true
................................
Answer:
True
Explanation:
By the end of grade 2. All organisms have external parts. Different animals use their body parts in different ways to see, hear, grasp objects, protect themselves, move from place to place, and seek, find, and take in food, water and air. Plants also have different parts (roots, stems, leaves, flowers, fruits) that help them survive, grow, and produce more plants.
By the end of grade 5. Plants and animals have both internal and external structures that serve various functions in growth, survival, behavior, and reproduction. (Boundary: Stress at this grade level is on understanding the macroscale systems and their function, not microscopic processes.)
By the end of grade 8. All living things are made up of cells, which is the smallest unit that can be said to be alive. An organism may consist of one single cell (unicellular) or many different numbers and types of cells (multicellular). Unicellular organisms (microorganisms), like multicellular organisms, need food, water, a way to dispose of waste, and an environment in which they can live.
Within cells, special structures are responsible for particular functions, and the cell membrane forms the boundary that controls what enters and leaves the cell. In multicellular organisms, the body is a system of multiple interacting subsystems. These subsystems are groups of cells that work together to form tissues or organs that are specialized for particular body functions. (Boundary: At this grade level, only a few major cell structures should be introduced.)
By the end of grade 12. Systems of specialized cells within organisms help them perform the essential functions of life, which involve chemical reactions that take place between different types of molecules, such as water, proteins, carbohydrates, lipids, and nucleic acids. All cells contain genetic information in the form of DNA molecules. Genes are regions in the DNA that contain the instructions that code for the formation of proteins, which carry out most of the work of cells.
Multicellular organisms have a hierarchical structural organization, in which any one system is made up of numerous parts and is itself a component of the next level. Feedback mechanisms maintain a living system’s internal conditions within certain limits and mediate behaviors, allowing it to remain alive and functional even as external conditions change within some range. Outside that range (e.g., at a too high or too low external temperature, with too little food or water available), the organism cannot survive. Feedback mechanisms can encourage (through positive feedback) or discourage (negative feedback) what is going on inside the living system.
A central feature of life is that organisms grow, reproduce, and die. They have characteristic structures (anatomy and morphology), functions (molecular-scale processes to organism-level physiology), and behaviors (neurobiology and, for some animal species, psychology). Organisms and their parts are made of cells, which are the structural units of life and which themselves have molecular substructures that support their functioning. Organisms range in composition from a single cell (unicellular microorganisms) to multi-cellular organisms, in which different groups of large numbers of cells work together to form systems of tissues and organs (e.g., circulatory, respiratory, nervous, musculoskeletal), that are specialized for particular functions.
Special structures within cells are also responsible for specific cellular functions. The essential functions of a cell involve chemical reactions between many types of molecules, including water, proteins, carbohydrates, lipids, and nucleic acids. All cells contain genetic information, in the form of DNA. Genes are specific regions within the extremely large DNA molecules that form the chromosomes. Genes contain the instructions that code for the formation of molecules called proteins, which carry out most of the work of cells to perform the essential functions of life. That is, proteins provide structural components, serve as signaling devices, regulate cell activities, and determine the performance of cells through their enzymatic actions.
differentiate between the chromosome theory of inheritance and the gene chromosome Theory
Answer:
The Chromosomal Theory of inheritance, proposed by Sutton and Boveri, states that chromosomes are the vehicles of genetic heredity. Neither Mendelian genetics nor gene linkage is perfectly accurate; instead, chromosome behavior involves segregation, independent assortment, and occasionally, linkage.
Which best describes a temperate deciduous forest?
(A) Seasons are well defined,
(B) Short growing season,
(C) Low rainfall,
(D) all of the above.
Answer:
I think its D all of the above
what is science explain
Science refers to the construction of knowledge by using the scientific method. This method is based on empirical evidence.
Science can be defined as the construction of knowledge (scientific knowledge) by using the scientific method.
The scientific method includes several sequential steps:
ObservationAsk questionsForm a testable explanation (hypothesis)Test the hypothesisCollect results (empirical evidence)Draw conclusionsIn the scientific method, empirical evidence can be used to support the working hypothesis.
