Answer:
invasive species
Which structure is labeled X in the diagram below?
A.nucleic acid
B.lipid envelope
C.protein tail
D.capsid protein
Answer;
D. Capsid protein
Explanation;
-Capsid refers to the protein shell of a virus. Capsid is made up of protomers which makes oligometric structural subunits.
The capsid play various roles which includes;
Protecting the nucleic acid digestion by host enzymesIt helps in the attachment of the virion to the host cell It also provides proteins that enable the penetration of the virion to the host cell membrane.The correct answer is option D. Capsid protein
This protein is found in the virus. It is the protein shell of virus. Capsid protein is made of protomers which makes oligometric structural subunits.
It has several functions:
It protects the digestion off nucleic acids by the host enzymes.
It helps in the attachment and penetration of the virion to the host (cell membrane)
In humans, a combination of cx chromosomes results in a female zygote and that of xy results in male zygote from whom does a male zygote inherit an X chromosome
What are chromosomes?
A. Strands of DNA wrapped around proteins
B. Any organism that contains DNA
C. The alleles that cause certain traits
D. A form of virus that infects cells
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In what era did reptiles become increasingly dominant??
Cenozoic
Paleozoic
Mesozoic
Precambrian
which statement best describes the relationship between the hypothalamus and the pituitary gland?
a. the anterior pituitary gland makes hormones that are released by the hypothalamus
b. the hypothalamus produces releasing hormones that promote the release of particular hormones from the anterior pituitary
c. the hypothalamus produces releasing hormones that promote the release of particular hormones from the posterior pituitary
d. the posterior pituitary sends nervous signals to the hypothalamus to prompt the release of hormones
The hypothalamus produces releasing hormones that stimulate or inhibit hormone secretion from the anterior pituitary; the posterior pituitary stores and releases hypothalamic-produced hormones.
Explanation:The correct answer to the question about the relationship between the hypothalamus and the pituitary gland is choice b. The hypothalamus produces releasing hormones that promote the release of particular hormones from the anterior pituitary. The anterior pituitary manufactures seven hormones, of which the production is regulated by the hypothalamic hormones through the hypophyseal portal system. These hypothalamic hormones can either be releasing or inhibiting, thereby controlling the amount of hormone secreted by the anterior pituitary. Conversely, the posterior pituitary does not make hormones but stores and releases hormones like ADH and oxytocin, which are produced by the hypothalamus.
On what sample below would Carbon-14 be most useful for dating? Question 3 options: Mummies from Egypt Stromatolites Rocks from the Archaean Tyrannosaurus Rex bones
a monomer is the (building block,many molecules) of a biomolecule
How did fossil's provided evidence for the continental drift theory?
What are two elements of meiosis that add variation to our population?
(Hint: one occurs in prophase 1 and the other in metaphase 1.)
What anatomical feature is responsible for the cervical enlargement of the spinal cord?
The cervical enlargement of the spinal cord is a region with a larger population of neurons that controls the appendicular muscles, especially in the upper limbs. This enlargement is supported by the structure of the cervical vertebrae, specifically those like C4 and C5.
Explanation:The cervical enlargement of the spinal cord corresponds to the region of the ventral (anterior) horn that has a larger population of neurons. This region is responsible for the regulation of the appendicular muscles, particularly those in the upper limbs, including the fine musculature of the fingers. The density of the neuronal population in the cervical enlargement is greater because of the greater control required over these muscles.
The cervical vertebrae, particularly those like C4 or C5, are designed to accommodate this enlargement. They have features such as a small body and a bifid (Y-shaped) spinous process. These vertebrae also have openings called the transverse foramen for the passage of cervical spinal nerves and an artery that supplies the brain.
In summary, cervical enlargement is a distinct anatomical feature of the spinal cord and is characterized by a high density of neurons in the anterior horn meant to control the appendicular muscles of the upper limbs. It is accommodated by the structure of the cervical vertebrae.
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Which of the following statements about tolerance range is true?
a.
Tolerance range is different for different organisms.
b.
The tolerance range is the total number of organisms that can be supported by an ecosystem.
c.
