How does energy from cellular respiration ultimately comes from the sun
How are organisms that have alternating generations different from most plants and animals?
Answer:
plant organisms can alternate between diploid sporophyte and haploid gametophyte phases.
Explanation:
Once mature, the gametophyte produces male and female gametes. When haploid gametes unite, they form a diploid zygote. The zygote grows via mitosis to form a new diploid sporophyte,Thus unlike in animals.
Cancer is caused by
A. out of control DNA replication.
B. Out of control cell cycle caused by damaged DNA
C. Out of control cell cycle caused by cyclins.
D. Tumors
Answer:
B
Explanation:
cells die when new ones come they create tumors etc
Smelts are the primary food source for lake trout and salmon in Moosehead. In the late 1980s, we documented a dramatic increase in the abundance of wild lake trout in Moosehead Lake. Swelling lake trout numbers taxed the forage base and the smelt population took a dive. What was the result of depletion of the smelt population? Choose all that apply.
A) salmon populations declined
B) all three populations increased
C) all three populations would decrease
D) growth rates of both lake trout and salmon suffered
E) salmon population would decrease but the others would remain unchanged
Answer:A and D
Explanation: trust me don’t put c
In the late 1980s, a dramatic increase in the abundance of wild lake trout decimated the salmon population. The salmon population declined the most in the late 1980s. Option A is the correct answer.
What is the prey-predator relationship?
In an ecosystem, there are predators and prey. If the predator population grows, they will consume more prey more quickly, causing the prey population to decline rapidly. When there are more prey in an ecosystem, it would be advantageous for the predator, and after some time, the prey will decrease in number and the predator will increase.
Salmon, mouth bass, and lake trout feed on smelt in the lake. Lake trout populations increased in the late 1980s, and as a result, they began feeding on smelt. The other two predators were also affected. The salmon population declined for some time, but later their number increased too. The mouth bass population got affected a lot, and their number kept on declining. The other two species chose different prey and multiplied.
Hence, for some time, the salmon population declined. Option A is correct.
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Which organelles are found in an animal cell?
Check all that apply.
endoplasmic reticulum
centrioles
cell wall
vacuoles
lysosomes
mitochondria
chloroplasts
cell membrane
Answer:
1. Endoplasmic reticulum
2. Centrioles
3. Mitochondria
Answer:
A, B, D, E, F, H
Explanation:
Edge… you’re welcome
During development, an absence of ______ protein production causes the mesonephric ducts to degenerate.
An absence of Androgen, Protein production causes the mesonephric ducts to degenerate.
AdrogenAdrogens are x hormones found in males that gives rise to human characteristics present only in male species. Adrogen leads to the growh of mesonepheric ducts while the absence of Adrogen protein production will lead to the degeneration of the mesonephric ducts.
Hence we can conclude that An absence of Androgen, Protein production causes the mesonephric ducts to degenerate.
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What is chromatin?
A. a structure that allows materials in and out of the nucleus
B. a thread-like genetic material formed from DNA and histones
C. a defensive layer that forms when the cell is under attack
D. a structure that protects the nucleus from extreme temperatures
Answer:
B. a thread-like genetic material formed from DNA and histones
The living parts of an ecosystem are referred to as.
Answer:
"Biotic factors" is the awnser
Explanation:
help lol thankyou very much
Answer:
Climate, seasons, summer, winter, wet, solar, tilt, revolution, direct, day
Explanation:
Answer:
1- seasons
2-summer
3- spring
4-winter
5-wet
6-solar
7-tilt
8- revolutions
9- dirsct
10- day
what is abc control disease method
Answer:
Active Bacterial Core surveillance (ABCs) is an active laboratory- and population-based surveillance system for invasive bacterial pathogens of public health importance.
Explanation:
Which of these is an example of both an acquired and inherited trait?
Just look at the picture :)
Answer:
The answer is d)
Explanation:
The cell will shrink because it is in a hypertonic solution.
This is because, in osmosis, water moves from a higher concentration to a lower concentration of water.
In this question, more water is present inside the cell as the percentage of NaCl (salt) is 0.9%. There is less water outside the cell as there is 1% of NaCl... So..the water will move outside the cell and the cell will shrink.
Also, the type of solution given is called a hypertonic solution.
Hypertonic solution: If the medium has a lower concentration of water than the cell, it is a hypertonic solution.
Hope it helps.
Adequate vegetation in certain areas can___.
2. Describe the different ways that a system can be efficient. For example, time
efficiency, economic efficiency, and resource efficiency.
What Is Economic Efficiency?
Economic efficiency is when all goods and factors of production in an economy are distributed or allocated to their most valuable uses and waste is eliminated or minimized.
KEY TAKEAWAYS
Economic efficiency is when every scarce resource in an economy is used and distributed among producers and consumers in a way that produces the most economic output and benefit to consumers.
Economic efficiency can involve efficient production decisions within firms and industries, efficient consumption decisions by individual consumers, and efficient distribution of consumer and producer goods across individual consumers and firms.
Pareto efficiency is when every economic good is optimally allocated across production and consumption so that no change to the arrangement can be made to make anyone better off without making someone else worse off.
1:17
Economic Efficiency
Understanding Economic Efficiency
Economic efficiency implies an economic state in which every resource is optimally allocated to serve each individual or entity in the best way while minimizing waste and inefficiency. When an economy is economically efficient, any changes made to assist one entity would harm another. In terms of production, goods are produced at their lowest possible cost, as are the variable inputs of production.
Some terms that encompass phases of economic efficiency include allocative efficiency, productive efficiency, distributive efficiency, and Pareto efficiency. A state of economic efficiency is essentially theoretical; a limit that can be approached but never reached. Instead, economists look at the amount of loss, referred to as waste, between pure efficiency and reality to see how efficiently an economy functions.
Economic Efficiency and Scarcity
The principles of economic efficiency are based on the concept that resources are scarce. Therefore, there are not sufficient resources to ensure that all aspects of an economy function at their highest capacity at all times. Instead, scarce resources must be distributed to meet the needs of the economy in an ideal way while also limiting the amount of waste produced. The ideal state is related to the welfare of the population with peak efficiency also resulting in the highest level of welfare possible based on the resources available.
Efficiency in Production, Allocation, and Distribution
Productive firms seek to maximize their profits by bringing in the most revenue while minimizing costs. To do this, they choose the combination of inputs that minimize their costs while producing as much output as possible. By doing so, they operate efficiently; when all firms in the economy do so, it is known as productive efficiency.
Consumers, likewise, seek to maximize their well-being by consuming combinations of final consumer goods that produce the highest total satisfaction of their wants and needs at the lowest cost to them. The resulting consumer demand guides productive (through the laws of supply and demand) firms to produce the right quantities of consumer goods in the economy that will provide the highest consumer satisfaction relative to the costs of inputs. When economic resources are allocated across different firms and industries (each following the principle of productive efficiency) in a way that produces the right quantities of final consumer goods, this is called allocative efficiency.
Finally, because each individual values goods differently and according to the law of diminishing marginal utility, the distribution of final consumer goods in an economy are efficient or inefficient. Distributive efficiency is when the consumer goods in an economy are distributed so that each unit is consumed by the individual who values that unit most highly compared to all other individuals. Note that this type of efficiency assumes that the amount of value that individuals place on economic goods can be quantified and compared across individuals.
Economic Efficiency and Welfare
Measuring economic efficiency is often subjective, relying on assumptions about the social good, or welfare, created and how well that serves consumers. In this regard, welfare relates to the standard of living and relative comfort experienced by people within the economy. At peak economic efficiency (when the economy is at productive and allocative efficiency), the welfare of one cannot be improved without subsequently lowering the welfare of another. This point is called Pareto efficiency
Since cuts from restriction enzymes occur in both dna backbones at different locations, the resulting dna fragments have unpaired regions called __.
Answer: Since cuts from restriction enzymes occur in both dna backbones at different locations, the resulting dna fragments have unpaired regions called overhangs
The cuts caused by restriction enzymes occur in different places in both DNA backbones; the resulting DNA fragments have unpaired regions known as overhangs.
What is recombinant DNA technology?In this technology, the modification of DNA is done by combining the original DNA with the desired gene. In gene editing, recombinant DNA technology is used. The most suitable organisms for this purpose are bacteria, yeasts, etc. They grow rapidly in a short period of time. As a result, they can provide desired products in a short period of time.
The desired gene is extracted and introduced into the bacteria using recombinant DNA technology. The DNA of bacteria is cut by restriction endonucleases. As a result of cutting, overhangs are produced.
The desired gene is taken and introduced to the bacteria's DNA. The bacteria transcribe and translate the target gene. An example is humulin. This process produces human insulin.
Hence, DNA fragments have unpaired regions called "overhangs."
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When does the total number of chromosomes get reduced from 46 pairs to 23 individual chromosomes?.
Explanation:
The other type of cell division, meiosis, ensures that humans have the same number of chromosomes in each generation. It is a two-step process that reduces the chromosome number by half—from 46 to 23—to form sperm and egg cells.
The generation of an electric current in a closed circuit by a changing magnetic field is .
Electromagnetic induction! Have a nice day!
Answer:
Electromagnetic induction
Explanation:
edge
An abiotic factor is a part of the environment that is not living and has never
Answer:
Ecology is the study of how living organisms interact with each other and with their environment. Abiotic factors are the parts of the environment that have never been alive, while biotic factors are the parts of the environment that are alive, or were alive and then died
Explanation:
hope this helps
Which of the following is a learned behavior? question 7 options: a person touching a red burner on the stove and pulling it back quickly. baby ducks follow their mother immediately after birth. infant babies breathing as soon as they are born
Answer:
baby ducks follow their mother immediately after birth.
Explanation:
elect all the correct answers. Which of these statements about fungi are true? 1.Some fungi can directly infect human tissue and cause disease. 2.All fungal cells are eukaryotic. 3.Some fungi can make food using photosynthesis. 4.All types of fungi are harmful to human populations.
Answer:
1 and 2
Explanation:
1- some fungi are harmful to us like Aspergillosis, however not all of them are harmful to us.
2- all fungi are eukaryotes because they have a well organized cell.
3- fungi do not contain green pigment so therefore cannot do photosynthesis. They instead use digestive enzymes to digest the food externally.
4- not all fungi are harmful to humans or animals, for example yeast is a fungus but it is used a lot in cooking/baking.
Hope this helps good luck!
How do plants return nitrógen to the soil
Answer:
I think when plants decompose, nitrogen gets realesed back into the soil.
Answer:
Plant and animal wastes decompose, adding nitrogen to the soil. Bacteria in the soil convert those forms of nitrogen into forms plants can use. Plants use the nitrogen in the soil to grow. People and animals eat the plants; then animal and plant residues return nitrogen to the soil again, completing the cycle.
will give brainliest to correct answer
Answer:
(i)
x= nucleus
y= chloroplasts
z= vacuole
(ii)
1) an animal cell does not contain a vacuole but a plant cell does
2) a plant cell contains chloroplasts but an animal cell does not
The first part of the lab procedure focused on temperature. There were several factors, which are listed below. Label each factor as “variable” or “constant.”
Amount of water:
Reaction rate:
Temperature:
Initial amount of tablet:
Particle size:
Answer:
Amount of water is constant
Reaction Rate is variable
Temperature is variable
Initial amount of tablet is constant
Particle size is constant
Explanation:
The first part of the lab procedure focused on temperature. There were several factors, and we are classifying each of the factors as variable or constant.
What are variable and constant parameters ?The variable parameters are those quantities that are not fixed in the experiment but are constantly changing in the course of the experiment with time.
The constant parameters are those quantities or variables that are fixed and posses a same value in the course of the experiment with the change in time.
Labelling the factors given as variable or constant -Amount of water is constant.
Reaction Rate is variable.
Temperature is variable.
Initial amount of tablet is constant.
Particle size is constant.
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You see a blood vessel from a creature. You have no idea what creature and you have no
idea where it came from. You do notice, however, that the blood vessel wall is very thin. What kind of blood vessel is this?
Answer:
I think Capillary would be this correct answer
Hope this helps!
Is melanin a gene or protein?
Answer:
Protein
Explanation:
Melanin is a protein that affects the color of our hair, skin, or animals fur.
I hope it helps! Have a great day!
Pan~
Answer:
Protein
Explanation:
Melanin is a protein that causes color.
I hope it helps! Have a great day!
Moronic~
How do you think actions in the human body
might be like the system the ants use to transport food?
Answer
Ants bring food to one location, the food they bring in helps to make more ants and keep the cycle going. Like ants our blood cells break down the nutrients we get from food into nutrients and other beneficial things we need in our body, those same blood cells as well as new ones, use energy to make more cells. This almost neverending cycle helps sustain our human bodies so we can keep living and create more humans.
what is cell?
hello friends!
I will leave brainly soon
Answer:
Listen to pronunciation. (sel) In biology, the smallest unit that can live on its own and that makes up all living organisms and the tissues of the body. A cell has three main parts: the cell membrane, the nucleus, and the cytoplasm.
Explanation:
or do you mean phone number?
Which of the following classifications indicates the closest evolutionary relationship between Organisms A and B?
Organism A and Organism B are in the same genus.
Organism A and Organism B are in the same phylum.
Organism A and Organism B are in different phyla.
Organism A and Organism B are in the same Kingdom
Answer:
answer d
Explanation:
How would larger substances like proteins get into or out of the cell membrane?
Answer:
It is possible for large molecules to join a cell by a method called endocytosis, where a small piece of the cell membrane surrounds the particle and is brought into the cell. If the particle is solid, endocytosis is also dubbed phagocytosis. If fluid droplets are taken in, the process is called pinocytosis.
What number is ten times greater than 40?
Answer:
The answer would be 400
Explanation:
Like you said, "what is ten times greater than 40" that would 400, because 10 x 40 = 400
Answer:
Ten times meaning you multiply 40 by 10.
40 × 10 = x
400 = x
A number 400 is ten times greater than 40.