Complete Question:
Which statement best describes a change that usually takes place in the human body when the heart rate increases as a result of exercise?
Group of answer choices.
A. More oxygen is delivered to muscle cells.
B. Blood cells are excreted at a faster rate.
C. The rate of digestion increases.
D. No hormones are produced.
Answer:
A. More oxygen is delivered to muscle cells.
Explanation:
An aerobic exercise refers to all forms of physical activity that an individual engages in, so as to increase the heart rate (from low to high intensity) in response to the level of oxygen required by any activated or working muscle in the human body.
Generally, aerobic exercise help various individuals to prevent cardiovascular diseases because it makes the heart to beat faster (heart rate increases) to enable it supply more oxygen, which makes the heart to effectively and efficiently pump blood more.
Some examples of aerobic exercise (cardiofitness activity) includes cycling, swimming, jogging, walking, skiing etc.
Hence, the statement which best describes a change that usually takes place in the human body when the heart rate increases as a result of exercise is that more oxygen is delivered to muscle cells.
how the body's white blood cells respond to infections.
The passengers are facing forward in the direction that the train is moving. What will happen to the passengers sitting on a train if the train comes to a sudden stop? Question 6 options: They will feel a force pushing them downward. They will feel the force pushing them upward. Their bodies will move backwards. Their bodies will move forward.
Answer:
Their bodies will move forward.
Explanation:
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Please correct me if I am wrong for the third one
Answer:
1. Hypotonic
2.Isotonic
3.Hypertonic
Explanation:
Number 1 is hypo tonic because solute is going into the cell. The cell is getting bigger and expanding. You can think of Hypotonic as getting bigger by using Hypo which can be Hippo. Hippos grow bigger over time.
Number 2 is Isotonic. The water is going in and out at the same rate. Therefore, nothing really changes here.
Number 3 is Hypertonic because the cell has shrunk.
How many moles are in 100 grams of oxygen?
Answer:
2000 because it is the answer and its right
Answer:
15.9994 if you are converting between grams Oxygen and Mole.
Explanation:
Choose the correct statements 1.Self-pollination occurs when the pollen from the anther is deposited on the stigma of the same flower, or another flower on the same plant. 2.Cross-pollination is the transfer of pollen from the anther of one flower to the stigma of another flower on a different individual of the same species. 3cross-pollination occurs when the pollen from the anther is deposited on the stigma of the same flower, or another flower on the same plant. 4.Self-pollination is the transfer of pollen from the anther of one flower to the stigma of another flower on a different individual of the same species.
Answer: The correct statements are 1 and 2:
1.Self-pollination occurs when the pollen from the anther is deposited on the stigma of the same flower, or another flower on the same plant.
2.Cross-pollination is the transfer of pollen from the anther of one flower to the stigma of another flower on a different individual of the same species.
Explanation:
Pollination is the transfer of pollen grains from an anthers to a receptive stigma. In most species of flowering plants, external agents bring about pollination. Also, flowers have evolved special structures and mechanisms to ensure successful pollination.
There are two types of pollination
--> Self pollination: This takes place when mature pollen grains from the anther of a flower fall on the stigma of the same flower or that of another flower on the same plant. This type of pollination brings the male gametes and egg cells of the same plant together. The resultant offspring show very little genetic variation.
--> Cross pollination: This occurs when mature pollen grains of a flower are transferred to the stigma of a flower of another plant of the same or closely related species. This brings the male gametes and egg cells of two different parent plants together. Therefore, there is greater genetic variation among the offspring.
Atomic energy is produced from changes within the_____
of an atom.
1. Protons
2. Neutrons
3. Orbitals
4. Nucleus
Answer:
I believe it is the Nucleus
Explanation:
What is the difference between apparent magnitude and absolute
brightness?
Answer:
Astronomers define star brightness in terms of apparent magnitude. - how bright the star appears from Earth - and absolute magnitude - how a bright the star appears at a standard distance of 32.6 light-years or 10 parsecs.
Explanation:
I majored in Biology
Photosynthesis uses all of the following except
to make food.
carbon dioxide
O light energy
O chemical energy
water
is it’s A?
