Answer: its A
Explanation:
DONT PUT SPAM ANSWERS ON MY QUESTION
Which best describes the flow of oxygenated blood through the heart?
Question 1 options:
Left pulmonary veins, right atrium, right AV valve, right ventricle, aortic semilunar valve, aorta
Pulmonary veins, left atrium, left AV valve, left ventricle, aortic semilunar valve, aorta
Superior vena cava, left atrium, left AV valve, left ventricle, pulmonary semilunar valve, left pulmonary artery
Superior vena cava, right atrium, right AV valve, right ventricle, pulmonary semilunar valve, left pulmonary artery
Answer:
Explanation:
Blood enters the right atrium and passes through the right ventricle. The right ventricle pumps the blood to the lungs where it becomes oxygenated. The oxygenated blood is brought back to the heart by the pulmonary veins which enter the left atrium. From the left atrium blood flows into the left ventricle.
The correct option that describes the flow of oxygenated blood through the heart is B, Pulmonary veins, left atrium, left AV valve, left ventricle, aortic semilunar valve, and aorta.
The left atrium is where oxygenated blood enters the heart after traveling from the lungs to the heart via the pulmonary veins. The left AV (atrioventricular) valve, also referred to as the mitral valve, allows blood to pass from the left atrium into the left ventricle.
The aortic semilunar valve, the body's primary artery that carries oxygenated blood to all the organs and tissues, is opened as the left ventricle contracts, pumping blood out into the body.
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All of the following are reasons that Mendel chose the pea plant as a model system for his studies EXCEPT ________.
The group of choices is:
peas have a relatively short generation time
peas produce large numbers of seeds
he could control which parents were involved in mating
peas only reproduce by cross-fertilization
peas have many polymorphic traits
Answer:
The correct answer is - peas only reproduce by cross-fertilization
Explanation:
Pea plants not just produced by cross-pollination but self-pollination is also one of the reproduction methods present in it. Pea plants have many type of characteritics or traits that can be controlled by the researcher in parent plants during the mating process.
The generation is relatively short which helps in the study the pattern of inheritance of the traits up to several generations.
Thus, the correct answer is - peas only reproduce by cross-fertilization
Mendel choose the pea plant for his experiment. The correct option is D. All the reasons given are correct except peas only reproduce by cross-fertilization.
Reason Mendel choose the pea plants:
The generation time of the pea plant is less.They produce large numbers of seeds They have many polymorphic traits.Pea plants also reproduce by the self- pollination.
Therefore, All the reasons given are correct except peas only reproduce by cross-fertilization.
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In the lab, Gregory is using a substance that has the same composition throughout. Hele separates the substance
into a liquid and solid using a physical process. Based on this description, Gregory's substance is a(n)
A
element
B
compound
heterogeneous mixture
D
solution
Answer:
D Solution
Explanation:
took the quiz on Flocab
PLEASE HELP!!!
What characteristics describe the solutes in the NaCl solutions in this activity?
Select all that apply:
-small
-large
-non-polar
-polar
-ionic/charged
(Select two)
Answer:
i think is
1.polar(because salt dissolves in water )
2.ionic/charged (salts are ionic compounds)
Explanation:
NaCl is salt
Conclusions based on an experiment are most likely to be accepted when
Answer:
A) they are consistent with experimental data and observations
This is correct. Tested it... Pls mark me brainliest!! Have a marvelous day!!
Name the terrestrial planets. in order.
How does surface tension work with water molecules?
Answer:
Surface tension in water owes to the fact that water molecules attract one another, as each molecule forms a bond with the ones in its vicinity. At the surface, though, the outmost layer of molecules, has fewer molecules to cling to, therefore compensates by establishing stronger bonds with its neighbors, this leading to the formation of the surface tension.
Surface Tension of Water . The surface tension of water is 72 dynes/cm at 25°C . It would take a force of 72 dynes to break a surface film of water 1 cm long. The surface tension of water decreases significantly with temperature as shown in the graph. The surface tension arises from the polar nature of the water molecule.
Explanation:
PLEASE HELP ME THE PERSON WITH THE RIGHT ANSWER WILL GET BRAINLESS
Which phrase justifies why the theory of evolution is a theory and not a law?
A)Describes the relationship between an organism and its environment
B)Makes accurate predictions based on only a small amount of empirical evidence
C)Explains diversity based on the principle of natural selection
D)Cannot be modified with the discovery of new evidence
Answer:
I think it is D
Explanation:
Because if new evidence cannot be added to it then it is only based on a small amount of evidence. And if new evidence proves it invalid or wrong then it is just a theory then.
Answer:
A. Describes the relationship between an organism and its environment
Explanation:
what experminental erros do you expect to encounter when developing an experiment involving hot water
Answer:
The correct answer would be - unstable water temperature as heat lost with time.
Explanation:
Heat is a physical property that continuously decreases with time so in any experiment, if hot water is involved it might lose its heat with time so there will be less temperature than the initial of the experiment or when it has been heated.
Heat can be lost to its surrounding or lost by in close contact with other components of the experiment like container.
When light is reflected, what determines the angle of reflection?
Answer:
The normal line divides the angle between the incident ray and the reflected ray into two equal angles. The angle between the incident ray and the normal is known as the angle of incidence. The angle between the reflected ray and the normal is known as the angle of reflection.
Explanation:
The law of reflection states that θi = θ r, or in other words, the angle of incidence equals the angle of reflection. In fact, reflection of light may occur whenever light travels from a medium of a given refractive index into a medium with a different refractive index.
What determines the angle of reflection is the angle of incidence
When light is reflected on a plane surface the angle of reflection is equal to the angle of incidence i.e. θr = θi .
Angle of reflection ; This is the angle between the reflected ray and the normal ray on a reflecting surface while.
Angle of incidence ; This is the angle between the direction of an oncoming ray ( incident ray ) and the line perpendicular to the reflecting surface.
Hence what determines the angle of reflection is the angle of Incidence
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explain the process of how sedimentary rocks form.
Answer:
Sedimentary rocks are formed from the weathering of other rocks, dead organic remains or chemical precipitation.Sedimentary rocks form when mud and sand are deposited in layers on the Earth's surface. The layers are deposited in many environments including oceans, rivers and deserts. These layers of sand and mud are later buried. The weight of overlying layers compresses the mud and sand to form solid rock. Steps:
Sedimentary rocks are the product of :
1) weathering of preexisting rocks, 2) transport of the weathering products, 3) deposition of the material, followed by 4) compaction, and 5) cementation of the sediment to form a rock.
( need asap :) )What is the key to the linking of nucleotides that form the sugar-phosphate backbone of DNA?
A. a weak hydrogen bond
B.a covalent bond
C.a polar bond
D.a phosphoester bond
Answer: D
Explanation:
I believe that’s the best choice but then again it’s a diester bond not a single eater bond but I guess that’s close enough.
Viruses come in many different shapes
True
OR
False
Answer:
true
Explanation:
viruses come in many different shapes and sizes, each one is different
Answer:
True
Explanation:
Shapes of viruses are predominantly of two kinds: rods, or filaments, so called because of the linear array of the nucleic acid and the protein subunits; and spheres, which are actually 20-sided (icosahedral) polygons. Most plant viruses are small and are either filaments or polygons, as are many bacterial viruses.
Which layer most likely has a pressure, represented in units of GPa, within the range of 310 GPa to 150 GPa?
outer core
inner core
lithosphere
oceanic crust
Answer:
outer core
Explanation:
The outer core is the layer of the earth that most likely had the pressure which is represented by the units of GPa within the range of 310 GPa and 150 GPa.
This layer is made up of mostly liquid iron and nickel.
Answer:
B, The outer core
Calculate the mutation rate for achondroplasia, and express the rate as the number of mutant genes per given number of gametes.
Answer:
Explanation below
Explanation:
Mutation can be described or explained as a situation whereby there is a change in the make up of a gene thereby resulting to the formation of an entire gene which will be responsible for a new character.
The rate of mutation could be fast or slow, and that is referred to as the mutation rate.
Cellular respiration in the presence of oxygen is called
(a) anaerobic respiration.
(b) glycolysis.
(c) aerobic respiration.
(d) oxygen respiration.
Answer:
C
Explanation:
Aerobic respiration.
Explain the difference between macrostates (external arrangements of particles) and microstates (internal arrangements of particles).
Macrostates and microstates may be defined on the basis of their properties and characteristics. Both are part of any system.