Tolerance range is affected by biotic factors in an ecosystem.
d.
The available water supply does not impact an organism’s tolerance range.
Tolerance range is different for different organisms, and it's the span within which different species can survive with respect to various abiotic factors like temperature and dissolved oxygen. Hence the correct option is A.
The correct statement about tolerance range is that it is different for different organisms. Each species has its own range of tolerance for various abiotic factors, such as temperature, dissolved oxygen, and salinity. The tolerance range for a given factor is the range within which a particular organism or population can survive. Abiotic factors, which are non-living chemical and physical parts of the environment like water and sunlight, greatly impact an organism's tolerance range. For instance, freshwater fish have a narrow tolerance range for dissolved oxygen. Significant changes in abiotic factors can lead to adverse effects or even the death of organisms that are not highly adaptable to those changes.
Which of the following statements is true about the taiga biome, but not the alpine?
a.
Temperatures are below freezing during the winter.
b.
Precipitation can average 12 inches annually.
c.
It has two distinct seasons.
d.
It is characterized by coniferous trees.
the correct answer is D
Which structure(s) is/are lateral to the nose?
What would happen if gametes were not haploid?
a. The offspring would have half the number of chromosomes it is supposed to have.
b. The offspring would have double the number of chromosomes it is supposed to have.
c. The offspring would be genetically identical to it's parent.
d. The offspring would be genetically different from it's parent.
Which is an example of a eukaryote? A) Euglena B) AIDS virus C) lactobacillus Eliminate D) cyanobacteria
Final answer:
The example of a eukaryote from the provided options is A) Euglena. Euglenophytes such as Euglena have a nucleus enclosed within a membrane, which is a defining characteristic of eukaryotic cells. The other options are either prokaryotes or viruses, which are not eukaryotes.
Explanation:
The example of a eukaryote from the given choices is A) Euglena. Eukaryotes are organisms whose cells have a nucleus enclosed within a membrane, along with various other specialized organelles. Euglenophytes, including Euglena, are unicellular, aquatic organisms that have characteristics of algae and fall under the domain Eukarya, possessing a distinct nucleus. In contrast:
B) AIDS virus (HIV) is not a eukaryote; it is a virus, which lacks a cell structure and is considered neither a prokaryote nor a eukaryote.C) Lactobacillus is a genus of bacteria, so it is a prokaryote.D) Cyanobacteria are also prokaryotes as they lack a nucleus and membrane-bound organelles.Therefore, the correct answer to the question is A) Euglena.
Plasma consists mostly of _
Plasma, often referred to as the fourth state of matter, primarily consists of ions and free electrons. This basic composition gives it unique properties like the ability to conduct electricity. The Sun serves as a common example of a plasma.
Explanation:Plasma is often described as the fourth state of matter, distinct from solids, liquids, and gases. It mostly consists of ions and free electrons, which means it is essentially an ionized gas. In a plasma, a certain proportion of the particles are ionized, that is, they have had some of their outer electrons removed. T
his ionization process gives plasma unique properties, such as being able to conduct electricity and being influenced by magnetic fields. An example of plasma that one might be familiar with is the Sun, as it is predominantly made up of plasma.
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Break down the terms
Biceps
Triceps
The thermonuclear fusion that occurs in the sun is a process involving?
A)electricity and hydrogen
B)heat and fused nuclei
C)the creation of energy
D)the destruction of energy
heat and fused nuclei
What are the inferred pressure and temperature at the boundary of earth's stiffer mantle and outer core?
The pressure at the boundary of Earth's stiffer mantle and outer core is estimated to be extremely high, with an estimated temperature range of 4,000 to 5,000 degrees Celsius.
The inferred pressure and temperature at the boundary of Earth's stiffer mantle and outer core can be estimated based on scientific understanding of Earth's layers.
At the boundary, the pressure is believed to be extremely high due to the weight of the overlying materials.
The pressure in Earth's core is estimated to be around 3.6 million bars, which is equivalent to 3.6 million times the atmospheric pressure at sea level.
This immense pressure is caused by the gravitational compression of the materials.
In terms of temperature, the outer core is estimated to have temperatures between 4,000 to 5,000 degrees Celsius.
