Answer:
a compound containing oxygen that is important to the of living system
Is the following cell a plant of an animal cell? How do you know? Plant cell because there is a cell wall and a chloroplast O Plant cell because there is a large vacuole and a cell wall 0 Animal cell because there is a cell membrane and no chloroplasts O Animal cell because it has a cell wall and a a large vacuole
Answer:
A plant cell contains a large, singular vacuole that is used for storage and maintaining the shape of the cell. In contrast, animal cells have many, smaller vacuoles. Plant cells have a cell wall, as well as a cell membrane. In plants, the cell wall surrounds the cell membrane.
Explanation:
Which of the following occurs during mitosis but
not during meiosis I ?
(A) The chromosomes are pulled to opposite
poles of the spindle apparatus.
(B) The chromatids of each chromosome are
separated.
(C) The nuclear envelope breaks down.
(D) Both synapsis and crossing-over take place.
(E) The diploid number of chromosomes is
reduced to the haploid number.
Answer:
B) The chromatids of each chromosome are separated.
The chromatids of each chromosome being separated doesn't occur in
meiosis I.
Meiosis is a type of cell division that produces four unique daughter cells
as a result of it undergoing two rounds of cell division. It is the cell division
that produces sperm and egg cells.
The meiosis I stage involves the resegregation of the chromosomes in the
diploid cell which has previously undergone division. This then produces
four haploid daughter cells which have unique features.
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Las estructuras que facilitan la union de las venas y arteriasel intercambio gaseosos entre los dintistos tejidos y la sangre que circula se denominan.....
Answer:
Intercambio de oxígeno y dióxido de carbono
Por
Rebecca Dezube
, MD, MHS, Johns Hopkins University
Última revisión completa jun. 2019
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La principal función del aparato respiratorio es inhalar oxígeno y eliminar dióxido de carbono. El oxígeno inhalado penetra en los pulmones y alcanza los alvéolos. Las capas de células que revisten los alvéolos y los capilares circundantes se disponen ocupando el espesor de una sola célula y están en contacto estrecho unas con otras. Esta barrera entre el aire y la sangre tiene un grosor aproximado de una micra (1/10 000 cm). El oxígeno atraviesa rápidamente esta barrera aire–sangre y llega hasta la sangre que circula por los capilares. Igualmente, el dióxido de carbono pasa de la sangre al interior de los alvéolos, desde donde es exhalado al exterior.
La sangre oxigenada circula desde los pulmones por las venas pulmonares y, al llegar al lado izquierdo del corazón, es bombeada hacia el resto del organismo (véase Función del corazón). La sangre con déficit de oxígeno y cargada de dióxido de carbono vuelve al lado derecho del corazón a través de dos grandes venas: la vena cava inferior y la vena cava superior. A continuación, la sangre es impulsada a través de la arteria pulmonar hacia los pulmones, donde recoge el oxígeno y libera el dióxido de carbono.
Intercambio de gases entre las alveolas y los capilares
Para mantener la absorción de oxígeno y la emisión de dióxido de carbono, entran y salen de los pulmones entre 5 y 8 L de aire por minuto, y cada minuto se transfiere alrededor del 30% de cada litro (cerca de tres décimos de galón) de oxígeno desde los alvéolos hasta la sangre, aun cuando la persona esté en reposo. Al mismo tiempo, un volumen similar de dióxido de carbono pasa de la sangre a los alvéolos y es exhalado. Durante el ejercicio, es posible respirar más de 100 L de aire por minuto y extraer de este aire 3 L de oxígeno por minuto. La velocidad de entrada del oxígeno en el organismo es una medida importante de la cantidad total de energía consumida por este. La inspiración y la espiración se llevan a cabo gracias a los músculos respiratorios.
Make a key out of this picture, in other words differentiate between each.
Answer:
They are different due to their colour, number of petals, and shape of petals.
Explanation:
These flowers are different from one another because of their colour, number of petals, and shape of petals. Some flowers are pink in colour, some are white and others are yellow in colour. Some has five petals whereas some has four petals. Some petals of flowers has circular shape, some petals has pointed shape, while others are 'W' shape.
2. Write the complementary DNA strand: (1 points)
CTT GAC TGA TGC
One Multiple Choice (A, B, or C) question and one True/False question.
For probability and permutations and combinations
List 4 viruses and the diseases they cause (1 disease per virus) please help!!!!
The white blood cells in the lungs release protease. Suggest the function of this enzyme in the white blood cells in the lungs.
( Pls don't answer for points. Serious answers only )
Answer: Protease is an enzyme which causes break down of proteins by converting them into smaller polypeptides or amino acids.
Explanation:
Proteases are the enzymes that are necessary for the functioning of the lungs. They cause the regeneration and repair of white blood cells as protease can digest connective tissue elements. They are responsible for generating an inflammation response during infection caused by a pathogen. Thus prevents lung infection. Inhibition of the anti-proteolytic mechanism is essential for the controlling microbial infection and lung inflammation.
Archie Carr helped save turtles from extinction. What did he do during Operation Green Turtle?
A.) He made laws against hunting turtles.
B.) He took turtle eggs to safe beaches.
C.) He cleaned the turtles after an oil spill.
D.) He planted grasses that turtles eat.
Answer:B
Explanation:The project distributed green turtle eggs and hatchlings to various nesting beaches around the Caribbean and the Gulf of Mexico in an effort to encourage the growth of their dwindling populations. His conservation efforts also led him to lead campaigns against ocean pollution.
Multiple Choice
A student observed bees flying between flowers on a squash vine. after researching this activity, the student learns that bees obtain nectar from the flowers. The pollen from the flowers sticks to the bees and is transported to another flower of the same species, resulting in pollination. The student decides this is an example of mutualism. Which table explains why this relationship is mutualism?
Answer:
The answer is D
Explanation:
Flowers and bees both benefit from pollination so D
Answer: that should be d
Explanation:
Meaning of all of these words below (Will be appreciated! I really need help! 30points!!! ^^):
autotroph, heterotroph, producer, consumer, herbivore, carnivore, omnivore, scavenger, ecosystem, population, community, terrestrial ecosystem, marine ecosystem, aquatic ecosystem, biotic factor, abiotic factor, predator, prey, predation, competition, carrying capacity, limiting factor, decomposer
Autotroph: organism that is able to form a neutral organic substances heterotroph: an animal that can't make its own food supply producer: a person, company, or country that makes, grows and supplies goods consumer: a person or thing that eats or uses something herbivor: animal that eats off of plants carnivore: animal that eats meat or skin omnivore: animal that eats both plants and meat scavenger: a person who looks for missing items ecosystem: where organisms call home population: the number of people/living things in one area community: a group of people living around the same place terrestrial ecosystem: group of living organisms living on a land-based area marine ecosystem: under the sea where the salt levels are really high aquatic ecosystem: ecosystem of a body of water biotic factor: a non living part of an ecosystem that shapes an environment abiotic factor: non living physical and chemical elements in the ecosystem predator: an animal hunting for another animal to eat prey: the animal victim of a predator predation: the preying of one animal on others competition: an event or contest that people compete in carrying capacity: a species' average population size limiting factor : anything that is a population size decomposer: an organism that breaks down chemical
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phew that was a lot. I hope you have a great day!!
CTT GAC TGA TGC
3. Transcribe the DNA Strand (answer to previous question) to an mRNA strand:
(2 point)
Answer:
GAA CTG ACG
Explanation:
this will be the complementary DNA strand.
A=T
G=C
C=G
and above you will see the answer key for any DNA strand complementary.
The three domain system resulted in dividing all life into three ____, called ___, ___, and ____.
Answer:
systems
Archaea
Bacteria
Eukarya
Explanation:
The three domain system resulted in dividing all life into three systems, called Archaea, Bacteria, and Eukarya.
Hope this helps! :)
Why do we not use a Punnett Square to determine the offspring for asexual reproduction? Is that form of reproduction diverse? Explain your answer.
Answer: There isn’t another organism to cross with
Explanation:
In asexual reproduction there is only one parent so all the genes come from one person.
Deforestation leads to environmental imbalance. Give reason.
Answer: Well, deforestation is cutting down trees, and many arboreal animals live in those trees. So if they have no proper shelter, they would have no place for personal activities such as breeding, feeding etc. And without those important activities that they have to do everyday, the population of arboreal animals will keep on decreasing until they go extinct. Though that's not the only problem. The herbivores won't get anything to eat, hence not letting the omnivores or carnivores get their food. As you can see, deforestation can create a huge environmental imbalance.
Stem cells in plants are referred to as?
1. merimex
2. meristems
3. stalk stem cells
4. special stem cells
Which of the following is evidence of Continental Drift?
Shape of the continents
Distribution of fossils
Distribution of geological features
All of these
None of these
Answer:
All of these
Explanation:
If you put all of the continents together, they fit like a puzzle. If you look at mountains and match these when they are put together, mountains will be in similar places. The fossils found in Antarctica were fossils from warm climates. That could only be if all continents used to be one!
Which best describes the end result of meiosis?
