Answer:
Because velocity has magnitude and direction, speed is not a vector quantity since it only has magnitude
For example, if a car is moving backwards with a speed of 40m/s
Your velocity is - 40m/s
Speed is 40m/s
4 Which muscles are actively involved in normal breathing?
Answer:
The main muscles are the diaphragm and intercostal muscles, but the muscles in the neck and the abdominal muscles also help.
Explanation:
The diaphragm is the muscle under the lungs that helps move the lungs while the intercostal muscles are the muscles in between the ribs.
pls ans question c and d
Answer:
ehejeuwghehehehbebeu
BRAINLY IF CORRECT!!!! When a fan is moving is convection, conduction, or raditation, and WHY?
Answer:
Moving of fan is convection.
The faster moving air from the fan displaces the warmer air that is in direct contact with our skin. This enhances the rate of convective heat transfer, which means we feel cooler.
Which region of the brain controls your heart rate?
A. Medulla
B. Pons
C. Pituitary
D.Hypothalamus
One of the big ideas in science is that an experiment can be
Answer:
it allows individuals and organisations to achieve expertise
Explanation:
Choose one plant structure that has a similar function to a structure in the human body. Give the name of both of the structures and explain how they have similar functions.
Answer:
the stem of a plant and the human spine
Explanation:
They both help stay upright, have a structure, and plants have nodes for leaves and roots and flowers just like we have arms and legs connected to our body.
(i tried my best to explain, i hope it helps<3!)
Name the region of the atom where protons and
neutrons are located. This region is indicated by
label B.
Name the region of the atom where electrons are
located. This region is indicated by label A.
DONE
Answer:
Protons and neutrons are located in the nucleus
Electrons are located in the electron orbital
Answer:
Nucleus and Orbitals
Explanation:
3. If a complex molecule can be digested to produce sugars, then the original molecules should
be classified as which type of biomolecule?
A lipids
B proteins
C nucleic acids
D carbohydrates
The original molecules should be classified as carbohydrates, the correct option is D.
What are carbohydrates?A carbohydrate is a biomolecule comprised of carbon, hydrogen, along with oxygen atoms in a ratio 2:1 hydrogen-oxygen atom ratio.
Carbohydrates are the key source of energy in the body, fueling person's brain, kidneys, heart muscles, additionally central nervous system.
Fiber, for instance, is a carbohydrate that aids digestion, makes one feel full, as well as helps keep blood cholesterol levels in control.
Sugars are the smallest having relatively low molecular weight carbohydrates, which are monosaccharides and disaccharides.
Carbohydrates are a macronutrient and the body's primary source of energy along with proteins and fats.
They consist of starches, sugars, and fiber. Fibers and starch are complex carbs, whereas sugars are simple carbs.
Thus, the correct option is D.
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why species is called as smallest taxonomic level?
Answer:
It is the smallest and basic unit of classification. Taxonomic studies consider a group of individual organisms with fundamental similarities as a species. Thus all the individual members belonging to particular species show all similar characters and can breed among themselves to produce a similar type of organism.
Thank You
Identify three advantages and three disadvantages of bioplastics.
Answer:
The three advantages of bioplastics
Reduction of greenhouse gas emission.Saving fossil fuels.Possibility of using a local resource.The three disadvantages of bioplastics
Bioplastics won't biodegrade in a landfill. Bioplastics encourage people to litter more. Bioplastics contaminate plastic recycling streams.In the model that you built of the respiratory system, what structures did the straws represent?(1 point)
A. the trachea and bronchi
B. the chest cavity and ribs
C. the lungs
D. the diaphragm
Answer:
the trachea and bronchi
Explanation:
Which bio molecule is not found in cell membrane
Answer:
Nucleic acid
Explanation:
Hope this helps
True or false…
Every element emits a unique set of light wavelengths, and scientists can use these light fingerprints to determine what kind of atoms are in stars and nebulas.
Answer:
true
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ygggghgffggttttt
Questi
Holds instruétions for making proteins
Answer:
El ARN mensajero (ARNm) lleva las instrucciones para producir proteínas. Como el ADN, las proteínas son polímeros: largas cadenas ensambladas a partir de unidades moleculares prefabricadas que, en el caso de las proteínas, son aminoácidos. Una gran máquina molecular * llamada ribosoma traduce el código del ARNm y ensambla las proteínas.
Explanation:
Which of the following is NOT a part of an organism’s niche?
A. Behavior
B. Habitat
C. Equilibrium
D. Physiology
Answer:
D
Explanation:
D
Organism's niche does not include equilibrium. The correct option is C.
What is a niche?A species' niche is the primary role in the ecosystem. A niche, in other words, is how an organism "makes a living." The organism's role in the flow of energy through the ecosystem will be included in the niche.
Physiological traits are closely related to an organism's phylogeny and determine its environmental niche.
Thus, an organism's niche does not include equilibrium. The correct option is C.
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what is the definition of Concentration Gradient?
Explain the process in which root cells get their energy, list all the organelles involved in the process. NO COPY AND PASTE!
Answer:
They get their energy from the cell membrane/ nucleus.
Explanation:
Through the process of photosynthesis.
Hi!! can u help me? It's a very confusing question
Answer:
Well since they have the same environment and the only thing that is different is the amount of sunlight and final height of the plant, we can say that the more sunlight a plant gets, the more it grows.
1. The word impertinent MOST
LIKELY means
A. curious.
B. understanding.
C. disrespectful.
D. amusing.
Answer:
The word impertinent most likely means disrespectful.
Why does cells divide instead of just grow larger?
Hello there :). Here is why cells divide instead of growing larger:
The larger a cell becomes, the more demands the cell places on its DNA. In addition, the cell has more trouble moving enough nutrients and wastes across the cell membrane. In time, the cell's DNA would no longer be able to serve the increasing needs of the growing cell.
evolutionary ideas of Lamarck and Darwin (research work)
Answer:
Lamarck's transmutation theory established the foundation of an evolutionary model introducing a new way to research in nature. Darwin's selection theory was proposed in 1859 to explain the origin of species within this epistemological process.
Explanation:
what is meaning of H2O and compound
Answer:
A chemical compound is a chemical substance consisting of two or more different chemically bonded chemical elements, with a fixed ratio determining the composition. For example, water (H2O) is a compound consisting of two hydrogen atoms bonded to an oxygen atom.
Explanation:
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How are traits determined by DNA?
delivers blood to the heart
Answer:
veins
Explanation:
Arteries carry blood away from the heart and veins carry blood back to the heart.
how do fish obtain oxygen?
a.
from water flowing over their gills.
b.
from water flowing over their fins.
c.
from water flowing over their lungs.
d.
none of the above.
Fish take water into their mouth, passing the gills just behind its head on each side.
There is a large amount of variety in the eye color of human beings. Eye color variation depends on the dominant or recessive alleles. Such a broad spectrum of colors can be attributed to... A. malnutrition. B. multiple alleles. C. a lack of alleles.
Answer:
Eye color is determined by variations in a person's genes. Most of the genes associated with eye color are involved in the production, transport, or storage of a pigment called melanin. Eye color is directly related to the amount and quality of melanin in the front layers of the iris.
The broad spectrum of colors can be attributed to multiple alleles. The correct option is B.
What is variation in human traits?Variation is a word used for different traits present within the species, variation occurs due to recessive and dominant genes present in the organisms and due to mutation.
Mendel gave this theory that the alleles are given independently by the parents and one become recessive and one becomes dominant.
The difference in eye color is due to these alleles. Suppose the mother has black eyes and the father has blue eyes, the child can have both alleles, but only one will show. Mutation can also cause variation, maybe the child has totally different eyes than his parents.
Thus, the correct option is B. multiple alleles.
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PLEASE HELP!!!
How do the Aleutian volcanoes differ from the Cascades volcanoes?
Answer:
Type of Convergence - Ocean to continent for Cascade/ Ocean to Ocean for Aleutian
Explanation:
6. Cytokinesis is when the cell now divides into two new cells, each with a full set of
chromosomes.
ATrue
b. False
Answer: true
Explanation:
Todas las organelas tienen adn?
Answer:
Tres orgánulos contienen ADN: el núcleo, las mitocondrias y los cloroplastos.
Explanation:
espero que te ayude
What do amino acids, fatty acids, and sugars have in common
A. They are used to make proteins.
B. They are used to lipids.
C. They are made of carbon, oxygen, and nitrogen.
D. They are made of carbon, oxygen, and hydrogen.
Answer:
The answer to this question is C. They are made of carbon, oxygen, and nitrogen.
Explanation:
Have a great day and good luck!
The amino acids, fatty acids, and sugars have in common are they are made of carbon, oxygen, and hydrogen. The correct option is D.
What are amino acids and sugars?Amino acids are organic compounds that are made up of amine and carboxylic groups. They are the building blocks of protein. The basic particle of amino acids is C, H, and O.
Sugars are sweet carbohydrates. They are made up of carbon, hydrogen, and oxygen. The fundamental formula of sugar is C6H12O6. They are the primary source of energy.
Fatty acids provide the structural strength to the body. They are made of carboxylic acid and aliphatic chains. They can be saturated or unsaturated. So these molecules have the same elements, from which they are made.
Thus, the correct option is D. They are made of carbon, oxygen, and hydrogen.
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