Answer:
D Flu is caused by a virus.
Explanation:
Antibiotics are designed for bacteria, not viruses.
The statement which explains why antibiotics can treat flu-like symptoms caused by bacteria but are ineffective against the flu is that the flu is caused by a virus. Thus, the correct option for this question is D.
What do you mean by Antibiotics?Antibiotics may be defined as a type of drug that is significantly utilized in order to treat infections that are typically caused by bacteria and other microorganisms. It is a type of antimicrobial substance that becomes active against bacteria.
Antibiotics are the most important type of antibacterial agent for fighting bacterial infections. It can effectively treat flu-like symptoms caused by bacteria but are ineffective against the flu because the disease of the flu is generally caused or provoked by the presence of the Influenza virus.
Therefore, the statement which explains why antibiotics can treat flu-like symptoms caused by bacteria but are ineffective against the flu is that the flu is caused by a virus. Thus, the correct option for this question is D.
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How do plants in the ocean deal with the limited penetration of light into the water?
Group of answer choices
Loose root systems
Tall structures with broad leaves
Mutualism with fish
Reliance on tidal rises and falls
Answer:
3
Explanation:
The size of a food chain can vary, but the number of levels that a food chain can reach is limited. Why does this limit exist ?
Answer:
Energy is lost at each trophic level.
Explanation:
hope this helps have a good rest of your day :) ❤
Energy is lost at each trophic level.
What is food chain ?
Food chain, in ecology, the sequence of transfers of matter and energy in the form of food from organism to organism.
What is tropic level?
Trophic level is defined as the position of an organism in the food chain and ranges from a value of 1 for primary producers to 5 for marine mammals and humans.
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♡︎10 points for this question♡︎
Describe an area that would have the most and least bacteria.
Would be very appreciated if you help me out! (Will also be marked as brainliest)
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The thumbs of humans can grasp things because they are ___.
a) upright
b) opposable
c) unjointed
d) thin
Answer: b. is the correct answer opposable
Explanation:
opposable: (of the thumb of a primate) capable of moving toward and touching the other digits on the same hand.
what is this new island made from? sedimentary, metamorphic, or igneous?
Answer:metamorphic
Explanation:
Which two characteristics describe organisms in the kingdom Animalia?
A. They are heterotrophic
B.They are unicellular
C. They are multicellular
D.They have prokaryotic cells
This is a multi (two) answer
Answer:A and C
Explanation:
Answer:
A and C
Explanation:
All members of Animalia are multicellular, and all are heterotrophs (that is, they rely directly or indirectly on other organisms for their nourishment). Most ingest food and digest it in an internal cavity. Animal cells lack the rigid cell walls that characterize plant cells.
I also did the test and got it right.
What is the precipitation of Seattle if:
wind speed (mph) - 7
air pressure (mb) - 1020.8
air temp (f) - 42
cloud cover (%) - 0
Answer:
88
Explanation:
A student has drawn a model of cellular respiration, but it contains 3 errors.
Label each part of the model as "CORRECT" or "WRONG" by choosing from the drop-down menu.
In the next question, you will explain each error you identified in the model
CELLULAR RESPIRATION
1. LIGHT energy
4.
OXYGEN
2. GLUCOSE
>
3. OXYGEN
Note: Water has
intentionally been left out
of this model and therefon
is not an error
5.
Light energy has
been changed into
chemical and
kinetic energy
Answer:
LIGHT energy - correct
OXYGEN - correct
2. GLUCOSE - incorrect
Explanation:
Hope this helps please mark me as brainlyest
According to the kinetic theory of matter, how many particles that make up a substance are constantly in motion?
Answer:
D
Explanation:
According to the kinetic theory of matter, option D. all the particles that make up a substance are constantly in motion.
The Kinetic Theory of Matter states that all matter is made of particles that are atoms and molecules that are constantly in motion in the substance, therefore, particles of all matter have kinetic energy.
Some particles have more kinetic energy than other particles due to fact that all particles of matter do not move at the same speed even though particles of matter are constantly moving.The temperature of matter or object is the average kinetic energy of the particles in an object.Thus, the correct answer is - option D. all the particles.
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Multiple Choice
Which of the following is typical of aerobic respiration?
decreases a plant’s weight
contains two stages, glycolysis and fermentation
produces methane as a byproduct
produces little energy
Answer:
decreases a plant’s weight
Explanation:
Aerobic respiration is a process of respiration in which oxygen is required and the byproducts of aerobic respiration are carbon dioxide, water and energy.
Plants undergo aerobic respiration and it is a catabolic process in which complex compounds in plants turns into simpler compounds. This process reduces the dry weight of the plants.
Glycolysis is the first step in both aerobic and anaerobic respiration so it is not a typical aerobic respiration.
Hence, the correct answer is "decreases a plant’s weight".
What part of a nucleotide accounts for the genetic variation between individuals:
Sugar, Phosphate, Deoxyribose, or Nitrogenous Base?
Answer: Nitrogenous base
Explanation:
Why are green plants considered producers?
Green plants directly absorb sunlight to make energy.
Green plants contain chlorophyll.
Decomposers consume green plants.
Green plants are eaten by secondary consumers.
Answer:
The organisms that are capable of preparing their own food from simple inorganic substances like carbon dioxide and water by using sunlight energy in the presence of chlorophyll are called producers. The green plants synthesize their own food through the process of photosynthesis and thus are called the producers.plants produce food for themselves, they are known as producers.I need to know the answer to number three please :)
Answer:
D- Kingdom
none of the rest makes sense
Neurons are constantly firing on a regular basis in order to keep your body functioning. In your words, describe how a neuron utilizes a stimulus to create an action potential. (Be detailed)
Answer:
Neurons are in charge of receiving stimuli from the environment, transforming them into nervous excitations and transmitting them to the nerve centers, where they organize themselves to give a response.The cycle of depolarization and hyperpolarization of the membrane and return to the resting membrane potential is called the action potential, an all-or-nothing reaction that can occur at rates of up to 1,000 pulses / second. Membrane depolarization that occurs as voltage gate Na + channels open at one point on an axon passively spreads a short distance and triggers the opening of adjacent channels, resulting in the generation of another action potential. In this way the depolarization wave, or nerve impulse, is conducted along the axon.
Explanation:
Neurons are highly specialized cells whose central function consists in the generation and transmission of signals, in order to communicate with the other neurons of the nervous system and with the outside of the organism. They are made up of three parts: the cell body, the dendrites, and the axon. Dendrites are extensions of the cell body with short, tubular branches, through which each neuron receives signals from other neurons. These signals are added or averaged, and in the event that the total intensity of the received stimulus is greater than a certain threshold, the neuron will generate and emit an electrical response signal. This signal will be sent through the axon, which will transmit the information to other neurons through chemical exchange. The axon divides near the end into thin branches that contact other neurons. The point of contact is called the synapse. At the synapse, there is a gap between the two cells called the synaptic cleft. The synapse is produced by the release of chemicals from the presynaptic neuron that excites the postsynaptic, transmitting the informational code. The arrival of an impulse at the end of a nerve fiber causes a chemical compound, a transmitter substance, to be released, which excites the neighboring neuron. The same neuron may have inhibitory and excitatory connections with different neurons, for which it will need to produce different chemicals that act as transmitters. A neuron receives and integrates multiple stimulations through the synapses, those received by the dendrites are added to those received in the soma so that the electrical potential of the cell membrane ends up exceeding the threshold and originates a nerve impulse in the area of the axonal cone. Nerve impulses are electrical signals generated by the spike trigger sites (axon cones) of a neuron as a result of membrane depolarization, which are conducted along the axon to its termination. The transmission of impulses from the endings of a neuron to another neuron, a muscle cell or a gland occurs at the level of the synapses.
choose the correct statement about the earth crust A. the earth crust is thin and could be compared to an eggshell B. most of the earth crust is only 6 km deep C. the earth crust is around 200 km deep D. the earth crust is the thickest layer
''A. the earth's crust is thin and could be compared to an eggshell'' is the correct answer.
Why earth's crust is considered an egg shell?The egg is considered a tiny model of the Earth. The thin shell of the egg represents the Earth's crust which is divided into plates. Both earth and egg have a thin and brittle shells. The crust of the earth is broken into various pieces like the cracked shell of a boiled egg. The mantle of the earth is like the egg white part whereas the core of the earth is present in the center like the egg yolk. The earth's crust is broken into pieces that geologists called it plates. The inside of the planet earth is layered like an egg. Scientists considered the surface of the Earth to be cracked like a big eggshell. They call these pieces tectonic plates that cover the Earth. The plates float slowly on the surface and sometimes crash with each other, and move away from each other.
So we can conclude that option A is the right answer about the earth's crust.
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What factor prevents us from finding fossils from the Precambrian era?
A. Life-forms in this era had no skeletons.
B. This was before life existed on Earth.
C. Life was destroyed by a series of mass extinctions.
D. There are no rocks left from that era.
Answer:
rhe answer is that the rocks of that time are buried deeply under the soil.
The factor that prevents us from finding fossils from the Precambrian era is that life-forms in this era had no skeletons. Therefore, option (A) is correct.
What was Precambrian era?The Precambrian era spans from the formation of Earth about 4.6 billion years ago to the start of the Cambrian period about 541 million years ago. During this time, life on Earth consisted mainly of simple, single-celled organisms such as bacteria and algae.
These organisms lacked the hard shells, bones, and other structures that are typically preserved as fossils. Therefore, the fossil record from the Precambrian era is relatively sparse, consisting mainly of impressions and other traces left by these early organisms in sedimentary rocks.
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Use the point in the diagram to name the figure
Answer:
i dont have anythign on it
Explanation:
What is the end result of DNA replication?
O An mRNA strand that will be used to create a protein.
O two strands of DNA that are identical to cach other
O An MRNA strand that will not be used to create a proteir
O Two strands of DNA that are different from one another.
Answer:
two strands of DNA that are identical to each other
Explanation:
Replication is defined as the process in which two identical copies of DNA is formed from parent DNA strand. The end result of DNA replication is two strands of DNA that are identical to each other which are called chromatids. The process of DNA replication is known as semi-conservative as the end result is consist of one new and one old chain of nucleotides.
Hence, the correct answer is "two strands of DNA that are identical to each other".
Give two examples of phospholipid soluble molecules? How can these molecules move across the cell membrane? What affects the direction of their movement
Answer:
1. Only small uncharged molecules can diffuse freely through phospholipid bilayers (Figure 2.49). Small nonpolar molecules, such as O2 and CO2, are soluble in the lipid bilayer and therefore can readily cross cell membranes. 2. Diffusion through a permeable membrane moves a substance from an area of high concentration (extracellular fluid, in this case) down its concentration gradient (into the cytoplasm). 3. Objects change their motion because unbalanced forces act on them. There are four main factors that affect the motion of objects. These factors are force, friction, inertia, and momentum.
Explanation:
Hope this helps. ^_^
Answer:
Examples include steroids and Vitamins
Phospholipids ,as the name implies fall under the category of lipids. Phospholipids have a hydrophilic "head" which has a strong attraction to water molecules.The hydrophilic head contains a phosphate group which allows for reactivity with water molecules.
Phospholipids also contains two hydrophobic "tails" which has a strong repulsion to water. The tails are derived from fatty acids and are joined by a glycerol molecule. These compounds are less reactive to water molecules .
These properties make phospholipids to be soluble in both water and oil which favors the movement of molecules such as Steroids and Vitamins in and out of the cells through the process called Diffusion.
The direction of movement depends on the concentration of molecules as they usually move from a region of high concentration to a region of lower concentration to ensure there is equilibrium and proper functioning of cells.
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How can research into cell division and aging help humans live longer and healthier?
Answer:
cell division means when the cell will grow old and die if you are able to slow down the cell division process or control it then the aging process can be slowed.
Answer:
because it can help you know what to prevent or to keep doing
Explanation:
In the diagram where do you think differentiation begins to occur?
Answer:
B i believe
Explanation:
What is the relationship between DNA, codons, and proteins?
how many bones do human have
Answer:
206 bones lol cool right
PLZZZZZ HELP!!! WITH 5 STAR THANK AND MARK BRAINLIEST!!! Explain how form and function are related in human cells. Include examples.
Answer:Each cell carries out basic life processes that allow the body to survive. Many human cells are specialized in form and function, as shown in Figure below. Each type of cell in the figure plays a specific role. For example, nerve cells have long projections that help them carry electrical messages to other cells.
Explanation:
Answer:
I agree with the other person
have a good day :)
Explanation:
whats the Location for Postsynaptic
Answer:
is located on an axon
Is the following sentence true or false? An aquifer
can be an area that includes many states.
5. Speed is a __________ but has no direction whereas, velocity is a ______________ which includes direction. A vector has ____________ and _______________.
Speed is a scalar quantity but has no direction whereas, velocity is a magnitude which includes direction. A vector has magnitude and direction.
Answer:
. Speed is a ____scalar quantity______ but has no direction whereas, velocity is a ______vector quantity________ which includes direction. A vector has __magnitude__ and __direction___.
please help me with this homework question!
Answer:
50%
Explanation:
Answer:
a I do believe
Explanation:
can you help me with my question
what are harmones ? why are they produced
Answer:
Hormones are produced by glands and sent into the bloodstream to the various tissues in the body. They send signals to those tissues to tell them what they are supposed to do. When the glands do not produce the right amount of hormones, diseases develop that can affect many aspects of life.
Answer:
hope it helps
Explanation:
Hormones are produced by glands and sent into the bloodstream to the various tissues in the body. They send signals to those tissues to tell them what they are supposed to do. When the glands do not produce the right amount of hormones, diseases develop that can affect many aspects of life.
Which statement best describes the Law of Superposition?
Answer:
B) In undisturbed layers of sedimentary rock, the lowest layers contain the older rocks.
Explanation:
CORRECT
The best statement for law of Superposition is in undisturbed layers of sedimentary rock, the lowest layers contain the older rocks. Thus option B is correct.
What is law of superposition?Law of superposition stated that a key stratigraphic concept indicating that within a sequence of sedimentary rock layers, the oldest layer is at the bottom and the layers are increasingly younger with ascending order in the sequence.
Superposition is defined as the ability of a quantum system to exist in numerous states until it is measured.
It can also be stated that an assumption that serves as a foundation for the sciences of geology, archaeology, and other fields concerned with geological stratigraphy.
Thus, the best statement for law of Superposition is in undisturbed layers of sedimentary rock, the lowest layers contain the older rocks. Thus option B is correct.
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Your question is incomplete, but probably your complete question was
Which statement best describes the Law of Superposition?
A) Each sedimentary rock layer represents 1000 years of Earth's age, much like the rings of a tree
B) In undisturbed layers of sedimentary rock, the lowest layers contain the older rocks.
C) Rocks that form near volcanos are older than surrounding rock