What prevents the blood in veins from flowing in the wrong direction?.
Answer:
The heart valves
Explanation:
The heart valves prevent blood from flowing in the wrong direction in the heart. The valves are held in the proper place because of the chordae tendinae.
can the shape of globin change ?
Answer:
People with the sickle cell mutation in both copies of the HBB gene produce proteins that clump together and lead to changes in the shape and behavior of red blood cells.
Hey Adam are we good with you and I hope your?
Answer: yo whatever you’re going through, just don’t apologize on brainly
Explanation:
True or False: In a box and whisker plot, 50% of the data is between Q1 and the median
Answer:
Minimum = 0%
Q1 (Lower Quartile) = 25%
Median = 50%
Q3 (Upper Quartile) = 75%
Maximum = 100%
That is true. In a box and whisker plot, Q1 is the first quartile (first 25% of the data) is between the lower quartile (Q1) and the median. The median is the middle, so 50% will fall between Q1 and the median. It's important to understand the various measures of central tendency and how they can be used to analyze the spread of data within a given set, which can provide valuable insights and understanding about the overall trends present within the data.
Adipose tissue is one of the most hydrated of all tissues in the human body
Answer:
False
Explanation:
Adipose tissue is one of the lease hydratetd of all tissues in the human body.
Adipose tissue is one of the most hydrated of all tissues in the human body and is one of the maximum hydrated of all tissues withinside the human frame.
What is intracellular fluid?The maximum ample cation in intracellular fluid is sodium. Solutes, irrespective of size, are capable of pass freely among booths due to the fact water includes them alongside the osmotic gradients.
Adipose tissue carries approximately 10% of water, even as muscle groups carries approximately 75%. In Netter's Atlas of Human Physiology, frame water is damaged down into the subsequent booths: Intracellular fluid (2/three of frame water) is fluid contained inside cells.
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Which of the following is the most likely flow of energy in an aquatic ecosystem? a. phytoplankton → mammal → zooplankton → fish b. phytoplankton → zooplankton → fish → mammal c. zooplankton → phytoplankton → mammal → fish d. mammal → fish → zooplankton → phytoplankton
The flow of energy in an aquatic ecosystem phytoplankton → zooplankton → fish → mammal.
What does the bottom-up model?The bottom-up effect means that a lower trophic level in the biological network affects the community structure of higher trophic levels by means of resource restriction.
whereas the top-down effect refers to a higher trophic level that influences the community structure of a lower trophic level through predation.
Thus, opotion "B" is correct.
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please what is meant by photosynthesis
Answer:
Photosynthesis is a process used by plants and other organisms to convert light energy into chemical energy that, through cellular respiration, can later be released to fuel the organism's activities. Some of this chemical energy is stored in carbohydrate molecules, such as sugars and starches, which are synthesized from carbon dioxide and water, In most cases, oxygen is also released as a waste product that stores three times more chemical energy than the carbohydrates. Most plants, algae, and cyanobacteria perform photosynthesis; such organisms are called photoautotrophs. Photosynthesis is largely responsible for producing and maintaining the oxygen content of the Earth's atmosphere, and supplies most of the energy necessary for life on Earth.
Explanation:
Identify the independent variable in the experiment represented in Figure 3B. Justify the use of hair from individuals unaffected with FT as the control in the experiment represented in Figures 3A and 3B. Based on the data in Figure 3B, describe the FT effect of the disorder on the proportion of hairs in the growth phase. Based on Figure 2, if individuals 3 and 4 have another child, calculate the probability that the child will be affected
Based on the experimental data, the independent variable is the protein fibroblast growth factor-5, FGF5 which is unaffected by hair growth.
What is FT?Familial trichomegaly, FT, is a genetic disorder which results in abnormally long eyes in affected individuals.
FT is caused by a mutation in the genes that coded for the protein fibroblast growth factor-5, FGF5.
In research, the independent variable is unaffected by changes in another variable, butis changed and controlled by the researcher.
Based in the experiments, the independent variable is the protein fibroblast growth factor-5, FGF5.
Therefore, the independent variable is the protein fibroblast growth factor-5, FGF5 which is unaffected by hair growth.
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Answer this pls!!!!!!!
What do enzymes do?
Answer:
Enzymes are proteins that help speed up metabolism, or the chemical reactions in our bodies. They build some substances and break others down.
Explanation:
Movement of phloem sap from a source to a sink ________.
Bulk flow refers to the movement of phloem sap from a source to a sink in plants.
What is Phloem?This is a vascular tissue found in plants which helps to transport and distribution of the organic nutrients derived from photosynthesis.
Bulk flow occur when these nutrients present in the phloem sap are moved from source to sink.
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How and why do organisms interact with one another?
Answer:
It's in their makeup to interact
Explanation
They need to interact to survive, to exist, to reproduce!
Answer:Organisms interact because of mating, competition for food resources, defense, and assertion of dominance.
Explanation:
HELP ME!!!!! What is an important part of scientific methods? there is more then one answer so Select all correct answers.
A. establishing state of the art labs
B. forming conclusions
C. making hypothesis
D. using computers
Answer:
B and C
Explanation:
establishing state of the art labs isn't a part of the scientific method and neither is using computers
What is the shape of DNA when it is not undergoing replication?
Explanation:
If DNA replication does not occur, then the cell cycle will not proceed to the next stage and the subsequent division will not happen. It will lead to cell death.
When pigs reproduce, which two types of cells pass on information from the pigs to the piglets?
Answer:
nuclei
Explanation:
Nuclei male and nuclei female to create a zygote
The two type of cells that pass on information from the pigs to the piglet is the male and female reproductive cells.
What is male and female reproductive cell?The male and female reproductive cell contains information about the parents that are passed on to the offspring.
The piglet inherit some genes from both parents through their cells.
Therefore, The two type of cells that pass on information from the pigs to the piglet is the male and female reproductive cells.
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3. use the simulation to observe the first-generation offspring from the cross between flowers c and a. what is the most likely genotype of flower c? use a punnett square to justify your explanation.
To observe the first generation offspring of the cross between the flowers c and a. the most likely genotype of flower c is its color.
What is genetic probability?Probability serves to mathematically estimate the possibility of events that happen by chance, that is, as a matter of luck. It can be defined by the following formula: Where P is the probability that an event will occur, A is the number of desired events, and S is the total number of possible events.
With this information, we can observe the first generation offspring of the cross between the flowers c and a. the most likely genotype of flower c is its color.
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Answer: The most likely genotype is color.
Explanation:
The picture shows us how the Sun's rays strike Earth. Because of the Earth's tilt on its axis, some parts of Earth are having summer
and others, winter. What letter or letters on the Earth are experiencing summer?
A) B
B) C
C) B and C
D) C and D
Answer:
B n C
Explanation: You can tell this because when you look at the diagram it shows B and C facing the sun so that means it's summer.
Answer
D.) C and D
Explanation:
It may look like B and C, but the sun hardly reaches up in the north, plus its axis is shifted so it's not technically summer for them yet, this leaves the bottom, which will rotate and give both sides the taste of summer glory.
Once the earth rotates more, it will be summer for B. and A.
But the graph shows that the answer is
D.) C and D
HEEEELLLLPPPPP
Deforestation is the second leading cause of global warming (climate change) worldwide, and it produces about 24% of global greenhouse gas emissions. Deforestation in the tropical rainforests contributes more carbon dioxide to the atmosphere than the sum of all cars and trucks that drive on the world’s roads.
Why would deforestation this lead to more carbon dioxide?
a
The changed habitats support more animals, like native birds and mammals, that produce more carbon dioxide.
b
The increased amount of timber harvested produces oxygen gas, which encourages the wildlife to generate carbon dioxide.
c
Loss of trees leads to a decrease of the ability of forests to act as carbon sinks to remove carbon dioxide from the atmosphere.
d
Equipment used for clear-cutting produce metric tons of carbon dioxide, which is released into the atmosphere during the process of deforestation
Answer:
C
Explanation:
According to Worldwildlife.org, Forest play a critical role in mitigating climate change because they act as a carbon sink - soaking up carbon dioxide that otherwise be free in the atmosphere and contribute to ongoing changes in climate patterns.
Which statement presents a credible and unbiased argument for selecting a particular livestock animal as a human organ donor?
(Please help, this is a practice question btw)
A. A calf is the best candidate, because a cow's gestation period most closely matches a human's (9 months/280 days), and that feels most natural.
B. A lamb is the best candidate, because sheep are less likely to be sold as a meat source and because lambs are inherently cute.
C. A piglet is the best candidate. A pig's gestation period is the briefest, so human hearts could be more quickly grown and transplanted.
D. Livestock candidates should be chosen based on the patient's preference, otherwise there could be organ rejection.
Livestock candidates should be chosen based on the patient's preference as there could be organ rejection is an unbiased argument.
What is an Unbiased argument?This type of argument shows the reader both sides and bids the reader decide.
The other options tends to support an animal which makes them biased but option D doesn't and has a credible reason which is why it's the most appropriate choice.
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Florida experiences a lot of rain in the summer months. How do plants respond to this?
Answer:
They Start to Sprout and bud
Answer:
They grow more and produce flowers or fruit.
Explanation:
I got it right on my quiz haha
Hope this helped/helps!!
Have a nice day alsooo!
Let's review how photosynthesis works by looking at the
origin of the output molecules. Please identify which
statements are accurate.
Oxygen is consumed during the process of photosynthesis
An aquatic photosynthetic organism will produce oxygen
bubbles as it carries out photosynthesis
Only plants generate oxygen as a byproduct of photosynthesis
Glucose is consumed during the process of photosynthesis
Photosynthesis is a process that produces sugar
Answer:
Photosynthesis is a process by which green plants turn carbon dioxide and water into food using energy from sunlight.
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11. Evaluate how a person's blood calcium levels
would be affected if his or her thyroid gland
stopped working.
our thyroid glands plays a main role in a human body. It secretes thyroxine and calcitonin. In which thyroxine help in growth and cellular metabolism and calcitonin helps to regulates calcium concentration in blood . If thyroid gland stops working then there is low level of calcium in our blood, which leads to mental and hormonal disorder. In this way a person's blood calcium level would be affected if his/her thyroid gland stops working.
What does it mean to say that an organism is well adapted to its environment?.
How does a comparison of bone structures of two animal provide evidence of an evolutionary relationship
Answer: Comparative Anatomy
Both provide evidence for evolution. Homologous structures are structures that are similar in related organisms because they were inherited from a common ancestor. These structures may or may not have the same function in the descendants.
Explanation: hope it helps
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Over the course of evolution, the bones of the animals undergo a gradual change in shape as well as in size. But still, two closely related animals have an identical overall layout of the bone.
What do you mean by Evolution?Evolution may be defined as a gradual process that involves changes or modifications in the members of the same or different species over a long period of time.
The bones of descent common ancestors reveal the evolutionary relationships among the animals. In relationship involves homologous and analogous structures.
The homologous structure reveals the structural similarity between the animals, while the analogous structures reveal the functional similarity.
Therefore, it is well described above.
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What organism meets the criteria for group b? question 3 options: hammerhead shark emperor penguin rattle snake box turtle
Emperor penguin meets the criteria for Group B.
The Emperor penguin is an organism that meets the criteria for group b.
Are penguins Endotherm or Ectotherm?Endotherms: Penguins, and prairie dogs, like most other birds and mammals, are endotherms. Iguanas and rattlesnakes, like most other reptiles along with most fishes, amphibians, and invertebrates are ectotherms.
Endotherms generate most of the heat they need internally.
Thus, the emperor penguin is an organism that meets the criteria for group b.
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Both plant and animal cells as well as many unicellular organisms contain
Answer:
Both plant and animal cells as well as many unicellular organisms, contain a mitochondria and nucleus which supply energy for a cell .
Explanation:
Cell is the basic functional and structural unit of life. Plant, animal as well as many unicellular organisms contain cell organelles and mitochondria which supply energy to cells.
What are different cell organelles?Cell organelles are the structures inside a cell that floats inside the cytoplasm.
Any cell that is living has cell organelles.
Cell organelles are as follows:
Mitochondria: form ATP and provides energy to the cell.Nucleus: Brain of the cell.Ribosome: helps in protein synthesis.Endoplasmic reticulum: It helps in the transport of substances.Golgi bodies: involves in packaging.Lysosome: involved in digestion of cell.Thus, Both plant and animal cells as well as many unicellular organisms contain organelles and mitochondria that provides energy to the cell.
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researcher investigates a recently discovered species of plant. The plant has vascular tissues and exhibits a sporophyte and a gametophyte generation, but lacks seeds. How should the researcher classify the plant?
pteridophyte
Explanation:As you might guess, Pteridophyte are plants that can move through the air. They do not make new plants by releasing seeds.
Other pteridophyte characteristics include the following:
They exhibit alternation of generations, in which the sporophyte and gametophyte generations are observed.Sporophytes are plants with true roots, stems, and leaves.Sporangia grow in clusters on sporophylls.I hope this helps you
:)
What is mechanical digestion? Describe the first stage of mechanical digestion.
Mechanical digestion means breaking down food mechanically. By chewing and tearing with teeth, food breaks down into smaller parts and no enzymes are used.
What is the first step in mechanical digestion?The complex pieces of food that are eaten have to be split into simpler particles that can be acted upon by different enzymes.
This is mechanical digestion, which starts in the mouth with chewing or mastication and continues with churning and combining actions in the stomach.
Thus, this could be the answer.
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Could melanin granules be moved by dynein and kinesin along an actin microfilament?.
We can confirm that melanin granules could in fact not be moved by dynein and kinesin along an actin microfilament.
Why can these substances not be moved along a microfilament?This has to do with the fact that these proteins are specific to microtubules, and therefore are not able to move along microfilaments. This is why the dynein and kinesin motor proteins would not be able to transport the granules along microfilaments.
Therefore, we can confirm that melanin granules could in fact not be moved by dynein and kinesin along an actin microfilament.
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What happens to the lac operon when both glucose and lactose are present?
Answer:
If both glucose and lactose are both present, lactose binds to the repressor and prevents it from binding to the operator region. The block of lac gene transcription is thus lifted, and a small amount of mRNA is produced.
Explanation:
Plants are able to engage in photosynthesis because they produce a chemical that can absorb sunlight to synthesize glucose. What is this chemical?.
Answer:
Chlorophyll
Explanation:
Plants engage in photosynthesis with the help of chlorophyll.
In the process : Carbon dioxide is used and oxigen is produced.