choose the correct answer
1) the cell organelle which is present only in plant cell( )
a) mitochondria. b) chloroplast
c) ribosomes. d) nucleus
Answer:
B
Explanation:
Chloroplasts are organelles found in plant cells and eukaryotic algae that conduct photosynthesis. Chloroplasts absorb sunlight and use it in conjunction with water and carbon dioxide gas to produce food for the plant.
Answer:
b)
Explanation:
Chloroplasts are present in plant cells and not in animal cells, they also contain a pigment called chlorofyll which absorbs light and helps in photosynthesis
What would happen if we didn't have subcutaneous fat
Answer:
What would happen if we didn't have subcutaneous fat?
Ans) For instance, while fat has been blamed for heart attacks, strokes,diabetes, and a host of other serious illnesses, researchers are finding that low fat levels may make us even more vulnerable to death from those conditions. In many studies, being overweight actually lowers morality from disease.
Hope it's helpful to u...Explain how the heliocentric model has been modified with the help of telescopes and probes ?
Answer:
They collect more information.
Explanation:
The heliocentric model has been modified with the help of telescopes and probes because telescopes and probes collect more accurate information about the solar system and planets. Due to information collected from these instruments, scientists are able to modify the heliocentric model more accurately. So we can conclude that with the help of telescopes and probes, the heliocentric model has been modified.
Telescopes and probes gather more accurate data about the solar system and planets. Due to data collected from these instruments, scientists are able to modify the heliocentric model more accurately.
What is a heliocentric theory?
Heliocentrism is a cosmological model in which the Sun is assumed to lie at or near a central point while the Earth and other bodies revolve around it.
So we can conclude that with the help of telescopes and probes, the heliocentric model has been changed.
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An enzyme catalyzes a chemical reaction, where A and B are joined to yield C.
What statement is correct about this reaction?
- A and B are products.
- B and C are substrates.
- A and C are products.
- A and B are reactants.
The answer is B and C are substrates
list the biotic and abiotic factors in this image
Answer:
Biotic:
BearMooseTreesEagleBirdFishDucksOtterFernsGrassButterflyAbiotic:
RocksWaterCloudsMountainExplanation:
Remember that biotic factors are living organisms while abiotic factors are things that are non living organisms.
Hope this helps.
5. What is true about energy transfer in communities?
A. It is 100 percent efficient.
B. It moves from consumer to producer.
C. Most of the energy in a trophic level is lost as heat.
D. Most of the energy in a trophic level transfers to one above it.
Answer:
D
Explanation:
Most of the energy in a trophic level is lost as heat. Therefore, option C is correct.
How does energy transfer from one trophic level to another trophic level?As energy moves from the primary producers through the various trophic levels of consumers and decomposers, significant amounts of energy are lost from the ecosystem between one trophic level and the next level.
The second law of thermodynamics, which states that whenever energy is changed from one form to another, there is a tendency towards disorder (entropy) in the system, is the primary cause of this loss.
When the organisms from one trophic level are consumed by the next level, this means that a significant amount of energy is lost as metabolic heat in biological systems. Therefore, option C is correct.
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Please help —————//////
Answer:
okahdbd fb fbff
Explanation:
ng nfnfgngngnngngngngnfnfnv dnf. fbf f fn
Obtaining nutrients from the
environment and breaking them down
for transport...
a.Synthèsis
b.Nutrition
c. Transport
d.Simple Sugars
Answer:
a
Explanation:
Answer:
A
Explanation:
Find the variables in the following simple experiments and state which variable is the
independent variable, dependent variable, and the controlled variables.
1. Experiment to find out if tomato plants grow faster in full sunlight or partial sunlight.
2. Experiment to find out if red ants prefer honey over sugar as a source of food.
3. To find out if where fish survive better in rainwater or chlorinated water from faucet.
4. To find out if chicken grow faster if they are fed with pure corn or pure rice.
5. An experiment to find out if corn plants grow better in sand or clay soils
Answer:
1. The dependent variable is the tomato plant because the tomato plants depends on the light to for the plant to grow. The independent variable is the light. The light does not depend on anything. In this experiment the variable that is being controlled is the light because the experimenter is controlling how much light the tomato plant is getting.
2. The dependent variable are the red ants because the red ants are going to determine(depend) to see if they like honey or sugar better. The independent variable are the honey and sugar because honey and sugar are a type of food and it does not depend on anything. The controlled variable is the food because the experimenter is controlling what the red ants like for food.
3. The dependent variable is the fish because the fish depends if they will survive in rainwater or chlorinated water. The independent variable is the rainwater and chlorinated water because the types of water does not depend on whether or not the fish survives. The controlled variable is the types of water (rainwater, chlorinated) because the experimenter is controlling the water that the fish will be exposed to.
I hope that this helps.
10. Viruses and cells are different in many ways. In which of these ways are viruses and cells most similar?
1. composition of outer covering
2. composition of genetic material
3. stages of reproduction
4. stages of life cycle
Answer:
the answer is 1
Explanation:
Viruses and cells are different in many ways but in composition of outer covering these ways they same to each other. Thus, option A is correct.
