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Related Questions
______ are a dense source of energy (9 kcal/g) and serve as important regulators of the growth and development of the infant's nervous system.
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The blank field in the task content should be filled with lipids.
What are Lipids?Nutritionally, lipids are a class for nutrients characterized by the ability to serve as dense source of energy and hence serve as important regulators of growth.
Although, carbohydrates also serve as energy sources in diets, lipids have high energy density.
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A student is examining leaf cells. Which organelles are most likely to be missing from the cells?
ribosomes
chloroplasts
lysosomes
mitochondria
Answers
Answer:
lysosomes
Explanation:
lysosomes are most likely to be missing from the cells.
Chloroplasts are most likely to be missing from the cells. Therefore option B is correct.
Leaf cells, being part of the plant tissue specialized for photosynthesis, contain chloroplasts, which are the organelles responsible for photosynthesis.
Chloroplasts contain chlorophyll, a pigment that captures light energy and converts it into chemical energy through photosynthesis.
In contrast, the other organelles listed in the options (ribosomes, lysosomes, and mitochondria) are more likely to be present in leaf cells.
Ribosomes are essential organelles involved in protein synthesis, and they can be found in almost all types of cells, including leaf cells. They play a vital role in translating genetic information from the nucleus into functional proteins.
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How does dna replication differ between eukaryotes and prokaryotes.
Answers
Answer:
Explanation: they differ because they are different organelles
In humans, one allele of the APOE gene, called APOE-c2, can result in a high tolerance of cholesterol Cholesterol is a vital substance for humans but may lead to heart disease in an older adult with a history of high cholesterol diets. High cholesterol diets are becoming more prevalent in the United States. Currently only about 2% of humans carry the APOE-12 allele Which of the following states a valid null hypothesis about the future distribution of APOE alleles in future generations in the United States? i. The APOE 2 ailele was the result of chance mutations so it is not possible to predict now its frequency will change in the future ii. As high cholesterol diets become more common in the United States, individuals with the APOE-42 allele will have a better survival rate from heart disease than those without the allele, so the allele will increase in frequency iii. The low frequency of the APOE-42 allele indicates it is probably a recessive allele, so it will become less frequent as the dominant allele becomes more frequent iv. The variant protects an individual from a condition that is only common among humans beyond reproductive age, so the frequency of the allele will likely not change much in the future because it is not influenced by natural selection
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As high cholesterol diets become more common, individuals with the APOE-42 allele will have a better survival rate, so the allele will increase in frequency.
What is natural selection?Natural selection is the main evolutionary force by which evolution (change) occurs over time.
An adaptive allele is a given gene variant that confers an evolutionary advantage to the individual.
In this case, the APOE-42 allele confers an evolutionary advantage and therefore it will increase its frequency in the population.
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What is the first step in the immediate aftermath of an exposure to a biohazard involving a percutaneous injury (through the skin)
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The first step after exposure to a biohazard is too thoroughly wash the affected region with soap and water.
What is a biohazard?A biohazard is a possibly infectious agent that may cause severe harm to the organism is affects. Biohazard protocols are very strict due to the likelihood that their infection rates are often very high and are paired with severe symptoms. The first step of exposed through a cut or other method involving the skin is to wash it thoroughly with soap and water and seek medical attention.
Therefore, we can confirm that the first step after exposure to a biohazard is too thoroughly wash the affected region with soap and water.
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Which of the following traits is only found in vertebrates? question 5 options: a highly developed nervous system and internal skeleton a major function to obtain food and oxygen for energy multi-cellular bodies internal conditions are kept in balance
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A highly developed nervous system and internal skeleton are traits found in vertebrates.
What is a Vertebrate?These are organisms which have the presence of a backbone which connects other bones to form the skeleton.
They also have highly developed nervous system due to the presence of spinal cord which is rich is nerve cells.
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Plssssss plsss guys help
Explain how our solar system formed and evolved. also use the terms nebula, planetesimal, protoplanet, gravity.
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I love this question!(mainly because it is about astronomy lol)
Our solar system formed from a cloud of gas and dust, called a nebula. there are many satellites orbiting our Sun, but there are eight considered to be the main planetesimals that make up our solar system. A protoplanet is a hypothetical eddy in a whirling cloud of gas and dust that later becomes a planet. The asteroids Ceres, Pallas, and Vesta are believed to be protoplanets. Gravity keeps objects like moons and asteroids close to planets. This is called a gravitational pull.
What caused these layers of rock to deform?
