Which cytoskeletal component is associated with polarization of a cell?
Answers
Microtubules are the cytoskeletal components most commonly associated with cell polarization.
These hollow tubes of protein are composed of alpha and beta tubulin subunits and are involved in a variety of cellular processes, including cell division, intracellular transport, and cell motility. In polarized cells, microtubules often form an organized network that is oriented in a specific direction, providing structural support and facilitating the movement of organelles and vesicles to specific locations within the cell.
Microtubules are also involved in the formation of the mitotic spindle during cell division, which is essential for the proper segregation of chromosomes. In addition, they are important for the formation and maintenance of the axons and dendrites of neurons, which are critical for proper nervous system function.
Overall, microtubules play a key role in the polarization and organization of cells.
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Question: what is important function of the cell structure in the plasma membrane?
Answers
Which cranial nerve is in charge of the motor control of the muscles that move the tongue?.
Answers
Answer:
Hypoglossal nerve
Explanation:
The hypoglossal nerve controls muscles that move the tongue,
what is measurement
Answers
Measurement is defined as the act of measuring or the size of something. An example of measurement means the use of a ruler to determine the length of a piece of paper. An example of measurement is 15" by 25".
Answer:
This is the act of measuring something or the act of taking the length, weight or height of something,e.t.c.
Explanation:
A proton is a very tiny particle inside an atom. The mass of the proton is estimated to be 0.00000000000000000000000167 g. What is the mass of a proton in specific notion?
A. 1.67 x 10 24 g
B. 16.7 x 10 -25 g
C. 167 x 10 -26 g
D. 1.67 x 10 -24 g
Answers
Answer:
The proton is 1.6726×10−27 kg
Answer:
1.67 x 10-24g
Explanation:
When do the first land vertebrates appear in the geologic time scale?
Answers
Answer:
About 450 million years ago
What cells can live without nuclei
Answers
Answer:
Cells that lack a nucleus are called prokaryotic cells and we define these cells as cells that do not have membrane-bound organelles. So, basically what we're saying is that eukaryotes have a nucleus and prokaryotes do not.
What happens in a young tuna’s life cycle?
Answers
Answer:
He is born he eats some he gains weight he realizes he may have an eating disorder he becomes depressed he becomes very obese and overweight he has very high cholesterol and type 2 diabetes he finally is struck with a major heart attack that kills him in front of his loyal wife of 40 years.
Explanation:
Movement of substances is regulated because membranes are (___) permable
Answers
Answer:
Partially / semi permeable
Explanation:
Only certain substances can move in cells thus membranes are permeable partially.
Part A What is the role of transferrin in the cycle shown above Macrophages in spleen, River, and red bone marrow formation F Feat TRANSFERRIN Amino acids Herne Average RBC15120 days Bliverdin New RBCS Bilirubin 1096 Old and damaged RBCS in the tisadstream Soadstream the rupture of RACS od hemolysis It transports iron ions in the plasma. O It activates marrow to increase RBC production. O It combines with heme to form hemoglobin. O It binds to bilirubin for excretion. Submit Request Answer
Answers
The role of transferrin in the cycle shown above is that it transports iron ions in the plasma.
Transferrin is a protein that plays a crucial role in iron metabolism. In the cycle described, transferrin binds to iron ions and carries them in the bloodstream. Iron is an essential component for the production of hemoglobin, which is necessary for red blood cell (RBC) formation and function.
Macrophages in the spleen, liver, and red bone marrow are involved in the breakdown and recycling of old or damaged RBCs. As RBCs age and become damaged, they are removed from circulation through a process called hemolysis. The released iron from the breakdown of hemoglobin is then bound to transferrin, which prevents its free circulation and potential toxicity.
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Which unicellular gland is responsible for mucus secretion a. adipocyte b. goblet cell c. fibroblast d. mast cell
Answers
The unicellular gland is responsible for mucus secretion is Goblet cell.