O A. two diploid cells identical to the parent cell
o B. four haploid cells identical to the parent cell
C. two diploid cells different from the parent cell
D. four haploid cells different from the parent cell
A child has a mass of 30 Kg on earth. If the gravity on the Moon is one sixth that of the earth what is the mass of the child moon
Answer:
30 kilograms
Explanation:
A change in gravity does not affect mass.
Why do siblings always look different from each other even though they have the same parents? *
A. Siblings look exactly the same.
B. This is because there are always random mutations in everyone's DNA.
C. There is no reason, this is just random.
D. Due to meiosis, siblings each get slightly different genetic information from both parents.
which one ^
Answer:
Siblings look different cause of the genetics combining through child creation
Explanation:
I need help with 5 science questions :)
Answer:
1. . For example, lake trout are native to the Great Lakes, but are considered to be an invasive species in Yellowstone Lake in Wyoming because they compete with native cutthroat trout for habitat.
2. Japan
3. Kudzu was introduced from Japan to the United States at the Philadelphia Centennial Exposition in 1876 as an ornamental and a forage crop plant. The Civilian Conservation Corps and southern farmers planted kudzu to reduce soil erosion.
4. Kudzu grows out of control quickly, spreading through runners (stems that root at the tip when in contact with moist soil), rhizomes and by vines that root at the nodes to form new plants. Once established, kudzu grows at a rate of one foot per day with mature vines as long as 100 feet.
5. Pythons compete with native wildlife for food, which includes mammals, birds, and other reptiles. Severe mammal declines in Everglades National Park have been linked to Burmese pythons. ... Raccoons and opossums often forage for food near the water's edge, which is a habitat frequented by pythons in search of prey.
Explanation:
hope this help bae
A student used a microscope to study four members of the phylum Ciliophora. Members of
this phylum move when propelled by hundreds of tiny cilia.
Paramecium
caudatum
Paramecium
aurelia
Os
ALLA
3220
Paramecium
bursaria
Paramecium
multimicronucleatum
VIITTEITA
Although these organisms belong to the same phylum, they are classified as different -
A families
B species
C kingdoms
D orders
Answer:
A
Explanation:
Makes the most sense
Although these organisms belong to the same phylum, they are classified as different families. Thus, option A is correct.
What is family?The family structure that is being described in the description above is step family structure. The step family is being formed by which one family ends with divorce and the individual is likely to get remarried, creating a blended or step family that is associated with two families that are separated.
Family of choice refers to the concept of family is intended to capture the commitment of chosen, not fixed, care and support. A family of choice is also known as chosen family and found family. It is a family that is made up of intentionally by chosing the members for love and support rather than blood. Basically, family of choice is that one in which people chose their member intentionally.
Therefore, Although these organisms belong to the same phylum, they are classified as different families. Thus, option A is correct.
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Which of the following planets has the largest elliptical orbit?
A. Jupiter
B. Uranus
C. Saturn
D. Earth
What type of volcano is pictured below?
composite volcano
shield volcano
strato-volcano
cinder volcano
Answer:
the answer is the shield volcona
disadvantages of pedigree analysis
Are enzymes needed for metabolism?
A. YES!
B. NO!
C. MAYBE SO!
D. ALL OF THE ABOVE (This option clearly makes no sense! Don't pick it!)
Answer:
YES! (Don't mean to yell, but those were the options.)
Explanation:
Enzymes break down food, and therefore, are needed for metabolism.
Which organism is the most closely related to humans? Explain.
Answer:
Chimpanzee
Explanation:
It is the closest to humans
Marine iguanas feed on seaweed. Seaweed contains starch Starch is digested by enzymes in the digestive system. Explain why the shape of an enzyme is important for digestion.
Answer: The enzyme is a catalyst that speed up the rate of the reaction.
Explanation:
The enzyme can be defined as the protein that is involved in the catalytic activity of the reaction. The shape of the enzyme is important as it determines to which substrate it binds to. The enzyme is specific to the substrate and binds to a specific kind of substrate. During the digestion process the enzyme binds to the specific substrate like protein, carbohydrates, fats, and other biomolecules present in the food to simplify the digestion process. Starch is digested into maltose by the enzyme salivary amylase in the mouth.
How do scientists use fossils to study climate?
PLS HELP
Answer:
Many small organisms can be preserved within these layers of sediment through time. The changing abundances of these fossils through time can tell us whether a change in the environment or climate was gradual or abrupt. Studying fossil pollen and other fossils helps scientists to learn more about climate change.
Answer:
How do scientists use fossils to study climate?
Answer=
Fossils are used by scientists to study climate.The changing abundances of these fossils through time can tell us whether a change in the environment or climate was gradual or abrupt. Studying fossil pollen and other fossils helps scientists to learn more about climate change.
Hope it Helps
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the chief purpose of the photosynthetic process is considered to be the