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science, any system of knowledge that is concerned with the physical world and its phenomena and that entails unbiased observations and systematic experimentation. In general, a science involves a pursuit of knowledge covering general truths or the operations of fundamental laws.
NO NEED TO THANKS ME IT'S MY PLEASURE TO HELP U DEAR( ꈍᴗꈍ)
What properties do all solids share?
Answer:
Solids have many different properties, including conductivity, malleability, density, hardness, and optical transmission, to name a few.
Explanation:
dont know why my answer got deleted but here's a different answer :'(
What is a tumor that remains localized in a specific area called?
Benign
Carcinogen
Metstatic
Malignant
Answer:
Benign
Explanation:
Sand is a type of mixture A mixture is a _____
Answer:
heterogeneous mixture
Answer:
sand is a Heterogeneous mixture. Heterogeneous mixture has two or more chemical substances.
A mixture is a material made up of two or more different chemical substance/substances which are not chemically combined!
Explanation:
hope this helped ^_^
Which two statements best describe jet streams in the northern hemisphere?
A. The subtropical jet stream separates warmer air near the equator
and cooler air to the north.
B. The polar jet stream separates colder air near the pole and
warmer air to the south.
C. The subtropical jet stream causes ocean currents to form near
the equator.
A
D. The polar jet stream circulates air between the North Pole and the
South Pole.
SUBMIT
The correct answer is B. In the Northern Hemisphere, the polar jet stream separates colder air near the pole and warmer air to the south.
The jet stream is a geophysical effect caused by the large temperature difference between the north pole and the equator. Something similar also happens on a small scale. In summer, when night falls and the ground cools where the sun is gone, air blows from north to south across the boundary between warm and cold air. This is the refreshing evening breeze.
From the north, a jet stream generally supplies colder air than from the west or south. The jet stream also creates depressions with a warm front and a cold front.
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Answer:
A. The subtropical jet stream separates warmer air near the equator
and cooler air to the north.
B. The polar jet stream separates colder air near the pole and
warmer air to the south.
Explanation:
Describe the function of the denticulate ligaments?
Answer:
In my perspective, the main fuction of denticulate ligaments is to stabilize the spinal cord within the vertebral canal.
Respiration is a process where many chemical bonds inside the body break and release energy. This energy is used to perform various activities such as moving muscles. Explain the energy transformation in this process.
Answer:"Process of breaking down glucose to obtain energy in the form of ATP" also known as Cellular Respiration.
I hope this helps
Explanation:
Biochemists developed a compound that they hypothesize will disrupt the ability of the cells to organize centrioles and microtubules. This compound is applied to a group of onion root tip cells. What will serve as the best evidence that the biochemists' hypothesis about this compound is correct?
The best evidence that the biochemists' hypothesis about this compound is
correct will be lack of growth in the onions.
The centrioles and microtubules are important during the process of cell
division(mitosis) by organisms. They ensure that the cells divide properly
which helps cells to grow.
The compound being hypothesized to disrupting the activities of the
centrioles and microtubules means lack of growth will signify that it is
correct and the most appropriate choice.
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What is the resting phase.
How warm does the ocean water need to be and how deep for Hurricanes to form?
Answer:
Whipping up a hurricane calls for a number of ingredients readily available in tropical areas: A pre-existing weather disturbance: A hurricane often starts out as a tropical wave. Warm water: Water at least 26.5 degrees Celsius over a depth of 50 meters powers the storm.
Explanation:
Mandela's cancer began in skin cells and then spread to cells in the liver and brain. What type of cancer does this situation describe
Metastatic melanoma skin cells and then spread to cells in the liver and brain.
Metastatic melanoma is a disease that occurs when the cancerous cells from the original tumor.
Where does melanoma usually spread to first?The first place a melanoma tumor metastasizes to is the lymph nodes, by literally draining melanoma cells into the lymphatic fluid, which carries the melanoma cells through the lymphatic channels to the nearest lymph node basin.
