Answer:
168 J
Explanation:
Work can be calculated using the following formula.
w=f*d
where w is work, f is force, and d is distance.
Anna applied a force of 84 Newtons, and lifted the baby 2.0 meters.
f=84 N
d=2 m
Substitute these variables into the formula.
w=84 N* 2 m
Multiply
w=168 N-m
A N-m is the same as a Joule, or J.
w= 168 Joules
Anna does 168 Joules of work.
Identify three of the seven common neurotransmitters and the functions of each. Then describe what each neurotransmitters controls or regulates in the body.
Answer:
Dopamine, Acetylcholine, Serotonin
Explanation:
Answer:
One common neurotransmitter is dopamine. It is an excitatory neurotransmitter that is involved in movement, learning, attention, and emotion. GABA is another common neurotransmitter, and it is a major inhibitory neurotransmitter. It is involved in anxiety, arousal, and sleep. Glutamate is a major excitatory neurotransmitter, and it is involved in learning and memory.
Acetylcholine: Serves as a messenger between each motor neuron and skeletal muscles, which accounts for its role in helping to control skeletal muscles.
Serotonin: Affects sleep, hunger, mood, and arousal; connected to aggression and abnormal behavior
Norepinephrine: Helps control arousal and alertness; helps in regulating mood
Endorphins: Major excitatory neurotransmitter; linked to memory and learning processes; released in response to pain and intense exercise
Explanation:
:) have a good day
What is an important by-product of the photosynthesis reaction?
Earthquakes happen around the world and can cause landslides, cracks in the ground, or damage to buildings and roads. Which of the following causes earthquakes? giant ocean waves called tsunamis underground movement of Earth’s plates energy released from a volcano problems in the air that make earth unbalanced
Answer:
of Earth’s plates energy released from a volcano problems in the air that make earth unbala
Answer:underground movement of earth's plates
Explanation:
I pts
While testing the effectiveness of a new antibiotic, researchers use three groups with
the following treatments:
• Group 1--receives a placebo
• Group 2: receives antibiotic A
• Group 3: receives antibiotic B
Which of the groups would not be considered a control group?
o the group that received antibiotic A
o the group that received the placebo
o the group that received antibiotic B
O both groups receiving antibiotic A and B
Researchers use three groups when testing the efficacy of a new antibiotic, so both groups receiving antibiotic A and B, are not a control group, but the ones that received the placebo is a control, so the answer is in the last option.
What is the significance of the control group?The control group has various significant characteristics that allow researchers to compare the effectiveness of the experimental data with the standard and check the effectiveness, but the control group does not receive the experimental treatment. Here, the placebo-treated population is the control group, while the other two groups are experimental and can be taken as the control group.
Hence, researchers use three groups when testing the efficacy of a new antibiotic, so both groups receiving antibiotic A and B, are not a control group, but the ones that received the placebo is a control, so the answer is in the last option.
Learn more about the control group here.
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Match the following terms and definitions
1. gene
2. allele
3. trait
4. chromosome
a thread-like molecule in the nucleus composed of DNA
a genetic characteristic of the individual
a portion of DNA which codes a specific heredity trait
alternate forms for a specific gene
Some students used information they gathered from lab investigations to prepare a table. They entered the table in their lab notebooks. Which of these correctly identifies the two cells described in the table? Your answer: Cell 1 is eukaryotic, and Cell 2 is prokaryotic. Both Cell 1 and Cell 2 are prokaryotic. Cell 1 is prokaryotic, and Cell 2 is eukaryotic.
Answer:
Cell 1 is prokaryotic, and Cell 2 is eukaryotic.
Explanation:
All living cells have been classified into two major domains; Eukarya and Prokarya. This classification was done based on the possession or not of an enclosed structure that houses the genetic material of the organisms called NUCLEUS. Eukaryotic cells possess a membrane-bound nucleus that houses their DNA while prokaryotic cells do not have a membrane-bound nucleus, hence their DNA is found naked in a region of the cytoplasm called NUCLEOID.