Answers
Answer:
tectonic forces
Explanation:
Rocks that were originally deposited in horizontal layers can subsequently deform by tectonic forces into folds and faults. Folds constitute the twists and bends in rocks. Faults are planes of detachment resulting when rocks on either side of the displacement slip past one another.
In earthworms, what do the nerve cord, the setae, the circular muscles, and the metanephridia have in common?.
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They are serially repeated in the segments of the body. has programmed cell death and therefore is useful in cancer and AIDS research.
What does the countercurrent mechanism accomplish in the nephron loop?.
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Answer:
The counter-current multiplier or the countercurrent mechanism is used to concentrate urine in the kidneys by the nephrons of the human excretory system. The nephrons involved in the formation of concentrated urine extend all the way from the cortex of the kidney to the medulla and are accompanied by vasa recta.
What do biologists call a virus
that infects bacteria?
A
DNA
B
a bacteriophage
Answers
Answer:
Bacteriophage
Explanation:
An island frog population is made up of two color phenotypes, green and brown, caused by different coloration alleles.The frequency of coloration alleles is shown in the Original Population box in the diagram.Because of changes in the environment, green frogs become more visible to predators and brown frogs are better camouflaged.
Part A
How many green and brown colored symbols should go into the New Population box to predict the frequency of frog coloration alleles due to the changes in the environment.
Part B
Select the evolutionary mechanism that would cause this change in allele frequency.
There may be more than one correct answer.
A
Founder effect
B
Natural selection
C
S3xual selection
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In this case, brown frogs increase and green frogs decrease, whereas natural selection would cause this change in allele frequency.
What is natural selection?Natural selection is the main evolutionary force by which populations change (evolve) across time.
Natural selection leads to the change in the allele frequencies depending on the more adapted phenotypes in a given environment.
In conclusion, brown frogs increase and green frogs decrease, whereas Natural selection would cause this change in allele frequency.
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Is there a difference between cell division and reproduction?
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Answer:
yes!
Explanation:
How does a forensic scientist estimate the height of a victim?
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Explanation:
They took all the body samples given to them by policeThey then look out for DNAAfter deriving the DNA they can find the length of their leg bones or spine bones and vertebrae.By which they can find the height
In one or two sentences, describe how an invasive species can be introduced into an ecosystem by humans. Name a specific situation and species and how it would affect the ecosystem. Help
Answers
Answer:
Invasive species are among the leading threats to native wildlife. Approximately 42 percent of threatened or endangered species are at risk due to invasive species.
ANSWER ASAP: In a population of 500 squirrels, the per capita birth rate in a particular period is 0.08and the per capita death rate is 0.12.
a.What is the per capita growth rate of the population? Round to the nearest hundredth. b.What is the actual number of squirrels that die during this particular period? Round to the nearest whole number.
c.What is the actual number of squirrels that are born during this period? Round to the nearest whole number.
Answers
Answer:
A. -0.04
B.40
C. 60
Explanation:
.08-.12 =-.04
.08*500=40
,12*500 = 60
An earthworm lives and reproduces in the soil.co
Through its feeding, excretion, and tunneling
activities, the worm adds nutrients and allows
air to enter the soil. Together, these statements
describe the earthworm's
(3) niche
(1) habitat
(2) nutrition
(4) environment
Answers
Answer:
niche
Explanation:
a habitat is a place where an organism lives in an environment
a niche is the organisms role in that environment
nutrition is the process of obtaining food for energy
environment is the surrounding of the organism
If the Third Quarter Moon is on March 9, when would the next First Quarter Moon be?
Answers
Explanation:
The First Quarter happens around day 7 of a Moon's cycle (one week after the New Moon) and the Third Quarter usually happens around day 22
So from this add 22 in the actual date to get answer
Which is 31 march
PLEASE MARK ME BRAINLIEST IF MY ANSWER IS CORRECT PLEASE
The First Quarter happens around day 7 of a Moon's cycle (one week after the New Moon) and the third quarter usually happens around day 22.So from this add 22 in the actual date and on 31st march there would the next First Quarter Moon.
What is lunar phase of moon?Lunar phase is the phase of moon which is viewed from the earth, the lunar phase is also known as moon phase is a shape of moon's directly sunlit portion and it can be expressed quantitatively.The current moon phase for today is the new moon phase.
The moon is known as earth's only natural satellite and combinedly with earth it forms the earth-moon satellite system.
The size of moon is one quarter of earth in diameter. It is fifth largest satellite in the solar system. The distance of moon from earth is 384,400km. The radius of moon is 1,737,4 km. The gravity of moon is 1.62 m/sec^2.
The total surface area of moon is 3.793×10^7 km square and it's surface pressure is 10^-7 Pascal. There are total 8 phase of moon and these are new moon, first quarter, waxing gibbous, third quarter and waning crescent.
Therefore,The First Quarter happens around day 7 of a Moon's cycle (one week after the New Moon) and the third quarter usually happens around day 22.So from this add 22 in the actual date and on 31st march there would the next First Quarter Moon.
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What is pH?
A. the temperature
of the solution
B. the amount of
water in a solution
C. the intensity with
which a solution can
burn you
D. the
concentration of
hydrogen ions in a
solution
Answers
Answer:
D
Explanation:
examine figure 1. below. For each numbered location, identify which part of photosynthesis it represents, then describe how each part enters or exits the plant. (PLS IM IN DESPERATE NEED OFHELP)
Answers
Chloroplasts contain chlorophyll, which is used to absorb light energy and convert it into chemical energy.
What is chlorophyll?Chlorophyll is a pigment found in plants and algae that is essential for photosynthesis, the process by which light energy is converted into chemical energy. It is composed of a porphyrin ring and a magnesium ion, which gives it its green color. Chlorophyll absorbs light in the blue and red wavelengths, reflecting green light and giving plants and algae their green color.
As light enters the chloroplasts, it is used to convert carbon dioxide and water into sugars and oxygen.
On the leaf surface there are tiny holes called stomata. These openings allow carbon dioxide to enter the plant, and oxygen and water vapor to exit the plant. Carbon dioxide is the primary reactant in photosynthesis and is needed in order for the process to occur.
The phloem is a tissue in the plant that transports sugars produced during photosynthesis from the leaves to other parts of the plant. These sugars are used as energy by the plant for growth and development.
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Which component of the urinary system is also associated with the male reproductive system?
Answers
Answer:
The urethra is the component
yellow stone national park is an example of
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A bacterium is unable to transport lactose into the cell to be broken down. Which gene is likely mutated in this bacterium
Answers
Answer:
lacY is the awnser
Explanation:
What is the meaning of Climax Community?
Answers
Answer:
An ecological community in which populations of plants or animals remain stable and exist in balance with each other and their environment. A climax community is the final stage of succession, remaining relatively unchanged until destroyed by an event such as fire or human interference.
Explanation:
hope this helps
Answer:
climax community is a historic term for a community of plants, animals, and fungi which, through the process of ecological succession in the development of vegetation in an area over time, have reached a steady state.
The forelimbs of humans, cats, and bats have a number of detailed similarities in their construction. What best explains these similarities?.
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What are the adaptations of bottle-nosed dolphins that allows them to thrive in the marine biome?.
Answers
Answer:
Thermoregulation
Explanation:
Decreased surface-to-volume ratio. The dolphin's fusiform body shape and reduced limb size decrease the amount of surface area exposed to the external environment.Increased insulation. Dolphins deposit most of their body fat into a thick layer of blubber.Heat exchange system.Suppose humans accidentally introduced a non-native species to a can of warriors bird to the region if these birds feeder schools will be on large fish which group or groups of organisms will be negatively impacted by the change
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If earth's axis was straight, like that of Mercury, do you think earth would have any seasons?
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Well, if Earth's axis were straight, then it would be orbiting the sun with a straight axis.
. . . every location on Earth would have about a 12 hour sunlight days and the noon sun angle would be about the same every day. There would no longer be season as we know them. The temperature and precipitation pattern would not vary much.
- The Weather Prediction
White blood cells are an important part of the human immune response. Two types of white
blood cells, neutrophils and macrophages, act as phagocytes. Phagocytes perform which of
Che following functions in the human body?
1 Point)
A. They produce antibodies.
B. They bind to antigens and develop into plasma cells.
C. They form a barrier against pathogens.
D. They engulf and destroy bacteria.
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Answer:
D. They engulf and destory bacteria.
Explanation:
"Phagocytes are a type of white blood cell that use phagocytosis to engulf bacteria, foreign particles, and dying cells to protect the body."
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The cladogram above diagrams the evolutionary history of chordates. Which structural adaptation led to greater motion and a more diverse diet?
A) lungs B) true bone C) vertebrate D) jaws and paired appendages
Answers
Answer:
D) Jaws and paired appendages
Explanation: