Answer:
C because a flat paper is spread out while a crumbled paper has more gravity but little air resistance
What is the main function of gas exchange
A) To remove carbon dioxide and supply oxygen to
the body
B) To remove oxygen from the body
C) To supply carbon dioxide and remove oxygen
from the body
D) To supply water to the body cells
Answer:
A.
Explanation:
We exhale carbon dioxide and inhale oxygen.
Answer:
Gas exchange allows the body to replenish the oxygen and eliminate the carbon dioxide So the answer is A
What is matter? help mee
Answer:
Matter is anything that has mass and takes up space.
Explanation:
Matter can be anything that are solid, liquid or gas. However, anything that does not have mass and take up space, such as light, are not matter.
Answer:
A matter is anything that occupies space or mass, for example, our body is a matter because it is taking up space. Matters can be solid, liquid, or gas
Which statement about the behavior of
living things is true?
Answer:
whats the options
Explanation:
?
When a strip of bark is removed all the way around the trunk of a tree, the tree dies. Explain why.
Answer:
Complete girdling (the bark removed from a band completely encircling the tree) will certainly kill the tree. The reason for damage due to girdling is that the phloem layer of tissue just below the bark is responsible for carrying food produced in the leaves by photosynthesis to the roots.
A human cell in prophase of mitosis can be distinguished from a human cell in prophase I of meiosis by the presence of (A) paired homologous chromosomes in the meiotic cell. (B) kinetochores in the mitotic cell (C) a spindle in the mitotic cell (D) twice as many chromosomes in the mitotic cell (E) half as many chromosomes in the meiotic cell
Answer:
B
Explanation:
A human cell in prophase of mitosis can be distinguished from a human cell in prophase I of meiosis by the presence of paired homologous chromosomes in the meiotic cell.
CELL DIVISION:
Cell division involves two processes namely: mitosis and meiosis. Mitosis results in two daughter cells that are genetically identical to one another. Meiosis, on the other hand, results in four daughter cells that are genetically different from one another. Mitosis and meiosis as types of cell divisions involves phases namely: prophase, metaphase, anaphase and telophase. The major difference between prophase of mitosis and prophase I of meiosis is that homologous chromosomes, which are similar but non-identical chromosomes from each parent, are paired.Learn more about prophase of mitosis and meiosis at: https://brainly.com/question/23718222?referrer=searchResults
47. In each of your cells how much of the DNA is the same?
Answer:
Almost every cell in the human body has the same DNA. Most DNA is in a cell's nucleus (nuclear DNA), but a small amount of DNA can also be found in mitochondria (mitochondrial DNA).
Hope it helps!What does the diagram represent
Answer:
I wanna say C but im not sure.
Explanation:
what the number 42 to u
ill give brainliest just please answer. which map would you use if you wanted to determine the region of the united states that produces the most natural gas?
Answer:
In 2013, the country produced 30.0 trillion cubic feet (TCF) of marketed gas. With 7,545 billion cubic feet (BCF), the leading gas-producing area in the United States in 2013 was Texas, followed by Pennsylvania (3,259 BCF), and Louisiana (2,407 BCF).
In the Hershey/Chase experiment phage proteins and DNA were radioactively labeled and allowed to inject coding material into bacteria. It was found that only radioactively labeled DNA was present in the bacterial cells which had been transformed. If radioactively labeled protein had been discovered in the transformed cells, what would this have told us about the molecules acting in genetics
A virus is made of two main components. A proteic capsid and genetic material. The Hershey/Chase experiment demonstrated that the virus introduces it's genetic material(DNA) inside the host cell to force it to make more viruses. This proved that genetic information is stored in DNA. If the marked proteins were found in the host cell that would have meant that proteins carry genetic information which they don't.
Coral reefs are found in coastal ecosystems. Coral reefs have a high biodiversity. Which statement is true about coral reefs?
Answer:
they have a high biodiversity
Answer:
They have a high biodiversity.
Explanation:
The reviewers suggested that you think more carefully about your hypothesis and experimental design. For a chemical to make a good cancer treatment, it is not enough that it harms cancer cells. The chemical needs to have a selective effect on cancer cells--that is, it needs to harm cancer cells much more than it harms normal (noncancerous) cells.
You decide to run a new experiment to test the hypothesis that the fungus chemical harms cancer cells selectively. In this controlled experiment, you will test both cancer cells and normal cells under identical conditions. What data would support this hypothesis?
Predict the expected results for cancer cells and normal cells by choosing the correct graph lines and dragging them onto the two graphs.
Answer:
plz don't post like this
Answer:
plz don't post question like this. I am getting scare
How do the colors of light affect photosynthesis? Which color was most efficient, medium and least?
Answer:
blue is the most efficient while green is the least efficient
Explanation:
It is well known that different photosynthetic pigments can absorb light at different wavelengths. Thus, the amount of light absorbed during photosynthesis depends on the color of the source light. The leaves have green color because chlorophyll is a photosynthetic pigment that absorbs light at all wavelengths and reflects green light. The best wavelengths are those at 430–450 nm (blue range) and 600–700 nm (red range), thereby photosynthesis is most efficient when plants are illuminated by light sources that emit blue and red lights. Moreover, sources that emit light at the green wavelength are least efficient for photosynthesis.
Neurotransmitters are defined by four essential characteristics. These are: Neurotransmitters are synthesized within presynaptic neurons. Depolarization of a neuron results in the release of a neurotransmitter, which exerts a multitude of actions on the postsynaptic neuron. Their action on postsynaptic neurons can be replicated by administering a drug that mimics the activity of the endogenous neurotransmitter. Their action in the synaptic cleft is terminated by a specific action. A, C, and D only
Answer:
The correct answer is A, C, and D only.
Explanation:
A neurotransmitter is a biomolecule, generally synthesized by neurons, which is poured from vesicles in the presynaptic neuron into the synaptic gap and produces a change in the action potential of the postsynaptic neuron. Depending on the nature of the neurotransmitter, this can be synthesized in the neuronal soma or in the nerve endings. Some neurotransmitters are synthesized directly in nerve endings thanks to enzymes that have been synthesized in the soma and transported to these endings. Through the interior of the axon flows a current of substances free or enclosed in vesicles, which can be precursors of both neurotransmitters or their enzymes, called axonal flow.Another characteristic of the transmitter function in each of the substances commonly accepted as neurotransmitters is that when administered exogenously as a drug that in reasonable concentrations perfectly mimics the effects of the endogenously released transmitter.
Neurotransmitters should be defined by four essential characteristics. It involved the A, C, and D only.
What are Neurotransmitters?Neurotransmitters refer to the chemical messengers in the body that should transform the message from the nerve cell. Also, it should be synthesized in neurons and stored in the presynaptic terminal. It should be the vital attribute at the time when the chemical should mimic the activity of endogenous due to which it gets a similar response. Also it eliminates the activation site.
Learn more about neurons here: https://brainly.com/question/16324614
in this 4 trophic level food chain, the penguin will bioaccumulate the most toxin due to the quantity of Krills it needs to eat
Answer:
yes what you put is all in the food chain
Explanation:
PLEASE HELP
Which way does the warm air particles flow in the northern hemisphere?
A.east-west
B.north-south
C.north-east
D.south-north
Answer:
south-North
:)
Answer:
D: South-North
Explanation:
I took the quiz
define compound and explain also
1. What are viruses made up of?
Answer: bateria
Explanation:
Answer: A virus is made up of a core of genetic material, either DNA or RNA, surrounded by a protective coat called a capsid which is made up of protein.
Explanation:
ANSWER ASAP PLEASE
What impact do trees have on the food web?
Answer:
Abiotic factors such as latitude and temperature can impact biotic aspects of food web structure like the number of species, the number of links, as well as the proportion of basal or top species. These biotics factors can in turn influence network-structural aspects like connectance, omnivory levels or trophic level. In this way, plants make, or produce, the beginnings of most of the food energy on Earth. This is why plants are called producers. They use some of the food energy to carry out their own functions, and store the rest of the energy in their leaves, stems, roots and other parts.
Explanation:
Answer:
"plants make, or produce, the beginnings of most of the food energy on Earth. This is why plants are called producers."
- Sac Tree Foundation
"Trees contribute to their environment by providing oxygen, improving air quality, climate amelioration, conserving water, preserving soil, and supporting wildlife."
- Sava Tree
i need help ;(((((((
Answer:
A. Chloroplast
Explanation:
Chloroplast, often known as the kitchen of the cell, is where photosynthetic reactions combining light energy from the Sun into chemical energy [Glucose] that is stored as food. They contain a Green Color Pigment called 'Chlorophyll' that initiates the process, but Chlorophyll isn't an organelle, in fact, it is one of the elements of Chloroplasts. Similarly, Thylakoids are membrane-bound elements inside Chloroplast that aid in photosynthesis. While Mitochondria, [Power Houses Of Cells] generate energy for various processes in cells through ATP-Generations.
A pedigree chart is used to _______. (3 points)
A: predict percentage of offspring with a trait
B: predict genotypic probabilities
C: track inherited traits through generations
D: identify the genotype of parents
Answer:
A pedigree chart is used to track inherited traits through generations (option C).
Explanation:
A pedigree chart is a graphical representation, similar to a family tree, showing specific traits present in parents, children and relatives. It is a diagram commonly used in genetics.
A certain phenotype, product of genetic traits, is represented in a pedigree chart by pre-established symbols, which is useful for tracking inherited traits through generations.
The other options, predict percentage of offspring with a trait , predict genotypic probabilities or identify the genotype of parents require a Punnett square to be identified.Answer:
c is the ansewer because i got this on my test
Explanation:
Manure can be used to create beneficial soil depletion.
True
False
What product has wheat flour as its substrate and yeast as the microbe? *
Answer:5
Explanation:
Wheat flour contains starch. The starch is hydrolysed to glucose. Glucose is used by yeast(saccharomyces cerevisae) to make ethanol.
C6H12O6(glucose from wheat flour)---(yeast)-->2C2H5O(ethanol)+2CO2
Ethanol is the main product
HURRY PLEASE. Provides energy to an organism to conduct cellular processes A. water B. air C. food D. living space E. carbohydrates
Answer:
Carbohydrates
Explanation:
Through photosynthesis, certain organisms convert solar energy (sunlight) into chemical energy, which is then used to build carbohydrate molecules. The energy used to hold these molecules together is released when an organism breaks down food. Cells then use this energy to perform work, such as cellular respiration.
When the chestnut blight fungus, Cryphonectria parasitica, first entered Harvard Forest its population was growing exponentially. Anita MacTavish, a graduate student working on chestnut blight, estimated that the ANNUAL per capita growth rate (r) of the fungus 3.2 new cankers per year. Of Cryphonectria parasitica population size (Measured in number of cankers) was 313 in 1935, predict the population size in 1938.
Answer:
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Describe what happened to beaver colonies after 1995 (when wolves were reintroduced). Then describe the relationship between the number of beaver colonies and the willow tree ring area.
Answer:
Decreases.
Explanation:
Decrease occurs in beaver colonies when wolves were reintroduced in the area because wolves feed on beaver and as a result, the population of beaver decreases. There is a direct relationship between the number of beaver colonies and the willow tree ring area because willow tree is a source of food for beavers so if willow tree are more in the area, more food available for the beaver and they will increase in number.
When does cell differentiation occur?
when cells express different genes
when cells express all genes
when cells express the same gene
when cells do not express genes
Answer:
The answer is when the cell express different genes.
Explanation:
Cell differentiation is the process when a cell is changed from one cell type to an other and brings more complexity to the system. A cell before differentiation possess all the genes however their expression in turned off. When some external or internal factors trigger the gene expression it starts the cell differentiation. A multicellular organism undergoes several rounds of cell differentiation during its development. Although cell differentiation changes the size, shape and metabolic activity but the genetic makeup or DNA is never changed during cell differentiation.
Answer:
when cells express differnt genes
Explanation:
How does an increase in pressure affect a rock’s melting temperature?
Answer:
As pressure on a rock increases, its melting point increases as well. ... As water content increases, the melting point decreases. Partial Melting. The process whereby some minerals melt at low temperatures while other minerals remain solid.
Explanation:
I got it off on quizlet
groups of specilized cells working together are called
Answer:organs
Explanation:
What is a cyclone called that generates winds of 200 kmph and rotates in a counter-clockwise movement in the Pacific Ocean?
1 a typhoon in the southern hemisphere
2 a hurricane
3 a cyclone
4 a typhoon in the northern hemisphere
Answer:
a typhoon in the northern hemisphere.
Answer:
typhoon in the northern hemisphere
Explanation:
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