A. The respiratory system takes in oxygen. The circulatory system delivers the oxygen to cells.
The respiratory system is defined as the set of tissues and organs involved in the uptake of oxygen from the atmosphere and the release of carbon dioxide produced during aerobic respiration.
This gas exchange is also called breathing or external respiration. Thus the correct option is A that is the respiratory system takes in oxygen. The circulatory system delivers the oxygen to cells.
In which system lungs and heart are present?Lungs are present in respiratory system and heart is present in circulatory system.
The circulatory system is refers to as which delivers oxygen and nutrients to cells and takes away wastes. The heart pumps oxygenated and deoxygenated blood through blood vessels which include arteries, veins and capillaries.
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What evidence have you discovered to explain what structure surround a cell, such as an ostrich egg, and how these structures help a cell function
Answer:
plasma membrane
Explanation:
An ostrich egg is the largest egg of any living bird. The eggshell of an ostrich egg is shinny, glossy and is cream in color. It is more oval than the egg of a chicken.
The structure of a cell comprises of the components with their specific functions which is essential to carry out the various processes of life. In an eukaryotic cell, the outer lining is known as the plasma membrane. It helps to protects the cell and separates it from the surroundings environment.
The plasma membrane is made up of proteins as well as lipids and other fat like molecules.
What do we breathe out? What is the percentage of oxygen and carbon dioxide in our exhaled air?
What is the main source of Earth's light?
Answer:
The Sun
Explanation:
Answer:
The sun
Explanation:
The main source of light on Earth is the Sun. Sunlight provides the energy that green plants use to create sugars mostly in the form of starches, which release energy into the living things that digest them. This process of photosynthesis provides virtually all the energy used by living things.
equation of gaseous exchange in plants
Answer:
See the answer below
Explanation:
Gaseous exchange in plants involves the entering of oxygen and the exit of carbon dioxide in its place. It is an important process that helps sustains the life of plants, just like every other living organism. The oxygen that enters is utilized in the process of respiration during which carbohydrates are broken down to unlock their energy for metabolic activities.
Oxygen usually diffuses-in through the stomata while the carbon dioxide diffuses in the opposite direction. The summary of the gaseous exchange is summarized in the equation below:
Glucose (food) + Oxygen ---------> Carbon dioxide + water + energy
Or better still;
[tex]C_6H_1_2O_6 + 6O_2 --> 6CO_2 + 6H_2O + ATP[/tex]
Hello(: I need some help what is an
(Allele)
Answer:
An allele is a variant of a gene. Everyone has at least 2 alleles for every gene. Because of this, humans are known as diploid organisms.
Explanation:
Genes are the complex proteins that give us hereditary traits such as hair and eye color. But genes mutate, with at least 2 copies per single gene. These copies are known as alleles.
The diagram below shows fossils in three layers of rocks.
Which of these conclusions is most likely correct about the organisms found in the layers of rocks?
The organism in Layer A is more complex than the organism in Layer B.
The organism in Layer B is more complex than the organism in Layer C.
The organism in Layer C is a modern form of the organism in Layer B.
The organism in Layer A is a modern form of the organism in Layer B.
Answer:
The organism in Layer C is a modern form of the organism in Layer B.
Explanation:
Answer:c
Explanation:test
Distilled water (H2O) can be made from tap water by removing dissolved minerals and various other chemicals. How should each type of water be classified
What id one watt equal to?
Which of the following describes a positive feedback loop?
O When blood sugar concentration is too low, the endocrine system secretes hormones that increase blood sugar concentration to a normal level.
O When the body senses that the heart rate is very high, it secretes hormones that decrease the heart rate.
O When blood sugar concentration is too high, the endocrine system secretes hormones that decrease blood sugar concentration to a normal level.
O When someone is exercising intensely, the body secretes hormones that increase oxygen supply for cellular respiration.
Answer:
the answer is A when blood sugar contraction is to low
Explanation:
i took the test
The statement that describes a positive feedback loop is as follows: when blood sugar concentration is too low, the endocrine system secretes hormones that increase blood sugar concentration to a normal level.
What is positive feedback loop?A positive feedback loop is a feedback loop that occurs in nature when the product of a reaction leads to an increase in that reaction.
A negative feedback loop, on the other hand, occurs when increased output from the system inhibits future production by the system.
Therefore, the statement that describes a positive feedback loop is as follows: when blood sugar concentration is too low, the endocrine system secretes hormones that increase blood sugar concentration to a normal level.
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Tara is making a model of
the solar system for her class project. Which of
the following choices states the correct order in
which she should put the planets, starting with
the one closest to the sun
A: Earth, Mercury, Venus, Mars, Saturn, Jupiter, Neptune, Uranus
B: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune
C: Venus, Mercury, Earth, Jupiter, Neptune, Uranus, Mars, Saturn
D: Mars, Mercury, Earth, Jupiter, Venus, Neptune, Saturn, Uranus
Answer:
B! That's the order of the planets!
