Which statement is best supported by the data in the graph? A graph entitled Number of people living with H I V, number of people newly infected with H I V and number of AIDS deaths worldwide from 1990 to 2008 in millions is shown. Year is on the horizontal axis and number of people is on the vertical axis. The number of people living with H I V steadily increases over the years. The number of people newly infected increased from 1990 to 1996 and then began to decrease. The number of deaths due to AIDS increased from 1990 to 2002, and then began to level off and decrease. Since 2000, there has been an increase in the number of people living with HIV, but a decrease in the number of people newly infected with HIV. Since 1990, both the number of new HIV infections and the number of deaths due to AIDS has consistently increased. The life span of a person living with HIV has become shorter. Twice as many people were living with HIV in 2008 than in 2000.
Answers
Answer: A. Since 2000, there has been an increase in the number of people living with HIV, but a decrease in the number of people newly infected with HIV.
Explanation:
The statement "Since 2000, there has been an increase in the number of people living with HIV, but a decrease in the number of people newly infected with HIV" best supported by the data in the graph. Hence, option A is correct.
What is HIV?The virus known as HIV (human immunodeficiency virus) targets the immune system of the body. HIV can cause AIDS (acquired immunodeficiency syndrome) if it is not treated. Right now, there is no efficient treatment.
Nevertheless, since 1996, there have been fewer new infections. For this reason, we can assume that if we look at the year 2000, we will observe that there was a rise in the number of HIV-positive persons but a decline in the number of HIV-positive people.
Therefore, since 2000, there has been an increase in the number of people living with HIV, but a decrease in the number of people newly infected with HIV.
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The given question is incomplete, so the most probable image of the question is attached below.
Related Questions
How did Dinosaurs diminished from earth?
Answers
Answer:
Hey there
It is believed that the dinoursars diminished from earth through a massive meteorite which weight 2 trillion tons which hit the earth causing maximum heat and it killed all the dinoursars
Explanation:
Have a nice day
A pharmaceutical company is working on a drug to slow the spread of Ebola. Which of the following should be the company's focus?
a. Sanitizing the drinking water
b. Protecting the food supply
c. Person-to-person contact
d. Killing the insect vector
Answers
Answer:
C
Explanation:
Although Ebola isn't transferred by the air and through touch. Bodily fluids like sweat, saliva, urine, breastmilk, semen, and vomit all transmit the disease, if a person gets it in a cut or is directly introduced by it (sexual intercourse.)
Which of the following techniques involves hybridizing a cDNA sample to a chip containing thousands of single-stranded DNA sequences, allowing one to study the expression of thousands of genes simultaneously?
A) PCR
B) Southern blot
C) FISH
D) Agarose gel electrophoresis
E) DNA microarray
Answers
Answer: Option E.
DNA micro array.
Explanation:
DNA microarray is a technique that involves hybridizing cDNA into a chip that contains thousands of single stranded DNA sequences. This technique enables one to study expression of thousands of genes at the same time.looks for extra (duplicated) or missing (deleted) chromosomal segments, sometimes called copy number variants (CNVs).
DNA microarrays are microscope slides which are printed with thousands of tiny spots in specific different positions, and each of the spots contain a known DNA sequence or gene.
primary use of DNA microarrays is transcriptional profiling.
The basic principle behind the DNA microarray is “ nucleic acid hybridization.
what is the importance of autotrophic organisms for other organisms?
Answers
Answer:
the importance of autotrophic organisms with respect to energy flow and nutrient cycling in ecosystems. Primary producers usel solar or chemical energy to manufacture their own food and they use this energy through cellular respiration and growth and reproduction--energy used for NPP.
(5 points)
The organ responsible for filtering up to 95% of th
maintaining body pH is the
pancreas.
urethra.
kidney.
A pancreas
B urethra
C kidney
D gall bladder
Answers
Answer:
C. Kidney
Explanation:
The kidney is a vital organ in the human body. It is bean shaped and helps in the filtration of toxic substances and wastes from the body fluids which is then reabsorbed into the bloodstream.
The kidney also controls the level of water, pH and sodium levels. It however controls the blood pH by excretion of hydrogen ions and forming bicarbonate which ensures the blood pH is within its optimal and normal range.
Answer:
kidneys
Explanation:
The kidneys are the body's filtration system, and are responsible for filtering out the fluids in the body. The biproduct of this is called urine and is removed from the body
Why are the polychaete worms living near the underwater volcanic vent called Pompeii worms?
Answers
The polychaete worms living near the underwater volcanic vent are called Pompeii worms because they look like the ancient Roman city of Pompeii and because they are the most heat-tolerant animals on Earth.
What is the significance of polycheata?Polychaetes are found in many parts of the world and play many important roles in the environment, such as their importance in marine and freshwater ecosystems. They also have a rich fossil record, which helps scientists study evolution, polychaetes are commonly used as model organisms in biological research, and polychaetes are studied to clean up contaminated environments through bioremediation.
Hence, the polychaete worms living near the underwater volcanic vent are called Pompeii worms because they look like the ancient Roman city of Pompeii and because they are the most heat-tolerant animals on Earth.
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The uterine cycle describes the cyclic changes of thickening and degeneration that the endometrium goes through in a month. What is the order of events in one uterine cycle
Answers
Answer:
During the uterine month there are different phases through which the uterus passes, these phases are regulated by hormones and are responsible for producing the cycle necessary for fertilization.
Phase where menstruation occurs: This phase only happens if the woman was not fertilized and did not develop the diploid cell together with a sperm, since not being fertilized, all the uterine preparation that had been planned in the body for fertilization will be released as that we know "menstruation", in this phase estrogens and progesterone are low. The inner walls of the unfertilized uterus are released.
Follicular phase, in the follicular phase the ovaries prepare to release an egg and estrogen begins to rise. (From the first day of the period until ovulation)
Proliferative phase, in the proliferative phase, new vessels proliferate and the outermost layer of the uterus prepares itself for possible fertilization, is where spiral arterioles can begin to form again in the external cut of the myometrium.
Ovulation, here is where the mature ovum is called Graff's follicle, at this time estrogen reaches its peak and then descends.
Luteal phase, in the luteal phase the production of the luteal body is generated, at this stage progesterone takes center stage, and it is the range between ovulation and menstruation (if not fertilized)
Last phase, secret phase, in this phase there are two possible ends, if the woman is fertilized, the egg cell implants and begins the development of the embryo and if it is not fertilized, the entire external cut of the myometrium is prepared to be secreted.
Explanation:
A very important fact to clarify is that women are born with a quantity of ovules that at the end of this uterine cycle ceases to exist, this process is what we know as menopause.
That is to say that women have a quantity of ovules that will one day run out, and the body releases them from the menarche or the first menstruation, generating that in each released ovule a uterine cycle is completed, the day they end the woman will have reached menopause and would have no chance of being fertilized or completing the uterine cycle.
superficial layer of the endometrium is shed
basal layer of endometrium grows, forms gland and blood vessels
enriched endometrial blood supply
endometrial glands secrete nutrients into uterus
Which type of organism developed first?
Answers
al
answer: algae
explanation: because the were the first ones to adapt with water and land...
Explain why chemogenetic based methods of regulating cellular signaling result in poor temporal control of biochemical pathways relative to optogenetic based methods.
Answers
Answer:
They use different detecting methods to assess neuronal circuits
Explanation:
Chemogenetics is a technique widely used in neuroscience research to explore signaling interactions by means of genetically modified receptors capable of interacting with small molecules. Chemogenetics was first used to determine the function of the chalcone isomerase gene by inducing mutations that altered its substrate specificity. On the other hand, optogenetics is a bioluminescence-driven genetic technique used to control genetically modified neurons that express light-gated ion channel genes. This technique is also used to monitor neuronal networks. In consequence, optogenetic and chemogenetic techniques have recently been combined in order to analyze neuronal circuits, it by analyzing the same actuator molecule.
a strand of dna contains the base sequence AGTT . What is the sequence of the complimentary strand of DNA
Answers
Answer:
The sequence is TCAA
Explanation:
Deoxyribonucleic acid (DNA) is a molecule composed of two complementary chains of nucleotides. The nucleotides are in turn composed of one nitrogenous base, one deoxyribose sugar, and one phosphate group. The four different types of nitrogen bases found in DNA are thymine (substituted by Uracil during RNA transcription), adenine, cytosine and guanine. These bases bind by complementary base pairing to form an antiparallel double-strand. The complementary base pairing rule states that thymine forms two hydrogen bonds with adenine, while cytosine forms three hydrogen bonds with guanine.
Answer:
TCAA
Explanation:
A matches to T and G matches to C.
Please help me come up with an answer for this question thankyou so much! Compare and contrast the processes of cellular respiration and photosynthesis. Think of as many similarities and differences as you can (things to consider: inputs and outputs, the role of energy, the types of organisms that do each process, the location within cells)
Answers
Explanation:
The end result is glucose, with oxygen being the waste product. The two processes are similar in that they both produce energy, albeit in two different forms. They are different in that photosynthesis assembles the glucose molecule, while cellular respiration takes it apart.
Through which vascular tissue do water and nutrients get transported to reach the leaves during transpiration? cuticle parenchyma xylem phloem
Answers
Answer:
Xylem is one of the two types of transport tissue in vascular plants, phloem being the other. The basic function of xylem is to transport water from roots to stems and leaves, but it also transports nutrients.
Explanation:
follow me plzzz
Answer:
C. xylemExplanation:
i tack test
Explain the mechanism responsible for summation of contractions and the increase in height of contraction when the stimulus frequency is increased.
Answers
Answer:
The higher the stimulation frequency, the contractions will be more continuous and even additive.
Continuous stimuli reactivate muscle contraction once the action potential cycle is complete.
Explanation:
Muscle contractions can be continuous or cumulative once the action potential curve drops, since the action potential at the top of the mountain is in a refractory period.
I knit a graph of what cumulative contractions are like due to continuous stimulation.
In the graph I leave you pointed out some references:
mr = refractory moment
mnr = non-refractory moment (where the new stimulation is accepted and a more powerful cumulative muscle contraction is generated)
PA = potential for muscle action or contraction itself.
whats 20x20? thank you
Answers
Answer:
400 yayyyyyy
Explanation:
yvhjghkkkkhhh
Answer:400
Explanation:
20
x20
_____
00
+400
--------
400
Below are two chemical equations. One is for cellular respiration and one is for photosynthesis. Correctly place the reactants and products in the right location to complete both equations.
Photosynthesis: H20 +H20------------->C6H12O6 +O2
+solar energy CO2
Cellular Respiration:O2+C6H1206 -------->CO2 + H2O
+02
Answers
Answer:
Photosynthesis: 6CO₂ + 6H₂O + solar energy ----> C₆H₁₂O₆ + 6O₂
Cellular Respiration: C₆H₁₂O₆ + 6O₂ ----> 6CO₂ + 6H₂O + ATP
Hope that helps.
The correct equation for cellular respiration and one for photosynthesis are:
Photosynthesis: 6CO₂ + 6H₂O + solar energy ----> C₆H₁₂O₆ + 6O₂
Cellular Respiration: C₆H₁₂O₆ + 6O₂ ----> 6CO₂ + 6H₂O + ATP
What is cellular respiration?Cellular respiration is a process of converting food into energy that can be used in many processes. It happens when oxygen is combined with food material and releases carbon dioxide as a waste product.
The correct reaction of photosynthesis is when carbon dioxide and water are combined with sunlight to form glucose and oxygen.
The correct reaction of cellular respiration is when glucose and oxygen react and release carbon dioxide and water and energy,
Thus, the correct reactions are:
Photosynthesis: 6CO₂ + 6H₂O + solar energy ----> C₆H₁₂O₆ + 6O₂
Cellular Respiration: C₆H₁₂O₆ + 6O₂ ----> 6CO₂ + 6H₂O + ATP
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Classify each nutrient as a macronutrient or as a micronutrient
Answers
Answer:
Macro: Phosphorous, Protein, Fat, Carbohydrates
Micro: Vitamin A, Sodium
Explanation:
Macronutrients are nutrients that are needed in large amounts. Micronutrients are needed in smaller amounts.
Human activities, including the use of fossil fuels, have contributed to global
warming and the rise in sea levels. Both of these environmental changes are
threatening ecosystems and human communities worldwide. How could
scientists best cooperate to use scientific research to mitigate this problem?
A. They could look at trends in climate change to predict regions of
concern.
B. They could set regulations in their own countries to protect local
resources.
C. They could make personal choices that help reduce their carbon
footprints.
D. They could study climate change on other planets to predict its
effects on Earth.
Answers
Answer:
1 C when carbon footprint are reduced
It will reduce the rate of global warming
They could make personal choices that help reduce their carbon
footprints.
A carbon footprint is the total amount of greenhouse gases including carbon dioxide and methane that are generated by actions.What is carbon footprint?Carbon footprint, amount of carbon dioxide emissions associated with all the activities of a person or other entity like building. It includes- Direct emissions, such as those that result from fossil-fuel.
- Heating and transportation.
- Emissions required to produce the electricity.
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21. Evidence in support of the importance of endosymbiosis in the evolution of
eukaryotic cells is:
a, Organelles that have their own unique unique DNA and ribosomes
Organelles that have a double membrane
6. Organelles are in the same size range as free living prokaryotes
d. All of the above
Answers
Answer:
d. All of the above
Explanation:
The theory of endosymbiosis is important as it explains the evolution of eukaryotic cells from prokaryotic cells.
This theory also explains the origin of chloroplast and mitochondria. Several evidences in support of the importance of endosymbiosis in the evolution of eukaryotic cells are as following:
Organelles have their own separate DNA and ribososme.Organelles that have a double membrane (inner and outer).Organelles are in the same size range as free-living prokaryotes.Chloroplast and mitochondria are the examples of such organelles.
Hence, the correct answer is "d".
Knowing the epidemiology and causative agent of Legionaries disease what questions would you ask of the victims or of their surviving relatives?
Answers
Answer:
Answered below
Explanation:
Legionnaires disease is a type of lung inflammatory disease or pneumonia, which is caused by infection from the bacteria Legionella bacterium.
Legionella bacterium can be spread by inhalation from water or soil. People with weakened immune systems are most susceptible as are smokers. Untreated legionnaires disease can progress to a fatality.
Some of the questions to ask of a victim or of surviving relatives include;
1) Any visits to swimming pools?
2) Source of drinking water?
3)Any visits to fountains?
4) Contacts with victims and their personal belongings?
5)Is any relative or victim immunocompromised? Do they have diseases that might lower their immune response?
6) Are they smokers?
Which of the following could be discovered by studying the gross anatomy of a cadaver?
The function of cells within the body
The types of cells within each organ
The function of the body's organs and systems
The structure of the body's organs and systems
Answers
Answer:
The structure of the body's organs and systems
Explanation:
In medicine, a cadaver is a dead human body dissected in order to study its anatomical structure. It is employed by medical students and other medical practitioners to study the structure of the human body.
Anatomy is a branch of science that has to do with the study of the structure of living organisms. Relating anatomy to cadaver, these dead bodies are dissected in order to view and study the structure of the different compartments of the body e.g organs, systems etc.
Why were the advent of metagenomics, and the application of molecular techniques such as single-cell and next-generation sequencing, important for defining a microbial relationship
Answers
Answer:
Based on novel approaches, it has been seen that symbiotic associations prevails between a host and one to thousands of more microbes, which challenges the previous meaning of symbiotic association as one that takes place between the host and a single microbe. It was considered previously that symbiotic association’s takes place only between the pair of single microbe and host.
However, newer approaches has revealed that such kind of association can take place between one microbe and many other hosts. A symbiotic association can take place between microbe-microbe, plants-plants, microbe-plants, and others. However, symbiotic association has never been found to take place between a bacteria and animal host. The symbiotic associations are always not parasitic.
Which of these lymphoid organs destroys bacteria before it can breach the intestinal wall and generates "memory" lymphocytes for long-term memory?
Answers
Answer:
Peyers patches
Explanation:
Peyers patches are group of lymphoid follicles found in the ileum of the small intestine.
This part of lymphatic system form part of immune system that help to control bacteria population in the small intestine and prevent the growth of pathogenic bacteria in the small intestines. It plays an important role in immune surveillance where it recognises pathogenic bacteria and destroy the bacteria.
It is a lymphoid organs destroys bacteria before it can breach the intestinal wall and generates "memory" lymphocytes for long-term memory because it form the part of the immune system which help to fight infection or foreign substances in the body, also by generating lymphocytes which is a white blood cells of the immune system which generate long term memory of foreign pathogens and destroying it.
Angiosperms (flowering plants) and vertebrates obtain nutrients from their environment in different ways. a. Discuss the type of nutrition and the nutritional requirements of angiosperms and vertebrates. b. Describe 2 structural adaptations in angiosperms for obtaining nutrients from the environment. Relate structure to function. c. Interdependence in nature is evident in symbiosis. Explain two symbiotic relationships that aid in nutrient uptake, using examples from angiosperms and/or vertebrates. (Both examples may be angiosperms, both may be vertebrates, or one may be from each group.)
Answers
Answer:
a. Angiosperm are plants (autotrophs) that use photosynthesis to produce their own food, while vertebrates are animals (heterotrophs) that obtain their food from other organisms. Vertebrates include fish, amphibians, reptiles, mammals and birds.
b. Adaptations in angiosperms include two reproductive structures 1- fruits (ovaries), whose main function is to disperse the seeds and 2- flowers that ensure pollination and protect the embryo sac during its formation.
c . Examples:
1- The mycorrhizal symbiosis between plant roots and symbiotic fungi plays a key role in nutrient uptake from the soil. Arbuscular mycorrhizal is a type of symbiosis where a fungus of the phylum Glomeromycota penetrates the cortical root cells of vascular plants to produce specialized structures named arbuscules.
2- Microflora in the vertebrate digestive tract. The microorganisms that live in the digestive tract of vertebrate species are beneficial for the absorption of nutrients. For example, in humans, Saccharomyces boulardii has shown to have a probiotic effect by increasing intestinal homeostasis, thereby enhancing nutrient uptake.
Fill in the blanks.
1. The phylum contains most common animals you are familiar with su
as eagles, dogs, foxes, and frogs.
2. While the earth is home to many members of this phylum, earthworms are
a member of
3. The most successful phylum on earth is which contains insects,
spiders, and crustaceans.
4. An animal that molts it exoskeleton is called a(n).
5. are cells that have the potential to become any type of cell; they hav
not yet received their genetic programming.
6. All members of the animal kingdom are multicellular, heterotrophic and
7. A starfish is a bilaterian deuterostome with symmetrical adults.
8. Complete the chart by describing what kinds of organs or tissues each type
germ layer becomes:
Moi
Answers
Answer:
1. chordata
2. nematoda
3. arthropoda
4. ecdysozoan
5. stem Cells
6. eukaryotic
7. radically
Chart answer:
Endoderm = Lungs, liver, pancreas, lining of gut organs
Mesoderm = Bone, muscle, heart, circulatory system
Ectoderm - Brain, nervous system, skin
Explanation:
Answer:
1. chordata
2. nematoda
3. arthropoda
4. ecdysozoan
5. stem Cells
6. eukaryotic
7. radially
8. Endoderm… Mesoderm becomes… Ectoderm becomes…
Lungs, liver, pancreas, lining of gut organs
Bone, muscle, heart, circulatory system
Brain, nervous system, skin
Explanation:
How many more phases occur during meiosis than during mitosis?
none
two
four
six
Answers
Answer:
there are 4 more phases that occur during meiosis than mitosis
Answer:
The answer is.....
Explanation:
C. Four
why the swimmer push the water backward
Answers
Answer:
[tex]\boxed{\mathrm{view \: explanation}}[/tex]
Explanation:
Swimmers push water backwards to propel forwards. In other words, swimmers push their hands and legs against water to move forward. This is stated in the third law of motion, for every action, there is an equal and opposite reaction.
14. Which of the following may produce more than one functional protein
from an mRNA transcript?
a. chromatin condensation c. epigenetics
h transcrintional regulation d. alternative mRNA processing
Answers
Answer:
D. Alternative mRNA processing.
Explanation:
How do plants get the nitrogen they need?
A.
From bacteria living in their roots
B.
From the air
C.
Directly from the soil
D.
Through photosynthesis
Answers
2. If a nucleus has 8 chromosomes, how many chromosomes will be present after Telophase I? 3. What advantage does crossing-over have in reproduction? 6. Compare and contrast spermatogenesis and oogenesis (where do they occur, how many gametes are formed, when do they develop, etc):
Answers
Answer:
Telophase I: 8 chromosomes composed of two sister chromatids
Crossing over refers to the mechanism of recombination, this process being characterized in that increases the genetic variation
Spermatogenesis refers to the mechanism of formation of male gametes (sperms), while oogenesis is the process of formation of female gametes (oocytes)
Explanation:
Telophase I is the final step in meiosis I. During telophase I, the nuclear membrane is formed around the decondensed set of chromosomes and the nucleoli reappear.
Spermatogenesis refers to the process by which haploid male germ cells (sperms) are generated within the seminiferous tubules in the testis, while oogenesis refers to the process of differentiation of the female egg cells (ova or oocytes) in the ovaries. Spermatogenesis is known to produce small and motile spermatic cells, while oogenesis is known to produce bigger non-motile oocytes.
Hemoglobin is the blood protein responsible for the transport of oxygen. Carbon monoxide disturbs oxygen transport by
Answers
Answer:
Answered below
Explanation:
Hemoglobin is found in the red blood cells and is responsible for the transportation of oxygen from the lungs to the various body cells.
Oxygen binds to hemoglobin because it has a high affinity for it. This aids its transportation. When it gets to the cells it unbinds and get transported into the cell for use in energy production.
Carbon monoxide is an odourless, dangerous gas which has more affinity for hemoglobin than oxygen. Therefore when carbon monoxide is inhaled, it quickly binds to hemoglobin, thereby displacing oxygen. It binds to hemoglobin for a longer period and due to this, the body does not get any oxygen and cells begin to die.
Symptoms of carbon monoxide poisoning include dizziness, headaches, fatigue and coma.