This high temperature is due to the heat generated by the radioactive decay of elements in the core and the residual heat from the Earth's formation.
Final answer:
The pressure at the boundary between Earth's mantle and outer core is approximately 96,667 MPa, and the temperature is around 2,500°C or higher due to the intense conditions deep within the Earth.
Explanation:
The inferred pressure and temperature at the boundary between the Earth's mantle and the outer core are extreme due to the depth at which this boundary occurs. The mantle extends down to a depth of about 2900 kilometers, and the pressure increases with depth. By using the given rule of thumb that 3 km depth equals approximately 100 MPa (megapascals), the pressure at the mantle-outer core boundary would be approximately 96,667 MPa (or around 967 Gigapascals, since 2900 km is approximately 967,000 m). The temperature, as mentioned for the molten iron in the core, would be around 2,500°C. However, this could be even higher at the boundary due to temperature gradients within the mantle and core.
list five features that form by glacial depositions
There's a meteor shower tonight! It happens primarily in the _____.
-troposphere
-stratosphere
-mesosphere
-thermosphere
The anser is C, mesosphere
A chef chops vegetables into a bowl of water. Would you expect the vegetable slices to gain or lose water? Explain your answer in terms of water potential.
Imagine that you are an agri-science consultant to a large corporate farm that raises 7000 acres of wheat on a desert land adjoining the Mediterranean Sea. Just before the wheat matures, all the wells used for irrigation water run dry. The farm manager wants to irrigate the fields with water drawn from the Mediterranean. From previous tests, you know that the average solute potential of root tissue taken from the wheat fields is -11.13 bars. You test the seawater and determine its solute potential to be -24.26 bars. What will you advise the farm manager and why?
A marine clam is mistakenly added to a freshwater aquarium. What will happen to the clam and why?
When a chef chops vegetables into a bowl of water, the vegetable slices would gain water due to osmosis. The farm manager should advise against using seawater for irrigation as it would lead to dehydration of the wheat plants. When a marine clam is added to a freshwater aquarium, it would likely dehydrate and die.
Explanation:When a chef chops vegetables into a bowl of water, the vegetable slices would gain water due to the process of osmosis. Osmosis is the movement of water molecules from an area of lower solute concentration (higher water potential) to an area of higher solute concentration (lower water potential). In this case, the vegetables have lower solute concentration compared to the water in the bowl. Therefore, water will move into the vegetable slices, causing them to gain water.
Regarding the farm irrigation dilemma, the water potential of the seawater (-24.26 bars) is lower than the solute potential of the wheat field root tissue (-11.13 bars). To ensure water uptake by the wheat plants, the farm manager should advise against using seawater for irrigation. The lower water potential of seawater would create a water potential gradient that would lead to water moving out of the wheat plants, causing dehydration and potentially damaging or killing the crops.
When a marine clam is mistakenly added to a freshwater aquarium, the clam would likely dehydrate and die. The freshwater has a higher water potential compared to the marine clam's tissues, resulting in water moving out of the clam through osmosis. As a result, the clam would lose water and wouldn't be able to survive in the freshwater environment.
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Match the following types of nervous systems with their functions.
1. central
2. peripheral
3. somatic
4. autonomic
5. sympathetic
6. parasympathetic
sensory and motor nerves running to and from the CNS
main interpretation and processing center
relaxing responses
controls voluntary responses
controls automatic responses
fight-or-flight responses
The following are the types of nervous system and their functions.
1. Parasympathetic- functions as the relaxing response.
2. Sympathetic - functions as the flight and fight response.
3. Autonomic - it functions as the controller of automatic response.
4. Somatic- functions as controling voluntary response.
5. Peripheral- works as motor nerves and sensory which runs from and to central nervous system.
6. Central- works as the main interpretation and center of processing.
The CNS processes and interprets information, while the PNS transmits sensory and motor signals. The somatic nervous system controls voluntary responses, and the autonomic nervous system controls involuntary responses, including the sympathetic (fight-or-flight) and parasympathetic (relaxing) systems.
Match the Types of Nervous Systems with Their Functions
Central nervous system: main interpretation and processing centerPeripheral nervous system: sensory and motor nerves running to and from the CNSSomatic nervous system: controls voluntary responsesAutonomic nervous system: controls automatic responsesSympathetic nervous system: fight-or-flight responsesParasympathetic nervous system: relaxing responsesThe central nervous system (CNS) consists of the brain and spinal cord, which are responsible for interpreting information and processing it. The peripheral nervous system (PNS) acts as a communication line, transmitting sensory and motor signals to and from the CNS. The somatic nervous system, a part of the PNS, controls voluntary movements of muscles, while the autonomic nervous system governs involuntary functions such as heart rate and digestion. The autonomic nervous system is further divided into the sympathetic nervous system, which handles 'fight-or-flight' responses in stressful situations, and the parasympathetic nervous system, which promotes 'rest and digest' responses during periods of relaxation.What are body parts similar in origin and structure called
Describe the process of blood clotting. ...?
Answer: Blood clotting is a process of clumping or coagulation that occurs in body when blood vessels ruptured.
Explanation: Process of blood clotting involves :-
1) It starts by injury in body by which blood vessels ruptured.
2) After that vessels contraction takes places to control blood loss of the body
3) Then blood platelets become activated. Blood platelets are cells of blood which are key component of blood clotting. These tiny cells surround the wound.
4) In response to the blood loss , a protein ( Fibrin ) released and then it polymerized , which together with platelets form a clot over the wound and clotting of blood takes place.
17. Replication, transcription, and translation
A.
all refer to the synthesis of macromolecules.
B.
refer to RNA synthesis, DNA synthesis, and protein synthesis, respectively.
C.
require the synthesis of polysaccharides.
D.
would be expected to be exergonic reactions.
E.
all use nucleotides as building blocks.
...?
Replication, transcription, and translation correspond to DNA synthesis, RNA synthesis, and protein synthesis, respectively, and they are crucial anabolic processes that facilitate the flow of genetic information from DNA to RNA to protein.
Explanation:When it comes to replication, transcription, and translation, these terms refer to different processes within a cell but are all centered around the handling of genetic information and the synthesis of biomolecules.
Replication refers to the process of copying DNA before cell division, ensuring that each new cell receives a complete set of genetic instructions. Replication is considered an anabolic process as it builds new molecules - in this case, DNA.
Transcription is when the information in DNA is transcribed into messenger RNA (mRNA). This RNA synthesis lays the groundwork for making a specific protein.
Lastly, translation is the process where ribosomes read the information on mRNA and synthesize proteins. During this process, amino acids are linked together to form polypeptides, which fold into functional proteins. Translation is also considered an anabolic process.
Therefore, the correct answer to the student's question, '17. Replication, transcription, and translation,' would be B. They refer to RNA synthesis, DNA synthesis, and protein synthesis, respectively.
Which pair of compounds are raw materials for cellular respiration
Final answer:
The raw materials for cellular respiration are oxygen and glucose, which are used by cells to generate ATP, with carbon dioxide and water as byproducts, intertwining with the carbon cycle and photosynthesis.
Explanation:
The pair of compounds that are raw materials for cellular respiration are oxygen (O₂) and glucose (C₆H₁₂O₆). In the process of cellular respiration, cells take in these raw materials to produce energy in the form of adenosine triphosphate (ATP), along with byproducts carbon dioxide (CO₂) and water (H₂O). Oxygen is acquired through breathing in animals, and glucose comes from the digestion of food. This process not only generates vital energy for cellular activities but also plays a key role in the carbon cycle, interacting with the process of photosynthesis in plants.
The pupil opens and closes automatically explain wether this is involuntary or voluntary action
Glucose will pass through a cell membrane with the aid of what?
The discovery that the moon is similar in composition to the outer portions of the earth most supports the _____ theory.
Answer: Giant-Impact Theory
Explanation:
There are many theories discussing the formation of moon. One of the most accepted theories is:
Giant-Impact theory which suggests that a Mars sized object collided with the Earth and the debris clumped together due to gravitational force and started orbiting earth which is now the Moon. Thus, the moon has similar composition as the outer portions of the Earth.