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Answer:
dkjde Boykin mulberry wjwke..
Which is the main function of the respiratory system?
1. to protect the internal organs
2. to help oxygen get into blood vessels
3. to push blood to all parts of the body
4. to protect the body from illness
describe how carbon dioxide is produced by respiring muscle cells reaches the alveolar cavitiesin mammalian lungs
Answer:
Hope this helps:
The carbon (iv) oxide which has been produced by the respiring muscle tissue is diffused into the bloodstream in the form of bicarbonates, a process facilitated by an enzyme called carbonic anhydrase. The carbon (iv) oxide is then carried to the lungs.
Explanation:
explain the regulation of glycogen phosphorylase by effectors
What is the name of the structures at the end of the bronchioles where gases are
exchanged?
Olarynx
Oalveoli
O trachea
Oepiglottis
Answer:
Alveoli
Explanation:
If glucose is metabolized under completely anaerobic conditions, pyruvate ( Please explain why each answer is wrong or right.)
a. immediately enters the Krebs cycle.
b. is converted by fermentation to lactate or CO2 and ethanol.
c. is converted back to fructose until the concentration of oxygen increases.
d. is converted to NADH.
Answer:
B.
Explanation:
A is wrong because pyruvate would enter the Krebs cycle under aerobic condition (when oxygen is present). Hence the name aerobic cellular respiration
C. I do not really too much about fructose or the concentration of oxygen, but I can assure that this answer choice is not correct.
D is wrong because NADH would be converted from NADP+. Either with oxidation or reduction, and this helps to keep this process going.
B is correct because fermentation is another word for anaerobic cellular respiration. The process takes place with the absence of oxygen. It either goes through Alcoholic or lactic acid fermentation.
I hope this helps!
which process is needed for evolution to occur? PLEASSE HELPPP THIS IS A BIG GRADE
Answer: D. Genetic mutation
Explanation:
For evolution to occur, there must be a genetic mutation in the genome of an organism such that a new allele is formed.
If this mutation occurred in the sperm and/or the ovum, the mutation will then be passed on through reproduction to the next generation. This leads to more of the subsequent generations having that mutation thereby leading to evolution.
Not all fat cells are equivalent. Humans and other animals contain both white fat cells and brown fat cells, named after their color. Because increases in brown fat cells may aid weight loss, researchers are interested in factors that control the ratio of white fat cells and brown fat cells, as detailed in a 2017 article in Obesity Reviews. What is the mechanism for how brown fat cells aid weight loss
Answer:
Brown fat cells are present in our body which helps in regulating the body weight. The main role of brown fat is to produce heat when the temperature of body is going down or when we are feeling cold. They burn energy in order to produce heat and burning energy comes from white fat which can be translated into weight loss. This is how the brown fat helps in weight management.
The brown fat is activated by cold temperatures and it helps our body fast our metabolism by providing heat by burning energy.
Which type of cell is most responsible for relaying information to the brain about external stimuli such as heat
Answer:
Sensory neurons, which pass information about stimuli such as light, heat or chemicals from both inside and outside your body to your central nervous system. Motor neurons, which pass instructions from your central nervous system to other parts of your body, such as muscles or glands.
question 10
Norepinephrine is produced from
A. tyrosine
B. serotonin
C. epinephrine
D. damfino
E. tryptophan
F. histidine
3. A branched diagram showing relationships between organisms is a/an– a. amino acid sequence. b. fossil record. c. cladogram. d. DNA sequence.
Answer: your answer would be B
Explanation:
A branched diagram showing relationships between organisms is a cladogram. The correct option is c.
What are the uses of cladogram?An evolutionary tree that depicts the relationships between species' ancestors is called a cladogram.
In the past, cladograms were created using similarities among species' phenotypic or physical characteristics. Today, cladograms can also be created using similarities among organisms' DNA sequences.
A cladogram employs lines that diverge and then converge at a clade, a collection of creatures with a recent common ancestor.
Cladograms come in a variety of shapes, but they all contain lines that diverge from other lines. It is possible to follow the lines back to where they split off.
Cladograms provide a framework for comprehending the rate of evolution of groupings of animals as well as the relationship between their evolutionary history and the planet's changing climate and geography.
Thus, the correct option is c.
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PLEASE LET ME KNOW IF U GOT THE ANSWER KEY TO THIS WORK SHEET
25 POINTS!!
THANK U
Answer:
The end rocky part of two continents has similar composition, the presence of similar fossils of animals and climate
Explanation:
Alfred Wegener find out the end rocky part of two continents has similar composition, the presence of similar fossils of animals and climate so he presented the theory of continental drift that occurs 200 millions years ago. The main reason for the rejection of Wegener's hypothesis because he provides no mechanism for the movement of the continents. Wegener thought that the force of Earth's spin was sufficient for the drifting of continents from each other but other scientists says that it is too weak to drift the continents.