Help me ASAP please I’m being timed
Answer:
i think it is 4 but i am not sure
Explanation:
Answer:
From common sense I would select B. But I have not gotten to biology, so I do not know for sure. if I get it wrong, I am truly sorry.
TRUE OR FALSE: Phospholipids that are a part of the nuclear envelope (membrane around the nucleus) can easily move from one part of the cell to another, and may ultimately become part of the cell membrane, the ER, a vesicle membrane, etc. In fact, any phospholipid may be called a "cellular tourist" because it is able to move about to virtually any part of a cell and can even become a part of a cell in a different region of the body! (EXPLAIN WHY)
Answer:
False, because phospholipids are a type of lipids and the nuclear envelope contains nucleic acids.
Explanation:
Hope this helps.
It is true that phospholipids that are a part of the nuclear envelope (membrane around the nucleus) can easily move from one part of the cell to another, and may ultimately become part of the cell membrane, the ER, a vesicle membrane, etc.
What is nuclear envelope made of?The nuclear envelope is made up of two concentric lipid bilayer membranes separated by a 20-40 nm intermembranous space.
In many places, the outer membrane is joined to the rough endoplasmic reticulum. The outer membrane of the nuclear envelope, like the rough ER, is dotted with ribosomes.
The nuclear envelope is made up of two membranes: an outer and an inner phospholipid bilayer. The lumen of the rough endoplasmic reticulum is connected to the thin space between the two layers (RER).
Nuclear pores, which are small channels that run across the nuclear envelope, allow substances to enter and exit the nucleus.
Each pore is lined by a group of proteins known as the nuclear pore complex, which regulates which molecules can enter and exit.
Thus, the given statement is true.
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Which of these is a distinguishing characteristic that can be inherited? *
A. gene
B. cross
C. punnett square
D. heterozygous
Answer:
a. Gene
Explanation:
Gene is a distinguishing characteristic that can be inherited. Therefore, option A is correct.
What are genes?The fundamental structural and operational component of heredity is a gene. DNA is the component of genes. Some genes serve as blueprints for the synthesis of proteins. A gene is actually pretty unremarkable in terms of its physical appearance. Essentially, it resembles any other bit of DNA. They form our genotype and decide our phenotype.
The 23 pairs of chromosomes in cell nuclei plus a tiny DNA molecule present in each mitochondrion make up the human genome, which is a full set of nucleic acid sequences for humans. There are two types of genes that are coding genes and non-coding genes.
Gene is a distinguishing characteristic that can be inherited. Therefore, option A is correct.
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6. What is the function of the vacuole in a cell?
A.)transports proteins to other locations in the cell
B.) breaks down food and releases energy
C.) stores water, waste products, and food
D.)manufactures proteins
Answer:
c, vacuoles are storage spaces
Answer:
[tex]vacuole \: in \: a \: cell \: stores \: water, \\ \: waste \: products ,\: and \: food.[/tex]
During cellular respiration, the bonds of food molecules are broken, so energy can be released to fuel other cellular processes. In order for this to occur, which of the following statements must be true? A. The energy in the new compounds that are formed must be equal to the energy in the bonds of the food molecules. B. New compounds with lower-energy bonds must be formed when the high-energy bonds in food molecules are broken. C. New compounds with higher-energy bonds must be formed when the low-energy bonds in food molecules are broken. D. The new compounds that are formed must be more complex than the food molecules that were broken down.
Answer:
The correct answer is B. New compounds with lower-energy bonds must be formed when the high-energy bonds in food molecules are broken.
Explanation:
During cellular respiration the bonds of food molecules are broken so energy can be released to fuel other cellular processes in order for this to occur which of the following statements must be true a the new compounds that are formed must be more complex than the food molecules that were broken
Do you agree with this quote? Explain your reasoning using your understanding of the genetics of skin color.
Answer: No
Explanation:
There is no quote to see therefore I cannot agree.
Plants experience _____ gravitropism when their roots move towards the center of the earth.
A.positive
B. negative
Answer: Positive
Explanation:
Roots growing downward in the soil toward the center of the Earth are manifestations of positive gravitropism.
In general, how might choosing a small sample size affect a scientific investigation?
A. A small sample size is more precise than a large sample size.
B. A small sample size is not as reliable as a large sample size.
C. A small sample size is less expensive than a large sample size.
D. A small sample size has fewer dependent variables than a large sample size.Following the War of 1812, the United States reached a number of agreements with foreign countries. Match the parts of each
Answer:
a small sample size is not as reliable as a large sample size
Explanation:
what is a tetrad? snd why are they important feature of mitosis
Answer: a group or set of four
Explanation: tetrad occurs during the first phase of meiosis
Answer:
a group or set of four
Explanation:
(brainliest if right!) How is the dispersive model different from the semiconservative model of DNA replication?
1. In the dispersive model, each strand of both daughter molecules contains a mixture of old and newly synthesized DNA, and in the semiconservative model, each new double helix consists of one old and one new strand.
2. In the dispersive model, the old double helix is degraded, and in the semiconservative model half of its nucleotides are used in the construction of two new double helices.
3. In the dispersive model, one of the two resulting double helices is made of two old strands, and in the semiconservative model the other is made of two new strands.
4. In the dispersive model, one strand of the new double helix is made of DNA, and in the semiconservative model the other strand is made of RNA.
need help biology i have no clue
Answer:
I believe it is Moelcule 2 but I may be wrong
Explanation:
Molecule 1 shows things related to ATP, and DNA is made with Ribosomes. So one can assume it's 2
A nucleoside has two parts: a pentagonal sugar (deoxyribose) and a nitrogenous base (in color). When a nucleoside is joined to a phosphate, it is called a nucleotide.
How many different nitrogenous bases do you see?
Answer:A nucleoside has two parts: a pentagonal sugar (deoxyribose) and a nitrogenous base (in color). When a nucleoside is joined to a phosphate, it is called a nucleotide . Note: The names of these nitrogenous bases are adenine (red), cytosine (yellow), guanine (blue), and thymine (green).
Explanation:
Answer:
Just to add the pairs go like
Explanation:
Adenine always pairs with Thymine and Cytosine pairs with guanine
Recessive traits appear only when an organism is
Answer:
If it carries two identical copies of the recessive trait.
Explanation:
What are two reasons why cell division is important to living things?
Answer:
Explanation:
repair of damaged tissues healing and regeneration,Hope this helps
Which statement about infiltration is TRUE? Group of answer choices groundwater is an unsafe (dangerous) source of water not meant for drinking Groundwater can remain in subsurface storage for long periods of time groundwater can NEVER return to the surface groundwater will ALWAYS discharge into a body of water
Answer: Groundwater can remain in subsurface storage for long periods of time.
Explanation:
The ground water is the water reservoir that gets accumulated beneath the earth crust due to the accumulation of water that seeps into the soil and rock due to the absorption by water bodies river, lakes, ponds, oceans, and rain or any kind of precipitation. The groundwater remains as a subsurface storage of water until the site of groundwater is searched and water is extracted from it for household, agricultural or industrial purposes.
PLEASE PLEASE PLEASE HELP ME WITH THIS!! ONCE I FIGURE OUT HOW I'LL MARK BRAINLIEST (or however you spell it)!!
Answer:
1st segment: 3rd answer choice
2nd segment: 1st answer choice
3rd segment: 4th answer choice
4th segment: 2nd answer choice
5th segment: 5th answer choice
You want to determine what vehicle will get you to school in the fastest amount of time. Each day at 6:30am, you drive a different vehicle: a Ferrari, a
Nissan 350ZX, a Mazda RX8, and a Neon SRT4. Your results state that the Ferrari takes you the least time to get to school. The dependent variable in
this experimentis
A.the time that you leave each day (6:30am)
B.the type of vehicle
C.the time that it takes you to get to school
D.the route that you take each day
Answer:
The correct answer would be - option C. the time that it takes you to get to the school.
Explanation:
The dependent variable is the factor or variable in any research or experiment is the variable that depends on the independent variable which means it changes with the change in the independent variable.
Here the time the different vehicle takes to get to the school is a dependent variable as it depends on the fact that which vehicle is using and changes with the change in the type of vehicle.
WILL GIVE BRAINLIEST
How does the process of natural selection account for the diversity of organisms that Darwin observed on the Galapagos Islands?
Answer:
Since each island is very different, birds from each of these islands all have different beaks, colorations, and sizes depending on the natural environmental factors surrounding their island.
Explanation:
I would also add in how birds had to adapt with different beak lengths and sizes in order to be able to get the food type that was most abundant. Natural selection was abundant in this case if one food source (say small seeds) was scarce, a bird with a small beak 1. Had very little if no small seeds to eat and 2. If there were large nuts that required breaking open (ability with birds for larger beaks to do so), the small bird could not break them open and then would unfortunately probably starve to death. Thus, natural selection occured so the birds with the large beaks were able to carry on their traits while the birds with the small beaks did not have as great of an opportunity (if not opportunity) to carry on their traits.
Since each island is very different, birds from each of these islands all have different beaks, colorations, and sizes depending on the natural environmental factors surrounding their island.
Sedimentary rocks with ripple marks suggest that the rocks formed
A. someplace where wind crossed over wet sediment while it was forming.
B. when an ancient animal swam over them.
C. from shell fragments of ancient sea-dwelling animals.
D. when wet mud dried and shrank.
Answer: A
Explanation: Ripple marks are sedimentary structures and indicate agitation by water (current or waves) or wind.
Plants experience_____
thigmotropism when they use a fence to help stabilize their stems.
A. positive
B. negative