Answers
Answer:
1. Semipermeable membrane
2. Amphipathic and phospholipids
Explanation:
Related Questions
How are chemosynthetic bacteria different from photosynthetic bacteria?
A Chemosynthetic bacteria do not require water B Chemosynthetic bacteria eat tube wormS. C. Chemosynthetic bacteria require intense sunlight
D. Chemosynthetic bacteria do not need light.
Answers
Answer:
D
Explanation:
Chemosynthetic bacteria different from photosynthetic bacteria in that Chemosynthetic bacteria do not need light and the correct option is option D.
Chemosynthetic bacteria are a type of bacteria that can produce their own energy and organic compounds without the use of sunlight. They obtain their energy by oxidizing inorganic substances, such as hydrogen sulfide or methane, and using the energy released from these chemical reactions to synthesize organic molecules.
In contrast, photosynthetic bacteria, including cyanobacteria, use sunlight as a source of energy for photosynthesis. They have pigments, such as chlorophyll, that capture light energy and convert it into chemical energy through a series of biochemical reactions.
Chemosynthetic bacteria can thrive in environments with little or no light, such as deep-sea hydrothermal vents or certain underground ecosystems. They are able to utilize chemical energy sources to sustain their metabolic processes and support their growth and reproduction.
Thus, the ideal selection is option D.
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How is a polar molecule different from non polar molecule
Answers
Polar molecules differ from nonpolar molecules by having positive and negative ends and stronger intermolecular forces of attraction.
Which of the following is the covering of the muscle cell?
Question 6 options:
sarcomere
sarcoplasm
sarcolemma
sarcoplasmic reticulum
Answers
Answer:
sacomere
atau sacoplasmic reticulum
On which continent were fossils of both Glossopteris and Lystrosaurus discovered?
Australia
South America
Antarctica
North America
Answers
Answer:
C. Antarctica.
Explanation:
A Glossopteris typically refers to the largest and well known rank in the classification of seed ferns known as Glossopteridales.
Also, Lystrosaurus refers to the herbivorous rank in the classification of dicynodont therapsids typically originating from the late Permian and early Triassic epochs heavily built animals.
The continent on which fossils of both Glossopteris and Lystrosaurus were discovered is Antarctica.
Fossils are the remains of ancient life forms, which are preserved by natural processes. The fossils can be imprints, shells, and skeletons.
The fossils of Glossopteris and Lystrosaurus were discovered in Antarctica.
Glossopteris is one of the largest and best-known fossils of the seed ferns. The fossil of Glossopteris is important as it shows the evidence in the Permian period that ended 250 million years ago. The fossil of Glossopteris was discovered in Antarctica.
Lystrosaurus is an extinct genus that lived in the Permian and Early Triassic periods. It is a genus of herbivorous dicynodont therapsids. The fossils of Lystrosaurus were found in Antarctica and India.
Thus, the correct answer is Option C.
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Planets that orbit the sun is a gas giant, terrestrial, or dwarf planet.
Answers
Answer:
Terrestrial i think:)
Explanation:
A solar system is made up of a star and the planets that orbit it. Our solar system’s four inner planets—Mercury, Venus, Earth, and Mars—are closest to the sun. They are called terrestrial planets, and are largely composed of rock and metal. The four outer planets—Jupiter, Saturn, Uranus, and Neptune—are gas giants.
it's known that only 9 planets orbit the Sun. There have been many solar system objects that have been discovered recently, but none of them have been classified as planets.
Gas dwarf A low-mass planet composed primarily of hydrogen and helium.
Gas giant A massive planet composed primarily of hydrogen and helium.
Which quantity does a light-vear measure? distance speed time volume
Answers
Answer:
speed is the answer
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Which of the following best describes the formation of the bond shown in Figure 1 ?
А
An ionic bond is formed between a carbon atom of one amino acid and the nitrogen atom of the other amino acid,
B
An ionic bond is formed when the negative charge of an OH group is balanced by the positive charge of a hydrogen ion.