What do you mean by Macrostates?Macrostate may be defined as defined by the macroscopic properties of the system, such as temperature, pressure, volume, etc.
Microstate may be defined as the arrangement of each molecule in the system at a particular instant. It governs the internal arrangement of particles in a system. While macrostate is the possible outcome that governs the external arrangement of particles in the system in a definite way.
Therefore, Macrostates and microstates may be defined on the basis of their properties and characteristics.
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which cells of the human body do you think undergo mitosis more frequently than other cells and why?
Answer:
I believe skin cells
Explanation:
mitosis is when cells divide so skin cells divide really fast to maintain the skin barrier.
Decreasing ocean temperature causes the density of the water to ______.
stay the same
fluctuate
decrease
increase
4 macromolecues important to life
N-серо
The diagram shows the structural formulas of six molecules.
H
Н-С - ОН
н
с
H
н–с-он
H
н
H
Н-С-он
"
ОН
н-с-он
н Н
І
T
1 1
H
0
H
H ОН
А
B
С
D
он Н
Hн-с-н
он
ОН
6 - c
H
Hн н
н
Н-С – С – С – С – С-
1
1
н н Н Н H
E
ОН
O=C=0
F
Which molecule is the primary energy source of animals?
1.
A
If there were no semi-permeable membrane, would water move from areas of low solute to
high as in osmosis or would the solute diffuse? Explain your thinking.
Please helps!!
How do living
things grow?
Answer:
Most living things need oxygen, water and food to grow. ... Other living things eat plants or other animals for food. The cells of living things divide, allowing the living things to grow bigger and to change as they grow. The cells divide to form new cells that are different from the original cells.
Explanation:
pls make me brainliest
Answer:
water food sunlight oxeygen
Explanation:
What are some reasons that the international system uses metric units and not the English system used in the United States
Answer:
Some reasons that the SI system uses metric units are the metric system's use of base 10, the lack of fractions, and the wide-spread use of the metric system around the world.
Carnivorous plants and legumes (e.g., peas, soybeans) both absorb key nutrients directly from other organisms. How is nutrient acquisition in pitcher plants similar to that in legumes
Answer:
They acquire nitrogen from the insects they eat.
Explanation:
Pitcher plants is a canivorous plants.
Since both legumes and pitcher plants absorb nitrogen from other organisms, pitcher plants have specialised pitfall trap called pitcher found at their leaves which help help to trap, and digest insects that are prey. The obtained about 80% nitrogen from the insects they eat which is captured by their leaves.. They release digestive enzymes which acts on their insects and then decompose by bacteria to release nitrogen . This nitrogen is turn to liquid which is absorb as liquid and use for growth.
meiosis creates a ___ number of chromosomes.
23 chromos kid
%%%%%%%%%
Answer:
meiosis
46 chromosome pairs
The image shows oxygen and carbon dioxide exchanged between a leaf of a plant, and the environment. Which statement is supported by the image?
A) Water enters leaf tissue from the atmosphere.
B) Stoma in the epidermal tissue absorbs oxygen.
C) Carbon dioxide enters leaf tissue from the atmosphere.
D) Guard cells prevent carbon dioxide from entering leaf tissue.
Answer: C i think
Explanation:
When should we clessify something as not living?
Answer:
A non-living thing is anything that was never alive. In order for something to be classified as living, it must grow and develop, use energy, reproduce, be made of cells, respond to its environment, and adapt. While many things meet one or more of these criteria, a living thing must meet all of the criteria.
Explanation:
Answer:
A non-living thing is anything that was never alive. In order for something to be classified as living, it must grow and develop, use energy, reproduce, be made of cells, respond to its environment, and adapt. While many things meet one or more of these criteria, a living thing must meet all of the criteria.
Explanation:
Which layer most likely has a pressure, represented in units of GPa, within the range of 310 GPa to 150 GPa?
outer core
inner core
lithosphere
oceanic crust
Answer: A
Explanation: E2022
not sure what to do so uhhhhhhhhhhhhhhhhhhhhhh
Answer:
Explanation:
The fossil was formed when the animal died. Then sand got blown on to the top of it. Then it got more sand blown on top. Then it rained and that turned into mud. And over time the mud got harder and dried and turned back into sand and some of that sand blew off of the fossil then the fossil rose up more out of the ground.
Hope that this helped!!