Answer:
No I think its C
Explanation:
Photosynthesis is a process that takes place due to water, sunlight, carbon dioxide and creates oxygen.
All the green plants carry out the process of photosynthesis in the presence of sunlight, the carbon dioxide, and water.
Thereby releasing oxygen and energy. The first organism that evolved to make photosynthesis was the blue-green algae and later on, cyanobacteria evolved which lead to the origin of oxygen on the earth.Thus the photosynthesis is a process that results when all three are processes by the plants.Giving out the chemical energy in the form of sugar and air to breathe. Hence the correct option is C.
Learn more about the Photosynthesis uses all of the following except.
brainly.com/question/21413948.
True or false?
Submersibles make it possible for scientists to collect data from areas of the ocean that were previously unreachable.
Answer:
The answer is true :)
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Explanation:
Choose the correct description on the realtionship between allels and genes.
Answer:
B
Explanation:
Sorry if it's wrong in the end, but it should be right
The MAIN difference between terrestrial planets and gas giants is
Ferns and moss plants grow from_________?
Answer:
mosses and ferns plants are two types of primitive plants both plants are non flowering plants
Explanation:
therefore both of them are seedless plant as well both moss and ferns under grow Alternatives of generations
in your own words, describe inertia as if you were trying to teach a sixth grader
Answer:
Inertia is an object not wanted to change motion or velocity.
Explanation:
lol its short
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Which biomolecules do not function in supporting a cell?
A Lipids
C Amino acids
B Nucleic acids
D Carbohydrates
The purpose of transcription and translation is to
a. copy DNA to prepare the cell for mitosis
b. make the proteins coded for in the DNA
c. create antibodies to protect the cell from pathogens
d. keep the cell busy
Answer:
make the proteins coded for in the DNAAnswer:
b. make the proteins coded for in the DNA
Explanation:
Transcription and translation take the information in DNA and use it to produce proteins.
Help me asap Question 26 of 30
A leech is a multicellular organism with a segmented body. It does not have
jaws or limbs. Which of the following organisms is a leech most likely to be
closely related to?
Amoeba Sponge
Earthworm
Salmon
Lizard
Kangaroo
Cat
Placental
Hair
Umbs
Jaws
Segmented Body
Multicellular
Unicellular
Common Ancestor
A. Earthworm
B. Amoeba
C. Sponge
D. Salmon
Answer:
I'm thinking an earthworm.
A leech is most likely to be closely related to Earthworms, as they both have segmented bodies and are multicellular organisms. The option is A.
What is leech?A leech is a multicellular organism with a segmented body and does not have jaws or limbs. The terms to consider in this question are: - Multicellular - Segmented Body - Common Ancestor Based on these characteristics, the leech is most closely related to: Earthworm.
Both leeches and earthworms are multicellular organisms with segmented bodies and share a common ancestor. They belong to the phylum Annelida, which consists of segmented worms.
The other options listed (Amoeba, Sponge, Salmon, Lizard, Kangaroo, Cat, Placental, Hair, Jaws, Unicellular, Common Ancestor) do not share these characteristics with leeches.
Therefore, the correct option is A.
Learn more about Leech here:
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Why did the color of the peppered moth change?
The moths’ life cycle changed.
The environment changed.
The amount of variation in the moth population changed.
The number of individual moths in the population changed.
Answer:
The environment changed.
Explanation:
Hope this will help
Answer:
The environment changed.
Explanation:
I took the test and I got it correct
Explain how vaccination protects a child against a viral disease.
Answer:
Explanation:
It doesn’t is actually makes u sick sometimes but if u agree then vaccinations mean when only a bit of the pathogen is ingested into to u for ur body to become immune and so if u get the disease yours body has already made antibodies which contain a special format in which they break down the pathogen faster.and the pathogen will be broken down quickly as the process is faster when your body already contains the code against it.
please help y'all 15 pts!
Answer:
C
Explanation:
Because you see a fish and some leaves, you can conclude that the ocean went away and the trees grew.
How is sedimentary rock layers used to provide evidence for evolution?
Answer:
its not only provide evidence of the history of earth but it also of changes in organisms whose fossil remains have been found in layers
Explanation:
hopes this helps!
PLEASE HELP, will mark brainlest, to who answers with the correct answer
What is some BIOLOGICAL EVENTS.
Answer:
A bioevent or bio-event (a shortening of 'biotic event' or 'biological event') is an event recognised in a sequence of sedimentary rocks, where there is a significant change in the biota as recorded by assemblages of fossils over a relatively short period of time.
Explanation:
1.According to Greek legend the war between the Greeks and the people of Troy was a long and bloody one. And at the center was Helen, the most beautiful woman in all of Greece. And Paris, the Trojan prince who loved her. PLZ HELP ME THIS IS A GRADE!!
If a person is breathing normally, which of the following could prevent him from using his body to exercise normally?
not eating enough food, because cells need molecules from both food and air to work
nothing, because he would be able to exercise normally as long as his cells are getting molecules from the air
not getting enough sleep, because the body only makes energy for exercise while asleep
not getting enough sunlight, because cells need sunlight to function
Answer:
Not eating enough food, because cells need molecules from both food and air to work.
Write a paragraph explaining how energy flows through an ecosystem.
Be sure to use the following terms:
Energy Pyramid Sun
Trophic Level Producer,
Primary Consumer Decomposer
Secondary Consumer Tertiary Consumer.
Answer:
The living organisms of an ecosystem are related through food chains, which gives rise to trophic levels in an ecosystem. There is a flow of energy from one trophic level to the other in a food chain. Producers bring energy from the sun into the community. Primary consumers eat the producers, which makes them herbivores in most communities. Secondary consumers eat the primary consumers, which makes them carnivores. Tertiary consumers eat the secondary consumers. A final link in the food chain are decomposers, which break down the organic matter of the tertiary consumers (or whichever consumer is at the top of the chain) and release nutrients into the soil. Thus, there is flow of energy from Sun ------> Producer ------> Herbivore -------> Carnivore ------> Decomposers.
How energy flows through an ecosystem is summarized below.
Energy flows through an ecosystem in the following order:
Sun ----> Producer ---> Primary consumer ---> Secondary consumer ---> Tertiary consumer ---> Decomposer.
Some of the energy from the sun is fixed by the producer through a process known as photosynthesis. The producers are usually green plants and photosynthetic bacteria.Primary consumers feed directly on the producers.Secondary consumers feed on the primary consumers.Tertiary consumers feed on the secondary consumers.The decomposers feed on the remains of the tertiary consumers.As the energy flows from producer to the different consumers, and to the decomposer, only about 10% of the energy available in each trophic level move to the next with the rest being lost to heat.
Hence, an energy pyramid is created as we move from the lower trophic level to higher trophic levels.
More on energy flow in an ecosystem can be found here: https://brainly.com/question/4467320
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Which statement best describes the result of meiosis?
A.
It produces body cells.
B.
It causes alleles to deform.
C.
It prevents genetic mutation.
D.
It produces reproductive cells.
Answer:
It's D
Explanation:
What is the difference between a substrate and an active site?
Answer:
a reactant in a chemical reaction is called a substrate when acted upon by enzyme. an active site is the part of an enzyme to which substrates bind and where a reaction is catalyzed. :)
What causes the light to refract as it
passes from air to water?
Answer:
Light refracts whenever it travels at an angle into a substance with a different refractive index (optical density). This change of direction is caused by a change in speed. When light travels from air into water, it slows down, causing it to change direction slightly. This change of direction is called refraction
Hope this helps.
Which physical structures are present in amphibians, but not in reptiles, when they first hatch?
scales and fins
scales and lungs
gills and fins
thin skin and lungs
Answer:
gills and fins
Explanation:
15.
An object with a mass of 20.0 kg has a force of 5.0 newtons applied to it.
What is the resulting acceleration of the object?
Answer:
0.25m/s2
Explanation:
Force = mass x acceleration
5 = 20 x a
a = 5 ÷ 20
= 0.25m/s2