Answer:
Food prevention is to stop or slow down the spoilage of food,
loss of quality and edibility of food for longer time.
METHODS OF FOOD PRESERVATION
CANNING: this involves cooking the food in special oil or paste and packing it in air tight cans under strict hygiene.REFRIGERATION: this involves storing the food at a temperature below 0°c. This renders bacteria and other decay causing agents inactive1) Indicar a qué nivel de organización de la materia corresponden las siguientes palabras (Ayuda: hay uno para cada uno, no se repiten) a- HIDRÓGENO b- JAURÍA c- EUCARIOTA d- SER HUMANO e- PROTÓN f- RESPIRATORIO g- SERES BIÓTICOS+ ABIÓTICOS Y SUS INTERRELACIONES h- MITOCONDRIA i- PULMÓN j- SER HUMANO +BANDADA+ PASTIZAL+ CARDUMEN k- EPITELIO l- H2O (agua) m- ESFERA DE VIDA
Respuesta y explicación:
e- PROTÓN - nivel subatómico, integrado por las partículas que componen los átomos: protones, neutrones y electrones.
a- HIDRÓGENO - nivel atómico, compuesto por átomos, que son partículas que interactúan con otras mediante reacciones químicas. Ejemplo: hidrógeno, oxígeno, carbono.
l- H2O (agua) - nivel molecular. El agua es una molécula que se forma gracias a la interacción entre dos átomos de Hidrógeno y uno de Oxígeno. Otros ejemplos de moléculas son: cloruro de sodio (NaCl) o el dióxido de carbono (CO2).
h- MITOCONDRIA - nivel de organelas celulares, compuesto por distintos orgánulos que se encuentran dentro de las células y llevan a cabo diferentes tareas, todas importantes para el correcto funcionamiento celular. Otros ejemplos de organelas son: retículo endoplasmático y lisosomas.
c- EUCARIOTA - nivel celular. Tanto las células eucariotas, que poseen núcleo y sistema de endomembranas, como las procariotas, que carecen de éstos recién mencionados, son los dos tipos de células presentes en los organismos vivos.
Los siguientes tres niveles sólo corresponden a organismos pluricelulares.
k- EPITELIO - nivel de tejidos. Los tejidos están compuestos por distintos tipos de células que trabajan juntas para llevar a cambio una función en específico, sea protección, transporte o contracción. Otros ejemplos de tejidos son el nervioso y el muscular.
i- PULMÓN - nivel de órganos. Los órganos están formados por distintos tejidos que convierten a estas estructuras en unidades funcionales de gran importancia para los seres vivos superiores. Otros ejemplos son: ojo y vejiga.
f- RESPIRATORIO - nivel de sistema de órganos. Los sistemas de órganos están integrados por diferentes órganos. Ejemplos de sistemas de órganos son: sistema digestivo y sistema reproductor.
d- SER HUMANO - nivel de organismo. Compuesto por todas las células, tejidos, órganos y sistemas que posea, en caso de ser pluricelular, o por la única célula que posean en caso de ser unicelulares. Otros ejemplos son: helicobacter pylori (bacteria), gallina, algas.
b- JAURÍA - nivel de población, se refiere a un conjunto de individuos de la misma especie, como podrían ser humanos, perros (jauría), o peces (cardumen).
j- SER HUMANO + BANDADA + PASTIZAL + CARDUMEN - nivel de comunidad o biocenosis. Este nivel está integrado por las distintas poblaciones que comparten un mismo entorno. Una comunidad de animales se la conoce como zoocenosis, mientras que una de vegetales se llamará fitocenosis.
g- SERES BIÓTICOS + ABIÓTICOS Y SUS INTERRELACIONES - nivel de ecosistema, integrado por todos los seres vivos (bióticos) e inertes (abióticos) que comparten un medio físico, y las relaciones entre estos.
m- ESFERA DE VIDA - nivel de biósfera, compuesto por todos los ecosistemas.
Geneticists studying the gene for lactase did not find any differences in the coding region DNA (the section of DNA with instructions to make the protein) between people who could digest lactose and people who could not digest lactose. After they investigated further, they discovered that the difference between lactose tolerant and intolerant individuals was due to a mutation located in
Answer:
Explanation:
They discovered that the difference between lactose tolerant/persistence and intolerant individuals was due to a mutation located in another neighbouring gene that controls its persistence.
This gene is the MCM6 gene. This gene affects lactase promoter activity likely causing lactase persistence. It is located in a regulatory region upstream of the lactase (LCT) gene.
Any 2 differences between tap root and fibrous roots system.
