Community ecologists study the factors that determine the abundance of different species. The Abundance of three algae species (in mg/mL) is quantified in two different lakes before and after an unusually hot summer. The coordinates of these four samples inR3are (i) Lake A: (97,84,43)and (100,80,50) before and after summer, respectively, and (ii) Lake B: (23,59,22) and (20,63,15)before and after summer, respectively.(a) How does the magnitude of the change in algal community compare between the two lakes
Answer:
Explanation:
Given that:
The abundance of three algal species in Lake A is now represented by the vectors:
[97, 84, 43] and [100, 80, 50]
Now if we look at Lake A, the change occurring in the vector of algae species can be determined as:
a = [100 -97, 80 - 84. 50 - 43]
a = [3, -4, 7]
Thus, the magnitude of that change is:
[tex]|a| = \sqrt{(3)^2 +(-4)^2+(7)^2}[/tex]
[tex]|a| = \sqrt{9+16+49}[/tex]
[tex]|a| = \sqrt{74}[/tex]
[tex]|a| =8.6 \ mg/mL[/tex]
The abundance of three algal species in Lake B is now represented by the vectors:
[25, 59, 22] and [20, 63, 15]
At Lake B, the change occurring in the vector of algae species can be determined as:
b = [20 -23, 63 - 59. 15 - 22]
b = [-3, -4, -7]
Thus, the magnitude of that change is:
[tex]|b| = \sqrt{(-3)^2 +(4)^2+(-7)^2}[/tex]
[tex]|b| = \sqrt{9+16+49}[/tex]
[tex]|b| = \sqrt{74}[/tex]
[tex]|b| =8.6 \ mg/mL[/tex]
Hence, for both Lake A and B, the magnitude of change is the same.
Identify the organelle that packages and secretes proteins and membrane parts
A. Nucleus
B. Mitochondria
C. Golgi Apparatus
D. Cell Membrane
Which statement is true? (1 point)
O Fossils cannot provide information about relatedness of life forms.
O Fossils can provide information about when life forms existed.
O Fossils cannot provide information about life cycles and behaviors.
O Fossils can provide information about the entire evolutionary process of life forms.
Please help! I will give you Brainly !
Answer:
1. fossils can provide information about when life forms existed
2.3
3.they can show false relationships between organisms that are not reflected in the DNA
4.Living things have adapted and changed over time for specific, discoverable reasons
5.This suggests that all of these species share a common ancestor
Explanation:
Fossils give us information about how animals and plants lived in the past.
Fossils can provide information about when life forms existed.
Fossils can provide information about the entire evolutionary process of life forms.
What are Fossils?Fossil of an animal or plant has been preserved in Earth’s crust. It is the primary source of information about the history of life on Earth.Fossils are the undecayed remains of the living organisms. These remain preserved inside the lining of sediments.Thus, we can conclude that the correct options are A and D.
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5. What do Chloroplast and Mitochondria have in common?
A. They contain DNA
B. Provide energy to the cell
C. Are in charge in cell transport
D. Make proteins
Answer:
B. Provide energy to the cellExplanation:
Both the chloroplast and the mitochondrion are organelles found in the cells of plants, but only mitochondria are found in animal cells.
The function of chloroplasts and mitochondria is to generate energy for the cells in which they live.
The structure of both organelle types includes an inner and an outer membrane
PLS HELP
During which phase of meiosis does crossing over occur?
A. Interphase
B. Prophase 1
C. Metaphase 1
D. Anaphase 1
E. Telophase 1
Answer:
prophase 1
Explanation:
the complex that temporaily forms between homologous chromosomes is only present in prophase 1, making this the only opportunity the cell has to move dna segments between the homologous pair.
Describe how an unsaturated triglyceride is synthesised.
Answer:
Explanation:
Triacylglycerols are formed by linking fatty acids with an ester linkage to three alcohol groups in glycerol. Triacylglycerols are the form in which fat energy is stored in adipose tissue. Triacylglycerols are sometimes referred to as triglycerides.
Anything that causes disease is called a
O virus
O protist
O pathogen
O gene
An opportunistic predator switches prey, capturing whichever prey species is most abundant. As soon as the prey numbers dwindle and another species becomes more abundant, the predator will consume the more abundant species. In doing so, this predator maintains great biodiversity in the community. This type of predator is called a
Answer:
The correct answer is keystone predator.
Explanation:
In sustaining the composition of an ecological community, a keystone species plays an essential function. In the absence of keystone species, the ecosystem would fail to exist and would become drastically different. A predator is a classic illustration of a predator, which inhibits a specific herbivorous species from eradicating the dominant species of plants. In the non-existence of predators, the herbivorous prey would increase enormously and would clean the entire essential plant species, and thus, drastically change the significance of the ecosystem.
Computer simulations are __________ ?
1) Dry lab
2) In-silico
3) In-vitro
4) Wet lab
Answer:
2) In-silico
Explanation:
Hope it helps!
A ____ farm can be used to generate electricity. a. sheep c. wind b. wheat d. fish
Answer:
The answer is pretty much C. wind
Which endorcrine gland is indicated by the arrow?
sorry by mistake
pls delete my answer
22. Which of these conditions would most likely be shown in the fossil record as a
reason for mass extinctions?
Answer:increased competition for resources
Explanation:
Why consist of a cell body that contains the 
Answer:
The cell body, also called the soma, is the spherical part of the neuron that contains the nucleus. The cell body connects to the dendrites, which bring information to the neuron, and the axon, which sends information to other neuron
Explanation:
Mark brainliest pls
During which month does Albuquerque experience the highest temperatures? The lowest?
Answer:
July and January
Explanation:
In January the average temperature overnight is 23.8°F.
In July the average day time temperature rises to 92.3°F.
Both microscopy and motility agar are used to confirm microbial mobility. Research techniques involving microscopic determination of mobility and explain why both microscopy and motility agar are required to determine motility in some microbes.
Answer:
One allows microbe to move in the medium and the other allows to see it.
Explanation:
Both microscopy and motility agar are required to determine motility in some microbes because both substances helps to find out the mobility in the microbes. Motility agar is the medium that allows microbes to swim if they have flagella in their body while on the other hand, microscope is used to see the movement of microbes in motility agar. Microbes are small creature which can't be seen through naked eyes so we used microscope for it.
Which of the following separates the DNA strands during replication
a.
helicase
b.
nuclease
c.
ligase
d.
DNA polymerase I
e.
primase
Answer:
I think it's b not sure though
Which of the following is not a contribution of Gregor Mendel to the field of genetics?
A. Discovering Natural Selection
B.Identifying dominant and recessive traits
C. Making genetic predictions
Answer:
its c
Explanation:
An example of a parallel choice on a dichotomous key is
Answer:
brown hair or black hair.
Kudzu, a vine native to Asia, was introduced into the USA in 1876. Farmers in the South were encouraged to plant kudzu to reduce soil erosion. Once established in its new habitat kudzu can grow as fast as a foot a day!
Which of the following is likely NOT true about the impact of kudzu in the South?
a
Kudzu has the potential to overtake and replace native plants
b
Increase the biodiversity of the ecosystem in the South
c
Alter the nitrogen balance of the soil
d
Have long term impacts on the local organism populations
Answer:
hi what did you get for this one?
Explanation:
The statement which is not true about the impact of kudzu in the South is that it has long-term impacts on the local organism populations. Thus, the correct option for this question is D.
What is Habitat?Habitat may be defined as a type of natural environment for which a particular species is best adapted due to natural selection. It is generally an area or place where all the basic demands of an organism are fulfilled like food, space, mating partner, resources, etc.
According to the context of this question, the farmers in the south were encouraged to plant kudzu to reduce soil erosion. This means that it has the ability to increase the biodiversity of the ecosystem in the South.
Apart from this, it also has the potential to overtake and replace native plants. It also alters the nitrogen balance of the soil. But it does not express long-term impacts on the local organism populations.
Therefore, the statement which is not true about the impact of kudzu in the South is that it has long-term impacts on the local organism populations. Thus, the correct option for this question is D.
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Question 9 (1 point)
The producers that live in the abyssal zone are chemosynthetic because this zone has no what
Answer:
No sunlight penetrates the Abyssal zone.
Explanation:
I did this on my study guide a while back and got an A for it.
in the fermentation experiment using yeast with the different sugars what was the dependent variable
Answer:
The dependent variable is fermentation rate.
Explanation:
When finding dependent variable phrase it like this:
______ depends on _____.
Where the first blank is the dependent variable and the second blank is the independent variable. For example, if I were to test the effects of pH on an enzyme, I would say the function of the enzyme depends on the pH level. This makes the function of the enzyme the dependent variable. In this case, fermentation rate depends on the different sugars. Hope this helps!
Please Help!!! Will give points to best answer Which is the complimentary mRNA strand that would be created during transcription for the following DNA sequence:
1. Most organisms have only one cell.
True or false
Answer:
True
Explanation:
Hope this helps!! :)
Prey are dependent on their predators for food true or false
Answer:
True
Explanation:
Prey depend on the predators to take out competition
Answer:
false
Explanation:
Research has found that chimpanzees in one area make spears to help them hunt bushbabies (African lorises). The chimpanzees locate a tree trunk in which the bushbabies live. They then select a tree branch, trim off the leaves and side branches, and trim the end of the branch to form a sharpened tip. The chimpanzees thrust these branches, like spears, into the tree to try to stab bushbabies (see the Lab 11 Exercise Image Library on p. 336 of your lab manual for associated images).
Is this behavior an example of nonhuman primate culture?
1. Yes
2. No
Primates often work together while hunting and then share the meat with others in the group.
1. True
2. False
Answer:
1. Yes
1. True
Explanation:
A.
Yes, it is a nonhuman primate cultural example: Despite the fact that many nonhuman primates lack apparent cultural traditions in the same manner that humans do, primatologists have uncovered a number of behavioral habits that differ between populations and are passed down through socialization and language interaction. The employment of tools by chimps for hunting is one of the most prominent examples of this. Chimpanzees in the African Savannah have been observed fashioning sticks into weapons to hunt bush infants, according to researchers. In each example, a chimp changes a branch by snapping off one or two ends and sharpening the stick with its teeth. The spear is then jabbed into the bottom of the trunk, where the bush infants slumber. Because this complicated behavior appears to differ between communities, it is thought that chimpanzee tool usage is socially acquired, and hence a cultural behavior.
B.
Chimpanzees hunt in groups so that they may corner their prey even if the canopy is continuous. Each chimpanzee within the hunting parties has a specific function to play during an arboreal hunt. Drivers are responsible for keeping the prey moving in a specific route and following them without trying to grab or catch them. Blockers are positioned at the base of the trees, climbing up to stop prey from fleeing in the other direction. Chasers move swiftly and attempt to capture the prey. Finally, when one monkey approaches, ambushers hide and flee. The food is delivered to all members of the hunting group once the animal has been trapped and slaughtered.
Which of the following processes depend on fusion?
A. the atomic bombs used in World War II
B. the energy production in the sun
C. the geothermal heating in the mantle of the Earth
D. the energy production in nuclear reactors
Answer:
B. the energy production in the sun.
Explanation:
The sun ngenerates its energy by nuclear fusion of hydrogen nuclei into helium.
The right answer to the provided question is that the sun's energy generation method is based on fusion.
How nuclear fusion occurs in sun?
Nuclear fusion is the process that occurs when two or more atomic nuclei unite to generate one or more distinct atomic nuclei and subatomic particles neutrons or protons.
The mass differential between reactants and products results in either energy release or absorption.
In the Sun's core, hydrogen is being converted into helium. This is referred to as nuclear fusion.
The fusion of four hydrogen atoms produces one helium atom. During the process, some of the mass is converted into energy.
So, we can conclude that Nuclear fusion occurs within the sun's core. Because of the amount of pressure within the sun, nuclear fusion occurs at its core.
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Which statement does NOT describe an acquired trait of a plant or animal? A) Traits that occur after an organism is born. B) Traits that can be caused by environmental factors. C) Traits that are not passed down from generation to generation. D) Traits that are seen in the organism's physical characteristics like eye or hair color.
Answer:
A) traits that occur after an organism is born
Explanation:
Changes in ecosystems are most pronounced when humans remove which species?
Answer:
Of course predators consume prey, but in doing so, they may have broader impacts on communities as a whole. That is to say, predators help to maintain a balance among organisms, both by consuming prey and by altering prey behavior and prey habitat selection. This article describes how predators influence the composition and distribution of species in communities.
Explanation:
A body is negatively charged when________
1) It has lost neutrons
2) It has gained extra electrons
3) It has lost electrons
4) It has gained protons
Answer:
2.it has gained extra electron
Answer:
no 3 it has lost electrons
Epinephrine causes the enzyme glycogen phosphorylase to break down glycogen within a cell. Epinephrine performs this task on intact cells, meaning cells that have a membrane (not just cell contents placed in a medium). What does this fact reveal
Answer:
The fact that it reveals is that:
Epinephrine binds to the receptor tyrosine kinase on the cell membrane and does not act on glycogen phosphorylase.
Explanation:
In cellular respiration, epinephrine is a neurotransmitter and a plasma membrane hormone receptor. It is not a lipid-derived hormone, but rather an amino acid-derived hormone. As a result, they are unable to pass through the plasma membrane of cells. They bind to receptors on the outer surface of the plasma membrane through plasma membrane hormone receptors (receptor's tyrosine kinase of the cell membrane) because they are lipid insoluble hormones.
Unlike steroid hormones, lipid insoluble hormones (epinephrine) do not directly influence glycogen phosphorylase or the target cell because they cannot enter the cell and operate directly on DNA. The activation of a signaling pathway occurs when these hormones attach to a cell surface receptor; this activates intracellular activity and performs the hormone's specific effects. Nothing crosses through the cell membrane in this fashion; the hormone that binds at the cell's surface stays at the cell's surface, while the intracellular component stays within the cell.