Construct a basic pathway for blood flow in a human body using heart, arteries and veins.
Blood is forced into the pulmonary artery by the ventricle when it contracts, passing via the pulmonic valve. Blood is transported through the pulmonary artery to the lungs, where it "gathers" oxygen. It then exits the lungs and travels through the pulmonary vein back to the heart. Blood flows into the left atrium.
HOW WOULD YOU ENSURE YOU HAVE VALID DATA? 6TH GRADE SCIENCE
How can scientific validity be ensured?
More variables under control, better measurement methods, more randomization to avoid sample bias, experiment blinding, and the addition of control or placebo groups can all help an experiment's validity.
What determines the reliability of scientific data?
How well a method measures what it is supposed to measure is known as its validity. When a study's findings are highly valid, it means that they accurately reflect the genuine features, traits, and variations in the physical or social reality. High dependability is one sign of a valid measurement.
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Hydrogen ions are transported by using the energy released from jumping electrons, hence it is called pumping. True/ False
how does sexual selection contribute to the evolution of behavior
Answer:
body
inside your body ........
Which of the following statements is NOT true of the cerebellum?
1. The cerebellum integrates visual and auditory memory.
2. The cerebellum coordinates voluntary muscle action.
3. The cerebellum is located at the base of the brain near the brain stem.
4. The cerebellum helps to regulated balance and posture.
Explanation:
Number 1 is not true because the temporal lobe controls visuals
for my science experiment (IB program. Internal Assessment) i am testing which method leads to the most seed germination. i have 2 independent variables: hydroponic system and regular soil. what would a possible control group be?
Answer:
regular soil because
from small classes we learn that germination is nice for plqnts
Which
process IS responsible for causing menstruation?
A.
breakdown of the corpus luteum
fertilization of the egg
implantation of the egg in the endometrium
D.
rupture of a follicle
in the ovary
® E.
repair of the endometrial lining
Answer:
e
Explanation:
Answer:
d. rupture of a follicle in the ovary
Explanation:
answer the question on the attachment
Answer:
Chemical Energy-Electrical Energy-Mechanical Energy
Explanation:
I took the test and got 100%
A chemical formula shows the_____of the______of atoms.
A. ratio, type
B. ratio, elements
C. all of these
D. types, reactants
The atomic number of carbon is 6. How many electrons does an atom of carbon have if it is represented by the symbol
shown below?
12C²-
O 5 electrons
O 6 electrons
O 7 electrons
O 11 electrons
Answer:
It has an atomic number of 6. That means a carbon atom has 6 protons, 6 neutrons, and 6 electrons
The table below shows three enzymes found in the human body and the pH of their locations.
Enzyme Body part pH
Ptyalin Mouth 6.5 - 7
Pepsin Stomach 1.0 - 3.0
Trypsin Small intestine 7.5 - 9.0
How will the activity of pepsin change after it moves with the food from the stomach to the small intestine?
Choose 1 answer:
Choose 1 answer:
(Choice A)
A
It will increase as the pH increases.
(Choice B)
B
It will slow down because the environment is too basic.
(Choice C)
C
It will decrease because the pH of the small intestine is similar to that of the stomach.
(Choice D)
D
It will adapt to the new environment and continue to work at the same rate.
B. It will slow down because the environment is too basic.
As the food move from the stomach to the small intestine the activity of pepsin will slow down because the environment is too basic.
Pepsin- Pepsin is a stomach digestive enzyme used to break down proteins in food that has been consumed. Pepsin is produced by the main cells of the stomach as pepsinogen, an inactive zymogen. The stomach's lining's parietal cells release hydrochloric acid, which reduces the pH of a stomach.
Parietal cell- The biggest cells in such glands are called parietal cells, and they are found inside the fundus & body of the stomach. They develop from immature progenitor cells inside the gland isthmus, travel upward into the pit area, and finally migrate downward toward the gland base.
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How can you find the density of a blow up balloon?
A 25kg child resting at the top of a 2 meter slide has how much potential energy?
980 Joules of potential energy
Which energy has potential?The energy that a thing retains due to its position in relation to other objects, internal tensions, electric charge, or other elements is known as potential energy in physics.
Common types of potential energy include the gravitational potential energy of an item, the elastic potential energy of a stretched spring, and the electric potential energy of an electric charge in an electric field.
Potential energy was first used by Scottish engineer and scientist William Rankine in the 19th century, however it has roots to the idea of potentiality put out by the Greek philosopher Aristotle.
The child has 50 kg * 2 m * 9.8 m/s^2 = 980 Joules of potential energy.
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If a tractor has a mass of 234 what is the acceleration?
The acceleration of the tractor is a = F/234.
How to find acceleration?Newton's second law of motion states that an object's acceleration is equal to its mass divided by the net force acting on it, or a = F m.
When an object's mass and the net force acting on it are known, its acceleration can be calculated using this equation for acceleration.
The SI units for acceleration are m/s2, meters per second squared, or meters per second per second, which expresses the change in velocity in meters per second over a period of time.
There is a different relationship between mass and acceleration. The relationship is inverse.