In the liver, excess amino acids are broken down into ____________ and rapidly combine with ____________ to produce urea, which is much less toxic to cells.
Answer:
In the liver, excess amino acids are broken down into ammonia and rapidly combine with carbon dioxide to produce urea, which is much less toxic to cells.
Explanation:
The correct answer to the given quested about Urea Cycle is Ammonia and Carbon dioxide respectively and the complete statement will be "In the liver, excess amino acids are broken down into Ammonia and rapidly combine with Carbon Dioxide to produce urea, which is much less toxic to cells."
What do you mean by Urea Cycle?The urea cycle, commonly referred to as the ornithine cycle, is a series of metabolic processes that converts ammonia into urea (NH2)2CO (NH3).Highly poisonous ammonia is transformed into urea by rapidly combining with carbon dioxide via the urea cycle for elimination. Five years before the TCA cycle was found, this cycle was the first to be identified as a metabolic process. Later, Ratner and Cohen provided a more thorough explanation of this cycle.Thus we can conclude that in the liver, excess amino acids are broken down into Ammonia which is highly toxic to cells and that ammonia rapidly combine with Carbon Dioxide to produce urea, which is much less toxic to cells.
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Below is the ORIGINAL stretch of DNA, followed by DNA which has a MUTATION. Will this mutation likely have a bad consequence for the organism? Why?
Original: GCU ACC AGG
MUTATED: GCU ACT AGG
This mutation likely have a bad consequence for the organism - No, because the mutation will not code for a different amino acid.
Amino acid sequences are formed by the translation and transcription from DNA sequence to mRNA and finally amino acid sequences.
Differences in amino acids chains can lead to differences in a protein (in shape and function).the protein may not be functional if the amino acid sequence is changed.It could lead to positive, neutral, or negative changes.In the given case the change in mutated from the original is ACC to ACTBoth ACC to ACT codes for glutamic acid.Thus, this mutation will not change the amino acid so the answer will be No.
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Key Term Matching
1. accessory organs
2. fundus
3. uvula
4. villi
5. large intestine
6. root
7. dentin
8. lamina propria
9. fauces
10. chyme
11. incisor
12. parietal cells
13. crown
14. stomach
15. cheeks
16. serosa
17. enamel
18. stratified squamous
19. gingivae
20. small intestine
21. pharynx
22. liver
23. molar
24. mucins
25. acinar cells
a. forms bulk of tooth
b. performs compaction
c. a cutting tooth villi
d. liquid food mixture in stomach
e. posterior opening of oral cavity
f. has three muscularis externa layers
g. portion of tooth above gum line
h. epithelium found in esophagus
i. are connected to GI tract by a duct
j. composed of loose connective tissue
k. dome-shaped stomach region
l. organ shared with respiratory system
m. substance harder than bone
n. exocrine part of pancreas
o. projection off of soft palate
p. in saliva to lubricate food
q. finger-like extensions of mucosa
r. portion of tooth below gum line
s. the gums
t. performs 90% of digestion and absorption
u. secretes bile
v. a grinding tooth
w. secrete HCI
x. outermost layer of GI tract wall
y. lateral walls of the oral cavity
3. The presence of Malaria in many countries has been eradicated and even in parts of Africa, the incidence of Malaria has been reduced substantially. Without endemic malaria from Africa, the sickle cell mutation is purely disadvantageous. What do you think will happen to the percentage of people carrying the Sickle Cell gene over time under the pressures of natural selection
Answer:
The percentage of people carrying sickle cell gene increases.
Explanation:
People carrying the Sickle Cell gene have low chance of Malaria because the sickle cell enables the body to detoxify abnormal red blood cells from the body. When the malarial parasite attacks on the cells of the body, the molecular machinery for cleaning up the waste is already present in the body. Those places where malaria is common, the people having sickle cell because the sickle cell show resistance against malarial disease.
What are the possible genotypes for a tall plant
All the different populations living in the same habitat or ecosystem make up _____ A.biodiversity
B.ecosystem diversity
C.genetic diversity
D.species diversity
Answer:
D.species diversity
Explanation:
its D because biodiversity,includes to all the many plants, animals, fungi, and microorganisms. And includes the many variety of ecosystems what's found on Earth. Ecosystem diversity, describes all of the different type of habitats around the world.
Gamblers often make this mistake?
What evidence do the two organic molecule hypotheses provide regarding the formation of simple organic molecules?
The smaller a population of organisms of a particular species, the
A.
more likely one of the organisms is to adapt to a changing environment
B.
more likely a mutation is to arise
C.
less likely the species will be able to survive in a changing environment
D.
less likely natural selection is to affect the population
Answer:
The correct answer is - D. less likely natural selection is to affect the population
Explanation:
The larger population of a species tends to produce more mutant individuals per generation than a smaller population per generation. In a larger population, it assists to get more genotypes and gets optimal genotypes quicker than smaller populations.