с
A covalent bond is formed between a carbon atom and a nitrogen atom along with the formation of H2O
D
A covalent bond is formed that replaces the hydrogen bond between the OH group and the H atom,
Answers
A covalent bond is formed between a carbon atom and a nitrogen atom along with the formation of H2O.
HOW PEPTIDE BOND FORMS:
Peptide bond is a bond that forms when two amino acids comes together. It involves the fusion of the amino group of one amino acid (NH2) and carboxyl group of another (COOH) with the release of water (H2O). Peptide bond is a type of covalent bond because it involves sharing of electrons between a carbon atom (C) and a nitrogen atom (N).Therefore, in the reaction shown in the image attached, a covalent bond is formed between a carbon atom and a nitrogen atom along with the formation of H2O.
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Which correctly lists the three main ocean zones
Deep neritic surface
Intertidal deep surface
Neritic intertidal open ocean
Open ocean deep continental
Answers
They are the intertidal zone, neritic zone, and oceanic zone.
intertidal zone neritic zone and oceanic zone.
Explanation:
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Which chemicals are major contributing to ozone layer destruction?
Answers
Answer:
Chlorofluorocarbons (CFCs) and other halogenated ozone-depleting substances (ODS) are mainly responsible for man-made chemical ozone depletion. The total amount of effective halogens (chlorine and bromine) in the stratosphere can be calculated and are known as the equivalent effective stratospheric chlorine (EESC).
Organisms can form several types of symbiotic relationships. From the descriptions, determine if each of the symbiotic relationships is an example of commensalism, mutualism, or parasitism. 1. Hermit crabs protect themselves from predators by living in shells discarded by snails. 2. Ticks attach to humans in order to eat human blood. Ticks can also infect humans with Rocky Mountain spotted fever and Lyme's disease. 3. The coralroot orchid is a reddish color and is unable to photosynthesize. These orchids take carbohydrates from pine trees through connections formed between their roots and the roots of the pine trees. 4. The bullhorn acacia grows special tissues in which ants live. The ants find a safe place to live and attack any animals that attempt to graze on the acacia. 5. The Leucochloridium worm infects snails and is able to control the snail's behavior, creating a zombie-like snail. The worm forces the snail to attract predators to itself so that the worm is eaten and passed to its next host. 6. On the Galapagos Islands, there are finches that remove parasitic insects from tortoises. The finches gain a meal and the tortoises are ridded of parasites. 7. Cattle egrets follow cattle and other large grazing animals and eat the insects stirred up by cattle's hooves.
Answers
Answer:
From the questions, here are the answers.
1 is commensalism
2. Parasitism
3. Parasitism
4. Mutualism
5. Parasitism
6. Mutualism.
7.Commensalism
Explanation:
Hermit crabs protect themselves from predators by living in shells discarded by snails and Cattle egrets follow cattle and other large grazing animals and eat the insects stirred up by cattle's hooves relationship is commensalism because commensalism is a symbiotic relationship that take place between two organisms in which one benefits and the other is neither harmed or does not benefit. Hermit crabs benefit by receiving protection from snail shells and snail does not benefit and not harmed. Cattles eagret feed on insects on cattle hoolves, cattle is not harmed or does not benefit
Parasitism
2. Ticks attach to humans in order to eat human blood. Ticks can also infect humans with Rocky Mountain spotted fever and Lyme's disease. 3. The coralroot orchid is a reddish color and is unable to photosynthesize. These orchids take carbohydrates from pine trees through connections formed between their roots and the roots of the pine trees and The Leucochloridium worm infects snails and is able to control the snail's behavior, creating a zombie-like snail. The worm forces the snail to attract predators to itself so that the worm is eaten and passed to its next host are parasitism relationship because parasitism is a relationship that exists between two organisms in which the other called the predator infect , harm or cause damage to the host organism. The above are parasitism relationship because they cause damage to their host.
