CDC recommends that everyone between the ages of 13 and 64 should get tested for HIV at least once as part of routine health care. People should get tested more often when they have had more than one sex partner or are having sex with someone whose sexual history they don't know.
What is immunodeficiency virus ?The virus known as HIV (human immunodeficiency virus) targets the immune system of the body. AIDS can develop from HIV if it is not treated (acquired immunodeficiency syndrome). There isn't a cure that works right now. People who contract HIV are permanently infected. But HIV can be managed with the right medical attention.
White blood cells termed CD4 cells are where HIV is found. HIV enters the CD4 cell and multiplies there. After HIV destroys the CD4 cell, fresh HIV copies seek out additional CD4 cells to enter and re-start the cycle. HIV destroys immune system cells that the body needs to fight off illnesses and infections.Learn more about HIV here:
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A rain shadow is where a single rainy cloud blots out the sun in an otherwise sunny day, making a rainbow. True or false
The rain shadow is the dry slope of a mountain that is protected from predominant winds and rains. Usually, it is characterized by desertic conditions. The statement is false.
What is the rain shadow?A rain shadow is a meteorological event that occurs when dense clouds, driven by predominant winds, meet one side of a mountain. Rain occurs on this side, while the other side of the mountains remains dry.
The rain shadow is the dry slope of the mountain, which is protected from predominant winds in mountain chains. When referring to predominant winds, we mean the direction of winds that occurs more often in the affected region.
Usually, rain shadows are associated with desertic regions, because only dry winds reach these areas. Poor vegetation inhabits there.
According to this framework, the statmente is FALSE.
A rain shadow is NOT where a single rainy cloud blots out the sun in an otherwise sunny day, making a rainbow.
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moving from the element with atomic number 10 to atomic number 11 on the periodic table there is a change in reactivity, which of the following are true?
select all that apply .
Reactivity increases
Reactivity decreases
Neon has another shell
Sodium has another shell
Valence electrons in sodium are farther from the nucleus
Atomic number 11 does not have a full electron shell
The following option are true:
Reactivity increasesSodium has more shellValence electrons in sodium are further from the nucleusAtomic number 11 does not have a full electron shellWhat is an atomic number?The number of protons in an atom's nucleus or the number of electrons in an electrically neutral atom is the atomic number of that atom. An atom of sodium, for instance, has 11 protons and 11 electrons. Therefore, the atomic number of the Na atom is equal to the sum of its protons and electrons, or 11.
Why is atomic number more important?The electron count in an element is indicated by the atomic number. The majority of an element's chemical properties are determined by the electrons in their valency shell, which is their outermost electron shell. As a result, a chemist places greater value on an element's atomic number than on its relative atomic mass.
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What creates a sense not only of enclosure and connection, but also movement and direction?.
Answer:
Implied line creates a sense not only of enclosure and connection, but also movement and direction.
Explanation:
Texture is a term used to describe the physical characteristics of a surface or even the visual expression of those characteristics (implied). Art includes texture as a component. The level of a surface, how something feels, or how it appears to feel, spiky, sticky, rough, scratchy, etc, creates interest connected with senses of sight and contact. A point moves across space along a line. Lines could be two-dimensional and implied as well as it differs in width, height, direction, colour, and degree of bend. Art includes the use of line, a smudge left by a moving object, has a longer than wider dimension, guides the eye in any direction, including horizontal, perpendicular, diagonal, curved, and zigzag. It may be actual, apparent lines, boundaries, or form edges.
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Which organisms are affected most by biological magnification? A plants B algae C mice D wolves
Answer:D
Explanation:
How much of the fluid that comprises filtrate is reabsorbed into the bloodstream?
99 percent of the fluid that comprises filtrate is reabsorbed into the bloodstream.
This filtrate contains anything that is small enough to pass through the capillaries' pores and escape. Bowman's capsule absorbs the filtrate and passes it back into the renal tubule. Many of these compounds that the body actually wishes to maintain are predominantly recovered by the proximal convoluted tubule, which is the initial portion of the renal tubule.
In actuality, around 99% of the substances that are filtered out of the glomerulus are actually reclaimed by the nephron and placed back into the blood stream. These compounds include glucose, amino acids, and ions.
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The synapse is the space between two neurons where the ______ of a sending neuron uses chemical messages to communicate with the dendrites of a receiving neuron.
The synapse is the space between two neurons where the axon of a sending neuron uses chemical messages to communicate with the dendrites of a receiving neuron.
