Answer:
The walls of xylem cells are lignified (strengthened with a substance called lignin). This allows the xylem to withstand pressure changes as water moves through the plant.
Explanation:
The xylem transports water and minerals from the roots up the plant stem and into the leaves.
In a mature flowering plant or tree, most of the cells that make up the xylem are specialised cells called vessels.
Vessels:
Lose their end walls so the xylem forms a continuous, hollow tube. Become strengthened by a chemical called lignin. The cells are no longer alive. Lignin gives strength and support to the plant. We call lignified cells wood. Transport in the xylem is a physical process. It does not require energy.
What percentage of terrestrial biodiversity can be found in forests? Give three examples of the biodiversity you find in forests.
Answer:
See the answer below
Explanation:
According to World Wildlife, the world's forests hold about 80% of the world's terrestrial biodiversity. This means that other biomes of the world such as desert, tundra, etc., hold only 20% of the entire terrestrial biodiversity
Forest's Biodiversity generally refers to the variety of living organisms present in the forest, including plants, animals, and microorganisms. Hence, the forest has plant biodiversity, animal biodiversity, and microbial biodiversity.
Which correctly list the three gases that each make up less than 1 percent of Earth’s atmosphere?
Carbon dioxide
Aargon
Water vapor
Which body systems are directly responsible for regulating nodes and protecting the body from harmful materials in tissue fluid?
Answer:
Integumentary System
Explanation:
This system consists of the skin, hair, nails, and sweat glands. Its main function is to act as a barrier to protect the body from the outside world. It also functions to retain body fluids, protect against disease, eliminate waste products, and regulate body temperature.
Hurry Please!!
Energy transfer is inefficient between trophic levels because
Answer:dead organisms and waste are recycled throughout the tropic levels
Explanation:
12. Plant cells are less likely than animal cells to burst when filled with extra fluid. Which of the
following structures is unique to plants and responsible for this difference.
A cell wall
B. cell membrane
C. mitochondrial
D. chloroplast
Answer:
A cell wall
Explanation:
Plant cells are enclosed by a rigid cell wall. When the plant cell is placed in a hypotonic solution , it takes up water by osmosis and starts to swell, but the cell wall prevents it from bursting.
what is a pe.do???? anyone know?
Answer/Explanation:
It is sexual abuse from someone who is 16+ and is at least 5 years older and is attracted to a minor that is 13 or less years of age.
what is gene expression? What are the two stages of gene expression? What happens during those two stages?
Answer:
Gene expression is the process by which information stored in DNA is used to direct the synthesis of a specific gene product. This synthesis takes place in two stages: transcription and translation.
Explanation:
Gene expression is the process that makes it possible to obtain proteins from genes. Genes are nucleotide sequences of DNA that encode the information necessary for protein synthesis. This synthesis takes place in two stages: transcription and translation. Transcription takes place in the nucleus and in it one of the two strands that make up the double strand of DNA serves as a template for a specific sequence to be copied into a single stranded RNA molecule. Subsequently, this RNA leaves the nucleus and carries the message - the nucleotide sequence - to the ribosomes, hence the name of messenger RNA (mRNA). Translation is a cytoplasmic process in which the mRNA molecule is decoded to generate a specific chain of amino acids, called a polypeptide (the protein). The correspondence between nucleotides (mRNA) and amino acids (protein) is what is called the genetic code.
In a food chain, if 50,000 calories of energy are in the Ferns. How many calories of
energy will be available for the fish, which are the secondary consumers?
Answer:
500 calories
Explanation:
If ferns are primary producers and they only get 50000 calories then the next level of the food pyrimid will only get 1o percent of that. Next come primary producers which would get 10 percent of what the primary consumers would get so they would get 5000 calories. Next would be the secondary consumers which is the fish. they would get 10 percent of what the primary producers get so they would only be receiving 500 calories. I HOPE THIS HELPS
what happens to a rock when it is weathered?
Explanation:
what happens to a rock when it is weathered?
Weathering is the breaking down or dissolving of rocks and minerals on Earths surface. Once a rock has been broken down, a process called erosion transports the bits of rock and minerals away. ... Water, ice, acids, salts, plants, animals, and changes in temperature are all agents of weathering.
If adequate nutrients are present, primary productivity depends on _____.
a. organism size
b. salinity
c. temperature
d. illumination
e. organism density
how has human understanding of space changed throughout history
Answer:
Well for starters people thought the earth was flat, now looking at earth through space they now know it's not.
Explanation:
Make a short note on the classes of vitamins ?
Plz help with this question
Answer:
calsioiero
Explanation:
What 2 chemicals dose cellular respiration need as reactants
1.) What is the percentage chance of producing a boy?
2.) What is the percentage chance of producing a girl?
Answer/Explanation:
There is a 50% chance of producing a boy. The is a 50% chance of producing a girl. To find percentage divide the desired factor by the possible outcomes. In this case, it 1 divided by 2 which is 0.5. Multiply the decimal by 100 to find the percentage.
1/2 = 0.5
0.5 x 100 = 50%
Light has different colors that have different ______.
I need help please guys fast
What is the term for the parts of the cell that accomplish the basic functions of living things
for the cell?
O organs
O tissues
O organelles
O cell membranes
Answer:
Cell membranes
Explanation:
Answer:
Organells
Explanation:
Have it on my test :p
True or false microwaves are a type of infrared wave?
Answer:
yes they are a type of infrared wave
Answer:
Microwaves are a type of infrared wave. False. Microwaves are a type of electromagnetic radiation. ... Radio waves, microwaves, and ultraviolet waves all have longer wavelengths than visible light.
How can we prevent bacteria from infecting us? How can we prevent viruses from infecting
Crustal movements in one location can affect locations far away. What evidence from the text supports this conclusion?
Answer:
Geologists mapped the ocean floor and discovered the mid-oceanic ridge. Crustal movements create convergent, divergent, and transform boundaries.
The diagram shows the colonization of an island habitat that has never been occupied by a particular species of beetle. Which statement regarding the diagram is true?
the beetles on the island have higher rates of mutation due to their isolation and mutants always have a natural selective advantage
the beetles on the island have a greater amount of genetic variety than the original population of that species of beetle (stabilizing selection)
the one beetle that was introduced to the island is the common ancestor of all of the beetles of that species on the island showing founder effect (genetic drift)
the beetle species on the island shows a case of disruptive selection and increasing genetic diversity
fast
Answer:
the one beetle that was introduced to the island is the common ancestor of all of the beetles of that species on the island showing founder effect (genetic drift)
Explanation:
Maybe this is right
Just take the test
Why might an antibiotic NOT work on a virus?
Answer:
look at explanation
Explanation:
Antibotics don't work against viruses because they only work on bacterial infections. These bacterial infections are very much difgferent than viruses, like c o v i d, the flu, or the common cold.
HELP it’s easy I’ll give Brainliest
Answer: The first question answer is 2 and so is the second one.
B and C
Explanation:
Where is the youngest rock in the Atlantic Ocean found?
A)Right down the middle
B) Along the eastern coast of North America
C)Along the western coast of Eurasia
plz hurry
Answer:
B )along the eastern coast of north america
b . along the eastern coast of north america
the chart shows weather data for a city
If a individual posses an allele for a diease but does not have the diease this person is known as a
Answer:
The correct answer is - carrier.
Explanation:
If an individual posses an allele for the disease and does not affect by the disease such a person known as the Carrier of the disease. Such a person only posses one allele of the mutated gene or disease gene and a normal gene in their genotype.
They are mostly heterozygous for the particular trait or disease, therefore, do not get affected by the only allele of the disease gene. Generally, such a disease found in a recessive gene that causes it to masked in a person and carried to the next generation.
choose the correct letter
a convex lens made of transparent tissue located on the outside of the eye
A) IRIS
B) PUPIL
C) CORNEA
D) ROD CELLS
Answer:
cornea
Explanation:
it is d it is convex lens made of transparent tissue located on the outside of the eye
NEEED HELP PLZZZZZZZZZZZZZ
Jessica runs between 3 and 7 miles per day. It takes Jessica 12 minutes to run one mile. What is a reasonable amount of time that Jessica spends running every day?
A.
36 minutes
B.
120 minutes
C.
84 minutes
D.
60 minutes
plsssss answer this question
Answer:
rainy-
Explanation:
Which statement best describes energy transfer in a food web
(1) energy is transferred to consumers, which convert it to nitrogen and use it to make amino acids.
(2) Energy is transferred to converted into oxygen and transferred to consumers
(3) Energy from the sun is stored in green plants and transferred to consumers.
(4) Energy transferred to consumers, which use it to produce food.
Answer:
4)
Explanation:
when dealing with the food chain and how the energy transfer out through the food chain. you have to first think about the supporters of the food chain which are the consumers see the consumers consume as much as they can to be able to reduce the food when they able to reduce the food it balances out between the other supporters in the food chain for example the consumers, producers, decomposers