Mutualism
The bullhorn acacia grows special tissues in which ants live. The ants find a safe place to live and attack any animals that attempt to graze on the acacia and On the Galapagos Islands, there are finches that remove parasitic insects from tortoises. The finches gain a meal and the tortoises are ridded of parasites exhibit mutualism relationship because mutualism is a symbiotic relationship that exists between two organisms in which both benefits from the relationship. The Acasia and the ants receive protection from the relationship. The finches and tortoise benefited from their relationship.
Match the definition/description with the correct term.
A. Character displacement B. Competitive exclusion
principle
C. Ecological niche ` D. Fundamental niche
E. Realized niche F. Resource partitioning
1. When two species compete for exactly the same resources (oroccupy the same niche), one is likely to be moresuccessful.One species outcompetes the other and eventually the secondspecies is eliminated
2. Some species coexist in spite of apparent competition for the sameresources. Closer study reveals that they occupy slightly different niches; dividing up the resources by pursuing slightly different resources or securing resources in slightly different ways.
3. Five species of warblers coexist in spruce trees by feeding on insects in different regions of the tree and by using differing feeding behaviors to obtain the insects
4. Niche shift
5. As a result of resource partitioning, certain characteristics may enable individuals to obtain resources in their partitions more successfully. Selection of these characteristics (or characters) reduces competition with individual in other partitions and leads to a divergence of features.6. Two species of finches that live on two different islands have similar beaks, both suited for using the same food supply (seeds). On a third island, they coexist, but due to evolution, the beak of each bird species is different. This minimizes competition by enabling each finch to feed on seeds of a different size.
7. The resources a population uses in the absence of competitors or under ideal circumstances
8. The sum total of the organismâs use of the biotic and abiotic resources in its environment
9. The resources a population actually uses
Answers
Answer and Explanation:
A. Character displacement: This refers to the change of a trait or characteristic. Two species that share the same space must develop different characteristics in order to reduce competition and make better use of resources.
5. As a result of resource partitioning, certain characteristics may enable individuals to obtain resources in their partitions more successfully. The Selection of these characteristics (or characters) reduces competition with individuals in other partitions and leads to a divergence of features.
6. Two species of finches that live on two different islands have similar beaks, both suited for using the same food supply (seeds). On a third island, they coexist, but due to evolution, the beak of each bird species is different. This minimizes competition by enabling each finch to feed on seeds of a different size.
B. Competitive exclusion principle: The competitive exclusion principle establishes that two or more species that share the same niche requirements and are in biological competition for the same resources, won´t be able to coexist indefinitely in the same space if the other ecological factors are constant. When the superior competitor occupies entirely the inferior competitor´s fundamental niche, the superior species has advantages over the other species and monopolizes all the resources. At this point, the inferior species is displaced and must adapt to use other resources changing its behavior, or must migrate to another area where it can get access to its needs, or get extinct.
1. When two species compete for exactly the same resources (or occupy the same niche), one is likely to be moresuccessful.One species outcompetes the other and eventually, the second species is eliminated
C. Ecological niche: The ecological niche is the synthesis of all the environmental factors that influence the growth, survival, and reproduction of species. These factors also include the interaction between species.
8. The sum total of the organismâs use of the biotic and abiotic resources in its environment
D. Fundamental niche: The fundamental niche refers only to physic conditions in which a species can live and survive in the absence of any interaction with other species.
7. The resources a population uses in the absence of competitors or under ideal circumstances
E. Realized niche: The realized niche refers to the restricted conditions in which a species can live and survive as a result of environment physic characteristics and the interaction with other species.
9. The resources a population actually uses
F. Resource partitioning: Resources partitioning refers to one dominant species monopolizing the resources, and the other inferior species use other resources -partially or completely-, migrates or get extinguished. A way in which species can divide resources is by living in different habitat areas. These species might eat the same food, and can roost in different places within the habitat. This resource partitioning and differentiation in the function of their physic location allows both species to coexist more effectively.
2. Some species coexist in spite of apparent competition for the same resources. A Closer study reveals that they occupy slightly different niches; dividing up the resources by pursuing slightly different resources or securing resources in slightly different ways.
3. Five species of warblers coexist in spruce trees by feeding on insects in different regions of the tree and by using differing feeding behaviors to obtain the insects
Which of the following best describes the process by which gas from the atmosphere is obtained by plants and used to build lipids?
A
Gas is fixed by plants as part of the sulfur cycle.
B
Gas is fixed by plants as part of the nitrogen cycle.
C
Gas is directly obtained by plants as part of the carbon cycle.
D
Gas is directly obtained by plants as part of the magnesium cycle
Answers
Answer:C
Explanation:They use energy from the sun to chemically combine carbon dioxide with hydrogen and oxygen from water to create sugar molecules.
The process by which gas from the atmosphere is obtained by plants and used to build lipids is best described by option C (Gas is directly obtained by plants as part of the carbon cycle).
The carbon cycle is the process that brings about the circulation of carbon compounds in nature.
Carbon exists in nature as the gas carbon dioxide which makes up 0.03% of air.
The plants uses carbon dioxide in a process called photosynthesis to manufacture their own food (glucose).
Excess glucose produced by plants, are converted to substances such as starch and lipids, which are then stored in various parts of plant.
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What two body parts must be cleaned before food preparation
Answers
Answer:
hand and arms
Explanation:
Wet hands with running water, (at least 1000F)
Apply soap.
Vigorously scrub lathered fingers, fingertips, and between fingers. And scrub hands & arms for at least 10-15 seconds.
Rinse under clean running water.
Dry clean hands/arms.
Hands and arms must be cleaned before food preparation. Thus option B is correct.
what is personal hygiene for food preparation ?Good personal hygiene can prevent food poisoning.
Bacteria that cause food poisoning can be found in anyone, even healthy people. If you touch your nose, mouth, hair or clothes before touching the food, you can transfer germs from yourself to the food.
Washing your hands well can reduce the risk of contaminating food with bacteria.
Wash your hands with warm water and soap, and don't forget the backs of your hands and wrists, between your fingers and under your nails.
Dry hands well immediately after washing. Always dry your hands with a clean towel or disposable paper or under a dryer.
Therefore, we must keep our hands and arms clean before food preparation. Thus, option B is correct.
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Your question is incomplete, but most probably full question was,
What two body parts must be cleaned before food preparation?
A. Hands and face
B. Hands and arms
C. Arms and face
D. Arms and ears
what is one function of proteins
Answers
Answer:
It helps repair and build your body's tissues, allows metabolic reactions to take place and coordinates bodily functions.
Explanation:
Explain what happens to the body temperature of the rattlesnakes as day turns to night
Answers
[tex]\huge\bold\red{Answer}[/tex]
It bears repeating that reptiles potentially dangerous to man account for only a small proportion of Nevada’s herpetofauna. Of the twenty-five snake species found here, only the six rattlesnakes pose any possible threat. Similarly, of twenty lizard species native to Nevada, only the Gila monster is venomous. The vast majority of reptiles found in Nevada (and elsewhere) are completely harmless!
I HOPE IT HELPS❤Which geologic process most likely caused the formation of the Mount St. Helens Volcano?
transform faults
rift zones
diverging boundaries
converging boundaries
Answers
Which scenarios is the best example of positive feedback?
Answers
Explanation:
As Body temperature decreases, your body begins to shiver and you begin to sweat.
please follow meIdentify the characteristics of a virus
Answers
The graph shows the change in temperature of a sample of water in a closed system as thermal
energy is added over time.
