Human immune deficiency virus is considered an emerging virus because it __________.
Select all that apply.
How are protists different from bacteria and archaea?
They are at least ten times larger.
They can reproduce asexually.
They are eukaryotes.
They consist of both single- and multi-celled organisms.
They have flagella to move.
Ans.
Protists are unicellular or multicellular eukaryotic organisms, such as amoeba, paramecium, and euglena. Protists may be heterotrophic or autotrophic as some protists can synthesize their own food by using sunlight.
Generally, eukaryotic cells are ten times larger than prokaryotic cells. It means protists are also 10 times larger than bacterial cells.
Thus, correct options are:
-They are at least 10 times larger.
-They are eukaryotes.
-They consist of both single- and multi-celled organisms.
Protists are different form bacteria as bacteria are single-celled, prokaryotic organisms. Thus, the correct options are 'they are eukaryotes' and 'they consist of both single- and multi-celled organisms.
Why are the terms dominant and recessive misleading?
Which describes the ability of a community to resist change?
Development of antibiotics (e.g. penicillin). Pure or applied
Do you think osmosis occurs when a cell is in an isotonic solution? explain your reasoning.
Hakeem wants to explain why only one side of the moon is visible from Earth. Which comparison would provide the best support?
the orbital period of Earth with the rotational period of the moon
the orbital period of the moon with the rotational period of the moon
the orbital period of the moon with the rotational period of the Earth
the orbital period of Earth with the orbital period of the moon
The Moon orbits Earth once every 27.3 days and spins on its axis once every 27.3 days. This means that although the Moon is rotating, it always keeps one face toward us.
What is rotation?Rotation refers to an object's spinning motion about its own axis and revolution refers the object's orbital motion around another object.
It is also known as synchronous rotation this is why we only ever see the Moon's nearside from Earth.
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what process recharges this molecules so that it can become ATP again
if you needed a mass measurment accurate to three digits after the decimal, such as 3.149 grams, you would want to use- A) spring scale. B) an electronic balance. C) a triple-beam balance. D) at least two formulas off your formula chart.
What are the primary effects of calcitriol on the body? check all that apply?
Calcitriol has several primary effects on the body, including promoting calcium absorption, maintaining serum calcium and phosphate levels, and supporting bone health and other vital functions.
Explanation:The primary effects of calcitriol on the body include stimulating the intestines to absorb calcium from digesting food, promoting the absorption of calcium and phosphate from the digestive tract, and indirectly increasing calcium uptake by the small intestine.
Calcitriol is vital for maintaining normal serum concentrations of calcium and phosphate, which are important for bone health, muscle contraction, hormone secretion, and neurotransmitter release.
Inadequate levels of calcium can lead to disorders like osteoporosis and osteomalacia in adults and rickets in children.
Calcitriol a) increases blood concentrations of calcium and c) Increase blood concentration of phosphorus by enhancing their absorption and reabsorption in the body. The effects are crucial for maintaining bone health and overall mineral balance.
Calcitriol, the active form of vitamin D, plays a crucial role in regulating calcium and phosphorus levels in the blood. The primary effects of calcitriol on the body include:
Increase blood concentration of calcium: Calcitriol promotes the absorption of dietary calcium from the gastrointestinal tract and enhances the reabsorption of calcium in the renal tubules, reducing calcium loss in the urine.Increase blood concentration of phosphorus: Calcitriol works together with parathyroid hormone (PTH) to increase phosphorus absorption in the gastrointestinal tract, contributing to higher blood phosphorus levels.Based on these effects, the correct answers are (a) and (c).
complete question:
What are the primary effects of calcitriol on the body? Check all that apply.
a) Increase blood concentration of calcium
b) Decrease blood concentration of phosphorus
c) Increase blood concentration of phosphorus
d) Decrease blood concentration of calcium
Yams were both an important agricultural product and a mainstay of artistic creation for which people
Answer: The Abelam of Papua New Guinea
Explanation:
The movement of air into and out of the lungs, or breathing, is properly referred to as pulmonary __________.
The movement of air into and out of the lungs, or breathing, is properly referred to as pulmonary ventilation.
Pulmonary ventilation includes two main processes:
Inspiration (Inhalation): This is the process of drawing air into the lungs. During inspiration, the diaphragm and external intercostal muscles contract. This contraction increases the size of the thoracic cavity and lung volume, causing the ribs to expand and move outward. The pressure within the lungs (intra-alveolar pressure) becomes lower than the atmospheric pressure, causing air to flow into the lungs.Expiration (Exhalation): This is the process of expelling air from the lungs. During expiration, the diaphragm and intercostal muscles relax, causing the thorax and lungs to recoil. This decreases the volume of the thoracic cavity, increasing the pressure within the lungs (intra-alveolar pressure) to be higher than the atmospheric pressure, forcing air out of the lungs. During forced exhalation, the internal intercostal and abdominal muscles may also be involved to push air out more effectively.The four types of sperm cells illustrated below are produced by the process of
A scientific _______ is a principle that describes the behavior of a natural phenomenon. ? A. analysis
Answer:
The correct answer will be- Scientific law
Explanation:
A statement proposed before the experiment related to the natural phenomenon which explains the event to a limited extent is known as the scientific hypothesis.
The scientific hypothesis when tested and proved by the researcher and fellow researchers many times transforms the hypothesis either to a scientific law or theory.
The scientific law is a statement which can contain quantifiable variables which describes the pattern and behavior of the natural phenomenon but do not explain why this behavior is observed which in turn is explained by the scientific theory.
Thus, Scientific law is the correct answer.
What is a high-protein diet commonly associated with?
A high-protein diet is typically associated with weight loss and muscle building. An example is the Paleolithic or paleo diet, developed in the 1970s, which includes foods like lean meats, fish, and seeds, mimicking a hunter-gatherer lifestyle.
Explanation:A high-protein diet is often associated with strategies for weight loss and muscle building. An example of a high-protein diet is the Paleolithic diet or the paleo diet. This diet, developed in the 1970's by gastroenterologist Walter Voegtlin, is based on foods that were eaten during the Paleolithic era. It includes lean meats, fish, fruits, vegetables, nuts, and seeds, which are rich sources of protein. The paleo diet exudes the belief that the human body is designed for a hunter-gatherer lifestyle.
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both ADP and atp contains which of these sugars
A adenine
B ribose
C glucose
D guanine
You visit a region with two-way currents to see where many marine organisms inhabit shallow, nutrient rich waters. you are visiting an estuary. the open ocean. an inland wetland. a region where a stream flows into a lake.
I believe that you are visiting an estuary.
Estuaries are partially covered coastal body of saline water with one or more rivers or streams that are flowing into it, and this comes with a free connection to the open sea.
Answer:
estuary
When inhaled gases pass through conducting airways, the gases are "_________" meaning that they are warmed to body temperature, humidified, and cleansed of particulate matter?
You are treating a 55-year-old male with heatstroke when he suddenly becomes unresponsive and stops breathing. assessment of his carotid pulse reveals that it is weak and rapid. you should:
Which of these sources add water to lakes? Select the three correct answers. A.Rain runoff B.Groundwater C.Melting snow D.Ocean waves
Answer: A. Rain runoff B. Groundwater C. Melting snow
A lake is a water body that is surrounded by land. They are found in mountains, deserts, plains and in seashores. The water in lakes comes from rain, snow, melting ice, streams, groundwater and seepage. Mostly lakes contain freshwater.
The correct answers are Rain runoff, groundwater, melting snow.
Water from the rain flows through various paths and goes into lakes. It carries various types of small leaves or soil particles along with it into the lake.
The ground water can also form lakes and is the source of freshwater.
The melting snow is also the source of fresh water that flows and reaches the nearby ponds or lakes present in the nearby areas.
Which of the following relationships is incorrect?
A. Rough ER -- Site of protein synthesis
B. Chloroplasts -- site of lipid synthesis
C. Cell wall -- Support and protection
D. Nucleus -- holds genetic material
Study Figure 10-1. The strong nuclear force felt by a single proton in a large nucleus
A. is much greater than that felt by a single proton in a small nucleus.
B. is much less than that felt by a single proton in a small nucleus.
C. is about the same as that felt by a single proton in a small nucleus.
D. is about the same as the electric force felt by a single proton in a small nucleus.
D. is about the same as the electric force felt by a single proton in a small nucleus.
Explanation;Nuclear force is the type of force that acts between the protons and the nucleus of atoms. Strong nuclear force is one of the four basic forces in nature, others being gravity, the electromagnetic force, and the weak force, and is the strongest,Strong nuclear force functions to hold the subatomic particles that is the protons and the neutrons,of the nucleus together.The strong nuclear force felt by a single proton in a large nucleus is about the same as that felt by a single proton in a small nucleus.Scientists have found that Mars has water ice at its poles, even though volcanic activity has never been observed on Mars. Would this prevent the inside-out model from becoming a theory?
A. Yes, because any comet that hit Earth also hit Mars.
B. Yes, because it shows that volcanic activity is necessary for a planet to have liquid water.
C. No, because no data from Mars is applicable to Earth.
D. No, because a single observation is not sufficient to discredit a theory.
Answer:
c
Explanation:
Scientists have found that Mars has water ice at its poles, even though volcanic activity has never been observed on Mars. No, because no data from Mars is applicable to Earth.
Who are scientists?The shift to renewable energy, the environment, digital society, health, mobility, and urbanization. enough difficulties for you to use science, engineering, and design to improve society.
You can collaborate with outstanding scientists at TU Delft, many of whom are leaders in their fields. You frequently collaborate with other scientists, as well as with businesses and governments, in multidisciplinary teams. In a free global community, you can practice intellectual freedom.
They gain a lot of knowledge because our students are well-known across the world for their accomplishments in projects like Project March, the Hyperloop, and the World Solar Challenge. Our scientists also share their expertise through online learning.
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A cell is placed in a water solution with the same salt concentration as the cell. The cell is placed in a _____.
hypotonic solution
hypertonic solution
isotonic solution
Answer: Isotonic solution
Isotonic solution is the solution in which the concentration of a solute is the same inside and outside of the cell. The concentration of solute is at equilibrium inside and outside of the semi- permeable membrane of the cell. The shape of the cell will remain unchanged as neither water nor solute will come out or enter the cell.
Why can i see different diastereomers as different spots by tlc?
Water is unusual because it expands as it freezes. Very few substances have this property. The reason liquid water is more dense then ice can be best explained by?
Answer:
When the water freezes a reticulum is formed that occupies more space and is less dense than liquid water since the water on cooling decreases its volume. The reason why the water is denser in a liquid state is because, when it goes to a solid state, the water molecules are cold and still and the hydrogen bonds keep them constantly at the same fixed distance, while when they are in a liquid state, their hydrogen bonds are not at a fixed distance, but more separated.
Name three important needs for water?
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what is a song, story or poem about the significance of Aryan and other tribal migrations on the Indus Valley oh and can the song or poem have like 12 lines please?
Tonsils have blind-ended structures called ________ that trap bacteria and particulate matter.
Answer:
tonsillar crypts
Explanation:
What are the monomers (building blocks) of a dna molecule? amino acid
b. polypeptide
c. nucleotide
d. nitrogenous base?
Answer:
nucleotide are the monomers, or small units, used in the synthesis of DNA molecules.
Explanation:
Amino acids are the monomers of this biomolecule.
lipids
nucleic acids
carbohydrates
proteins
Final answer:
Amino acids are the monomers of proteins, each consisting of a central carbon atom, an amino group, a carboxyl group, a hydrogen atom, and a variable R group. option D
Explanation:
Amino acids are the building blocks, or the monomers, that make up proteins. Every amino acid shares the same core structure, consisting of a central carbon atom (alpha carbon), an amino group (-NH₂), a carboxyl group (-COOH), and a single hydrogen atom. Diversifying these amino acids is their R group, which is different for each amino acid, giving it unique characteristics. The union of amino acids through condensation reactions forms polyamide polymers known as proteins, playing an essential role in various biological functions.