER THIS QUESTION!
5. Describe how the frog's circulatory and digestive systems are physically connected.
Answer:
The circulatory system transports blood throughout the body through the veins. The circulatory system works with the respiratory system because it transports oxygen through the body as well. It works with the digestive system because it transports waste so it can be disposed.
Explanation:
joe
Answer:
I think one way its connected is through the liver? cause what the frog eats (digestive system) goes through the liver at some point to process, break down and create nutrients. And the liver is also connected to the circulatory system because it processes blood?
Explanation:
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Biosemiotics and Evolution pp 45-64|Cite as Life Sciences and the Natural History of Signs: Can the Origin ofLife Processes Coincide with the Emergence of Semiosis
Yes, Origin ofLife Processes Coincide with the Emergence of Semiosis.
Life is defined as the characteristic that separates functional creatures from corpses. This difference is mostly based on traits displayed by biological systems throughout evolution. On this basis, it appears that being alive is dependent on the system's ability to remain invariant under the constraint of maintaining mutually dependent magnitudes such as shape, function, energy, and information through the organization of an internal hierarchy dynamically connected with the environment. The scientific explanation for this intricate connection lowers the living hierarchy to the sum of all constituent parts represented in isolation.
As a result, the ensuing functional teleonomies may be explained by the diachronic character of the underlying processes without having to account for the genesis of their emerging links. In this work, I will propose that the role of signals in the formation of novel forms and functions might be regarded as essential in channeling natural selection toward the establishment of certain evolutionary tendencies, rather than simply described.
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Choose from three types of scientific workers (for example, biologists, chemists, and geographers) that you think could help solve the problems associated with this species, and explain how they could apply their knowledge.
The issues related to species could be resolved with the help of biologists.
Chemists, geographers, and biologists are the three categories of scientific workers.Chemists are people who study chemistry and do research on chemical compounds. Since they are primarily concerned with chemical reactions, they are unable to address the issue of species.Since geographers are primarily physical scientists who also study geography and the distribution of land, features, and people on earth, they are unable to address the issue of species.A biologist is someone who studies biology, which is primarily based on humans. They research all types of living things and life in general in order to be able to address issues with species.Laboratory studies with animals, plants, microbes, or biomolecules are frequently carried out by biologists. A tiny portion of biological research does, however, take place outside of the lab and may entail natural observation as opposed to experimental.learn more about biologist here: https://brainly.com/question/17274244
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What is the name of the process that plants use to remove carbon dioxide from the atomsphere
Answer:
photosynthesis
Explanation:
2. Which characteristic do most cartilaginous fish have?
1 ; swim bladder
2:spiracles
3:external fertilization
Answer:
Option 2: Spiracles.
Explanation:
Cartilaginous fish (also called Chrondricytes) have a skeleton of cartilage, instead of bone. There are two subclasses - Elasmobranchii and Holocephali. Sharks, rays, skates and sawfish are elasmobranchs while chimeras are holocephali.
Here’s a list of features of cartilaginous fish in comparison to bony fish:
1. Cartilage skeleton: unlike bony fish that have a skeleton made of bones (just like other terrestrial vertebrates), the skeleton of cartilaginous fish is made of cartilage.
2. Spiracles: this is a modified gill of sorts, it aids with respiration and is found slightly behind each eye. It leads directly to the mouth. Most cartilaginous fish possess this organ (exceptions are present, such as hammerhead sharks). Bony fish do not possess spiracles.
3. Ampullae of Lorenzini: absent in bony fish, these organs are electroreceptors that form a network of pores filled with a form of jelly that can transmit electrical signals. It allows the cartilaginous fish to sense electric fields in the water (such as the movements of a fish struggling), magnetic fields and temperature. Some bony fish such as sturgeon and lungfish may possess these organs, however research is still ongoing.
4. Claspers: male cartilaginous fish possess an organ known as claspers at their pelvic fin. This is used during reproduction to transfer the sperm into the female for fertilisation. As such, internal fertilisation occurs in cartilagonous fish. Bony fish do not possess this organ, and external fertilisation occurs.
There are many other characteristics that differentiate cartilaginous fish from bony fish. They're an extremely fascinating group of animals that unfortunately, is decreasing in numbers. Very little is known about many of these animals, so it is important that we do our best to conserve the sharks, rays, sawfish and chimeras before we lose them forever.