150°C -
100°C
Temperature (°C)
50°C
0°C-
-50°C
10
50
60
20 30 40
Time (min)
What happens to the temperature of the water when it begins to melt?
Answers
Answer:
When you heat ice, its temperature rises, but as soon as the ice starts to melt, the temperature stays constant until all the ice has melted.
According to the graph, the temperature of the water continues to increase during the change of state. Thus, the correct option for this question is A.
What will happen if the ice melts?When the ice melts, the level of seawater would tend to be increased. This is because solid ice has tended to change its state to liquid. And now liquid may increase the density of the seawater which ultimately rises its level.
It is noted that when the temperature reaches that 0°C. For some instances of time, it will remain the same, but as time passes it tends to increase. The same principle is seen when the temperature reaches 100°C. So, it can not be said that the temperature remains at 0°C or 100°C until the changes in state.
Therefore, the temperature of the water continues to increase during the change of state. Thus, the correct option for this question is A.
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1. Compare and contrast internal fragmentation and external fragmentation. Explain the circumstances where one might be preferred over the other.
Answers
Answer:
Explanation:
Internal fragramentatoin is a form of fragmentation that occur when a process required extra or more space compared to the size of the memory block which is allotted and it is fixed . In order words it indicates that the process uses little space.
External fragmentation is a process that occur when the allotted memory size occur in different variable sizes.
Internal fragmentation is majorly used over external fragmentation when a process required more space than the allotted memory block size.
And external fragmentation is preferred over internal fragmentation when a process is detached or reduced from actual memory.
What is the ozone layer?
A. thin layer in the lower atmosphere that protects Earth from ultraviolet rays
B. thin layer in the upper atmosphere that protects Earth from ultraviolet rays
C. thin layer in the upper atmosphere that protects Earth from supersonic rays
D. thin layer in the lower atmosphere that protects Earth from supersonic rays
v
Answers
Hello.
The answer here would be the answer A. The Ozone layer is a thin layer (located in the Stratosphere) in the lower atmosphere that protects the Earth from ultraviolet rays by absorption
which branch of science is related to the study of matter and energy
Answers
Physics – branch of science that studies matter and its motion through space and time, along with related concepts such as energy and force. Physics is one of the "fundamental sciences" because the other natural sciences (like biology, geology etc.)
A student uses paper towels to clean up a small chemical spill in the lab. Where should the dirty paper towels be placed?
Answers
Answer:
The dirty paper towel should be placed in the trash can that is for chemicals and other things that are not healthy for the environment.
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Microevolution is changes in the frequency of genes in a gene pool. According to this definition what is the smallest biological unit that can evolve?
Answers
population
The smallest biological unit that can evolve is population.
In order words, population is the smallest unit of living organisms that can undergo evolution.
What is population?Population can be defined as a group of living organisms of the same species interbreeding together in a particular area or environment
So therefore, the smallest biological unit that can evolve is population.
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which one of the following is not an organic molecule found in living organisms?
Answers
Answer:
Well you weren't very clear, there were no answer choices. But If I had to say I would say, sodium Chloride. Organic compounds are proteins, nucleic acids,carbohydrates, and lipids. Sodium chloride is none of these, therefore it's the answer. I apolagize if i am wrong, It was slightly unclear. I might be wrong do not take my word, if you are unsure.
The correct answer is that minerals are not organic molecules found in living organisms. While they play important roles in biological processes and are required for the proper functioning of the body, they are considered inorganic substances. The last option is correct.
In living organisms, organic molecules are essential for various biological processes. They are composed primarily of carbon atoms bonded with other elements such as hydrogen, oxygen, nitrogen, and sometimes sulfur and phosphorus. Organic molecules found in living organisms include carbohydrates, proteins, and lipids. Carbohydrates are a class of organic molecules that serve as a primary source of energy. They are made up of carbon, hydrogen, and oxygen atoms and are found in various forms, including sugars, starches, and cellulose. Carbohydrates play crucial roles in energy storage and provide structural support in cells and tissues.