Thus, Metastatic melanoma is the answer.
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Drag and drop each organism to match it to the correct ocean zone where it can be found.
Answer:
Neritic zone: Kelp
Sunlight zone: Plankton
Twighlight zone: Giant squid
Midnight zone: Sperm whale
Abyssal zone: Marine snow
Explanation:
A scientist recently discovered a pond organism that is unicellular, contain
other membrane-bound organelles, and possesses a flagellum. In which ki
organism classified?
Fung
Monera
Plant
Protista
A pond organism that is unicellular, contains membrane-bound organelles and possesses a flagellum is a PROTISTA. It is a unicellular kingdom.
The Protista kingdom is composed of eukaryotic single-celled unicellular organisms.
Flagellated protists are microorganisms having a tail-like projection known as flagellum.
The flagellum is a structure used for motion, thereby, in general, flagellated protists are found in moist environments (e.g., ponds, fresh-water, etc).
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Which statement below BEST summarizes the role of the DNA molecule in cells?
Answer:
It contains the genetic material
Question 15 of 20
What is true about ice and liquid water?
O A. Ice has a lower density than liquid water because it has more
space between molecules.
O B. Ice has a higher density than liquid water because it has more
space between molecules.
O C. Ice has a higher density than liquid water because it has less
space between molecules.
O D. Ice has a lower density than liquid water because it has less sace
between molecules.
Answer: B
Explanation:
Answer:
I think A! Sorry if wrong!
Plant and animal cells are both eukaryotic. This means they...
O Have a nucleus
O Contain DNA and RNA.
O Can reproduce on their own.
Which describes a dominant allele?
A. It can be masked by the presence of a recessive allele
B. Its trait will always show up if it is present
C. It is the type of allele that makes a hybrid
D. It is the form of the gene that comes from the mother
Answer:
B.
Explanation:
A dominant allele is an allele whose trait will always show up in an organism when the allele is present
How could plate tectonic movements affect the evolution of life?
Answer:
A planet with oceans, continents, and plate tectonics maximizes opportunities for speciation and natural selection, whereas a similar planet without plate tectonics provides fewer such opportunities. Plate tectonics exerts environmental pressures that drive evolution without being capable of extinguishing all life. Explanation: trust :0
1. Why is cell an open dynamic system?
The exchange of matter or substances between the cell and its environment is dynamic as it varies in direction and rate as per the requirements of the cell. Thus,a cell attains a stead -state wherein the internal conditions of the cell remain constant. Hence, cell is considered to be a open dynamic system
In a chemical reaction, 1,3-bisphosphoglycerate ADP yields 3-phosphoglycerate plus ATP. What is the delta G for this reaction
Answer:
The reactants have more free energy than the products. In a chemical reaction, 1,3-bisphosphoglycerate + ADP yields 3-phosphoglycerate plus ATP. ... If the delta G of a reaction was -31.45 kJoules, you would know that: The reaction is spontaneous.
Explanation:
The reactants have more free energy than the products. In a chemical reaction, 1,3-bisphosphoglycerate + ADP yields 3-phosphoglycerate plus ATP. ... If the delta G of a reaction was -31.45 kJoules, you would know that: The reaction is spontaneous.
What is the difference between a producer and a consumer? (Select all that apply.)
Consumers convert sunlight energy into fuel and producers cannot.
Producers convert sunlight energy into fuel and consumers cannot.
Consumers can make their own food energy and producers cannot.
Producers can make their own food energy and consumers cannot.
Answer:
B & D
Explanation:
Producers make
Consumers eat/use producers and/or what they make
Hope its right :)
The difference between a producer and a consumer is producers convert sunlight energy into fuel and consumers cannot and producers can make their own food energy and consumers cannot. Thus, option B and D are correct.
Who is considered as producer?All green plants which prepares their own food is considered as the producers. Decomposers are usually defined as as those organisms which converts the complex organic matter into simpler ones, hence consuming the required amount needed and liberating the left over to the environment.