In addition to this primary basis (nucleus possession), eukaryotic cells have a linear DNA and other membrane-bound organnelles like mitochondria, Chloroplast, Endoplasmic Reticulum etc while prokaryotic cells have a circular single DNA and have no membrane-bound organnelles.
Based on this comparison, cell 1 is a prokaryotic cell while cell 2 is an eukaryotic cell.
Explain what the term "Zero Waste" is all about. *
Answer:
zero waste means u are completely self sufficient up to th point where u have no carbon footprint
Explanation:
that is why its called zero waste
What factor contributes to cultural and environmental degradation ?
Answer:
Diffusion I think
Explanation:
not sure, hope it helps
Which of the following are ways that humans benefit from biodiversity?
Choose all that apply:
Reduced risk of flooding
Food harvested from ecosystems
Raw natural materials, such as wood or rubber
Pollination of crops
Recreation
Medicines derived from plants
Answer: to be honest I would click all
Explanation: Humans benefit from biodiversity as a source of food, medicine, and raw materials. Biodiversity ecosystems provide benefits to humans, like cleaning water or pollination of crops. ... Marine ecosystems store large amounts of carbon.
Human gets benefits from biodiversity such as food material, pollination of crops, medicines, etc. Hence, all options are correct.
What is biodiversity?Biodiversity refers to the varieties of flora, fauna, fungi, bacteria, and all types of microorganisms in our ecosystem. There are billions of species of organisms present on the earth. The highest biodiversity is found in the ocean.
There are many benefits of biodiversity such as the risk of flood reduction because plants stop erosion, food produced by the producers, pollination of crops by pollinating agents, recreation, and raw natural materials like wood, vegetables, spices, and medicines derived from plants.
Human gets all these benefits from biodiversity. Therefore, all options are correct.
Learn more about biodiversity, here:
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Describe Lamarck’s idea about how organisms evolved. Use the giraffe’s neck as an example.
Answer
Lamarckism, a theory of evolution based on the principle that physical changes in organisms during their lifetime—such as greater development of an organ or a part through increased use—could be transmitted to their offspring.
Lamarck believed that the stretching elongated the giraffe's neck, which became a useful characteristic and was passed onto future generations. This resulted in the length of the giraffe's neck increasing over time. It is now commonly accepted that Lamarck's ideas were wrong.
the DNA is tightly wrapped around histone proteins in a chromosome why is this packaging necessary?
1. Because the dna molecules will down without it .
2. Because the dna molecules will dissolve in cell water .
3.) because the long dna will fit inside the cell.
4.) because the dna needs to attach itself to support .
Answer:
3.) because the long dna will not fit inside the cell.
Explanation:
This question is oddly written. At first glance, I can tell it's not 1 or 2 because DNA doesn't "dissolve" in cell "water", nor will it "down" (I'm assuming this means "drown"?).
The main reasons for DNA packaging are so that the DNA can fit into the cell, and so it's protected from damage. The DNA is vital to the cell, so it protects it by coiling it up. Coiling and packaging are also important when it comes to gene expression.
Answer: The correct answer is C
Explanation:
I took the test
7.Cells of a particular organism are dying at an incredible rate. Under a microscope, doctors are able to determine that the cells
are swelling up with waste and bursting. What must be true of the cells?
O A. They are not synthesizing needed proteins.
B. The cell membrane has become completely permeable.
O C. They are no longer able to produce ATP molecules.
D. They are unable to perform exocytosis.
Answer:
The cells specialization is what give the cell the ability to survive amongst other cells, without it the cell would not be able to survive. This is a cells means of survival.
Explanation:
none
Select the correct answer from each drop-down menu.
The image shows the path of a ball that’s thrown.
At positions (A,B,C, or D) and (D,E,F, or G), kinetic energy is maximum. At position (B,C,D,or E), potential energy is maximum.
At position (A) and (G), kinetic energy is maximum. At Position (D), potential energy is maximum.
At point A and G kinetic energy will be maximum while Potential energy is maximum at point D.
Kinetic energy (KE) is initially provided to the ball while it is still in contact with the throwing hand. Once the ball leaves the hand there is no input of energy. As the ball rises the KE is transformed to gravitational potential energy (GPE). This GPE is effectively stored in the height of the ball.Now, when the ball falls back to the ground its potential energy is transformed into kinetic energy, which will continue increasing as it gains momentum, until it finally collides with a surface.Learn more:
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Timber sold to finance war or as a tactic to oppress or exterminate those who live in the rainforest
is
O conflict timber
O Trade timer
O Migrant Timber
U
Question 3
0.43 pts
Mountains and ice are?
Answer:
Colliding?
what are the answer choices firstly.
Explanation:
somebody somebody help me please. I'll give brainliest to anyone who gets it right
Ans. The Adrenal Gland Recieves a message to stop releasing CRH
What is the difference between a scientific theory and a scientific law?
A. A law is a description of natural events. A theory attempts to
explain the causes of natural events.
B. A law is an educated guess. A theory is a fact.
C. A theory is an educated guess. A law is a fact.
D. A theory is a description of natural events. A law attempts to explain the causes of natural events.
In Hard Times, by Charles Dickens, Sissy's father abandons her, yet she continues to hope for his return. What is
Dickens revealing through this characterization of Sissy?
o that everyone should have hope
that hope is futile
O that hope is ridiculous
O that hope is essential for humans
Answer:
B is Incorrect
Explanation:
PLEASE ANSWER ASAP!
How does the tidal force affect the water and beaches on Earth?
Answer:
it makes the water level go up and down
Select the correct answer.
A lichen is an organism that structurally appears to be a single organism. But a lichen is actually two different organisms—a fungus and green
algae-living together as one organism. The fungal partner derives its nutrition from the photosynthesizing algae. How does a lichen differ in its
photosynthetic activity from Elysia chlorotica, the sea slug that's considered to be a photosynthesizing animal?
CA In lichens, the fungi photosynthesize on their own, while Elysia chlorotica forms a relationship with a photosynthesizing plant.
B. In lichens, the relationship with the algae lasts throughout the life cycle, but in Elysia chlorotica, the relationship occurs only
during the immature juvenile stage of the slugs life cycle.
OC Lichens can photosynthesize only because of the living algal partner, while Elysia chlorotica incorporates chloroplasts from
algae into its cells.
D. In lichens, the association between the fungi and algae is permanent, while Elysia chlorotica associates with a
photosynthesizing organism only when it requires food.
Answer:
The correct answer is option C. Lichens can photosynthesize only because of the living algal partner, while Elysia chlorotica incorporates chloroplasts from algae into its cells.
Explanation:
Elysia chlorotica is an animal of the mollusk member that is known as the animal that can make its own food in unfavorable conditions. Elysia chlorotica search out plants and they eat them. They assuredly don't photosynthesize n its own.
They take the mechanism that permits plants to collect sunlight based vitality. The slugs take up these smaller than normal machines, called chloroplasts, into their skin, which turns them emerald green. While Lichens can photosynthesize only due to the living partner algae that can photosynthesize for both.
Answer: B.
Explanation:
The correct answer is option C. Lichens can photosynthesize only because of the living algal partner, while Elysia chlorotica incorporates chloroplasts from algae into its cells.
Explanation:
Elysia chlorotica is an animal of the mollusk member that is known as the animal that can make its own food in unfavorable conditions. Elysia chlorotica search out plants and they eat them. They assuredly don't photosynthesize n its own.
They take the mechanism that permits plants to collect sunlight based vitality. The slugs take up these smaller than normal machines, called chloroplasts, into their skin, which turns them emerald green. While Lichens can photosynthesize only due to the living partner algae that can photosynthesize for both.
Which theory did Pasteur disprove by using boiled beef broth and a flask with
S-shaped tubing?
A. Cells came from preexisting cells.
B. Cells make up all living things.
C. Cells are the basic unit of life.
D. Cells came from nonliving things.
Answer:
D
Explanation:
Pasteur blocked the flask from open air to prove that cells couldn't spontaneously come into life, but rather they must come from preexisting cells.
Answer:
Cells came from nonliving things
Explanation:
QUESTION 1
At what type of plate boundary do lithospheric plates slide against each other horizontally?
divergent
transform
convergent
3 points
QUESTION 2
Where do most transform faults occur?
interior of continents
at oceanic ridges
in the ocean near continental boundaries
3 points
QUESTION 3
The San Andreas Fault in California is an example of a transform fault that has developed where the Pacific Plate moves past the North American Plate.
True
False
2 points
QUESTION 4
The lithosphere is relatively cold along a transform fault, making brittle fracture of rock materials common.
True
False
2 points
QUESTION 5
Earthquakes that take place along transform faults release huge amounts of energy.
True
False
2 points
QUESTION 6
Most volcanism along transform faults originates from
melting of mantle as it rises to fill pull-apart basins
subduction of oceanic plates under continental plates
both a and b
3 points
QUESTION 7
A "leaky" transform system is one that has
active sedimentation
metamorphic activity
volcanic activity
3 points
QUESTION 8
Transform faults can offset spreading centers in oceanic crust by several kilometers in length.
True
False
2 points
QUESTION 9
At the ocean floor transform plate boundaries, which of the following can cause mineral recrystallization of basalt?
brittle fracture of rocks
upwelling magma
high heat and ductile deformation
3 points
QUESTION 10
Which of the following famous transform fault systems produces large earthquakes in Canada?
North Anatolian
Alpine
Queen Charlotte
Answer:
1.transform
2.at oceanic ridges
3.true
why might the use of common names to describe organisms cause confusion? (for taxonomy and classification unit)
the donor blood type considered to be universal
Answer:
O negative blood
Explanation:
For emergency transfusions, blood group type O negative blood is the variety of blood that has the lowest risk of causing serious reactions for most people who receive it. Because of this, it's sometimes called the universal blood donor type.
HOPE IT HELPS :)
PLEASE MARK IT THE BRAINLIEST!
Answer:
type O
Explanation:
type O, since it contains no antigens. Type O, negative, to be more speciifc (with negative referring to the Rh factor) however O Negative Is widely considered the universal blood type. It is very important because it potentially be transfused to any patient regardless of their blood type. Especially in emergency situations, when there isn't enough time to determine a patients blood type. A person with type O - is considered to be a universal donor because his blood can be safely received by a person with type A, B, AB, or O.
hope this helped!
Describe the distribution of earths surface water
Answer:
b
Explanation:
A group of researchers at Stanford University developed software that can be used to distribute the processing of data to anyone who is willing to donate time on their idle personal computers. As a result, the researchers have been able to achieve protein-folding simulations that are far better than those other computing methods have done. Which statement best describes the work of these researchers?
Answer:
The first one sentence all of it because it describes the work they do
Explanation:
What does it mean to make a prediction?
Answer:
A prediction is when you believe that something is going to happen. Example: I predict that someone will answer this before me.
Predictions can either be right or wrong.
__________ are the methods of reproduction.
Sexual & Gamete
Sexual & Asexual
Asexual & Monosexual
Asexual & Respiratory
Answer:
The answer is sexual and asexual.
Why do biologists measure the number of trophic levels in an ecosystem?
A. To find new treatments for diseases
B. To make it helpful for humans
C. To see if it has any food chains
D. To check its stability and health
Answer:
I think it's D
They measure the number of trophic levels to check its stability and health
describe the conversion of energy when a robin eats blackberries NEED ANSWER ASAP (15 POINTS)
Answer:the energy from the sun goes to the plant than the plants energy goes into the robin because the robin consumed it.
Explanation: