Answer:
Explanation:
La evidencia de un antepasado común en los seres vivos, que han encontrado durante décadas científicos que trabajan en numerosos campos, demuestra la descendencia común de estos seres, que la vida en la Tierra se desarrolló a partir de un último antepasado universal, que la evolución existe y que puede demostrar los procesos naturales que han dado como resultado la biodiversidad de la vida en la Tierra. Esta evidencia apoya la síntesis evolutiva moderna, la actual teoría científica que explica cómo y por qué cambia la vida a lo largo del tiempo. Los biólogos evolucionistas han documentado evidencias de antepasados comunes realizando predicciones verificables, probando hipótesis y desarrollando teorías que ilustran y describen sus causas.
La comparación de secuencias genéticas de ADN ha revelado que los organismos filogenéticamente próximos tienen un mayor grado de similitud secuencial que los organismos filogenéticamente alejados. Se pueden encontrar más pruebas de la descendencia común en detritus genéticos como los pseudogenes, regiones del ADN ortólogas a un gen en un organismo relacionado, pero que ya no tienen actividad y parecen estar experimentando un proceso continuo de degeneración por acumulación de mutaciones.
Biology peeps please help me
PLEASE CAN SOMEONE HELP I AM TAKING A TEST AND NEED A ANSWER QUICKLY I WILL REWARD BRAINLIEST
Which of the following best defines the process of the cells, tissues, organs, and organ systems all working together to maintain a stable internal environment?
Group of answer choices
A. digestion
B.homeostasis
C. excretion
D. disequilibrium
Answer:
Process of the cells, tissues, organs, and organ systems all working together to maintain a stable internal environment are best defined by the term homeostasis (option B).
Explanation:
All living organisms perform their functions properly by maintaining some conditions of the internal environment constant, such as temperature, pH and amount of water or electrolytes. This also guarantees a healthy state and a longer life.
The maintenance of the organic balance is done by an internal regulation system, called homeostasis. Homeostasis means all the processes aimed at preserving the balance and fulfilling the organic functions properly.
The other options are not correct because:
A. Digestion is the process by which nutrients are converted into small molecules that are easily absorbed by the body.
C. Excretion is the process of eliminating waste from metabolic and organic processes.
D. Disequilibrium is the term applied to the failure or loss of ideal conditions or balance.
What is the relationship between global winds and global ocean currents?
A. The pattern of global winds is one of the factors that drives global ocean currents
B. The pattern of global ocean currents is one of the factors that drives global winds.
C. Both are caused by heat from the sun, and they do not affect each other.
D. Both are caused by Earth's rotation, and they do not affect each other
Answer: B
Because i said so
The uneven heating of the Earth's surface leads to the formation of large global wind systems. The surface currents of the oceans are in turn driven by these global wind systems. Thus, option B is correct.
What are global winds and global ocean currents?Large-scale surface ocean currents are propelled by global wind systems that are fuelled by solar energy. These currents transport heat from the tropics to the poles, altering the climate on a local as well as global scale.
Friction from the global winds, which both follow the same basic circulation, clockwise in the Northern Hemisphere and counterclockwise in the Southern Hemisphere.
Warm water and precipitation are transported from the equator to the poles by ocean currents, whereas cold water is returned to the tropics from the poles.
Therefore, The pattern of global ocean currents is one of the factors that drives global winds.
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Root cells of plants take in some minerals from the surrounding soil by spending energy. After the plant obtains enough minerals to maintain health, the plant will continue to absorb minerals from the soil. Which reason best explains why root cells need to spend energy in order to transport some minerals into cells?
The question is incomplete; the complete question is;
Root cells of plants take in some minerals from the surrounding soil by spending energy. After the plant obtains enough minerals to maintain health, the plant will continue to absorb minerals from the soil. Which reason best explains why root cells need to spend energy in order to transport some minerals into cells?
Root cells are unable to use sunlight energy for mineral uptake.
Mineral concentration is higher in root cells than in the surrounding soil
Cell membrane pores in roots are too small for passive uptake of minerals
Cell membranes in roots lack proteins for the passage of minerals.
Answer:
Mineral concentration is higher in root cells than in the surrounding soil
Explanation:
Mineral uptake by plant roots occurs by active transport of ions into the cells of root hairs, this process requires energy.
The concentration of minerals in the soil is quite low. The root hair cells of plants possess carrier proteins that carry mineral ions and move them into the cell against existing concentration gradient. This process requires energy and is known as active transport.
How can DNA be useful in phylogeny? Question 14 options: A) DNA from every organism in a clade is sequenced to identify genetic mutations that have occurred. B) DNA sequences from different species can be compared, giving us more information about their evolutionary relationships. C) DNA sequences are rearranged to predict how species could evolve in the future. D) DNA isn't useful in phylogeny, as morphological characteristics are used exclusively in phylogeny.
Answer:
The correct answer is - option B. DNA sequences from different species can be compared, giving us more information about their evolutionary relationships.
Explanation:
The study of the evolution of a species in a longer period of time and its evolutionary relation with other species is phylogeny. DNA is the basis of the molecular phylogeny of a species to find out the evolution of species.
Genetic mutations, a sequence of nucleotides, and other information of DNA helps in the establishment of divergence from common ancestry. By comparing the information it gives an idea about the evolutionary ancestry of two or more species.
Which of the following events can result in inheritable genetic variations in organisms?
mutation of DNA by environmental factors
genetic recombination during meiosis
occurrence of viable errors during DNA replication
translation errors during protein synthesis
Answer:
Its A
Explanation:
Answer:
its D bc u got to look at it nd its not A or C so its B or D u pick B or D
Explanation:
i hope its help u
why should a leaf be attached to it parent plant
Which of the following statements about a scientific theory is NOT true?
Answer:
sorry, but there are no statements. Maybe you can edit it and add the pictures so we can see them.
Cell size is limited to:
a. Thickness of the cell wall
b. Size of the cell's nucleus
c. Cell's surface area-to-volume
ratio
d. Amount of cytoplasm in the
cell
Answer:
C
Explanation:
I'm pretty sure it's either C or B
fingerprint patterns that form complete circles are known as:
A. whorls
B. irregulars
C. arches
D. tented arches
Answer:
whorls
Explanation:
Whorls. Whorls represent 34 percent of all fingerprint patterns. At least one ridge in a plain whorl pattern makes a complete circuit in the form of a circle, oval or spiral, and there must be at least two triangular shapes called deltas. ... Central pocket loop whorls make a complete circle inside the two deltas.
What is the correct term for a living organism
Answer:
living thing
Explanation: the corrcet term for a living orgainsm is a living thing.
Explanation:
you got Animal or Creature or Being
Is water is consumer
Answer:
water is not a consumer but a producer
Explanation:
this is because they use nutrients from the sun to produce their own foods
when a sperm cell fertilizes an egg cell a new cell is created. what is the name of the newly created cell
a. gastrula
b. zygote
c. blastula
d. endoderm
Answer:
The answer is B, zygote.
I need help please help i will give brainliest
Answer:
A
Explanation: ok
Answer:
A
Explanation:
5. network of complex interactions formed by the feeding relationships among the
various organisms in an ecosystem
A network of complex interactions formed by the feeding relationships among the various organisms in an ecosystem is known as Food web.
What is a food web?A food web is the natural interconnection of the different food chains and a graphical representation of what-eats-what in an ecological community in the nature. Another name used for the food web is the consumer-resource system.
Organisms which are present in the food webs are grouped into different categories are called as trophic levels. These levels are divided into producers, consumers, and decomposers.
Food web are the interactions which integrates the transfer of matter and energy between the living organisms which eat, and are being eaten by other organisms, capturing thus essential information about the species interactions, materials flow, community structure, and the ecosystem functioning.
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What makes a scientific observation different from day to day observations?
Which is a bad practice when dealing with hot or flammable items?
A. Keeping loose papers near open flames
B. Tying back loose hair
C. Wearing insulated gloves to handle hot objects
D. Knowing the locations of emergency exits
Answer:
A, keeping loose papers near open flames
Answer:
A
Explanation:
.
How many protons, neutrons, and electrons are present in an atom of hafnium, Hf, with a mass number of 178?
Answer:
Name Hafnium
Atomic Mass 178.49 atomic mass units
Number of Protons 72
Number of Neutrons 106
Number of Electrons 72
Answer: 72 protons, 178 neutrons, 106 electrons
Explanation:
what is the structure and function of the mitochondria be sure to relate them
Ha writes of seven wishes.
Based on these seven wishes, and other things you know about Ha, which of the following best describes her character?
a. She selfishly wishes for things to make her happy.
b. She is a complex character who wishes for both childlike and serious things.
c. Her wishes show that she wants to please others.
d. She is unrealistic and just wishes for impossible things.
4. Cite specific details from the text to support your answer in Question 3.
Please help do this please cite support and explanation please i will give Brainliest because of this thank YOU SOOO MUCH
PLEASE HELP ME THANK YOU
Answer: Not enough information
Explanation:
What are 3 structures that bacterial (prokaryotic) cells share with eukaryotic cells?
Answer:
Cell membranes, DNA, and Ribosomes
Hope this helps!!
Answer: Both prokaryotic and eukaryotic cells have structures in common. All cells have a plasma membrane, ribosomes, cytoplasm, and DNA.
plasma membrane, ribosomes, cytoplasm, and DNA.
Does respiration expend more energy more than photosynthesis?
Answer:
No,photosynthesis expend more energy than respiration
what venn diagram in math
Please help!!!!!! Here’s a picture!!!! HELP all my points
Match each term with its definition.
Water; Inorganic compound
Oxygen; Element found in water
Carbon; Element that is part of most organic compounds
Carbohydrate; Energy-rich organic compound
Hope that helped!
one tool that can be used to display your data is a ____.
a. balance
b. spring scale
c. microscope
d. computer
I need a answer by 6:00 PM!!!!!!!!
Answer:
computer
Explanation:
it might just be a computer
Which statement correctly describes the relationship between genes, proteins, and traits?
which one of these situations is commonly caused by acid rain?
a. people being poisoned by drinking water
b. fish and birds in freshwater habitats dying off
c. people receiving acid burns on there skin
d. whales and dolphins dying off in the oceans
A situation that is commonly caused by acid rain is the dying off of fish and birds in freshwater habitats. Thus, the correct option for this question is B.
What do you mean by Acid rain?Acid rain may be defined as a type of precipitation that correspondingly include acidic components, like sulfuric acid, nitric acid, etc. that fall to the ground from the atmosphere in wet or dry forms like rain, fog, hail, etc.
The pH of acid rain is generally low compared to normal water. So, it causes numerous impacts on the earth's surface. But the most consequential influence of acid rain is the destruction of fish and birds in freshwater habitats.
It generally lowers the pH of the freshwater ecosystem and makes it unfavorable for many organisms like producers, small fishes, birds, etc. They cannot adapt themselves to such lower pH and have to dye off.
Therefore, the correct option for this question is B.
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Write in the Functions of Each Organelle Describe the function of each organelle. Nucleus carries the genes, structures that contain the hereditary information. Nucleoli are small bodies often seen within the nucleus. Ribosome Endoplasmic reticulum Golgi apparatus
Answer:
Explanation:
Ribosome works with ribonucleic acid to produce a functional protein. Translation takes place at the ribosome.
The endoplasmic reticulum helps in transport of proteins that are made by the ribosomes and folds them into sacs that are called cisternae from where it is moved to the Golgi apparatus.
Golgi apparatus served as store house for molecules that moved from endoplasmic reticulum. They are then released from the Golgi apparatus in what are called secretory vesicles into the cytoplasm.
Answer:
See the answer below
Explanation:
The nucleus is a double membrane organelle that is responsible for controlling the activities of the cell. It contains the DNA which carries the gene and the hereditary information of the cell.
The nucleoli are small spherical structures that are located within the nucleus which function in the formation of the ribosome and hence, important for protein synthesis in the eukaryotic organisms.
The ribosomes are structures within the cell which represent the site of protein synthesis. During protein synthesis, the mRNA and the tRNA attach themselves to the ribosome to form the translation complex for the initiation of protein synthesis.
The Golgi apparatus is a system of membrane responsible for the packaging and secretion of proteins and lipids within the cell.
Question 7 Which of the following is NOT paired correctly? fat- lipid starch-nucleic acid glucose Carbohydrate enzyme protein
Answer:
Starch-nucleic acid is not paired correctly.
In which layers of Earth do convection currents occur?
Answer:
Convection currents in the Earth occur in the mantle.
Explanation:
Answer:
The mantle
Explanation:
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