Are Analogous structures an indication that two organisms might have a recent common ancestor
Answer:
not all structures that look alike are due to common ancestry. Analogous structures evolved independently in different organisms because the organisms lived in similar environments or experienced similar selective pressure.
Explanation:i know
which organism is the decomposer
Answer:
Fungi are decomposers in the natural kingdom.
Explanation:
they do not rely on photosynthesis for energy, instead rely on breaking down dead organic matter such as animal corpses, dead plants, etc...
Answer:
Fungi and bacteria are decomposers. Decomposers jobs are to take remains of organisms and filter them into nutrients that help the ecosystem.
Cynthia observed a cell with a pair of sister chromatids moving towards a given pose as a single unit and another cell with sister chromatids moving to opposite poles. What’s did she infer from her observation
Answer:
Anaphase I and Anaphase II
Explanation:
In anaphase I, homologous chromosomes go to opposite poles (thus the first cell was under anaphase I), whereas, anaphase II moves individual chromatids to opposite poles (thus second cell was undergoing anaphase II)
what is the chain-like structure in your body that codes for all your traits? is this different for all species?
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1. The graph shows the distribution of the weights of individual dogs in a population of dogs.
Graph that shows the distribution of the weights of individual dogs in a population of dogs.
Answer the following questions using the axes provided.
a) Draw a possible curve for the population several generations later if the population has stabilizing selection. (1 point) Similar graph too the one above the peak is between 25-35 the drop is between 35-50 Rise is between 15-20
b) Draw a possible curve for the population several generations later if the population has directional selection. (1 point) peaks: 10-20 30-40. Rise: 0-10 30-40 Drop: 20-30 40-50
c) Draw a possible curve for the population several generations later if the population has disruptive selection. (1 point)
d) How do these selective pressures affect the genetic variation in the population? (1 point)
2. a) In what way is the genetic code in all organisms the same? (1 point)
b) Humans and chimpanzees have very similar DNA. What does this say about these two species? (1 point)
c) Did humans evolve from Neanderthals? Explain. (2 points)
d) What other hominids evolved from the same common ancestor as humans? (1 point)
e) Dolphins and porpoises are closely related species. Name three ways that you would be able to find evidence for this. (3 points)
1)
2)
3)
3. For each environment below, describe why you think it would have a high or low rate of speciation.
A rugged mountain terrain (1 points)
A large, open forest (1 points)
An island in the ocean (1 points)
4. A cladogram is shown below.
a) Why is the amoeba considered an outgroup in this cladogram? (1 point)
b) What trait does a salmon have that an earthworm does not? (1 point)
c) What does this cladogram tell you about the evolutionary relationship of the traits of jaws and limbs? (1 point)
d) A squirrel glider is an organism with jaws, limbs, and hair. It does not use a placenta for reproduction. Where do you think this organism would belong in the cladogram? (1 point)
5. a) How are bacteria and archaea similar? (1 point)
b) How are they different? (1 point)
c) Which are more closely related to complex organisms, bacteria or archaea? Explain. (2 points)
6. Name three adaptations that helped plants survive on land, and describe how each of them helped. (2 points)
Answer:
Explanation:
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1. The graph shows the distribution of the weights of individual dogs in a population of dogs.
How many sets of chromosomes do you start out with and end with in mitosis?????
Answer:
In mitosis you start with the full amount of chromosomes 46 (also known as 2n or diploid). Then the resulting daughter cells also have the full amount of chromosomes present, 46.
Tillage can release pollutants in the soil and
increase erosion.
decrease erosion.
promote soil compaction.
promote fertilizer retention.
Tillage can release pollutants in the soil and increase erosion by the acceleration of the soil and wind speed.
How doesTillage can increase erosion ?
Tillage can split soil structure, pace the decomposition and lack of natural matter, boom the hazard of erosion, break the habitat of useful organisms and reason compaction.
Each of those capability effects negatively effect soil fine. A soil's overall performance is immediately associated with a soil's fine or health. Since tillage breaks the soil, it disrupts soil structure, accelerating floor runoff and soil erosion. Tillage additionally reduces crop residue, which assist cushion the pressure of pounding raindrops.
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Answer:
A. increases erosion
Explanation:
Which of the following is a strategy to reduce indoor air pollution?
A: Poorly ventilated cooking fires
B: New building techniques that push air outside
C: Store cleaning solvents in the kitchen
D: Use paint with high VOCs
Answer:
the answer is b I think
Most bacteria are ______, feeding on organic material formed by other organisms.
(Fill in the blank)
Help with question please
In her book, Silent Spring, Rachel Carson describes the adverse effects on the environment due to the use of pesticides.
Which of the following effects could be expected as a result of this human
behavior:
A.) A decrease in the number of both insect and wind pollinated
plants.
B.) An increase in the number of both insect and wind pollinated
plants.
C.) A decrease in wind pollinated plants.
D.) A decrease in insect pollinated plants.
Answer:
plants.
B.) An increase in the number of both insect and wind pollinated
plants.
C.)
Explanation:
HI....
A.hydrophobic tail
B.hyrophobic head
C.sodium-potassium pump
D.ATP
Answer:
A. Hydrophobic tail
Explanation:
Hydrophobic tails face inward and hydrophilic heads face outward.
this diagram illustrates the three types of plant tissue.
Which main plant tissues are the lines pointing to the enlarged diagram?
The main plant tissue that the lines in the enlarged diagrams point to is the ground tissue.
What are ground tissues in plants?Ground tissues in plants refer to the collenchyma tissues, the parenchyma tissues, and the sclerenchyma tissues.
In other words, they are tissues that are neither dermal nor vascular in origin.
Different ground tissues perform different functions depending on the part of the plants in which they are found. the functions range from photosynthesis in leaves to storage in roots, and support functions.
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Answer:
b
Explanation:
Jenny was interested in studying how much gas a car uses at different speeds. Jenny did one test with her mother's car and found that it used about 3 percent more gas when speed increased by 5 miles per hour.
How can Jenny make the results of her investigation more reliable?
A.
avoid recording any data during the experiment
B.
communicate her results immediately after the one test
C.
redo the steps of the experiment in a different order
D.
repeat the investigation several times
Dead bacteria and cells in the tissue form ___.
Answer:
Pus or thick fluid caused by infection
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How are organisms in the domain eukarya different from those in the domain archaea
Answer:
Archaea: cells do not contain a nucleus; they have a different cell wall from bacteria. Eukarya: cells do contain a nucleus.
Which of the following is an advantage of driving a hybrid vehicle instead of a
traditional gasoline-powered vehicle?
A. It works only on sunny days.
O B. It uses more fossil fuels.
C. It takes longer to drive places.
O D. It conserves fossil fuels.
This is a simplified coastal Maine food web. Assume the phytoplankton has 50,000 J of energy available. What can you infer? Select ALL that apply.
A) The kelp bass has 5000 J of energy available.
B) The plainfin midshipman has 5000 J of energy available.
C) The kelp bass has 1% of the energy of the phytoplankton.
D) Primary consumers have 10% of the energy of the producers.
E) The zooplankton has 90% of the energy of the phytoplankton.
According to the question it was concluded that :
The zooplankton has 90% of the energy of the phytoplankton.
The kelp bass has 1% of the energy of the phytoplankton.
What is 10% law who proposed it?Reymond Lindeman proposed ten per cent of energy transmitting law.
The 10 per cent energy is transmitting of energy one trophic level to the next trophic level.
Thus, option E and C correct, according to 10% law.
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light harvesting complex 1
Light-harvesting complex 1 captures the light energy from the sun and transfers it to the reaction center for the induction of redox processes.
How many types of light-harvesting complexes are there?There are two types of light-harvesting complexes which are most commonly known. LHC-I surrounds photosystem I, and LHC-II that surrounds photosystem II of the membrane.
LHC-I is dimeric in nature that is tightly bound to the photosystem I of the thylakoid membrane. It assists the photosystem I to receive the far-red light and releases its electrons.
Therefore, it is well described above.
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Write 5 lines about Saprophytic bacteria.
Answer:
An organism, especially a fungus or bacterium, that grows on and derives its nourishment from dead or decaying organic matter.
During the process of feeding, Saprophytes break down decomposed organic matter that is left behind by other dead organisms and plants.
Explanation:
Saprophytic: The mode of nutrition in which organisms feed on dead and decaying matter. Example fungi.
______ power creates water reserves as well as renewable energy.
A) geothermal
B) hydrological
C) tidal
D) wave
what do coral reefs do as producers? what do they create for the ocean
Answer: Coral reefs are important to the ecosystem because they are the pillars on which marine and coastal ecosystems are built. They keep plants, fish, and animals fed. They clean up our water and protect our coasts.
Explanation: Hope it helps :)
Identify one positive impact from the production of antibiotics such as Penicillin.
Answer: Antibiotics can prevent the spread of disease. And antibiotics can reduce serious disease complications.
Explanation: Antibiotics are medicines that fight bacterial infections in people and animals.
What are the reactants and products for each step of photosynthesis and cellular respiration?
Answer:
Photosynthesis:
1) Reactants = CO2, Water, Sunlight
2) Products = O2, Glucose,
Cellular Respiration:
1) Reactants = O2, Glucose
2) Products = CO2, Energy
Explanation:
Hope this helps . Thank You !!!!
Answer:
Photosynthesis converts carbon dioxide and water into oxygen and glucose. Glucose is used as food by the plant and oxygen is a by-product. Cellular respiration converts oxygen and glucose into water and carbon dioxide. Water and carbon dioxide are by-products and ATP is energy that is transformed from the process.
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answer a few questions abt flowers :)
1. Why are flowers an important adaptation of flowering plants?
2. How can fruit play a role in seed dispersal?
3. How do botanists classify flowering plants?
4. You can see from the micrograph images above that the surface structure of a pollen grain is sculpted and spiky. Why do you think this is so?
5. In Hakea, the stomates are protected from direct exposure to the air by enlarged epidermal cells. In what environment do you think this adaptation is necessary? Explain your reasoning.
Answer:
Flowers produce seeds needed to make more plants.Some fruits contain seeds. Seeds can spread into more seeds which lead to more fruits.They divide them into 3 groups; perennials, biennials and annuals.To protect the plant from predators.A very windy environment, because although it would be difficult to occur, the plants could get blown away.Which occurrence is an example of eustress (or good stress)?
A. getting fired from a job
B. failing a class at school
C. going away to college
D. losing a loved one
Answer:
Explanation: got it correct on edmentum
Single celled organisms are…. (select all that apply) A. Made up of one cell. B. Often microscopic and are limited in size. C. Able to meet all the challenges of life with in one cell. D. Able to differentiate to preform a specific job.
Answer:
Single celled organisms are made up of one cell, often microscopic and limited in size, able to meet all challenges of life with in one cell, and are able to differentiate to perform a specific job.
Explanation:
Singled celled organisms are usually, as the name suggests, single celled. To see one, you must use a microscope, and usually range anywhere from 0.5 to 10cm tall. A single celled organism can preform the necessary functions for life. They can eat, breathe, grow, and do other things other organisms with more than one cell.
Describe how adaptations are favorable in a specific environment. Describe the formatting of a scientific name. Describe Cladograms and phylogenetic trees.
Answer:
a diagram that depicts the lines of evolutionary descent of different species, organisms, or genes from a common ancestor.
Explanation:hope its help :)
Describe the energy conversions that occur as a microwave oven heats a cup of water. Give at least two energy
conversions. Explain how these energy conversions affect the process of heating water particles in a cup using a
microwave. Enter your answer in the box provided.
Where do scientists think the water on Earth might have come from?
1. all planets have water from the sun
2. stars collided with dust particles
3. dust particles combined with magnetic forces around Earth
4. asteroid collisions delivered water to early earth
Answer:
number 2 is the right answer i think
Answer:
all plants have water from the sun