If you wanted to observe a living organism-an amoeba, for example-which type of microscope would you use?
A. electron microscope
B. light microscope
C. either one
D. niether one
Answer:
compound light microscope
Explanation:
an amoeba is a microscopic unicellular protist
a)what are the difference between two species of minnows?
Animals are often individually consistent in their behavior, not only over time, but also across different functional contexts. Recent research has focused on phenotypic and evolutionary mechanisms explaining such personality differences through selection. Parasitism and predation induce important mortality and fitness costs, and are thus main candidates to create and maintain personality differences in the wild. Here, we present data on the behavioral consistency of the Eurasian minnow (Phoxinus phoxinus) from two populations that live in different tributaries of the same river, but whose ecological environment differs fundamentally with regard to predation and parasitism. We experimentally demonstrate that individual minnow in both study populations are consistent in their boldness and activity. However, the two study populations differ notably: in the high predation and parasitism risk population fish show higher mean boldness, but tend to be less active than fish in low predation and parasitism risk population. Parasite (Diplostomum phoxini) load was negatively, but not statistically significantly, associated with fish activity level. Our study suggests that parasitism and predation are likely important agents in the ecology and evolution of animal personalities.
helppp plzzzz
what is the relationship between atmospheric pressure and the density of gas particles in an area of decreasing pressure?
A. as air pressure in an area decreases, the density of the gas particles in the area increases and decreases in an alternating pattern.
B. as air pressure in an area decreases the density of the gas particles in the area increase.
C. as air pressure in an area decreases, the density of the gas particles in that area remains constant.
D. as air pressure in an area decreases the density of the gas particles in that area decrease.
Answer:
As air pressure in an area increases, the density of the gas particles in that area increases.
Explanation:
What do biogeochemical cycles represent?
The biogeochemical cycle of water, or the hydrological cycle describes the way that water (Hydrogen Dioxide or H 2 O) is circulated and recycled throughout Earth’s systems. All living organisms, without exception, need water to survive and grow, making it one of the most important substances on Earth.
hope that helps
Biogeochemical cycles represent the main system where the energy of the Sun is converted into the energy of chemical compounds by living beings and the products of their activity.
What is Biogeochemical cycle?A biogeochemical cycle is defined as the path by which a chemical substance cycles through the biotic and abiotic compartments of the Earth where the biotic factor is the biosphere and the abiotic factors are the atmosphere, hydrosphere and lithosphere.
Nutrients cycle occur through organic components as well as abiotic components. In biosphere the term bio refers to biotic components while 'geo' refers to abiotic components. Therefore, nutrient cycles in nature are called biogeochemical cycles.
Thus, Biogeochemical cycles represent the main system where the energy of the Sun is converted into the energy of chemical compounds by living beings and the products of their activity.
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Mrs. Gupta is the Cub Scout den mother. She is taking a troop of boys on a camp out and believes it will be easier if she schedules the outing to happen during the full moon. Last night she observed a third quarter moon. Approximately how many days will she have to wait before the full moon? 7 14 21 28
Answer:
The correct option is 21
Explanation:
First of all, it should be noted that the full moon is usually observed in the middle of the lunar month, which is usually 29 or 30 days, hence the full moon can be observed either on the 13th but most likely on the 14th and/or the 15th of the lunar month.
At the early days of the month, the new moon begins to form a crescent which appears and continues to get fuller (called waxing crescent) as the day goes by until half of the moon is noticed (usually after about seven days) on one side, this is known as the first quarter.
After half of the moon is noticed on one side, the moon continues to get fuller (called gibbous moon) until a full moon is noticed on the 14th/15th day. This full moon then starts waning or becoming smaller until the other half of the moon becomes visible while the initially seen half becomes invisible/clouded (this is called third quarter). This happens after another 7 days or on the 21st day. This half moon continues to get smaller (forming a waning crescent) until no moon is seen at the end of the month (around the 28 or 29th day) which is referred to the new moon.
Hence, we can see from the above that from the third quarter to a new full moon will go through the steps below
third quarter ⇒ new moon ⇒ first quarter ⇒ full moon
If each step takes about 7 days and there are 3 steps, the approximate number of days she has to wait before the full moon is 21 days.
what blood types are not. possible for a child if one parent has type.A blood and the other type B?
A.Type B
B.Type A
C.Type O
d. all blood types are possible
(Environmental) Southern England What are the major concerns about soil erosion on arable land in Britain?
Answer:
Soil nutrient loss
Algae blooms
Pollution of water ways
Explanation:
Soil nutrient loss - a major concern as when soil erodes, this results in nutrient run off. Heavy rains can "wash away" essential nutrients within the soil therefore reducing the fertility of the land.
Algae blooms - when nutrients run off soil as a result of soil erosion they can leech into nearby fresh stream and even into salt water marine environments. This large increase of nutrients results in algae thriving and forming a layer across the top of the water. This reduces the oxygen and sunlight available to other marine plants and essentially suffocates plant and animal species.
