The second heart sound is heard during which phase of the cardiac cycle?.
We have that the second heart sound is heard when the semilunar valves opens.
Cardiac CycleThe cardiac cycle is simply defined as the complete process of the human heart from the beginning of one heartbeat to the beginning of the next.
Generally, the second heart sound is associated with the opening of the semilunar valves.
Therefore, when the semilunar valves opens.
For more information on Valves visit
https://brainly.com/question/2622341
Why should the number of each kind of atom be equal on
both sides of a chemical reaction?
Answer:
The law of conservation of mass governs all chemical equations, stating that matter cannot be created or destroyed. As a result, each element must have the same number of atoms on both sides of a chemical equation.
The _______ of a sensory receptor may be irregular in shape and overlap with those of neighboring receptors. The size of this area determines the sensitivity to a stimulus.
Answer:
The receptive field
Explanation:
Quizlet
How do Codominance and Incomplete dominance affect the inheritance of traits? Question 5
What is the main source of energy for cellular respiration.
Answer: Glucose
Explanation: Glucose is used for all plants and animals to create energy via means of cellular respiration. The glucose is broken down into useable energy with the help of oxygen and other important molecules.
What is the name of the enzyme that is responsible for building a mrna strand that is complementary to a dna template strand?.
According to your cladogram, what species are dragonflies most closely related to? How
do you know?
The spreading out of molecules from a center of higher concentration is the result of.
We have that the spreading out of molecules from a center of higher concentration is the result of Diffusion
Diffusion
DiffusionGenerally, Diffusion is the movement of mainly gaseous bodies from an area where it is at higher concentration to an area where it is at lower concentration.
Therefore, The spreading out of molecules from a center of higher concentration is the result of Diffusion as seen in the definition
For more information on Diffusion visit
https://brainly.com/question/6564044
Dynamic equilibrium is detected by receptor regions called . 2. Static equilibrium receptors are located in the vestibular apparatus branch called . 3. Static equilibrium is detected by receptors within membranous sacs called maculae. 4. Dynamic equilibrium receptors are located in the vestibular apparatus branch called . 5. The bending of dynamic equilibrium receptors is caused by the gelatinous cap called the . 6. The bending of static equilibrium receptors is caused by tiny stones called
Receptors placed in the different areas of the vestibular apparatus detect the types of equilibriums. 1) crista ampullaris, 2) utricle and saccule, 3) maculae, 4) semicircular canals, 5) cupula, 6) otoliths.
How is the vestibular apparatus composed?Three main areas compose the vestibular apparatus. These are the
utricle, saccule, and semicircular canals. What are the different types of equilibriums?The vestibular apparatus detects two types of equilibriums,
• The static equilibrium → Head and body position relative to gravity
• The dynamic equilibrium → Head and body position relative to rotational acceleration and deceleration.
These types of equilibriums are detected by receptors placed in different areas of the vestibular apparatus.
• Static equilibrium receptors are located in the macula of the utricle and saccule. They help to maintain balance.
• Dynamic equilibrium receptors are located in the semicircular canals. They provide information about the rotational movement.
The sensory hairs are located in the crista of the ampulla, at the base of each canal (crista ampullaris).
The sensory hairs are covered by a dense gelatinous material named cupula, the otolithic membrane.
The otoliths are calcium carbonate crystals placed over the cupula. Their movements depend on the head’s movements.
You will learn more about the types of equilibrium at:
https://brainly.com/question/24812026
https://brainly.com/question/538664
In embryonic stage humans, birds and fish are similar in many aspects
why
help me answer this fast
Answer:
The developing of the humans, fish and other kind of embryos share the features like tails and gill like features. The human embryos resemble that of other species because these are related with the evolutionary relationship belonging to the same ancestor.
Explanation:
I hope this helps!Industries and car manufacturers are constantly working to lower their emissions. Factories use
something called a scrubber to help lower emissions. What do car manufacturers add to cars to help
lower emissions? (4b)
O oil drip pan
O scrubber
O catalytic converter
O pistons
Answer:
c catalytic converter
Explanation:
i just took the test
______ are drugs that liquefy and dilute viscid secretions of the respiratory tract, thereby helping to evacuate those secretions.
Answer:
I believe the answer to this question is “expectorants”.
I hope this helps.
What are two ways humans impact the nitrogen cycle.
Answer:
burning up fossil fuels and making fertilizers
Question 17 of 20
Which of these descriptions most likely represents a human community with
the highest death rates due to disease?
A. Low population density, less access to technology
B. High economic status, more access to technology
C. Low economic status, more access to technology
O D. High population density, low economic status
SUBMIT
I think it is D because of the question
Some members of the Euglenids are photosynthetic, yet they will lose their photosynthetic pigment if left in the dark. True or False: After storing Euglenids in the dark, the loss of the photosynthetic pigment is permanent.
A) Some members of the Euglenoids lose their photosynthetic pigment when left in Dark : TRUE
B )The loss of photosynthetic pigment in Euglenids stored in the dark is permanent : False
What are EuglenasEuglenas are unicellular organisms belonging to the kingdom Protista, when kept in the dark for too long Euglenoids begin to lose their chlorophyll. As it loses its chlorophyll it becomes unable to produce its own food and starts consuming bacterias within its habitat.
The loss of chlorophyll in Euglenids can be regained after it is been exposed to sunlight and allowed to grow exponentially for several weeks.
Hence we can conclude that Some members of the Euglenoids lose their photosynthetic pigment when left in Dark : TRUE while The loss of photosynthetic pigment in Euglenids stored in the dark is permanent : False
Learn more about Euglenoids : https://brainly.com/question/1278307
Which osseous tissue is found on the surface of bones and composed of tightly arranged parallel osteons?.
Question 26:
Answer each of the following questions clearly and concisely.
1. Compare and discuss how cells store energy and release energy using ATP. Be specific!
2. Compare lactic acid fermentation and alcoholic fermentation by describing what pyruvic acid is changed into. Be sure to include what type of organism each one takes place in.
What is pyruvic acid changed into? Organism:
Alcoholic Fermentation
Lactic Acid Fermentation
3. Name the three processes of aerobic cellular respiration. What is the total ATP produced from one glucose?
3 Processes of Cellular Respiration:
4. Name the two stages of photosynthesis and list the starting molecule(s) and ending molecule(s) of each.
Stages Starting Molecule(s) Product(s)
5. What is the general chemical equation of photosynthesis?
6. When and why does our body use lactic acid fermentation?
7. Explain how the equations for photosynthesis and cellular respiration compare.
Question 27:
Critical Reading
Read these passages from the text and answer the questions that follow.
Fermentation
An important way of making ATP without oxygen is called fermentation. It involves glycolysis but not the other two stages of aerobic respiration. Many bacteria and yeasts carry out fermentation. People use these organisms to make yogurt, bread, wine, and biofuels. Human muscle cells also use fermentation. This occurs when muscle cells cannot get oxygen fast enough to meet their energy needs through aerobic respiration. There are two types of fermentation: lactic acid fermentation and alcoholic fermentation. Both types are described below.
Lactic Acid Fermentation
In lactic acid fermentation, pyruvic acid from glycolysis changes to lactic acid. In the process, NAD+ forms from NADH. NAD+, in turn, lets glycolysis continue. This results in additional molecules of ATP. This type of fermentation is carried out by the bacteria in yogurt. It is also used by your muscle cells when you work them hard and fast.
Did you ever run a race and notice that your muscles feel tired and sore afterward? This is because your muscle cells use lactic acid fermentation for energy. This causes lactic acid to build up in the muscles. It is the buildup of lactic acid that makes the muscles feel tired and sore.
Alcoholic Fermentation
In alcoholic fermentation, pyruvic acid changes to alcohol and carbon dioxide. NAD+ also forms from NADH, allowing glycolysis to continue making ATP. This type of fermentation is carried out by yeasts and some bacteria. It is used to make bread, wine, and biofuels.
Alcoholic fermentation produces ethanol and NAD+. The NAD+ allows glycolysis to continue making ATP.
Have your parents ever put corn in the gas tank of their car? They did if they used gas-containing ethanol. Ethanol is produced by the alcoholic fermentation of glucose in corn or other plants. This type of fermentation also explains why bread dough rises. Yeasts in bread dough use alcoholic fermentation and produce carbon dioxide gas. The gas forms bubbles in the dough, which causes the dough to expand. The bubbles also leave small holes in the bread after it bakes, making the bread light and fluffy.
Questions
1. What is fermentation?
2. Why is NAD+ so important in fermentation?
3. Both lactic acid fermentation and alcoholic fermentation begin with the same molecule. What is that molecule and where did it come from?
4. Why is bread light and fluffy?
5. Why do your muscles get sore after intense activity?
How does drug resistance among insects and bacteria offer evidence for evolution?
What fat measurement corresponds to low-fat ice cream?.
Which are examples of source and sink cells in a plant?.
Source is tissue, leaves and stem whereas sink are tubers and seeds.
Source and sink cells in a plant.In a plant cell, photosynthetic tissues, green leaves and green stems are the source where food is produce while on the other hand, germinating seeds, tubers are the sink where the food are stored so we can conclude that source is tissue, leaves and stem whereas sink are tubers and seeds.
Learn more about sink here: https://brainly.com/question/890547
The data table and the cladogram below provide information about the evolutionary history of several different species of animal. Using this information, which of the following is true of trout? Claws/Nails Feathers Jaws Lungs Mammary glands Bird X X X X Hagfish Lizard X X X Rabbit X X X X Salamander X X Tiger X X X X Trout X Image depicts a cladogram with hagfish, trout, salamander, lizard, bird, rabbit, and tiger represented. Trout diverge from hagfish with the introduction of jaws. Salamander diverges from trout with the introduction of lungs. Lizard diverges from salamander with the introduction of claws and nails. Bird diverges from lizard with the introduction of feathers. Rabbit and tiger diverge from lizard with the introduction of mammary glands. They are more closely related to salamanders than they are to birds. They are more evolved than salamanders and lizards. They evolved into a separate species due to the presence of lungs. They have jaws and lungs but lack claws or nails, feathers, and mammary glands.
Answer:
They are more closely related to tigers than they are to birds.
Explanation:
I just took the test.
The conclusion that can be drawn about trout from the diagram is :They are more closely related to salamanders than they are to birds. Birds claws, feathers, jaws and lungs. Trout has jaws only. Hence, they are entirely different from birds/
What are trouts ?Trout is kind of food fishes belonging to the family Salmonidae (order Salmoniformes) that are mostly restricted to freshwater, but certain species do migrate to the sea between spawning.
Trout typically inhabit chilly freshwater, frequently in riffles and deep pools, or amid submerged items. Like any other fishes, trout have jaws and they does not have lungs, claws or feathers. They respire through gills.
Higher animals like, rabbits, tigers, birds etc. consists of lungs and rabbits and tigers have Mamery glands. Salamanders does not have feathers or claws or like birds but has jaws and lungs. Hence, trouts are more alike to salamanders than birds.
Find more on trouts:
https://brainly.com/question/14122707
#SPJ7
The image related to your question is given below:
What inference can be made from the scientific discovery that life processes are shared by all organisms?
Innate behavior is programmed into the genetic code.
Natural selection is no longer the driving force of evolution.
Organisms alive today will not exist in thousands of years.
Species are linked by lines of descent or close relatives.
Answer:
species are linked by lines of descent or close relatives.
50 POINTS AND BRAINLIEST IF YOU GIVE CORRECT ANSWER.
A Colorblind male and a female that is h o m o z y g o u s for the normal allele have offspring. what percent of males would have normal vision, what percent of males would have c o l o r b l i n d n e s s, what percent of females would have normal vision, and what percent of females would have colorblindness?
Answer:
none of the males or females could be colorblind, assuming that this question is referring to x-linked recessive inheritance patterns.
Explanation:
if it is an x linked recessive trait, then the male's genotype is [tex]x^{b} y[/tex], with (b) representing colorblindness and (B) representing normal vision. the female, who is h o m o z y g ou s for normal vision, would have the genotype [tex]x^{B} x^{B}[/tex].
It would be impossible for the dad to pass on his colorblind gene to a son, because he can only pass a Y chromosome to the son. and a daughter would get the colorblind gene, but the normal gene donated by the mom would dominate it so the daughter could not actually be colorblind
Answer:
none of the males or females could be colorblind, assuming that this question is referring to x-linked recessive inheritance patterns.
Explanation:
if it is an x linked recessive trait, then the male's genotype is , with (b) representing colorblindness and (B) representing normal vision. the female, who is h o m o z y g ou s for normal vision, would have the genotype .
It would be impossible for the dad to pass on his colorblind gene to a son, because he can only pass a Y chromosome to the son. and a daughter would get the colorblind gene, but the normal gene donated by the mom would dominate it so the daughter could not actually be colorblind
Read the short excerpt below and answer the questions after. You will be doing math so please show your work.
During the hottest months of summer, ewes (females) and lambs come to waterholes almost daily. The male sheep (rams) sometimes do not come to water for nearly a week at a time. Rams may roam 20 miles (32 kilometers) away from the available water supply. Add 20 miles (32 kilometers) to the approximately 5 miles (8 kilometers) traveled per day, and rams may travel almost 75 miles (120 kilometers) before they drink again. Rams are believed to drink approximately 4 gallons (15.2 liters) of water when they do come to water, while a ewe drinks approximately 1 gallon (3.8 liters) and a lamb drinks 2 pints (940 milliliters).
Questions:
1. How many miles to the gallon or kilometers per liter (of water) does a ram get?
2. How many gallons (or liters) of water would a ram drink in a month?
3. How many gallons (or liters) of water would a ewe drink in a month?
4. How many gallons (or liters) of water would a lamb drink in a month?
5. How much water must be available in a waterhole for 10 rams, 16 ewes, and 7 lambs in order for them to survive the months of June, July, and August?
6. What rate of inflow would a waterfall have to have to sustain the population given above if water evaporated at a rate of 10 gallons (38 liters) per day?
Answer:
1) 20 miles
2) 4gallons (15.2 liters)
3) 1 gallons (3.8 liters
4) 2pints or 940 milliliters
5) 658.14 liters
Explanation:
Many years ago, a scientist grew pea plants that produced wrinkled peas. The peas from these plants produced new plants that also produced wrinkled peas. The scientist concluded that something in the parent plants was being transmitted to the next generation. This discovery is now known as.
Pepsin acts on proteins in the stomach. Explain how its optimum pH is suited to its working environment
Although bacteria and other single-celled organisms can produce genetically identical offspring. they sometimes still exchange DNA be passing it from bacteria to bacteria. What might be the advantage of exchanging DNA in this way?
p
Answer:
Bacteria, like all living organisms, have evolved at least one autonomous mechanism, conjugation, for exchanging portions of genetic materials between two related cells. The ecological benefits of conjugation include the expansion of metabolic versatility and resistance to hazardous environmental conditions.
Explanation: Hope this helps
What term describes the continuation of a visual sensation.
Answer:
Afterimage.
Explanation:
An afterimage describes the continuation of a visual sensation after removal of the stimulus. For example, when you stare briefly at the sun and then look away from it, you may still perceive a spot of light although the stimulus (the sun) has been removed.
Hope this helps! :)
List three ways RNA is different from DNA?
Answer:
RNA contains the sugar ribose
DNA contains the slightly different sugar deoxyribose (a type of ribose that lacks one oxygen atom
RNA has the nucleolus uracil while DNA contains thymine.
Explanation:
An air mass formed in Northern Canada moves into United States what type of air mass is this most likely to be in and what affect will have on the weather in the US
Answer : Radiational Cooling
Explanation: Continental polar (cP) or continental arctic (cA) air masses are cold, dry, and stable. These air masses originate over northern Canada and Alaska. They move southward, east of Rockies into the Plains, then eastward.