What are viruses?Viruses are defined as the microorganisms who needs to infect the living host cells, in order to replicate as well as reproduce. These infectious agents has been capable of the injecting as well as infecting all the life forms the present, including the plants, or the animals and bacteria.
The viruses were not just among the first organisms that has been evolve as in the order to replicate themselves and it will continue through the time they needed other organisms' cell. Aerobic bacteria has been the bacteria that has been need oxygen just perform cellular respiration, and that can survive and grow in the oxygenated environment, while anaerobic bacteria has been the bacteria that do not require oxygen for their growth.
Therefore, Viruses and cells are different in many ways but in composition of outer covering these ways they same to each other. Thus, option A is correct.
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The spongy material in the center of a bone is called the bone marrow.
True or False
I would say that is true.
Answer:
it is true
Explanation:
in the bone there are 3 layers the outer layer is made of thin membrane
the middle layer is smooth and hard
the inner layer looks like a sponge is very hard and strong and it protects the center of the bone marrow, which looks like a thick jelly
What is the definition of a Missionary
A religious community run by monks
Someone who prays five times a day
Christians who left home to convert foreign people to Chrissianity
A man or woman taking a pilgrimage to Mecca for their Hai
с
d
Answer:
Christian's who left home to convert foreign people to christianity
Explanation:
it was there mission
PLSSS HELP ME ASAPPPP Name the organization
The original cell theory has been expanded upon since it was first developed to include further additions due to advances in research on the cell. Which statements were not in the original cell theory, but are further explained by the modern cell theory? Check all that apply.
All cells are similar in structure and function.
Cell contains hereditary information that is passed from cell to cell during cell division.
Living cells can be created from dead cells.
All cells perform similar metabolic activities.
Answer:
The Correct answer is
B. Cell contains hereditary information that is passed from cell to cell during cell division.
D. All cells perform similar metabolic activities.
Explanation:
Hope this helps!!!!!
The statements 'the cell contains hereditary information that is passed during cell division' and 'all cells perform similar metabolic activities' were NOT in the original cell theory.
The cell theory is a universally accepted biological theory initially developed by Matthias Schleiden and Theodor Schwann (1839).The original statements of the cell theory include:
The cell is the basic structural and functional unit of all organisms.All life forms are composed of cells.All cells derive from preexisting cells, which means that the origin of all organisms can be traced to a primitive ancestral cell.In conclusion, the statements 'the cell contains hereditary information that is passed during cell division' and 'all cells perform similar metabolic activities' were NOT in the original cell theory.
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Several groups of students were comparing the processes of mitosis and meiosis. Each group came up with a different answer for how the two processes are different. Which of the groups made a statement about mitosis and meiosis that is most correct?
Group 1, they said that mitosis is involved in the growth and repair of cells and undergoes cell division twice, while meiosis is involved in sexual reproduction and undergoes cell division once.
Group 2, they said that mitosis is involved in the growth and repair of cells and undergoes cell division once, while meiosis is involved in sexual reproduction and undergoes cell division twice.
Group 3, they said that mitosis is involved in sexual reproduction and undergoes cell division twice, while meiosis is involved in the growth and repair of cells and undergoes cell division once.
Group 4, they said that mitosis is involved in sexual reproduction and undergoes cell division once, while meiosis is involved in the growth and repair of cells and undergoes cell division twice.
Answer:
Trust it’s B
Explanation:
I took the test and studied
Answer
Explanation: Esla B
Which of the following situations
demonstrates a chemical change?
Answer:there is literally nothing to be answered there I can’t even see the objects that can be chemically changed
Explanation:
Answer:dry ice vaporizing, sugar and water mixing to create sugar water,
steam condensing on a mirror
Iron, reacting to water and oxygen to form iron oxide
Explanation:
A bird catches and tries to eat a caterpillar. The caterpillar has a bad taste, so the bird lets the caterpillar go. The next time it sees the same kind of caterpillar, the bird avoids eating it. Which best describes this behavior? trial-and-error learned behavior trial-and-error instinct behavior conditioned reflex behavior conditioned inherited behavior
Answer:
The correct option is trial and error learned behavior
Explanation:
A trial and error learned behavior is a type of behavior in which an organism attempts to or tries something new which makes it (the organism) accept the reality of that thing or situation. This means that if the attempt is successful or pleasurable, the organism will attempt it again and if it's not, the organism will avoid that thing.
This is what was described in the question with the bird trying to eat the caterpillar but found it unpleasurable which made it to start avoiding it afterwards.
Answer: A trial-and-error learned behavior
Explanasion
bird catches and tries to eat a caterpillar. The caterpillar has a bad taste, so the bird lets the caterpillar go. The next time it sees the same kind of caterpillar, the bird avoids eating it. Which best describes this behavior? trial-and-error learned behavior trial-and-error instinct behavior conditioned reflex behavior conditioned inherited behavior so that would be A trial-and-error learned behavior
PLEASE HELP!! WILL GIVE BRAINLIEST!!
Identify the correct term for each definition.
a. the bottom chamber of both sides of the heart
b. the dome-shaped muscle at the base of the chest cavity that contracts and lowers to draw oxygen into the lungs then relaxes and lowers to push carbon dioxide out
c. the liquid part of the blood
d. the protein that colors red blood cells and allows them to carry oxygen to the tissues
e. the passageway out of the body for urine
f. the top chamber of both sides of the heart
g. the tube that carries food to the stomach
h. the two branches of the windpipe that descend to the right and left lungs
i. muscles that operate completely outside of conscious thought
j. tiny blood vessels where pickup of wastes and delivery of oxygen and food takes place tiny filtering units in the kidneys
k. a waste product that is made up of leftover parts of used proteins and is high in nitrogen
l. urea and other waste substances that are collected in the bladder
Answer:
a-Ventricle
b-Diaphragm
c-Plasma
d-Hemoglobin
e-Urethra
f-Atria
g-Esophagus
h-Bronchi
i- Involuntary muscles
j-Glomerulus
k-Ammonia
l-Urine
PLEASE HELP QUICK!!!!!! WILL GIVE BRAINIEST!!!!!!
which material is a pure substance
Answer:
Examples of pure substances include tin, sulfur, diamond, water, pure sugar, table salt and baking soda. Crystals, in general, are pure substances. Tin, sulfur, and diamond are examples of pure substances that are chemical elements. All elements are pure substances.
Explanation:
May I have brainliest please? :)
Answer:
Nitrogen
Explanation:
If it's for edg I got it right :)
Which statement describes the role of the organism indicated by the blue arrow in the food web?
A - A primary producer that recycles organic molecules from sunlight
B - A secondary consumer that obtains its energy from the consumption of animals
C - A primary consumer that obtains its energy from the consumption of animals
D - A secondary consumer that recycles organic molecules by breaking them down
Answer:
Producers bring energy into the ecosystem by making organic molecules from sunlight or chemical compounds.
Explanation:
Answer: A secondary consumer that obtains its energy from the consumption of animals
Explanation:
the explanation is... i got it right
PLEASE HELP ASAP
If you discovered a cell that has no nucleus, no membrane bound organelles, and a wall, would you infer that it was a prokaryote or a eukaryote? Why?
Answer:
prokaryote
Explanation:
prokaryotes do not have a nucleus or membrane bound organelles, most prokaryotic cells have a cell wall
YALL THIS IS SO FREAKING HARD
WHAT DAY IS IT?
Answer:
Today is Monday, November 16, 2020.
It can be written as 11/16/2020 or 11/16/20.
It is the 321st day of the year out of 365 days.
ALOT OF POINTS MARKING PEOPLE AS BRAINLIST
Select the events that happen during Prophase (Select all that apply)
A:Chromosomes coil up B:Spindle fibers form C:Nuclear envelope disappears
D:Chromosomes line up in the middle
E:Sister Chromatids divide F:Chromosomes uncoil G:Nuclear envelop forms H:Spindle fibers disappear I:DNA replicates
Answer:
A, B, G, I
Explanation:
Newton's third law of motion states that for every action there is an equal and opposite reaction. Science teachers often model this law by showing what happens when two floating balls collide in a pool of water. What is the most likely reason that science teachers explain this law by modeling it?
Answer:
The law is an abstract idea that may be difficult to understand without seeing how it works.
Explanation:
Calculate the pH if the [H+] = (1 x 10-5).
Show Work by plugging information into the correct formula
Answer:
The pH value is 5.
Explanation:
I plugged in the values into the formula like so, -log((1x(10^(-5)))
Complete the following sentence.
Forty-five percent of ____ ____ nurses work in intensive care units.
Answer: im not really sure buti believe that is registered.
Forty-five percent of registered nurses work in intensive care unit.
Answer:
critical care nurses
Explanation:
Which is the end result of cytokinesis from a cell undergoing mitosis?
Answer:
two cells that have two identical copies of DNA
Explanation:
Answer: two cells that have two identical copies of DNA
Explanation:
Right on Edg.
A plant has been sprayed with a chemical that promotes abscisic acid and inhibits ethylene until the fruit has been exposed to artificial light (like light bulbs indoors). Explain what this would mean for fruits picked at a farm and then sold in stores.
Answer:
See the answer below
Explanation:
The first thing is that ethylene as a plant hormone primarily functions as a major driver of fruit ripening ahead of abscisic acid. Hence, a fruit that is unable to synthesize or prevented from synthesizing ethylene will not show any sign of ripening.
For, a plant sprayed with an ethylene inhibitor, its fruit will be prevented from ripening. However, if the synthesis of ethylene is stimulated by the exposure of the fruit to artificial light, the implication is that such fruit will appear ripened or otherwise depending on the store it is sold.
If the store has artificial light, in no time, ethylene production would be stimulated and ripening will commence. If otherwise, such fruit will not show any sign of ripening until it is purchased off the store and taken to a home adorned with artificial lights.
What happens to red blood cells in the following solutions
A) Salt water?
B) Distilled Water ie. Hypotonic solution?
C) Tap water ie. Isotonic Solution?
Answer:
A) The red blood cell will lose water and shrink
B) The red blood cell will gain water, swell and eventually burst; aka hemolysis
C) The red blood cell will fill up with water and burst