What is the axon?The axon is a prolongation of a nerve cell (ie, a neuron) whose objective is to send information between these cells through transmitting electrical stimuli to different parts of the human body.
In conclusion, the synapse is the space between two neurons where the axon of a sending neuron uses chemical messages to communicate with the dendrites of a receiving neuron.
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In an individual that is heterozygous for a particular trait, expression of the recessive allele is masked. True or false?.
What does a messenger molecule bind with to cause some effect on the target cell?
Messenger molecule bind with specific target proteins, to cause some effect on the target cell.
Target proteins are useful biomolecules that biologically active substances interact with and regulate. They are utilized during the transduction, transformation, and conjugation processes. An developing therapeutic approach known as targeted protein degradation (TPD) has the potential to address disease-causing proteins that have hitherto been very difficult to target with traditional small molecules. Proteases, kinases, G protein-coupled receptors (GPCRs), and nuclear hormone receptors are currently the protein targets for which effective medicines have been produced.Typically bioactive small compounds are coupled onto solid supports and then used to separate target proteins from the entire proteome for target protein identification. High binding affinity between bioactive small molecules and their intended protein targets is necessary for this method.learn more about specific target proteins here: https://brainly.com/question/27300629
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The endocrine system is responsible for hormone synthesis and secretion in animals. What types of organelles would you expect to find in great number in endocrine cells?.
Answer:
Organelles of the endomembrane system
Explanation:
Does density change with size?
Answer:
No
Explanation:
the size or amount of a material/substance does not affect its density.
Which of the following phrases correctly describes exponential growth?
A: Growth whose rate decreases as the population reaches carrying capacity.
B: Growth whose rate becomes ever more rapid in proportion to the growing total number or size.
C: Growth that starts increasing but then rapidly decreases
Which one is the correct answer
The answer happens to be B.
Ash from ancient volcanoes blanketed the serengeti plain millions of years ago, helping to preserve in place what kind of record related to human evolution?.
The Laetoli footprints were formed and preserved by a combination of events which are volcanic eruption, a rainstorm, and another ashfall .
The Laetoli footprints were most likely formed by Australopithecus afarensis, an early humans whose fossils were found in the same sediment layer. The entire footprint trail is almost 27 m long and includes impressions of about 70 early human footprints.
The Laetoli Footprints provided convincing evidence of bipedalism in Pliocene hominids based on analysis of these impressions. The footprints and skeletal structure excavated at Laetoli showed clear evidence that bipedalism preceded with enlarged brains in hominids.
fossils were formed 3.6 million years ago in Laetoli, Tanzania, where three early humans walked through wet volcanic ash and When the nearby volcano erupted again, subsequent layers of ash covered and preserved the oldest known footprints of early humans.
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Glycosuria would occur if the ________ of the renal glucose transport protein is exceeded.
Glycosuria would occur if the Transport maximum and saturation level of the renal glucose transport protein is exceeded.
The presence of reducing sugars in the urine, such as glucose, galactose, lactose, fructose, etc., is known as glycosuria. The most common kind of glycosuria, glucosesuria denotes the presence of glucose in the urine and is the subject of this review.When someone has glycosuria, their urine includes more sugar, or glucose, than is normal. Usually, renal damage or excessive blood sugar levels are to blame. One typical sign of both type 1 and type 2 diabetes is glycosuria. Renal glycosuria happens when the kidneys of a person are harmed. The glomeruli remove 180 grams of glucose every day from plasma, and all of it is reabsorbed by means of glucose transporter proteins found in cell membranes.learn more about here: https://brainly.com/question/7727285
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1
A.
B.
C.
Prokaryotic cells and eukaryotic cells are alike in
that they
have nuclei that are larger than their
mitochondria.
contain DNA that is coiled around histones.
have irregular, asymmetrical shapes.
D. contain many types of proteins.
4 As
is
m
F
Answer:
contain many types of protein F
what problem might you encounter if you tried to show energy flow through an ecosystem using a pyramid of numbers
Answer:
the pyramid of numbers only compares the number of organisms present in each trophic level at A PARTICULAR TIME. This pyramid can be inverted if organisms of one trophic lvl is parasitic on organisms of another trophic lvl. or when there are many small organisms feeding of one trophic level feeding on a large organism of another trophic lvl.
For eg. tree→ aphid →protozoa, the pyramid of numbers is upside down
however pyramid of energy is always in a pyramid shaped as it compares the total energy in each trophic level OVER A PERIOD OF TIME. more energy is lost when we move along a food chain hence the shape is ALWAYS pyramid.
what are 10 important facts about plant cells
Answer: 1. Plants cannot make their food without plant cells and their features.
2. Chlorophyll this the part of the plant cell that can trap that energy.
3. Plant cell plays an important role in plant adaption.
4. Plant cells and animal cells are almost similar in terms of structure.
5. Plant cell is extremely small. Can only be seen by a microscope.
6. Cell is the smallest unit part of plants, animals, and all other living things.
7. A nucleus known as a brain or control center of the cell. It gives instructions to cell how to work and grow.
8. Plants retain a definite shape due to the rigid cell wall
9. Plants contain guard cells usually occur in the epidermis of plant leaves or stems.
10. Guard cells help balance the amount of carbon dioxide being absorbed and the water lost through evaporation.
Explanation:
Assessing spinal nerve damage may involve the use of a vibration fork that is tapped along segments of the spinal nerve pathway. which type of sensory receptor detects vibrations?
A vibration fork that is tapped along sections of the spinal nerve system can be used to evaluate spinal nerve injury. Vibrations are detected by tactile receptors, a type of sensory receptor.
What is a spinal nerve?In order to modulate motor and sensory information from the body's periphery, spinal nerves, which are mixed nerves, directly communicate with the spinal cord. Each nerve is made up of fila radicular, or nerve fibers, that originate from the ventral and dorsal roots of the spinal cord. A spinal nerve is a mixed nerve that connects the spinal cord to the body and conveys motor, sensory, and autonomic signals. There are 31 pairs of spinal nerves in the human body, one on per side of the vertebral column. The combination of nerve fibers from the dorsal and ventral roots of the spinal cord creates each spinal nerve. Efferent motor axons are carried via the ventral roots.To learn more about spinal nerve, refer to:
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Which step in a comparative investigation is not included in a descriptive
investigation?
A. Asking questions
B. Collecting data
C. Comparing or contrasting
D. Making observations
comparing and contrating
A(n) _____ is a group of three bases on trna that is complementary to a specific mrna codon. poly-a tail cap codon anticodon
A(n) anticondon is a group of three bases on trna that is complementary to a specific mrna codon. poly-a tail cap codon anticodon
The main function of an anticondon is to form a pair with the condom by mating in order to form an RNA chain, this chain is a sequence of three nucleotides that form a unit of genetic code in a transfer RNA molecule.
What is molecule?It is the union of two or more atoms by chemical bonds, conserving the physical and chemical properties of that substance.
For example: the water molecule is H2O.
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a person studying a topic is presented with new information that conflicts with previous findings. what would a scientist do in this situation
A person studying a topic in research is presented with new information and should evaluate the new information that conflicts with previous findings.
Scientific research is the practical application of a collection of systematic procedures for examining data and phenomena that a researcher uses to create a study.
The primary feature that distinguishes this research from others is its severe discipline, which is evident in the way it adheres to the formal guidelines of the processes to gather the required data and develop the hypotheses that underpin the analysis the researcher made.
As a result, if the researcher uncovers contradictory material that does not corroborate the earlier discoveries, he must assess it in order to determine if it is real or false, allowing science to advance with accurate knowledge.
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PLEASE HELP!!! 50 POINTS TO WHO ANSWERS!!!!In 1907, Dr. Duncan MacDougall performed a series of experiments in which he attempted to measure the weight of the soul as it left a dying person. In his experiments, MacDougall placed a dying person on a scale and measured their weight immediately prior to and following death. MacDougall determined the change in weight to be approximately 21 grams. From these experiments, he concluded that the soul exists and has mass. What is the fundamental scientific flaw in his conclusions?
They are based on the concept of the soul, which is beyond the bounds of science.
They are based on the idea that the soul is made of matter, not energy.
They are based on the assumption that the soul does not remain in the body after death.
They are based on the concept that the soul can be measured.
They are based on the concept of the soul, which is beyond the bounds of science.
Answer: MacDougall placed a dying person on a scale and measured their weight immediately prior to and following death.
Explanation:
Which structures are found in all types of cells?
Cell wall & nucleus
Cell membrane & cytoplasm
Chloroplasts & cell wall
Chloroplasts & Mitochondria
Answer:
The cell membrane, ribosomes, cytoplasm, and DNA.
A client is diagnosed with hepatitis c. what statement made by the client indicates that further education is required regarding the transmission of the virus?
A client is diagnosed with hepatitis c." I probably got the virus when I sat on the toilet seat in a dirty bathroom." this statement made by the client indicates that further education is required regarding the transmission of the virus.
What is hepatitis c?
Hepatitis refers to liver inflammation. The liver is a crucial organ that filters blood, processes nutrients, and fights infections. The function of the liver can be impacted by inflammation or injury. Hepatitis can be brought on by chemicals, drugs, some medical disorders, and heavy alcohol consumption.
A virus is the most frequent cause of hepatitis. Hepatitis A, B, and C are the three most prevalent forms of viral hepatitis in the United States. All forms of viral hepatitis can produce similar symptoms, but they differ in how they spread, how they are treated, and how deadly they are.
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In cladistics, biologists attempt to place species into groups that each include an ancestral species and all of its descendants. A group that is paraphyletic fails to accomplish this goal in what way?.
The group that is paraphyletic fails to accomplish this goal consists of an ancestral species and some, but not all, of its descendants.
What is cladistics?Cladistics is a common method for speculating on the relationships between organisms.Cladistics is based on the idea that members of a particular group share a common evolutionary history.They are "closely related" to other organisms more than to other members of the same group.These groups share characteristics that their distant ancestors lacked. Synapomorphies refer to shared derived characteristics. Cladistics or phylogenetic systematics refers to the process of grouping organisms that share derived characteristics. Taxa that share a large number of derived characters are grouped together more closely than those that do not. A cladogram is a branching hierarchical tree that depicts the relationships.
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The heart pumps about __________ liters of blood a day and contracts about __________ times in a lifetime.
The heart pumps about 5 litres of blood a day and contracts about 3 billion times in a lifetime.
What are the main functions of heart ?1) Pumping oxygenated blood to other parts of body.
2) Maintains blood pressure.
3) It pumps hormones and other substances to different parts of the body.
4) Receiving deoxygenated blood and it carries metabolic waste products from the body and Pumping it to the lungs for oxygenation.
The heart pumps 5 liters blood in a day and contracts about 3 billion times in a lifetime .
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What are the three types of protein structures that contribute to the cytoskeleton?.
Actin filaments (also known as microfilaments), microtubules, and intermediate filaments make up the cytoskeleton's three primary structural elements.
They each have a unique structural makeup and perform somewhat different but related roles.
What three types of cytoskeleton structures are there?Microfilaments, cytoskeleton, and gap junctions make up the cytoplasm of a cell. These elements aid in the organisation of the cell's components and give the cell its form. They serve as a foundation for cell division and mobility as well.
Three main kinds of protein components make up the cytoskeleton. The microfilaments (actin filaments), intermediate filaments, and microtubules are arranged from narrowest to broadest. Myosin is frequently related to microfilaments.
Actin monomers make up microfilaments, whereas intermediate filaments are made up of intermediate filament protein subunits. Microtubules are composed of beta and gamma tubulin dimers.
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What physical force is best resisted by having multiple layers of oral squamous epithelium?.
Answer:
ABRASIONExplanation:
correct me if I'm wrong
Used to make proteins and nucleic acids - DNA and RNA -
which control cell function and are inherited by offspring.
Explanation:
RNA is used to make proteins and nucleic acids
DNA controls cell function and are inherited by offsprings
A mutation that occurs in a sperm cell has the potential of being passed on to the next generation. True or false
Answer:
true
Explanation:
a mutation and a sperm cell will pass on to the next generation because the jeans from the sperm cell are mutated and will
If R = red and r = white in fruit flies, what would
be the result of a cross between a heterozygous
female (red-eyed with one recessive allele) and
a recessive male?
Hint: Draw a Punnett square.
A. 25% red-eyed female, 25% white-eyed female, 25% red-eyed
male, 25% white-eyed male
B. 25% white eyed male, 25% red-eyed male, 50% and red-eyed
female offspring
C. 0% chance of white-eyed flies
The result of a cross between a heterozygous female (red-eyed with one recessive allele) and a recessive male would be 25% white eyed male, 25% red-eyed male, 50% and red-eyed female offspring.
Types of gene :Each gene in each of us has two alleles, or variations. If you inherit two identical copies of a gene, you are said to be homozygous for that gene. In contrast, a genotype with different alleles is called a heterozygous genotype. People with recessive characteristics, such as red hair or blue eyes, are always homozygous for that gene.
Which genes are the heterozygous?The existence of two unique alleles at a specific gene locus. One normal allele, one mutant allele, or two different mutant alleles may be present in a heterozygous genotype (compound heterozygote).
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Answer: Its A
Explanation:
25% 25% AND 25% for each
