Deoxygenated blood from the leg muscle returns to the heart, moves to the lungs to be oxygenated, goes back to the heart, and flows through the body again.
The circulatory system is a complex system in the body whose function is to keep the flow of oxygenated blood throughout the body.
This system is composed of multiple steps that create a cycle and usually involve the following organs:
The heart.The lungs.Blood vessels.VeinsArteriesHere are the steps if we start with deoxygenated blood in the muscles.
The deoxygenated blood returns to the heart through the veins. This blood has no oxygen because this has been used.An important vein known as the vena cava pumps the blood into the right atrium of the heart.The blood then floods into the right ventricle.Later, as the heart beats the blood moves from the heart to the pulmonary artery.In the lungs, the blood is oxygenated and then it returns to the heart.The blood goes to the left atrium and moves to the left ventricle.The blood is pumped from the heart to the rest of the body including muscles.Learn more about blood in: https://brainly.com/question/11568067
What is Ecology? Slide Deck
Answer: Ecology is the study of the relationships between living organisms, including humans, and their physical environment.
Explanation: Ecology is the study of these forces, what produces them, and the complex relationships between organisms and each other, and organisms and their non-living environment.
how does a mushroom get nutrients
Answer:
Mushrooms don't have chlorophyll like plants. They cannot produce their food directly from sunlight. Most mushrooms are considered saprophytes — they get their nutrition from metabolizing non living organic matter. ... Fungi differ from plants and animals on how they obtain their nutrients.
Explanation:
Ultraviolet light might cause DNA damage, which is known as a mutation. How might such damage affect events that take place during the synthesis, or S phase, and mitosis of the cell cycle
Answer:
Every new DNA copy is going to have damaged DNA
Explanation:
Ultraviolet light might cause DNA damage, which is known as a mutation. Every new DNA copy is going to have damaged DNA that take place during the synthesis, or S phase, and mitosis of the cell cycle.
What is mutation ?Mutations are defined as the change in the nucleotide sequence of genetic material due to different process such as substitution, deletion or insertion of the nucleotides leading to changed or faulty protein.
The type of mutations leads to the early and delayed termination of the transcription of a gene, mutation of a single nucleotide leads to termination of transcription otherwise called as nonsense mutation.
If a mutation shows no effect on the protein, known as the silent mutation.
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( please help me)
True/False (1 pt. each)
Please answer the following questions with True (A) or False (B)
13. Cellular respir... https://brainly.com/question/25758046
Answer:
A true true true true story and it
Smaug tells Bilbo he doesn't like
Question 2 options:
dwarves
hobbits
men
Answer:
dwarves
Explanation:
Areas of the body with a high degree of sensory acuity (very sensitive) have _________ receptor fields.
Areas of the body with a high degree of sensory acuity (very sensitive) have SMALL receptor fields. It determines how accurately a stimulus can be located.
Sensory acuity indicates how accurately a given stimulus is located.
Sensory acuity depends on two major factors: the density of sensory receptors, and the size of receptive (neuronal) fields.
These receptors can respond to different stimuli such as, among others, temperature factors (i.e., thermoreceptor), chemical factors (i.e., chemoreceptor), pressure factors (i.e., mechanoreceptor), etc.
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if an enzyme is completely denatured, it can still make some product.
True or False
Answer:
mark me brainliest
Explanation:
Enzymes work consistently until they are dissolved, or become denatured. When enzymes denature, they are no longer active and cannot function.Answer:
Explanation:
An enzyme is a biological protein molecule made up of thousands of amino acids. ... Enzymes work consistently until they are dissolved, or become denatured. When enzymes denature, they are no longer active and cannot function.
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tails face each other within the bilayer and form a region that
5. In a lipid bilayer, the
excludes water:
a. Hypertonic
b. Hydrophilic
C. Hydrophobic
d. Hypotonic
Answer:
F her where it counts
Explanation:
Which of the following organisms belong to the order Caudata? (Choose all that apply)
A. toad
B. waterdog
C. salamander
D. newt
Answer:
b, c and d
Explanation:
Waterdog, salamander and newt all belong to the order caudata.
What is order Caudata?The present salamanders and all extinct species of amphibians that are more closely related to salamanders than to frogs are included in the Caudata group of amphibians.
The existence of a developed tail, the comparable length of all their limbs, the presence of gills in aquatic larvae, the presence of teeth on both jaws, the lack of tympanic ears, and the presence of ribs are all shared-derived characteristics of Caudata.
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what is the primary limiting factor that determines why no female animal can produce a very large number of very large eggs?
Answer:
There are energy constraints.
The primary limiting factor that determines why no female animal can produce a very large number of very large eggs is there are energy constrains.
What is limiting factor?Seven births per year are possible for cottontail rabbits (Sylvilagus floridanus), which are females.
Every spring, a female American toad (Anaxyrus americanus) can produce thousands of eggs. So why aren't the eastern United States' meadows and forests practically teeming with rabbits and toads.
In nature, what ecologists refer to as "limiting factors" affect population size and growth rates.
Cottontail rabbits require grasses and other plants for feeding, water for drinking, and a secure environment for raising their young.
Therefore, The primary limiting factor that determines why no female animal can produce a very large number of very large eggs is there are energy constrains.
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Can birth defects that are environmental be prevented?
Answer:
Most birth defects can't be prevented, but you can take some steps to reduce the likelihood of environmental effects. Remember to always discuss your concerns with your healthcare provider and follow their instructions regarding screening tests, medications, etc.
Explanation:
what are the effects of consuming a diet made up mostly of fats?
Answer:
acetyl-CoA concentration increases
acetone concentration increases
oxaloacetate concentration decreases
Explanation:
Mark me brainly please
Which statement explains the function of a lysosome?
Answer: break down lipids, carbohydrates, and proteins into small molecules
Explanation:
Lysosomes help in the removal of waste material from the cell.
What are lysosomes?
An organelle of a cell that is membrane-bound and houses digestive enzymes is called a lysosome. Numerous cell functions include lysosomes. They disassemble extra or worn-out cell components. They might be utilized to eliminate invasive bacteria and viruses. Lysosomes can assist a cell in self-destruction in a process known as programmed cell death, or apoptosis, if the damage is irreparable.
Particularly acidic organelles include lysosomes. Therefore, it must be shielded from the remainder of the cell's interior. This means that the digestive enzymes are stored in a compartment with a membrane surrounding them since they need to be in an acidic, low-pH environment.
These enzymes, known as hydrolytic enzymes, convert big molecules into smaller ones. For instance, huge proteins can be broken down into amino acids, large carbs can be turned into simple sugars, and large lipids may be reduced to single fatty acids. And whenever they do that, the remaining parts of the cell receive the nutrients they require to.
Therefore, if you are unable to accomplish that, it will not be able to convert huge molecules into smaller ones. These big molecules will be stored by you, and this is an illness. Another variety of lysosome storage disorders prevents the little molecules created by the big molecules from leaving the lysosome.
Therefore, lysosomes help in the removal of waste materials from the cell.
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Suppose a father of blood type A and a mother of blood type B have a child of type O. Is this possible? If they have more children, what could their blood types be?
Answer:
no it can't be possible (but it depends if the fathers blood group is AA not AO and the mother's group is BB not BO) otherwise it can't be possible
Explanation:
blood group O is recessive so both parents must have this type of blood group or at least one of them to have an offspring with this blood group
if they had more children they'd have blood groups A,B or AB
The energy from the electrons moving through the ETC does what?
A). Creates oxygen
B). Creates water
C). Pumps hydrogen ions across the membrane
Answer:
Creates water...........
4. What is X-Ray Crystallography?
Which of the following best describes how mitosis is related to cellular
reproduction?
10 points
Mitosis is a phase in asexual reproduction that results in the formation of similar, but
not identical, nuclei in the daughter cells.
Mitosis is a phase in asexual reproduction that results in the formation of identical
nuclei in the daughter cells.
Mitosis is a phase in sexual reproduction that results in the formation of similar, but
not identical, nuclei in the daughter cells.
Mitosis is a phase in sexual reproduction that results in the formation of identical
nuclei in the daughter cells.
Answer:
Option B.Mitosis is a phase in asexual reproduction that results in the formation of identical nuclei in the daughter cells.
Explanation:
How are latitude and altitude similar and diffrent
Latitude is the distance north or south of the equator. Altitude is the height of an object above sea level. Latitude and altitude affect vegetation in similar ways.
Explanation:
Which part of the brain creates three-dimensional visual images from sensory information from the optic nerve
Answer:
occipital lobe
Explanation:
1. The ______________ is often referred to as the powerhouse of the cell since it is where sugar is used to generate energy.
2. The __________ of a plant cell are where the photosynthesis takes place.
3. What is the difference between a cell wall or a cell membrane?
This may help whoever answers the question. These questions are from a video. Here is the link: https://www.generationgenius.com/videolessons/plant-and-animal-cells-video-for-kids/?share-link=4B2A8
Answer:
1. Mitochondria
2. Chloroplasts
3. Cell wall is rigid outer layer providing strength and support, found in plant cells, whereas the cell membrane has a more functional role in communication and cell responses, as well as substance exchange
The plant tissue carrying out the function of carrying water from the roots to the leaves is:
Answer:
Xylem, plant vascular tissue that conveys water and dissolved minerals from the roots to the rest of the plant and also provides physical support. Xylem tissue consists of a variety of specialized, water-conducting cells known as tracheary elements.
Explanation:
what property of rna enables some rna molecules to function as enzymes?
Answer:
Property 1. Some bases in RNA have functional groups.
Property 2. it has a 3-D structure because it has the ability to base pair with itself.
Property 3. RNA can hydrogen bond with other nucleic acid molecules.
RNA can act as an enzyme which is known as Ribozyme because of the presence of some properties such as the ability to form base pair with itself, presence of functional groups, etc.
What are Ribozymes?The ribozymes are the catalytic RNA molecules, which were first identified in the early 1980s. They show the intrinsic property of breaking and forming covalent bonds in the RNA molecules. In many ways, ribozymes can be compared to the protein enzymes which can catalyze the cleavage of peptide bonds in different proteins or peptide molecules.
The term ribozyme refers to the enzymatic activity of RNA and the ribonucleic acid nature of RNA at the same time. They can catalyze the formation of polypeptide molecules by decreasing the activation entropy of the reaction.
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When does cytokinesis occur?
A. G₁
B. S
C. G₂
D. M
Answer:
Cytokinesis occurs in D M
Which of these will increase as the human population increases?
Answer:
When births are lower than deaths under carrying capacity, the population increases. When births are over deaths over carrying capacity, the population decreases. ... These have an increasing effect as the population increases. Food supply, competition, and parasites would be 3 examples of this.
Explanation:
Why is the California Floristic Province unique compared to other biodiversity hotspots around the world?
Answer:
Plants. Like other Mediterranean-type ecosystems, the California Floristic Province is distinguished more by the endemism of its plants than its animals. Of nearly 3,500 species of vascular plants in the hotspot, more than 61 percent are found nowhere else in the world. About 52 plant genera are also endemic.
Explanation:
Hershey and Chase relied on ________ to physically separate the infected bacterial cells from the phage ghosts.
Answer:
ultracentrifugation
Explanation:
So now this is an easy question.
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NOTE: Need perfect answers.
Option A and B are true because mitochondria have their own DNA known as mitochondrial DNA. Also, they make some of their own proteins because they have their own DNA and ribosomes. So they are also called semi-autonomous organelles.
They are not static because their structure changes every few seconds.
Hope it helps.
Do comment if you have any query.
Cells that are unique in their ability to form other cells are called stem cells and are commonly used in ____________ to create new cells and tissues for treating illnesses like diabetes and Parkinson disease.
Answer:
therapeutic cloning
Explanation:
2. Explain how a gene pool and biological evolution are related.
3. How could a natural disaster result in genetic drift?
a
4. Explain what survival of the fittest means.
5. How does artificial selection provide evidence for evolution by natural selection?
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