Most animal groups share the unicellular exocrine gland known as the goblet cell. The internal epithelia (mucous membranes) of fish, like those of other vertebrates, contain this cell type, which belongs to the second category of secretory cells in the fish skin. The goblet cells secrete mucus, which normally contains a number of important components. Mucins, one of these components, are what give mucus its gel-like characteristics.Two different locations within the lung tissue release mucus. The goblet cells, which produce mucus, are found on the surface epithelium, a component of the tissue lining of the airways.Seromucous glands can be found in the connective tissue layer that lies beneath the mucosal epithelium and they too generate mucus.
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Which of these identified critical target pollutants and established ambient air quality standards?
A. Clean Air Act
B. Geneva Convention
C. Kyoto Protocol
D. Montreal Protocol
Answers
Answer: A. clean air act
Explanation: found the answer on on quizlet flashcards
What do the arrows represent in the picture?
Answers
Explanation:
cause the tree is the producer and the worm well feed on it
Oestrogen inhibits the further production of
follicle stimulating hormone
testosterone
luteinsing hormone
Answers
luteinsing hormone
Explanation:
Answer:
luteinsing hormone
Describe an environmental factor that could influence natural selection and increase genetic diversity.
Answers
Answer:
Explanation:
Environmental factors can influence natural selection because they can increase or decrease. ...
An increase in food and a decrease in predators would most likely genetic variation in a population. ...
In a few generations, this population of beetles changed.
At metabotropic synapses, second messengers are activated in postsynaptic neurons by?
Answers
At metabotropic synapses, second messengers are activated in postsynaptic neurons by G proteins.
Whenever a signal or message is sent from one neuron to another neuron across a synapse, the message takes two forms: an electrical signal and a chemical signal. The electrical signal is transmitted along the axon of the presynaptic neuron and transforms into a chemical signal at the synapse. This chemical message, known as a neurotransmitter, is released into the synaptic cleft and binds to receptors on the postsynaptic neuron to create an electrical signal in the postsynaptic neuron.Second messengers are intracellular signaling molecules that are activated by G proteins in response to neurotransmitter binding at metabotropic synapses. Second messengers can then activate a variety of intracellular pathways to alter cellular activity.
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what is Skeletal major organs and structures?
Answers
Answer:
The skeletal system is your body's central framework. It consists of bones and connective tissue, including cartilage, tendons, and ligaments. It's also called the musculoskeletal system.
Explanation:
2. What is made inside of bones that is carried throughout the circulatory system?
Answers
Answer:
oxygen, calcium or iron
Answer:
Bone Marrow
Explanation:
The inside of your bones is filled with a soft tissue called marrow. There are two types of bone marrow: red and yellow. Redbone marrow is where all new red blood cells, white blood cells, and platelets are made.
Practice 2: which answer best describes another function of the
cell membrane?
a. the cell membrane helps to protect only plant cells from larger
molecules
b. the selective barrier allows small molecules to enter and exit in animal and plant cells
c. animals cells have as thick cell membrane to keep the cells rigid
d. the cell membrane keeps material from entering and exiting the cell
Answers
Answer:
The cell membrane, also called the plasma membrane, is found in all cells and separates the interior of the cell from the outside environment. The cell membrane consists of a lipid bilayer that is semipermeable. The cell membrane regulates the transport of materials entering and exiting the cell.
Explanation:
how might a country run out of water
Answers
Answer
Along with decreasing rainfall comes rising temperatures. By 2050 the U.S. could be as much as 5.7°F warmer, and extreme weather events, such as heatwaves and drought, could be more intense and occur more frequently. As temperatures warm, evaporation increases, further decreasing water in lakes, reservoirs, and rivers.
a - an informed conjecture of what might be true b - coherent body of interconnected statements, based on reasoning and evidence, that explain a variety of observations c - change over time in the proportions of individuals in a population that differ genetically in one or more traits d - all species (living and extinct), have descended from one or a few original forms of life e - features that appear designed to fit organisms to their environment f - individuals of a population with superior features survive and reproduce more successfully than individuals with inferior features g - reconciliation of darwinian evolution with the facts of mendelian genetics h - hypothesis attributed to lamarck suggesting that traits acquired during an individual's lifetime are inherited i - a group of organisms that interact ecologically and reproductively more often than with members of other groups of the same species j - a taxonomic group whose members are all derived from a common ancestor
Answers
Answers to the questions asked in order respectively:
a. hypothesis b. scientific theory
c. populations change d. descent with modification
e. Adaptation f. Directional Selection
g. Neo-Darwinism h. acquired traits are inheritable
i. Demes j. Taxon
a.an informed conjecture of what might be true :
hypothesis
b - coherent body of interconnected statements, based on reasoning and evidence, that explain a variety of observations:
scientific theory
c - change over time in the proportions of individuals in a population that differ genetically in one or more traits:
populations change
d - all species (living and extinct), have descended from one or a few original forms of life :
descent with modification
e - features that appear designed to fit organisms to their environment:
Adaptation
f - individuals of a population with superior features survive and reproduce more successfully than individuals with inferior features :
Directional Selection
g - reconciliation of darwinian evolution with the facts of mendelian genetics:
Neo-Darwinism
h - hypothesis attributed to lamarck suggesting that traits acquired during an individual's lifetime are inherited :
acquired traits are inheritable
i - a group of organisms that interact ecologically and reproductively more often than with members of other groups of the same species:
Demes
j - a taxonomic group whose members are all derived from a common ancestor:
Taxon
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Which of the following describes the fluid mosaic model of the plasma membrane
structure?
O Phospholipid trilayer with embedded proteins
O phospholipid bilayer with embedded proteins, cholesterol and carbohydrates
O triglyceride bilayer with embedded nucleic acids
O Phopholipid monolayer with embedded proteins
Answers
ANSWER: 2) Phospholipid bilayer with embedded proteins, cholesterol and carbohydrates.
EXPLANATION:
it's a bilayer because there are 2 layers (bi) - the inside layer is made of hydrophobic fatty acid tails, while the outer layer is made up of hydrophilic polar heads that are pointed toward the water.carbohydrates are found on the exterior surface of cells. cholesterol is another word for fatty substance and is found alongside phospholipids in the core of the membrane.Predict which body system interacts with the one shown in this image to let you know that you are hungry.
O nervous system
O circulatory system
O respiratory system
O digestive system
Answers
Answer:
What is the digestive system
Explanation:
Digestive System gets nutrients (good) from food and hands it over to the blood and Circulatory System then carries those nutrients where they need to go. It then Filters out waste from food and pushes it through intestines and out the body (and you know how and where it gets out).
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Answer:
nervous system
Explanation:
The nervous system controls the digestive system by sending signals to the brain and organs. The brain sends signals to the stomach, intestines, pancreas, liver, and other organs through nerve cells called neurons. Some of these neurons pass on messages from one part of the body to another through electrical impulses.
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The ability to "do work" (like move muscles, transport large molecules
across a membrane, etc.) requires
A- labor
B-will power
C-energy
D- photosynthesis
Answers
C.
you need energy to do anything
An animal that lives by eating other animals is called what
Answers
Answer:
carnivorous.
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Camouflage a ___ adaptation that allows animals to hide from predators or prey.
patterned
physiological
structural
behavioral
Answers
Acknowledgment messages are a fast and efficient way of transmitting frequently recurring messages to which receiver reaction is likely favorable or neutral.
Indicate whether the statement is true or false
Answers
The statement is true. Acknowledgment messages are indeed a fast and efficient way of transmitting frequently recurring messages to which the receiver's reaction is likely to be favorable or neutral.
Acknowledgment messages are commonly used to acknowledge receipt of information or confirm the completion of a task. They are typically brief and serve to indicate that a message has been received and understood. These types of messages are often used in various communication channels, such as email, instant messaging, or even automated systems.
The statement suggests that acknowledgment messages are effective when the receiver's reaction is expected to be favorable or neutral. This implies that the receiver is likely to appreciate or have no objections to the message being acknowledged. In such cases, acknowledgment messages can be sent quickly and efficiently, without requiring a lengthy response or further discussion.
For example, in a business setting, when an employee submits a report to their supervisor, the supervisor can simply send an acknowledgment message to confirm receipt of the report. This saves time for both parties involved and allows them to proceed with their respective tasks. Similarly, in customer service, an automated acknowledgment message can be sent to customers after they make a purchase or submit a support request, assuring them that their transaction or inquiry has been received.
By using acknowledgment messages for recurring scenarios where the receiver's reaction is likely to be favorable or neutral, organizations can streamline their communication processes and enhance efficiency. It eliminates the need for unnecessary back-and-forth exchanges, enabling individuals to focus on more critical tasks or address issues that require further attention.
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If you were floating in a raft in an ocean current, you and the raft would
O move back and forth
O not move with the water
O move with the current
Answers
Answer: move with the current or move back and forth but you definitely wouldn’t not move
Explanation:
How does soil form on an island that is made of cooled rock from a volcanic eruption?
Answers
Its C i got it right on edge 2020
Explanation:
The food web above represents feeding relationships in a biological community near a deep-sea hydrothermal vent. Hydrothermal vents are geysers on the seafloor that gush super-heated, mineralrich water. The seawater surrounding hydrothermal vents typically contains carbon dioxide (CO2), molecular hydrogen (H2), hydrogen sulfide (H2S), and methane (CH4). Sunlight, however, fails to reach the seafloor where deep-sea hydrothermal vents are located. As part of an investigation, researchers collected living specimens from an area near a deep-sea hydrothermal vent. Mussels in the collection were found to be dependent on molecular hydrogen in seawater. Also, the researchers discovered multiple species of bacteria living in the gills of the mussels.
Mussels use gills for filter-feeding and gas exchange with the surrounding seawater. On the basis of their experimental results, the researchers hypothesized that some bacteria living in the gills of the mussels are capable of chemosynthesis. Which of the following best explains how biological communities near deep-sea hydrothermal vents can exist in a habitat lacking sunlight?
a) Environmental conditions on some distant planets resemble those experienced by organisms
living near hydrothermal vents.
b) Heterotrophs metabolize carbon-containing compounds produced by the photosynthetic
organisms that live on the seafloor.
c) Some organisms rely on energy captured from inorganic compounds to drive basic biological processes.
d) Some organisms that can tolerate high temperatures are single celled, whereas others are multicellular.
Answers
Answer: c) Some organisms rely on energy captured from inorganic compounds to drive basic biological processes.
Explanation:
Deep-sea hydrothermal vents are hot spots of geothermal water. The organisms living in deep-sea vents cannot obtain energy from sunlight. They are dependent on chemosynthesis, which involves the utilization of inorganic substances to produce organic substances, which allows their survival and act as a source of energy. In the given situation, bacteria present on the surface of mussels are capable of chemosynthesis also the mussels are dependent upon inorganic hydrogen in seawater. Thus chemosynthesis supports the survival of organisms living in the deep sea vents.
Horse tail and mucor are not kept in the same kingdom why
Answers
Horse tail (Equisetum) and Mucor are not kept in the same kingdom as they belong to different kingdoms because they exhibit distinct characteristics and are classified based on their evolutionary history, cellular organization, and reproductive strategies.
Horse tails, also known as horsetails or Equisetum, are members of the plant kingdom, specifically the division Equisetophyta.
They are vascular plants that reproduce by spores.
Horse tails have a unique appearance, with jointed stems, whorls of tiny scale-like leaves, and reproductive cones at the tips of their stems.
They have a complex life cycle with alternation of generations, including both a sporophyte (dominant diploid phase) and a gametophyte (haploid phase).
Their cells have a rigid cell wall composed of cellulose, a characteristic feature of plant cells.
On the other hand, Mucor belongs to the kingdom Fungi.
Mucor is a genus of fungi within the phylum Zygomycota.
Fungi are eukaryotic organisms that lack chlorophyll and obtain nutrients through absorption.
They have a filamentous body structure called mycelium, composed of thread-like hyphae.
Mucor reproduces asexually through the production of spores, which are formed by the fusion of genetically distinct hyphae.
Fungi are heterotrophic, meaning they obtain their nutrients by breaking down organic matter in their environment.
The differentiation of horse tails (plants) and Mucor (fungi) into separate kingdoms is based on fundamental differences in their cellular organization, nutritional strategies, and reproductive mechanisms.
While both horse tails and Mucor are multicellular organisms, they belong to distinct lineages of life with diverse evolutionary histories, leading to their classification in separate kingdoms.
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