The cycle goes on and helps in maintaining a state of between the living and the decaying particles and the producers, consumers and the decomposers are interdependent on each other.Consumers convert sunlight energy into fuel and producers cannot.
So, it can be concluded that, after the death of an organism (consumer), some amount of energy is consumed by the decomposers and the remaining is mixed with the environment.
Therefore, The difference between a producer and a consumer is producers convert sunlight energy into fuel and consumers cannot and producers can make their own food energy and consumers cannot. Thus, option B and D are correct.
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rough endoplasmic reticulum what is and function
The general function of the endoplasmic reticulum is to produce protiens for the cell to function. The rough ER in particular has many ribosomes on it's surface, while the smooth ER does not. These ribosomes give the rough ER it's distinct appearence under a microscope, and assist in making protiens.
The external appearance of traits is called: -----
a.
Ecotype
b.
Genotype
c.
Cytotype
d.
Phenotype
Answer:
d) Phenotype
Explanation:
External appearance of an individual trait is called phenotype. The term "phenotype" refers to the observable physical properties of an organism; these include the organism's appearance, development, and behavior.
What is limestone?**
Answer: a hard sedimentary rock, composed mainly of calcium carbonate or dolomite, used as building material and in the making of cement.
Describe how cellular respiration and photosynthesis are related to one another.
Answer:
Photosynthesis makes the glucose that is used in cellular respiration to make ATP. ... While photosynthesis requires carbon dioxide and releases oxygen, cellular respiration requires oxygen and releases carbon dioxide. It is the released oxygen that is used by us and most other organisms for cellular respiration
Is fermentation as efficient as aerobic cellular respiration? Multiple choice question, yes or no?
Answer:
NOEXPLANATION :
Aerobic cell respiration is roughly 18 times more efficient than anaerobic cell respiration. Your cells require a lot of energy and are dependent on the high efficiency of aerobic respiration. They quickly die if deprived of oxygen.
!!!!ILL GIVE BRAINLIEST AND 20 POINTS!!!!!
List three major events in cell theory development.
Answer:
These findings led to the formation of the modern cell theory, which has three main additions: first, that DNA is passed between cells during cell division; second, that the cells of all organisms within a similar species are mostly the same, both structurally and chemically.
1. In 1683, Leewenhoek discovers bacteria.
2. In 1857, Kolliker describes mitochondria in muscle.
3. Ruska builds the the first transmission electron microscope.
Hope that helped in some way. x
Which statement best describes energy release in cellular respiration? (1 point)
Stored chemical energy is broken down and released in the cytoplasm.
Stored chemical energy is broken down and released in the cytoplasm.
Stored chemical energy is broken down and released in the mitochondria.
Stored chemical energy is broken down and released in the mitochondria.
Stored chemical energy can be used immediately and is released in the cytoplasm.
Stored chemical energy can be used immediately and is released in the cytoplasm.
Stored chemical energy can be used immediately and is released in the mitochondria.
Answer:
During cellular respiration, glucose is broken down in the presence of oxygen to produce carbon dioxide and water. The energy released during the reaction is captured by the energy-carrying molecule ATP (adenosine triphosphate).
So the answer is Stored chemical energy is broken down and released in the mitochondria.
Explanation:
In cellular respiration, stored chemical energy is broken down and released in the mitochondria. The correct option is B.
What is mitochondria?Mitochondria are the membrane-bound organelles that create the maximum of the chemical energy necessary to power the biochemical reactions of the cell.
The mitochondrial energy is stored in a small molecule referred to as adenosine triphosphate (ATP).
Cellular respiration is the way by which organic fuels are oxidized in the presence of an inorganic electron acceptor, encompassing one as oxygen, to give enormous amounts of energy and pressure the majority production of ATP.
Cellular breathing is the way by which cells in plants as well as animals break down glucose and convert it into power, which is then used to perform work.
The goal of cellular respiration is simple: to provide the energy that cells require to function.
Thus, the correct option is B.
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