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complete question is below
which one of the following is not an organic molecule found in living organisms?
a.carbohydrates
b.proteins
c.lipids
d.minerals
How does cellulose affect the cell wall in plants?
a)Cellulose is the material used to keep the cell wall rigid.
b)Cellulose allows water to pass through the cell wall.
c)Cellulose allows light to pass through the cell wall.
d)Cellulose prevents water loss in plants.
Answers
I am pretty sure this is correct. As the secondary cell wall is thicker then the first. But it contains cellulose which Helps to increase the rigidity of the cell wall.
Answer:
a)Cellulose is the material used to keep the cell wall rigid.
Explanation:
Which of the following statements correctly describes some aspect of protein excretion in prokaryotic cells? a Prokaryotes are unlikely to be able to excrete proteins because they lack an endomembrane system. b The mechanism of protein excretion in prokaryotes is probably the same as that in eukaryotes. c Proteins that are excreted by prokaryotes are synthesized on ribosomes that are bound to the cytoplasmic surface of the plasma membrane. d In prokaryotes, the ribosomes that are used for the synthesis of secreted proteins are located outside of the cell. e Prokaryotes contain large pores in their plasma membrane that permit the movement of proteins out of the cell.
Answers
Answer:
The correct answer is option c "Proteins that are excreted by prokaryotes are synthesized on ribosomes that are bound to the cytoplasmic surface of the plasma membrane".
Explanation:
Many prokaryotes secrete proteins, particularly, extracellular enzymes that have a function outside the cells and toxins that are not needed by the cell. As any other protein, proteins that are excreted by prokaryotes are synthesized on ribosomes that are bound to the cytoplasmic surface of the plasma membrane. However, excreted proteins go to the general secretion (Sec) pathway, where they are tagged and further processed.
Read each question carefully. Write your response in the space provided for each part of each question. Answers must be written out in paragraph form. Outlines, bulleted lists, or diagrams alone are not acceptable and will not be scored.
The diagram shows water molecules as solid ice at 0°C
and as a liquid at 25°C.
Answers
The complete question is as follows:
The diagram shows water molecules as solid ice at 0°C and as a liquid at 25°C. Explain why the arrangement of water molecules is different in ice and water.
Answer:
In low temperatures, hydrogen bonds between water molecules become stable as a result of the movement of these molecules are slow in low temperature which leads to the crystalline form of water due to hydrogen bond. This crystalline form is ice.
on the other hand at a higher temperature water molecules found in liquid form due to the faster and rapid movement of water molecules as hydrogen bonds keep breaking and forming in this setting.
How can a change in technology affect scientific knowledge?
O It makes instruments cheaper to produce and buy.
O It makes vaccines quicker and cheaper to produce.
It reduces the time that is needed to make new discoveries.
O It leads to changes in existing scientific information.
Answers
Answer:
(D)
Explanation:
Credit to isaacazamora for the answer, I'm just making it easier to see.
A change in the technology affects the scientific knowledge because it leads to changes in the existing scientific information. Thus, the correct option is D.
What is Scientific knowledge?Scientific knowledge refers to a generalized body of all the laws and theories used to explain a phenomenon or the behavior of interest which are acquired using the scientific methods. The laws are observed patterns of the phenomena or behaviors which are observed, while theories are systematic explanations of the underlying phenomenon or behavior of something.
A change in the technology can affect scientific knowledge through opening up a new branch of the scientific investigation. The invention of the microscope enabled many biologists to study living organisms which are invisible to the unaided eyes and thus also gave birth to the science of microbiology.
Therefore, the correct option is D.
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In which of the following cases does an object posses potential energy.
1. A moving bus
2. Water flowing in a river
3. A moving football
4. A stretched rubber band
this is physics question
Answers
Answer:
a stretched rubber band