Answer:
Taproot penetrates deep into the soil, while a fibrous root is shallow and does not penetrate as deeply.
A taproot is the differentiated primary root of the plant, while the fibrous root is not the differentiated primary root of the plant.
Answer:
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DNA is the genetic material that makes up living things, and folic acid plays an important role in the formation of DNA. Jon wants to study the effect of folic acid on DNA formation in microbes. Which statement accurately describe the variables in this study?
A.
The amount of folic acid and DNA synthesized are both dependent variables.
B.
The amount of folic acid and DNA synthesized are both independent variables.
C.
The amount of folic acid is the independent variable, and the DNA synthesized is the dependent variable.
D.
The amount of folic acid is the dependent variable, and the DNA synthesized is the independent variable.
E.
The amount of folic acid and DNA synthesized are neither dependent nor independent variables
Answer:
C
Explanation:
C:
Answer:
C
Explanation:
c
Brendan is 6 feet tall and has red hair and green eyes. His cousin, Connor, is 5 feet, 6 inches tall, and has brown hair and brown eyes. Both boys are described as friendly and outgoing. These descriptions of genetic expression are known as their
Answer:
Phenotypes
Explanation:
Phenotypes are the characteristics of an animal or human, which we can see and observe. Thus, Brenden and Connor's characteristics can be observed an can see.
I hope this helps.( Plus, I'm bad at good English grammar)
5 feet
but I really need with my so can anyone help me? I'm only on unit two with 2 days left PLEASE !!!
Louis Pasteur proved that all new cells come from preexisting ones. What
concept did Pasteur's experiments disprove?
A. Germ theory
B. Cell theory
C. Spontaneous generation
D. Virchow's postulates
Answer:
Virchow s postulates
.
Explanation:
The major difference between Earth and the other planets in our solar system is that _____.
Answer:
Earth is the only planet with liquid water readily avaible to and able to support living organisms.
Explanation:
Answer:
Earth has an atmosphere
Explanation:
Took the exam
Which is not a way that ATP is used for mechanical work?
Movement at the cellular level.
Muscle contractions
Movement of the flagellum
Joining monomers to form a polymer
Answer:
Joining monomers to form a polymer
Explanation: because monomers and polymers are what make up a fiber whereas ATP ( Adenosine triphosphate) is the energy currency of a cell.
What is homeostatis and how it is occured in plants
Answer:
the property of living organisms in which they keep their internal systems in balance is called homeostatis. In desert regions, plants have reflective surfaces making them cool, they have several adaptation skills like cactus, where its leaves are spines to reduce transpiration. This happens due to the property homeostatis.
Answer:
Homeostasis is the property of living organisms in which internal systems are kept in balance.
Explanation:
Plants stay cool in the desert heat through their reflective surfaces, reduced leaves, or leaves that are parallel to the sun. Desert plants may also have adaptations that help them store water or very deep roots.
i. In which structure does photosynthesis take place? [2 marks] ii. Name the substance in chloroplasts which absorbs light. [2 marks] iii. Through which structure does carbon dioxide enter the diagram? [3 marks] iv. What role does sunlight play in photosynthesis? [3 marks]
Answer:
1. Photosynthesis takes place in the chloroplasts.
2. This substance is called chlorophyll.
3. Structure G (Stoma)
4. Sunlight provides energy (light energy) to the chloroplasts for photosynthesis to take place.
In algae and plants, photosynthesis happens in the... vacuoles. mitochondria. chloroplasts. chromosomes.
Answer:
chloroplasts
Explanation:
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dont keep wrong answers
Answer:
egg,fish,meat= protein
potato,maize ,barley,turnip= carbohydrates
ghee ,butter ,animal fat=fats
all vegetables and fruits = vitamins
calcium, magnesium, iodine=minerals
etc......
The term that describes placing the thumb of one hand inside the mouth and the index and third finger of the other hand outside the mouth, and gently feeling the tissues for any lumps or abnormalities is:
Answer: PALPATION.
Explanation: Palpation is one of the the ways of physically examining an individual,it involves using one's fingers to examine the organs of the body to note any abnormality.
This is achieved by touching and feeling the the body inorder to determine the location,size,consistency or firmness, shape, tenderness and the texture of a body organ or to get the location of pain.
Palpation is mainly employed in physical examination of the abdomen and it can serve as a diagnostic approach to ascertain the presence of a disease condition or injury.
Palpation can be deep palpation (4-5cm) to feel internal organs of the body and to note any mass or tumour or light palpation(1-2cm) to feel surface abnormalities.
Answer:
palpation
Explanation:
The correct answer would be palpation.
Palpation is a medical term that generally refers to the process of using fingers to diagnose diseases or identify body abnormalities.
By using the sense of touch, different characteristics of the body region are assessed and the information is collated and critically examined to arrive at a diagnosis.
Palpation can be conducted using the fingertips, the finger and the thumb, the back of the finger and the hands, the side of the hands, or the front of the fingers
Select the correct answer from each drop-down menu. Alma is walking in a park. Suddenly, a wild dog charges toward her. Alma is frightened. The starts to respond by increasing her heart rate and dilating her pupils. After running for a few minutes, Alma realizes that the dog has fallen far behind. At this point, her starts working to relax her body by slowing down her heart rate and constricting her pupils.
Answer:
sympthetic nervous sytem and parasympathetic nervous system
Explanation:
A threat stimulus, such as the sight of a predator, triggers a fear response in the amygdala, which activates areas involved in preparation for motor functions involved in fight or flight. It also triggers release of stress hormones and sympathetic nervous system.
The sympathetic nervous system doesn't destress the body once the tree is felled or the danger has passed. Another component of the autonomic nervous system, the parasympathetic nervous system, works to calm the body down, according to the Clinical Anatomy of the Cranial Nerves, published in 2014 by Academic Press
Sympathetic and parasympathetic nervous system which are forms of autonomic nervous system.
What is nervous system?The primary function of the nervous system, which is a network of neurons, is to generate, modulate, and transmit information between the various parts of the human body. The regulation of vital body functions, as well as sensation and body movement, are all made possible by this property.
The sensory system is comprised of the mind, spinal string and nerves. It has a significant impact on your thoughts, feelings, and physical actions. You can walk, speak, swallow, breathe, and learn thanks to it. Additionally, it directs the body's emergency response. Sympathetic and parasympathetic nervous system which are forms of autonomic nervous system.
Therefore, sympathetic and parasympathetic nervous system which are forms of autonomic nervous system.
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What can a extermley low protein diet cause
Answer:
When nutritional protein is in brief supply, the frame tends to take protein from skeletal muscles to keep more important tissues and frame functions. As a result, lack of protein ends in muscle losing over time. ... Loss of muscle tissues is one of the first signs of inadequate protein intake.
Explanation:
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What can you surmise from the labeled image? The genotype is heterozygous. White petal color is a recessive trait. White petal color is a dominant trait. The phenotype is heterozygous. Mark this and return
Answer:
White petal color is a recessive trait.
Explanation:
Further explanation is posted as an attached file due to technical difficulties.
Answer:
The answer to this question is B.)White petal color is a recessive trait.
Explanation:
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which part of earth belongs to the geo sphere?
A) air
B) plants
C) minerals
D) water
Answer:
Minerals are part of earth's geo sphere.
Describe how you would carry out sampling with a pitfall trap. State how you would reduce the risk of harm to capture organisms.
Answer:
Explanation:
Pitfall trapping is a sampling technique that is widely used to examine species ... Solutions such as formalin are used in wet pitfall traps because they preserve the ... stone or other object to keep out predators and prevent trapped animals from ... however, can pose a significant by-catch risk to small non-target vertebrates ...
An organism is found that has the following traits:
• Has multicellular filaments
• Decomposes plants
• Lives in a moist environment
What kingdom does this organism most likely belong in?
O A. Animalia
O B. Plantae
O C. Protista
O D. Fungi
Answer:
D. Fungi
Explanation:
All of the traits listed relate to fungi.
Which would be an adaptation in a rainforest, but NOT in a desert? A: Skin that blends in with green plants B: Better eyes for hunting prey C: Ability to store water for a long time (Obviously not the answer) D: Very small leaves to trap water
Answer: A: Skin that blends in with green plants
Skin that blends in with green plants is an adaptation in a rainforest, nut not in a desert. Thus, the correct option is A.
What are rainforest adaptations?Some of the most common animal adaptations in the rainforest include camouflage. This adaptation is much like soldiers in the army wear camouflage to blend in with their outside environment, animals use camouflage to move around the rainforest undetected.
Rainforest plants show adaptations which help them to survive better including the shallow root systems which enable them to obtain more moisture and tap into the rich supply of nutrients which are available from rotting plants and animal materials in the upper soil layer of the forests. The leaves of the rainforest trees have special adaptations and are noticeably different from that of eucalyptus leaves.
Therefore, the correct option is A.
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During ecological succession, why is one type of tree that is short get replaced by taller
tree types?
Answer:
change in environment
Explanation:
During ecological succession, short type of tree get replaced by taller tree because the environment is in favor of the taller trees. The suddenly and drastically change that occurs in an ecosystem is the main reason for ecological succession. In this ecological succession, the old species becomes vanished and replace by new species which has the ability to survive in that changed environment. The short type of tree get replaced by taller tree because the shorter trees did not get sunlight and nutrients from the soil so tall trees takes their place. The tall trees are more competitive that short trees.
Parents that are heterozygous for having freckles (dominant) are crossed. Which correctly describes their offspring?
where dose a fertilized egg attach
Answer:
The answer are given above in attachment.
Which of the following best describes fertile soil, precipitation, and sunlight?
A. Biotic factors in the grassland
B. Biotic factors in a forest
C. Abiotic factors in the grassland
D. Abiotic factors in a forest
Answer:
C. Abiotic factors in the grassland.
Explanation:
Sunlight, soil, and percipitation are all nonliving things, so they are abiotic. Sunlight, soil, and percipitation could be found in forrests or grasslands, but are usually found in grasslands.
Read each example and decide what the resulting effect on the gene pool of that population would be.
A zebra migrates to join a different herd of zebras.
Competition for sunlight leads to taller trees.
The DNA of a snake changes to make its venom stronger.
A grassfire randomly sweeps through a population of buffalo
and kills most of the animals.
Answer:
Read each example and decide what the resulting effect on the gene pool of that population would be.
✔ brings new alleles from other populations
A zebra migrates to join a different herd of zebras.
✔ favors certain alleles
Competition for sunlight leads to taller trees.
✔ creates new alleles from DNA
The DNA of a snake changes to make its venom stronger.
✔ randomly selects alleles
A grassfire randomly sweeps through a population of buffalo and kills most of the animals.
Explanation:
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Options are :
zebra migrates - bringing new alleles competitions of sunlight - favor certain alleles.Why do zebra migrate to different herds?The Zebra being a migrating animal migrates to different herd as it beings newer alleles from other populations.
The competition for sunlight leads to taller trees that may favor certain alleles. The DNA of snake changes to make it venomous may create new alleles from DNA. The grassfire swept by buffalo is a randomly selects alleles.
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How deep in the ocean must a current be to be classified a deep current?
A. 250 m
B. 100 m
C. 400 m
D. 1000 m
Answer:
c. 400m
Explanation:
Which of the following is the best definition of a scientific theory?
A.
a broad, well-supported explanation of related observations or events
B.
a highly tentative statement about the natural world that is likely to be significantly changed or discarded
C.
a plausible answer to a scientific question that is used to guide research
D.
a description of a natural phenomenon that is always observed to occur under specific conditions
Answer:
B
Explanation:
noun. a coherent group of propositions formulated to explain a group of facts or phenomena in the natural world and repeatedly confirmed through experiment or observation: the scientific theory of evolution
After getting the slide and microscope ready, Stella is eager to see the microscopic pond water specimen! She crouches around her microscope and aligns her eye with the microscope’s eyepiece. But she's only able to see a bright white light. At this point, no specimens or cells are visible on Stella's pond water slide. After taking a moment to collect her thoughts, Stella realizes she can't see any lifeforms because a.there are no specimens on the slide b.the microscope is not plugged in. c.she hasn't fastened the slide to the stage. d.the microscope is not yet in focus
Copied but correct answer.
Answer: C (She hasn't fastened the slide to the stage
Explanation:
In Microscopy even if the slide is not yet in focus,she will be able to see part of the slide which may appear as transparent image.Therefore this is a wrong answer.
If the microscope is not plugged it light can not come up.
If there are no specimen on the slide,the slide will still as transparent image at the focus.
No doubt Stella forgot to fasten the slide to the stage.,therefore the specimen on the slide was not in focus of the objective lens,rather she was focusing on the stage only,hence the visible white light.
Stella can not able to see any life forms in the microscope because she hasn't fastened the slide to the stage. Thus, the correct option is C.
What is Microscope?A Microscope may be defined as an instrument that constructs an enlarged image or view of a small object, thus illustrating details too small to be seen by the unaided eye.
If the microscope is not plugged in, Stella will not able to see even white light. If the microscope is not in focus, then Stella is able to see a transparent sheet of fil under it. No specimens also provide a transparent appearance.
But a view of white light indicates that she hasn't fastened the slide to the stage.
Thus, the correct option is C.
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Answer:
B is the correct answer
Explanation:
Which of the following proteins could be used to carry materials throughout the body
Answer:
Option B
Explanation:
This is a type of Ion channels protein receptor which are pore-forming membrane proteins that allow ions to pass through the channel pore.
They always span across the cell membrane allowing passage of ions across the membrane of the cells.