Answer:
Duramen - The central or inner dark coloured non-functional wood or secondary xylem, not takes part in the conduction of water is called Duramen or Heartwood.
Answer:dark hard position of secondary xylem is called Duramen
Explanation:
GIVING BRAINLIEST! Help please!
How are COASTAL ECOSYSTEMS a major source of Oxygen for the rest of Earth’s water??!
Please don’t copy off internet!
Coastal ecosystems gives aprox. 50% of the earth's oxygen. This is due to the variety of plants that live in their water, example of these are phytoplankton and algae
The coastal ecosystem is a major source of oxygen, because of the presence of plankton, plants, algae, and bacteria that can perform photosynthesize.
What is a coastal ecosystem?A coastal ecosystem is the marine coastal ecosystem. It is the ecosystem where area and the land meet. It includes marine habitats, marine animals, mangroves, algae, backwater, etc.
The coastal ecosystem constitutes 50 to 80% of the earth's oxygen because of the presence of organisms in the region.
Thus, because of the existence of plankton, plants, algae, and bacteria that can photosynthesize, the coastal ecosystem provides a significant source of oxygen.
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usefulness of earthworm
Answer:By their activity in the soil, earthworms offer many benefits: increased nutrient availability, better drainage, and a more stable soil structure, all of which help improve farm productivity. Worms feed on plant debris (dead roots, leaves, grasses, manure) and soil. ... Nitrogen in the casts is readily available to plants.
Explanation:
Earthworms have the ability to eat and mix large amount of soil and organic matter and deposit it in the form of casts. They also enhance incorporation and decomposition of organic matter, increase soil aggregate stability, improve porosity and water infiltration, and increase microbial activity.
the cytoplasm of a skeletal muscle cell has a specific name and is known as
Answer:
Explanation:
A skeletal muscle cell is surrounded by a plasma membrane called the sarcolemma with a cytoplasm called the sarcoplasm. A muscle fiber is composed of many fibrils, packaged into orderly units.
organisms that cannot make their own food are called
Answer:
HeterotrophsExplanation:
Heterotrophs are organisms that cannot make their own food.
Answer:
Organism that eats or absorbs other organisms for food; can't make their own food from energy; also called a heterotroph.
Explanation:
The Taiga biome has more biodiversity than the tropical rain forest biome.
True
False
false
tropical rainforest is the most diverse biome
how are the purposes of the digestive system and circulatory system linked?
Answer:
Explanation:
) Digestive System gets nutrients (good) from food and hands it over to the blood and Circulatory System then carries those nutrients where they need to go. (2) Filters out waste from food and pushes it through intestines and out the body (and you know how and where it gets out).
Catherine works in a plant nursery and likes all the brightly colored flowers there. She asks the owner about them and is surprised to learn that all flowers have to stages to their life cycle. What are the two stages plants go through during their life cycle? Choose two that apply.
Answer:
the gametophyte stage and the sporophyte stage are the first 2 stages of a plants life.
Explanation:
The plants go through haploid and diploid stages during their life cycle.
What is the alternation of generation?Plants have two distinct multicellular stages in their life cycle diploid and haploid.
In the diploid stage, the plant has 2 sets of chromosomes while in the haploid stage the plant only single set of chromosomes.
Therefore, the plants go through haploid and diploid stages during their life cycle.
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why do histone genes have a very slow molecular clock?
Answer:
The structure of the histone gene must be conserved for DNA to function properly.
Explanation:
:)
just answer the questions and pull sentences 4-5
:(
Answer:
top carnivore is alligator sorry o dont really know much about the others hope this helps a little bit
Which cell type undergoes terminal differentiation?
Stem cells are the only form of cell that can differentiate into more specialized cell types. Therefore, they undergo terminal differentiation.
What is terminal differentiation?As cells migrate to the surface and fully differentiate, i.e., as they keratinize and eventually die, this process is known as terminal differentiation. Terminal differentiation is a method of describing that the cells change their phenotypic traits.
During the process of terminal differentiation, several cell types (such as neurons, skeletal and cardiac myocytes, adipocytes, and keratinocytes) acquire specific tasks and ultimately exit the cell cycle. This process may be observed in neurons, adipocytes, and keratinocytes.
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Autotrophs (or producers) capture the sun's energy through a process known as ____ in specialized cell parts known as _____. This energy is converted and stored as _____. Then both autotrophs and heterotrophs use that energy to regenerate ATP. This is most efficient during the process of _____, which happens in a cell's _____.
Help, needed. Its for a grade and im confused.
Answer:
Point Y
Explanation:
When the ball has the greatest potential energy, it has the most movement/it's at it's fastest. You can easily figure out these questions usually by picking the point that is lowest on these ramps. If two points are at the same level, pick the point that leads from the ball going down the steepest ramp.
Answer:
Point Y
Explanation:
The cell membrane is said to be semipermeable because
Answer:
it is made of phospholipid bilayer along with other various lipids, proteins, and carbohydrates
c) Which of the following foods would you recommend as being the BEST for growing children? Explain why.
Steak, Cheese or Rice
Answer:
rice
Explanation:
it has carbohydrates that leave you feeling full
a scientist is comparing the outer layer of an onion cell
Explanation:
Scientists compare the outer layer of onion cells with the outer layer of human skin cells. What makes the outer layer of onion cells unique compared to skin cells? Contains cellulose.
Name the following
he valve presents at the mouth of the pulmonary artery
Explanation:
The pulmonary valve (sometimes referred to as the pulmonic valve) is a valve of the heart that lies between the right ventricle and the pulmonary artery and has three cusps. It is one of the four valves of the heart and one of the two semilunar valves, the other being the aortic valve. Similar to the aortic valve, the pulmonary valve opens in ventricular systole, when the pressure in the right ventricle rises above the pressure in the pulmonary artery. At the end of ventricular systole, when the pressure in the right ventricle falls rapidly, the pressure in the pulmonary artery will close the pulmonary valve.
Diabetes is a disease where the body is unable to produce enough insulin in the pancreas to help lower the levels of blood glucose. The ribosomes manufacturer the insulin in healthy cells, but those who are diabetic do not have healthy cells to do this. In which organ would you find the ribosomes producing insulin in a non diabetic individual?
A.) liver
B.) pancreas
C.) stomach
D.) thyroid
insulin is produced in the pancreas
The pancreas is the organ in which ribosomes produce insulin in a non-diabetic individual. So, the correct option is B.
What do you mean by Diabetes?Diabetes may be defined as a disease that increases the blood glucose level as compared to normal. This is due to the body being unable to produce enough insulin in the pancreas to help lower the levels of blood glucose.
Insulin is produced in the pancreas with the help of ribosomes in non-diabetic individuals.
Therefore, the organ in which ribosomes produce insulin in a non-diabetic individual is the pancreas.
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which trophic level is most vulnerable to extinction?
Answer:
predators since they depend on other animals
Explanation:
what is the function of carbohydrates for the body
Answer:
to provide energy to the body
Explanation:
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After the amino acid chain leaves the ribosome, which organelle then folds, modifies, and transports the protein?
O Lysosome
O Cytoplasm
O Endoplasmic Reticulum
O Ribosome
Answer:
The endoplasmic reticulum
Explanation:
It is not the lysosome because their processes are degrading and recycling cellular waste, and involved in energy metabolism
It is not the cytoplasm because the cytoplasm doesn't do anything itself, it just provides an environment for the rest of the organelles to do their job
It is not the ribosome because the amino acid chain left the ribosome in the question
For secretory, plasma membrane, and organelle proteins, the endoplasmic reticulum (ER) is a significant protein folding compartment. Thus, option C is correct.
What is the role of Endoplasmic Reticulum in folding?A polypeptide chain cannot acquire its right structure and function without protein folding.
Chaperones are HSP that aid in protein folding. Chaperonins are multimeric complexes that fold proteins by forming hollow structures.
Numerous general activities of the endoplasmic reticulum include transporting produced proteins in vesicles to the Golgi apparatus and folding protein molecules into sacs termed cisternae.
Therefore, Endoplasmic Reticulum folds, modifies, and transports the protein.
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7. What forearm muscle starts in the arm and ends on the radius bone?
Answer:(:
Explanation:
brachioradialis
What is the function of the sporangium?
protects the mature gametes
protects the developing mother spore cells
forms haploid cells through mitosis
passes characteristics from one generation to the next
Answer:
protects the developing mother spore cells
Explanation:
got it right
why are they assuming the large molecules will stay on their own side of the membrane?
Answer:
What is osmosis? Why are they assuming the large molecules will stay on their own side of the membrane? The membrane is semipermeable, so the membrane only allows some molecules through and not others. In this case, it doesn't allow the large molecules through.
Explanation:
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It is assumed that the large molecules will stay on their own side of the cell membrane because the membrane is semipermeable which only allows the passage of some molecules in and out of the membrane.
What is a Cell membrane?A cell membrane may be defined as a type of biological membrane that significantly separates and protects the inner environment of all cells from the outside environment. It is semi-permeable in nature.
The cell membrane consists of a lipid bilayer that is semi-permeable. The cell membrane regulates the transport of materials entering and exiting the cell.
The ability of a molecule to travel across a membrane depends on its concentration, charge, and size. In general, molecules diffuse across membranes from areas of high concentration to low concentration. Cell membranes prevent charged molecules from entering the cell unless the cell maintains an electrical potential.
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Which of the following describe genes?
А.
a set of instructions encoded in mRNA
B
a set of instructions encoded in DNA
ООО
с
a set of instructions encoded in tRNA
D
a set of instructions encoded in a protein
Explanation:
A gene is the basic physical and functional unit of heredity. Genes are made up of DNA. Some genes act as instructions to make molecules called proteins.
a particularly active cell might contain large numbers of
before it was known as "science," this branch of study was called what?
Answer:
biology is the correct answer
Before it was known as "science," this branch of study was called Natural Philosophy.
What do you mean by science?The pursuit of knowledge is what is meant by the term "science." This approach describes and provides an explanation for natural occurrences based on observations and experiments. The term "science" can also refer to the arranged body of information that has been accumulated by individuals via the application of that system.
A person who works in a particular field of science and possesses in-depth knowledge about that field is called a scientist. Or, to be more general, anyone who studies or works in a scientific field is considered to be a scientist.
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What happens to the population of lynx as the number of snowshoe hares decreases?
Which organelle is labeled i?
animal cell
Answer:
I believe the line is pointing to the nucleus, which is the green ball in the center of the cell
Explanation:
what is the approximate percentage of total fixed nitrogen attributed to human activities?
Of the annual global total of fixed nitrogen, human activities account for roughly 45%.
Nitrogen fixation is the global amount of nitrogen that gets assimilated by any living organism into another organic compound. The organic compound can be ammonia or nitrogen ions.
Of the total global annual nitrogen fixation, humans account for a great amount. The current estimation is that humans cause 45% of the nitrogen fixation annually. The leading causes of this high rate are the burning of fossil fuels and increased agricultural fertilizer use.
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name a difference between a plant cell and an animal cell.
Answer:
the cell wall, chloroplasts
Explanation:
plant cells have a cell wall, but animal cells do not
plant cells also have chloroplast, but animal cells don't