Pollution of water ways - The sediment of soil that is eroded makes its way into fresh water ways can not only "bury" plant species and reduce biodiversity but it also reduces the water quality. It can introduce pathogens to the water from liverstock farming as well as introducing pesticides that may be harmful to wildlife.
Which statement is true about oxygen and nutrient levels of rivers? TIMED TEST
Your answer:
Fast moving mountain streams which flow over rocks and waterfalls are high in oxygen due to the amount of surface area of the water that is exposed to the air.
Fast moving mountain streams are high in nutrients. Organisms have adaptations to hold on in fast moving water, resulting in a large diversity organism.
Slow moving flood plain rivers are high in oxygen due to the amount of surface area of the water that is exposed to the air.
Slow moving flood plain rivers are low in nutrients. These rivers move too slow for plant growth and other organisms to survive.
Answer:
fast moving mountain streams which flow over rocks and waterfalls are high in oxygen due to the amount of surface area of the water that is exposed to the air.
Fast moving mountain streams are high in nutrients. Organisms have adaptations to hold on in fast moving water, resulting in a large diversity organism.
Slow moving flood plain rivers are high in oxygen due to the amount of surface area of the water that is exposed to the air.
Slow moving flood plain rivers are low in nutrients. These rivers move too slow for plant growth and other organisms to survive.
what is it called when energy is required to move materials through a cell membrane ?
Answer:active transport
During active transport, ATP is required to move a substance across a membrane, often with the help of protein carriers, and usually against its concentration gradient. One of the most common types of active transport involves proteins that serve as pumps.
Explain how xylem cells are adapted for their function.
Answer:
Xylem cells have no cytoplasm or end walls, meaning they form a tube through which water can pass freely to allow water transport. Lignin strengthens the cell walls, helping to support the plant.
1. Inferring This activity incorporates information from Chapters 12
and 13. How are these two chapters related?
what structure do plant have for making food that animals do not
Explanation:
Animal cells each have a centrosome and lysosomes, whereas plant cells do not. Plant cells have a cell wall, chloroplasts and other specialized plastids, and a large central vacuole, whereas animal cells do not
Identify the structures in the eukaryotic cell pictured on the right. Label A Label B Label C Label D Label E
Which of the following shows the correct genotypes of purebred individuals?
BB, bb, Bb
TT, Tt, Tt
Ss, Ss, ss
bb, BB, bb
what is bees called?
Where in the animal cell food is converted into energy?
Answer:
The mitochondria
Explanation:
It is the power house of the cell
What is a phenotype???
Answer:
the set of observable characteristics of an individual resulting from the interaction of its genotype with the environment.
A genotype is the genetic constitution of an individual organism.
Explanation:
Which of the following statements about symbiotic relationships is true?
In mutualism, neither organism benefits.
At least one organism benefits from commensalism.
In parasitism, both organisms are harmed.
Both organisms benefit from commensalism.
Answer:
At least one organism benefits from commensalism.
Explanation:
The symbiotic relationship of commensalism is when one organism benefits and the other organism receives neither benefit nor harm.
So, this statement is true, because at least one organism has to benefit from the relationship, while the other will not be harmed or helped.
Which matches the cellular structure with its function in the human body?
Answer:
Which of the following pairs correctly matches a cellular organelle with its function?
TEAS TEST 6
Question Answer
Which of the following pairs correctly matches a cellular organelle with its function? Cytoskeleton movement
Which of the following describes an anatomical relationship between two structures in the human body? The ribs are lateral to the sternum
Explanation:
CFU Question 1:
What is the relationship between the structure
and enzymatic function?
Answer:
Most enzymes are proteins and therefore their function is specific to their structure. Enzymes function as a catalyst to increase the rate of virtually all the chemical reactions that take place in a living system.
Explanation:
hi… what is zoospor?
Answer:
from google HAHA, just searched it there
Which best describes a neutralization reaction? areaction between an acid and a base Oareaction between two acids O a reaction between a base and a salt Oa reaction between two salts
The statement best describes a neutralization reaction is a reaction between an acid and a base. The correct option is a.
What is neutralization?Neutralization is the reaction that occurs when acids and bases of equal strength react to generate salt and water. Because acid and bases cancel each other out, the salt generated in the reaction is neutral.
Neutralization is the reaction of an acid and a base that causes the pH to rise to 7. It is a useful process that occurs in everyday life, such as the treatment of acid indigestion and the addition of lime to acidic soil. Neutralization lowers the pH of alkali to around seven.
Taking a base helps to neutralize excess acid in our stomach. Because formic acid is present in the ant sting, it can be painful. Using moist baking soda, which is basic in nature, we can neutralize the acid action and reduce the discomfort caused by the sting.
Therefore, the correct option is a, action between an acid and a base.
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Answer:
the correct option is A, action between an acid and a base.Explanation:
30 living things name
Answer:
Here is a list of living things:
HumansGorillasApesMonkeysGiraffesPigsHedgehogsCowsHorsesSheepGoatLambDuckHummingbirdOstrichCockroachCicadaCentipedeKatydidElephantTapirRhinocerosHippopotamusTigerSquirrelSilverfishOctopusSharkWhaleDolphinHope this helps!
Animals:dogs,cats,tigers,sharks,human beings,cows,lions,rabbits,fish,eagles
Plants:mangoes, apples,oranges,bananas,grapes,coconut,lime,peach,pear,
Birds:owl,dove,goose,turkey,raven,parrot,ostrich,hawk,eagle,pigeon,robin
During the light dependent reactions of photosynthesis which is not produced
A.Oxygen
B.ATP
C.NADPH
D. Glucose
*hurryyyyyyy*
Answer:
D. Glucose
Explanation:
Which occurs during both DNA replication and protein production?
RNA leaves the nucleus.
DNA leaves the nucleus.
RNA unzips.
DNA unzips.
Answer: RNA leaves the nucleus
Explanation: I did the assigment and got it right
1. RNA leaves the nucleus during both DNA replication and protein production.
What is DNA replication?
"DNA replication is the process by which the genome's DNA is copied in cells. Before a cell divides, it must first copy (or replicate) its entire genome so that each resulting daughter cell ends up with its own complete genome."
What are the main steps involved in DNA replication?
The main steps involved in DNA replication are as follows:
Replication Fork Formation.Primer Binding.Elongation.Termination.What is protein production?
"Protein production is the process in which cells make proteins. It occurs in two stages: transcription and translation. Transcription is the transfer of genetic instructions in DNA to mRNA in the nucleus."
What are the main steps of protein production?
Protein production includes three steps:
Initiation. Elongation. Termination.To know more about DNA replication and Protein Production here https://brainly.com/question/13543444
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When stomata are closed during hot weather, Oxygen combines with RuBP and a wasteful process occurs, known as:
a. photo phosphorylation
b. photo transpiration
c. photochemical
d. photorespiration
Answer:
Photorespiration
Explanation:
Which statement best accounts for the decline in bighorn sheep populations? 1. Predators of the sheep decreased in number. 2. Sheep ewes that have shorter, spiked horns increased in number. 3. Human activities directly and indirectly affected the sheep. 4. The sheep were listed as a "species of concern" by Glacier National Park.
Answer:
The statement which best accounts for the decline of the bighorn sheep population is - " Human activities directly and indirectly affected the sheep."
Explanation: Explaination of the following statements -
Predators of the sheep decreased in number.Predation is rarely considered a major mortality factor (Wishart 1975, 1978). It is well known that bighorn sheep are preyed upon, but there is little information available on the effect(s) of predation on the populations of bighorn sheep. Numerous citations document the stalking and/or killing of bighorn sheep by a number of predators.
Thus , this statement is not correct.
Sheep ewes that have shorter, spiked horns increased in number -The larger, wild relative of the domesticated sheep is the bighorn sheep. Males are called "rams" and have long spiral horns, while females are called "ewes" with shorter, spike-like horns. With white areas on the muzzle, the back of the legs and around the rump, the coat is short, coarse and usually brown. The sheep will shed its hair once a year to reveal a new coat underneath.Thus , the statement does not match with the decline of the bighorn sheep.
Human activities directly and indirectly affected the sheep. -: Disease transmission, human interference, overgrazing, and loss of habitat are often cited as factors responsible for decreases in the abundance and distribution of bighorn sheep. these all factors comes under the human activities which directly /indirectly results in the declination of the bighorn sheep.Hence, this statement is correct .
The sheep were listed as a "species of concern" by Glacier National Park.Home to 400 to 600 bighorn sheep, Glacier National Park lists the animal as a "species of concern," that is, at risk of being endangered. The research has also shown just how sheep-like bighorns could be. They're creatures of habit, that is. Therefore , the national park indicated the species at risk , but were not responsible for their declination.
Hence, this statement is incorrect.
Therefore , the correct answer is 3 ( Human activities directly and indirectly affected the sheep.)
A nursing infant is able to obtain disease fighting antibodies, which are LARGE MOLECULES, from its mother's milk. These molecules probably ENTER the cells lining through the baby's digestive track via… * 2 points a. Osmosis b. Diffusion c. Endocytosis d. Exocytosis
Answer:
The correct answer is - option C. endocytosis.
Explanation:
Endocytosis is the transfer process of large molecules from the outside of the cells by internalizing them or engulfing them in vesicles, it is possible by invagination of the surface of the cell to form vesicles.
In an infant, the antibodies like large molecules from the mother to the baby are transferred through the Mother's milk which is entered in the baby's digestive tract via Endocytosis
Deep-oceanic trenches are formed a subduction
Zones
at)
plate boundaries.
Divergent
Convergent
Transform
Pacific
Answer:
Convergent
Explanation:
In particular, ocean trenches are a feature of convergent plate boundaries, where two or more tectonic plates meet. At many convergent plate boundaries, dense lithosphere melts or slides beneath less-dense lithosphere in a process called subduction, creating a trench.
Answer:
Im pretty sure its convergent!
Explanation:
How does the statement Archaea have ribosomes, similar to eukaryotes support the theory presented in the article
Answer:
Since archaea are some of the oldest forms of life on Earth, the similarities suggest that some structures in eukaryotic cells, such as ribosomes, partially evolved from archaea
Explanation: