Biologists have been able to keep isolated chloroplasts or
mitochondria for a few hours or days. can these structures be
considered alive?
Answers
Answer:
Isolated chloroplasts or mitochondria cannot be considered alive, because although they can survive while isolated for a few hours or days and they resemble that of an independent cell (which are alive), they don't metabolise energy, and they don't have cells.
Related Questions
Of the following, which would
stay in the stomach the
LONGFST?
A. potato chips
B. a candy bar
C. meat
Answers
Of the following would stay in the stomach the longest is c. meat.
The reason behind this is the digestive process. When food enters the stomach, it is broken down into smaller components for easier absorption in the body and carbohydrates, like those found in potato chips and candy bars, are relatively simple molecules that are broken down more quickly by enzymes in the stomach and small intestine. As a result, they pass through the digestive system relatively quickly. On the other hand, meat contains proteins and fats, which are more complex molecules.
The digestion of proteins and fats requires more time and effort from the body, as enzymes in the stomach and intestines work to break these components down into absorbable units. Moreover, the stomach releases gastric juices, including hydrochloric acid and the enzyme pepsin, to break down proteins, this process takes longer compared to the breakdown of carbohydrates. So therefore, meat would stay in the stomach the longest, as it requires more time and effort for the body to digest and absorb its nutrients. The slower digestion of proteins and fats ensures that these essential nutrients are adequately processed and absorbed by the body.
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A gas evolving reaction
Answers
What event likely shaped the perspective of john locke on human nature?
Answers
what is irrigation ??
Answers
Answer:
Irrigation is the artificial process of applying controlled amounts of water to land to assist in the production of crops, but also to grow landscape plants and lawns, where it may be known as watering.
Answer:
Irrigation is the artificial application of water to the soil through various systems of tubes, pumps, and sprays. Irrigation is usually used in areas where rainfall is irregular or dry times or drought is expected. There are many types of irrigation systems, in which water is supplied to the entire field uniformly.
if a nucleus has 8 chromosomes during interphase, after replication already took place during meiosis, how many does it have after telophase i?
Answers
If a nucleus has 8 chromosomes during interphase, after telophase I of meiosis, it would have 8 chromosomes.
During telophase I of meiosis, the chromosomes have already undergone replication during the preceding S phase of interphase. The purpose of meiosis is to reduce the chromosome number by half, leading to the formation of haploid cells. In telophase I, the homologous chromosomes separate and move to opposite poles of the cell. Each resulting daughter cell will contain a combination of chromosomes from the homologous pairs, but the total number of chromosomes remains the same.
Therefore, if the nucleus had 8 chromosomes during interphase, it would still have 8 chromosomes after telophase I. The further reduction in chromosome number occurs in the subsequent division, called meiosis II.
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instead of defining life, scientists have decided to what?
Answers
biological controls are frequently used to replace persistent chemical pesticides. which of the following represents the greatest potential risk of using biological controls?
Answers
The greatest potential risk of using biological controls is the possibility of the biological control agent becoming a pest itself and causing harm to non-target species.
Biological control is the use of living organisms to control pests and pathogens. It involves introducing natural enemies of a pest species, such as predators, parasites, or pathogens, to reduce their population. This method is seen as a more sustainable alternative to chemical pesticides, as it relies on the natural relationships between species and helps to maintain a balance in the ecosystem. The goal of biological control is to suppress the pest population without causing harm to non-target species. However, there is always a risk that the biological control agent could become a pest itself, so careful consideration and monitoring are necessary.
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What are the biological controls that are frequently used to replace persistent chemical pesticides. which of the following represents the greatest potential risk of using biological controls?
How does the bicoid protein provide positional information along the anterior-posterior axis of the fly embryo?.
Answers
Answer: It is present at high concentration at the anterior end and low concentration at the posterior end
Explanation:Gene expression in developing organisms is regulated on several different levels.
[GT.02H]One scientist kept a radioactive material in a container. After two half lives, the amount of radioactive material left in the container was 2 grams. What was the original mass of radioactive material in the container? (4 points)
3 grams
4 grams
6 grams
8 grams
Answers
Answer:
6 Grams
Explanation:
Answer:
I believe the answer is A. 3 grams
What does currency mean? What does the information cycle have to do with currency?
Answers
Currency refers to the system of money that a country or region uses as a medium of exchange for goods and services. It can come in the form of coins, paper bills, or digital units of value. Currency is an essential aspect of modern economies and allows individuals and businesses to conduct transactions with one another.
It also plays a crucial role in international trade and exchange rates. The information cycle has a significant impact on currency because it affects the economic and political conditions of countries, which can cause fluctuations in exchange rates and impact the value of different currencies.
The flow of information about a country's economic health, political stability, and international relations is critical to understanding its currency's value and how it interacts with other currencies around the world. Therefore, keeping up with the information cycle is essential for investors, traders, and policymakers who want to make informed decisions about currency markets.
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Identify one food chain in this ecosystem.
Answers
Answer:
Sun -> Grass -> Beetle -> Blue Jay
Sun, Grass, Worms, Woodpecker
can someone send me the gizmo coral reefs 1 answer key..
Answers
Answer:
Explanation:
No but of u ask the questions I can help
which receives dual innervation? arrector pili muscle sweat glands in the axillary region adrenal medulla coronary arterioles
Answers
The arrector pili muscle and sweat glands in the axillary region receive dual innervation. Option A is correct.
Dual innervation refers to the receiving of nerve fibers from both the sympathetic and parasympathetic divisions of the autonomic nervous system. The arrector pili muscle, which is responsible for causing hair to stand up (goosebumps), and the sweat glands in the axillary region are examples of structures that receive dual innervation.
The arrector pili muscle is innervated by both sympathetic and parasympathetic fibers. The sympathetic fibers cause contraction of the muscle, leading to the hair standing up, while the parasympathetic fibers have a minor role in regulating its activity.
Similarly, the sweat glands in the axillary region receive dual innervation. Sympathetic fibers stimulate sweat production, while parasympathetic fibers have a minor role in controlling the activity of these glands.
On the other hand, the adrenal medulla and coronary arterioles do not receive dual innervation. The adrenal medulla Erector pili muscles is innervated solely by sympathetic fibers, and the coronary arterioles are primarily innervated by sympathetic fibers as well.
Therefore, among the given options, the arrector pili muscle and sweat glands in the axillary region receive dual innervation.
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The complete question is
Which receives dual innervation?
A. arrector pili muscle sweat glands in the axillary region
B. adrenal medulla coronary arterioles
Which of the following structures would be found between the glomerular capsule and the descending tube? a) Renal papilla b) Ascending limb c) Distal convoluted tubule d) Proximal convoluted tubule e) Collecting duct
Answers
The structure that would be found between the glomerular capsule and the descending tube is:
d) Proximal convoluted tubule
Here's a step-by-step explanation:
1. Glomerular capsule (also known as Bowman's capsule) is the initial part of the nephron, where blood filtration begins.
2. After filtration in the glomerular capsule, the filtrate (now called glomerular filtrate) enters the proximal convoluted tubule.
3. The filtrate then travels through the descending limb (descending tube) of the loop of Henle, continuing its journey through the nephron.
So, the correct answer is the proximal convoluted tubule (option d).
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Which instrument would be best for measuring mass? *
O Scale that measures grams
O A Flask
O Scale that measures pounds
O A graduated Cylinder
O Measuring tape
Answers
Answer:
Scale that measure pounds
Answer:
Scale that measures grams.
Explanation:
The filaments of the cytoskeleton that have the smallest diameter are Question 4 options: actin filaments thick filaments in the sarcomere intermediate filaments microtubules
Answers
The filaments of the cytoskeleton that have the smallest diameter are actin filaments. These filaments are made up of actin proteins and are the most abundant filaments in the cytoskeleton.
They play a crucial role in various cellular processes such as cell division, muscle contraction, cell movement, and maintenance of cell shape. Actin filaments are highly dynamic and can rapidly assemble and disassemble, allowing them to participate in rapid changes in cell shape and movement. They also interact with other cytoskeletal filaments and proteins to form complex networks that contribute to cell function. Overall, actin filaments are essential components of the cytoskeleton and are critical for the proper functioning of cells.
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Muscular arteries have multiple layers of ______ muscle fibers that enable better vasoconstriction and vasodilation in these vessels.
Answers
Muscular arteries have multiple layers smooth muscle fibers that enable better vasoconstriction and vasodilation in these vessels.
What is vasoconstriction and vasodilation?Vasodilation. an increase in blood channel diameter that facilitates increased blood flow Vasoconstriction. a reduction in a blood vessel's diameter that makes it less blood-flow-friendly
Contrary to vasodilation, vasoconstriction occurs. Your blood vessels will dilate during vasodilation, while they will constrict during vasoconstriction. Muscles in the blood vessels have contracted, which is the cause. Some of your body's tissues experience restricted blood flow when vasoconstriction takes place.
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What is differentiation?
Answers
Answer:
when a cell changes from one cell type into another
Explanation:
Differentiation switches certain genes on in some cells and certain genes off in other cells. This created specialized cells programmed to perform certain functions.
Explanation:
So, unicellular organisms are simply organisms with only one cell, like bacteria. This is the difference between multicellular and single cellular organisms. The cells in multicellular organisms (like in animals and plants) are differentiated or have differentiation. In differentiation, simple cells become specialized. In this process, they can change in 5 different ways. They are shape, size, metabolic activity, responsiveness to stimuli, and/or genetic composition.
For example, Liver cells look and function differently from our white blood cells. Also, nerve cells are extremely different from red blood cells. However, all of these different cells came from a single cell. The reason behind this is differentiation. Differentiation moves around certain genes in some cells and certain genes off in other cells. This creates specialized cells programmed to perform certain functions.
a movement that decreases the angle of a joint anterior to the coronal, or frontal, plane
Answers
The movement that you are referring to is known as abduction. It is a movement that occurs in coronal plane, where a body part moves away from the midline of the body.
This can occur in any joint, including the shoulder, hip, and knee. Abduction is the opposite of adduction, which is a movement that brings a body part closer to the midline of the body. For example, lifting your arm out to the side is abduction, while bringing your arm back down to your side is adduction.
Abduction is an important movement in many activities, such as sports and fitness. For example, in basketball, players use abduction to move their arms out to the side to block a shot or grab a rebound. In weightlifting, exercises such as lateral raises and leg lifts are designed to target the muscles that perform abduction.
Overall, abduction is an important movement that allows us to move our limbs away from our body and perform a wide range of activities.
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(This is about differentiation) Each of the three cell layers became different parts of the adult organism. What does that mean about the cells that were once identical?
Answers
The process during which young, immature (unspecialized) cells take on individual characteristics and reach their mature (specialized) form and function.
What is Organism?An organism refers to a living thing that has an organized structure, can react to stimuli, reproduce, grow, adapt, and maintain homeostasis. An organism would, therefore, be any animal, plant, fungus, protist, bacterium, or archaeon on earth. These organisms may be classified in various ways. One of the ways is by basing upon the number of cells that make it up. The two major groups are the single-celled (e.g. bacteria, archaea, and protists) and the multicellular (animals and plants). Organisms can also be classified according to their subcellular structures.To learn more about multicellular refer to:
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Which one of the following is a sodium and calcium feldspar with twinning striations? A) oohoclase B) microcline C) plagioclase D) sanidine
Answers
The answer to your question is C) plagioclase. Plagioclase is a sodium and calcium feldspar that often exhibits twinning striations.
any member of the group of common feldspar minerals known as plagioclase, which typically appears as clear to translucent, glassy, light-colored, brittle crystals. Albite (Ab), or sodium aluminosilicate (NaAlSi3O8), and anorthite (An), or calcium aluminosilicate (CaAl2Si2O8), are combined to produce plagioclase. Between albite and anorthite (the end-members of the series), the two combine to form a continuous chemical range known as a solid-solution series. Pure end-members are blended into intermediate members in a uniform manner. The thin parallel striations shown on some surfaces are the result of repetitive microscopic lamellar albite twinning, which is present in the majority of the crystals of this series.
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The Plagioclase is the correct answer.Thus, option c is correct
One type of feldspar is called pyroclase ((Ca,Na)AlSi3O8). A silicate that includes aluminium. Due to the presence of calcium and sodium, this feldspar differs from the orthoclase variety.
The main mineral in mafic rocks generated under low pressure that contains aluminium is called plagioclase. When a primitive magma cools, it often crystallises first and is the most common feldspar.
Plagioclase, which is rich in calcium, is the first to crystallise because anorthite has a significantly higher melting point than albite does.
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What animal thump their hind legs to warn others of danger?.
Answers
Rabbits thump their hind legs to warn others of danger.
This is because they are prey animals and are always on the lookout for predators. Rabbits have a unique way of communicating with each other, and one of the ways they do this is by thumping their hind legs on the ground.
When a rabbit thumps its hind legs, it sends a warning signal to other rabbits that danger is near.The thumping sound created by rabbits is loud enough for other rabbits to hear and recognize as a warning of danger.
The sound can also be heard by predators in the area, which may cause them to abandon their hunt or move on to another location. Rabbits also have other ways of communicating with each other, including vocalizations, body language, and scent marking.
However, thumping their hind legs is one of the most distinctive ways they warn others of danger.
In conclusion, rabbits thump their hind legs to warn others of danger, and this is an important part of their communication system. This behavior is an adaptation that has helped them survive in the wild by alerting other rabbits to the presence of predators.
The thumping sound is loud and distinctive, making it an effective way to communicate over short distances.
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Which of the following statements correctly matches the scientist to his theory of evolution?
A. Darwin - organism with acquired traits can pass them to offspring
B. Lamarck - organisms with best inherited traits survive and reproduce
C. Lamarck - survival of the fittest
D. Darwin - organisms with best inherited traits survive and reproduce
Answers
Answer:
D
Explanation:
Darwin believed that in the same species some animals have traits that allow them to better survive and these individuals reproduce while the others die out so only the individual with the best inherited traits survives
Which of the following is a density-dependent limiting factor?
a. Disease
b. Drought
c. Heat wave
d. Forest fire
Answers
The following is a density-dependent limiting factor: the disease that is in Option a. The disease is a density-dependent factor that is dependent on the density of the population.
What are the density-dependent factors?There are two types of factors that regulate the population: density-dependent factors and density-independent factors. The density-dependent factors include disease, a shortage of food, etc., and all these negatively affect the density of the population, while the density-independent factors are the heat wave, fire, and drought, which do not depend upon the population density.
Hence, the following is a density-dependent limiting factor: the disease that is in Option a.
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Phase Two: Match neurodevelopmental and neurocognitive disorders term to patient scenarios Patient photo Janet Burk lives at Fairview group home and is unable to perform her activities of daily living independently. She requires close supervision.
Answers
Intellectually Disabled-Profound. So, she requires close supervision.
What about intellectually disabled profound?Delays in development that are significant.It has limited communication skills but can understand speech. Capable of picking up daily habits perhaps learn very basic self-care. In social settings, needs close monitoring. Piaget's Sensorimotor Stage.Four categories—mild intellectual disability, moderate intellectual disability, severe intellectual disability, and profound intellectual disability—are used by experts to group the different types of cognitive impairment.These people need constant monitoring, assistance with self-care, and are unable to live freely. They frequently have physical restrictions and a very restricted capacity for communication.Learn more about intellectually disabled profound here:
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Differentiate between:
Species diversity and ecosystem diversity
Answers
Answer:
Eplanation :spices diversity is the number or variety of species in the world or in a particular region. Ecosystem diversity is the number or variety of ecosystems within a particular area.
Answer:
Species diversity refers to the number of different species that are represented in a given community while ecosystem diversity refers to the variety of different ecosystems within an area.
Which kingdom does a multicellular living organism most likely belong to?
A. Archaea
B. Bacteria
C. Eubacteria
D. Fungi
Answers
Answer:
Multicellular living organism most likely belong to kimgdom : d. fungi
Explanation:
Multicelluler organisms is An organism that consists of two or more cells. All the species of plants, animals, fungi, red algae, green algae, and brown algae are multicellular organisms.
which question is most closely related to the field of biology?
A.) what is the nearest planet to earth?
B.) how do you design a cheaper automobile?
C.) how many planets are there in the solar system?
D.) what is the cause of cancer in mice?
Answers
Answer:
option(D).what is the causes of cancer in mice
Answer:
The Closest question related to biology is D.) What is the cause of Cancer in mice
Explanation:
Electromagnetic radiation with medium wavelengths is called
????
Answers
Answer:
visible light if is medium
How many hydrogen atoms are there in the molecule H2S04?
O A. 1
B. 3
C. 4.
O D. 2
Answers
Answer:
two hydrogen atom
Explanation:
Sulfuric Acid, H2SO4 is a chemical compound made up of two hydrogen atom, one sulfer atom, and four oxygen atoms.