In an inverse connection, one variable rises as the other one falls.
An item will accelerate with a given force less slowly the more mass it has.
a = F/m
a = F/234
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QUESTION 7
The process by which a species or ecosystem changes the environment in a way that leads to another species being able to
move in and become dominant.
O Mediation
O Niche building
O Facilitation
O Microclimate adjustment
Niche building is the process by which a species or ecosystem changes the environment in a way that leads to another species being able to move in and become dominant.
Niche- A niche is a position or location that is highly suitable for somebody or something, often because it is very particular and unique from others. A position and interest that enables something or someone to thrive in a specific context is frequently referred to as a niche.
Ecosystem- An ecosystem is a region where a bubble of life is created by plants, animals, as well as other organisms interacting with the weather, environment, and other factors. Abiotic variables, or nonliving components, coexist with biotic components in ecosystems. Plants, animals, as well as other species are biotic factors.
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A freshly cut potato turns brown when left standing. But why do mashed potatoes stay
white?
Answer:
Mashed potatoes are cooked. The heat from cooking them denatures the enzyme Catecholase which causes raw potatoes to turn brown through oxidation when they are exposed to air.
What would happen if there was no mutation?
Answer:
Only when DNA changes are carried in egg and sperm cells are they passed to the next generation. Believe it or not, a certain amount of sloppiness is built into the system. Without mutation there would be no variation, and without variation there would be no evolution.
Explanation:
What do particulates do in the Earth's atmosphere?
Question 3 options:
They nucleate water vapor to form clouds
They trap heat
They shield the Earth's surface from harmful solar radiation
They help plants to grow better
The ozone layer shields us from the harmful effects of impudent and UV radiation, which can show sunburn, skin cancer, and eye damage.
What shields the Earth from the harmful effects of solar winds?
Earth's magnetic field, or magnetosphere, extends from the planet's core out into space, where it meets the solar wind, a brook of charged particles emitted by the sun. The ozone layer buckles us from the harmful effects of immoderate UV radiation, which can lead to sunburn, skin cancer, and eye damage. Earth's magnetic field serves to divert most of the solar wind, whose charged particles would else strip away the ozone layer that protects the Earth from harmful ultraviolet radiation. Earth's magnetic field, also known as the geomagnetic field, is the magnetic field that extends from Earth's interior out into space, where it interacts with the solar wind, ozone layer stream of charged particles emanating from the Sun.
so we can conclude that The ozone layer shields us from the harmful effects of excessive UV radiation, which can lead to sunburn, skin cancer, and eye damage.
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Create a procedure(at least 5 steps) using bio-indicators that you could do to determine the health of a body of water or an ecosystem.
Fungi, actinomycetes, lichens, earthworms and plants are the bioindicators of body of water or an ecosystem.
What can Bioindicators tell us about an ecosystem?Use of ecosystem or water bioindicators yields the following image.
Bioindicators are used to evaluate the state of the environment and how it changes over time. They include biological processes, species, or communities.
Lichens are one type of bioindicator. These plants are extremely vulnerable to airborne since they grow on surfaces like dirt, rocks, and trees. This is so that they may get the majority of their nutrition from the air.
The quantity and variety of lichens on the trees in our forests are indicators of how clean the air is. Because different lichen species are more or less susceptible to air pollution, knowing which species are present can also give us an idea of the pollution level.
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Spiders, scorpions, and ticks belong to the class:
a. Isoptera.
c. Chordata.
b. Crustacea.
d. Arachnida.
Please select the best answer from the choices provided
A
B
C
D
Answer:
D. Arachnida
Explanation:
Each of these specimens have 8 joint-legs.
Review research and related literature on immigrant populations in the rural/ global environment
The impact of immigrant population in the rural and global environment is degradation in human ecology.
What is immigrant population and how the rural area and global environment are effected by it?The population that are migrated from the native place to the place where the population is either sent or migrated for some reason.There are lot of problems showed by the immigrant population as in the context of human ecology.Human ecology is getting disturbed by this migration as the population is getting more in rural regions of our country in compare to urban areas.Poor is getting poor and rich getting richer, to maintain the sustainable balance in the environment , it should be taken into concern.To know more about population visit:
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Fatty acids that are broken down for energy production are utilized for which aspects of cellular respiration? Choose all that apply.
Check All That Apply
Fermentation
Glycolysis
Pyruvate oxidation
Citric acid cycle
Electron transport chain
REAL ANSWERS ONLY! NO LINKS!
Answer:
glycolysis
Explanation:
glycolysis is the first way involved in cellular respiration.
The correct option is B. Fatty acids that are broken down for energy production are utilized for which aspect of cellular respiration is glycolysis.
What is glycolysis?
Through a sequence of processes known as glycolysis, glucose is divided into two pyruvate molecules, each of which has three carbons. Since the majority of species alive today still use glycolysis, it is an old metabolic route that developed long ago.
Glycolysis is the initial step in the process of cellular respiration in organisms. However, many anaerobic organisms—organisms that do not use oxygen—also contain this route since glycolysis does not require oxygen.
Therefore, The correct option is B. Fatty acids that are broken down for energy production are utilized for which aspect of cellular respiration is glycolysis.
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A company is creating a new mosquito repellent, and needs to figure out how much is
needed to stop mosquito bites. They find volunteers from the nearby college. Each
person is given either 1mL, 2mL, or 3mL of the repellent to rub on their arm. Some
volunteers are given no repellent. Each person is then put in a room with mosquitoes for
10 minutes. Numbers of bites are measured for each volunteer.
What is the independent variable
What is the dependent variable
And what is the control group
is pisaster ochraceus a keystone species? provide a rationale for your response.
Yes, Pisaster ochraceus is a keystone species because helps to maintain balanced populations of seaweeds and the ecosystems that depend on them by controlling the numbers of mussels as well as barnacles.
A keystone species, is Pisaster ochraceus?This sea star contributes to the maintenance of healthy seaweed populations and the communities of sea urchins, sea snails, limpets, and bivalves that consume them by controlling the populations of mussels.
Note that Sea stars like this one, Pisaster ochraceus, were the first creatures to be recognized as keystone species.
A crucial species in the rocky marine intertidal communities off the northwest coast of North America is the starfish Pisaster ochraceus.
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If a mutation occurs in a gene that codes for a protein, what might happen to that protein after the mutation has occurred?
a.
The gene and mRNA do not change, but the protein does.
b.
The mRNA changes but the amino acid sequence does not.
c.
The protein might have different amino acids because the mRNA had different codons.
d.
Nothing - mutations only cause changes in the DNA.
The gene and mRNA do not change, but the protein does. Option A.
When the mutated sequence is translated into protein the resulting protein is incomplete and shorter than normal. As a result, most nonsense mutations result in non-functional proteins. A genetic variant can prevent one or more proteins from functioning properly. By changing the instructions of genes to make proteins.
The variant may cause the protein to malfunction or not be produced at all. The mutation is the process that causes a permanent change in the DNA sequence. Changes in a gene's DNA sequence called mutations can change the amino acid sequence of the protein the gene encodes, but this is not always the case. Coding region mutations can have very different effects on an organism's phenotype. Some mutations in this region of DNA and RNA can result in beneficial changes.
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describe the path taken by a carbon dioxide molecule after it had passed through the stomata during daytime until it becomes part of a glucose molecule
Carbon dioxide leaves the plant's leaves through stomata, which are small openings. Two guard cells surround each stomatal opening.
What is carbon dioxide?Carbon dioxide the chemical compound CO2 is made up of molecules with one carbon atom covalently double-bonded to two oxygen atoms in each one of them.. It is found in the gas state at room temperature.
The path taken by a carbon dioxide molecule after it had passed through the stomata is-
Green plants use photosynthesis to absorb carbon dioxide from the atmosphere. The stomata on the leaves of this plant allow carbon dioxide to exit. Two guard cells surround each stomatal opening.
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The following diagram shows a macromolecule produced by cells.
(Picture below)
During which process is this produced?
Question 5 options:
photosystem I
light independent reactions
light dependent reactions
photosystem II
The given diagram is produced during the light independent reactions.
The given molecule diagram is the Glucose molecule.
Light Independent Reaction- The photochemical process of photosynthesis involves a number of light-independent biochemical events that result in the formation of organic compounds from carbon dioxide. This metabolic pathway is propelled by the energy released from the ATP created during the light reactions.
Photosynthesis- All green plants use the biological process of photosynthesis to create their own nutrition. Photosynthesis requires carbon dioxide, water, and solar energy. Oxygen is a byproduct of this activity.
Light-dependent reactions & light-independent reactions are the two phases of photosynthesis. Daytime events involve light-dependent processes, often known as light reactions. The dark reaction or Calvin cycle are other names for the light-independent process.
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Help asp I’ll give brainliest
Answer:
1. Sodium, oxygen, hydrogen
2. Carbon, oxygen, calcium
Explanation:
NaOH : sodium, oxygen, hydrogen
Na: sodium
O: oxygen
H: hydrogen
CaCO3 : carbon, calcium , oxygen
Calcium: Ca
Carbon: C
Oxygen: O
Hope this helps, have a great day!!
3. Describe the overall trend of the graph.
Here the graph is showing increasing trend i.e; the population is increasing year-on-year. Follow the trend from left to right and state whether it is going up, down, or staying the same to explain the graph.
A trendline is a line drawn above or below pivot highs or lows to indicate the price's primary direction. Support and resistance in any time frame are represented visually by trendlines. They depict patterns during times of price contraction and show the direction and pace of the price.
Your best chart for displaying trends over time is a line chart. The most effective visual display for highlighting change over time is a line chart. Think about two variables, one on each axis: vertical and horizontal.
Three main graph types used to visually depict data in biology are: The scatter plot, Linear graph , a bar graph.
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Water is a nonpolar molecule?
Explanation:
The unequal sharing of electrons between the atoms and the unsymmetrical shape of the molecule means that a water molecule has two poles - a positive charge on the hydrogen pole (side) and a negative charge on the oxygen pole (side).