In larger populations, the process of natural selection is more effective and for the smaller population Second, natural selection is less likely to affect the population which leads to less genetic diversity or change in order to survive due to stochastic sampling error as some allele loss in random selection.
What is the difference between shifting cultivation and land rotation?
In which season did the rabbit population increase the least
Answer:
Winter
Explanation:
Answer:
During the winter season
What part of the endocrine system does hypoglycaemia affect?
Human photosynthesis is highly unlikely , but if everyone on the planet could produce their own food through photosynthesis , we would expect carbon dioxide levels in the atmosphere to decrease . Think of and list two reasons human photosynthesis would reduce atmospheric carbon dioxide levels.
Please I need help?!!!!
Answer:
Human photosynthesis would reduce carbon dioxide levels because it would use the carbon dioxide already in the air and produce more oxygen
Explanation:
Photosynthesis uses Carbon dioxide and produces oxygen so some carbon dioxide would get used up and then the oxygen would suppress the carbon dioxide even more
CO2 + H20 + light energy --> C6H12O6 + O2
In the chemical reaction above, what does CoH12O6represent?
Answer:
In the chemical reaction , [tex]C_6H_1_2O_6[/tex] represent glucose.
Explanation:
This chemical reaction is used in the process of photosynthesis . A plant absorbs water, carbon dioxide, and light energy when producing glucose and oxygen during photosynthesis. Since glucose is required for cellular respiration, it is extremely essential. The chemical energy in the glucose molecule is transformed into a shape that the plant can use for growth and reproduction during cellular respiration.
Hence , the answer of the given question is Glucose.
*Question 23
Nerve impulses leading to the brain carry information about cool temperatures on the skin. The nerve fibers sending these signals will most likely belong to which division of the nervous system?
A) Somatic nervous system.
B) Parasympathetic division
C) Sympathetic division
D) Sensory (afferent) division
the answer is sensory (afferent) division
You are a botanist hired in the future to make a distant planet, Xyloph, habitable for human life. Your job is to help seed the planet with plant life by working with the terraforming team. All four major kinds of plants will be introduced into this new world. You are to help familiarize the terraforming team with the four different kinds of plants on earth. In three well developed paragraphs, describe each of the four major plant groups (seedless vascular, nonvascular, angiosperms, and gymnosperms). Your description should include, but not be limited to, the following: Description of general physical features and characteristics of each plant group. Discussion of living conditions where each plant group survives best. Explanation of specific abiotic conditions necessary for the success of that group, when applicable.
Answer:
A series of missions to the moons of Jupiter and Saturn has revealed their potential to harbour life. Nina Notman looks to the skies
After a series of mission failures, July 1965 saw the first successful flybys of Mars. The US Mariner 4 became the first spacecraft to take close up pictures of another planet, beaming 22 images of the impact-cratered Martian surface back to Earth. Since then, more than 20 successful missions have explored the red plant’s atmosphere and surface.
Thanks to the images and data collected– and by telescopes, both on earth and in space – we now know that billions of years ago, Mars had the three critical ingredients for life. It had an abundance of the chemical building blocks, liquid water on its surface and an energy source (volcanic activity) to power the chemical reactions that make life possible (on Earth that energy source is the sun). Today, the inhospitable surface of Mars is thought to be unsuitable for life, but the possibility of life existing deep beneath its frozen surface hasn’t been ruled out. To date though, no evidence of life – ancient or otherwise – has been found. Mars being habitable, it turns out, doesn’t mean it actually has a habitat.
Source: NASA/JPL-Caltech/MSSS
Mars has all the ingredients for life – water, chemicals and energy – but no signs of living things yet
The search for Martian life is ongoing, with a further three missions to Mars planned to launch over the next few years. Longer-term, a number of space agencies are also aiming to collect samples from Mars and return them to Earth for more in-depth analysis. And the search for signs of extraterrestrial life is stretching to the depths of our solar system and beyond.
2. Which of the following is indicated by the pH
value of a solution?
A. its hydrogen ion concentration
B. its ammonium ion concentration
C. its ability to undergo a chemical reaction
D. ils ratio of solute amount to solvent volume
Answer:
Option A
Explanation:
The pH of a solution is determined by the following formula
pH = -log [H+]
Here H+ is the hydrogen ion concentration
Thus, if pH is known one can determine the hydrogen ion concentration by taking its antilog.
Hence, option A is correct
PLEASE HELP !! ILL GIVE 40 POINTS ; PLUS BRAINLIEST !! DONT SKIP ANSWER.
Answer:A
Explanation:
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