The bones of a whale flipper and a batwing are homo-logous structures because the structures are similar but have different functions. They have a common origin.
What are homo-logous structures?Homo-logous structures can be considered as similar structures that have the same evolutionary origin but may or not have the same function.
Homo-logous structures are always present in a common ancestor of the species that have these structures.
Conversely, analogous structures have the same function but they do not exhibit a common origin.
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One summer, a sinkhole opened up in a swamp and all of the water in the swamp dried up. The next summer, there was an extraordinary amount of rain, and the dry basin that had been the swamp filled with water. The environmental change that occurred in the second year acted to
A. decrease the stability of the swamp ecosystem.
B. slow climate change in the swamp ecosystem.
C. increase the stability of the swamp ecosystem.
D. speed up climate change in the swamp ecosystem.
What does the DNA shape remind you of?
How many strands do you see?
Answer:
The shape is a double helix, but it's helpful to think of it like a twisted ladder. Here, there are two strands. A strand is the line of circles you see that the lines connect to.
Hope this helps!!
1. Explain the roles of environment and genetics in causing cancer. GUYS PLS HELP ME.ILL GIVE U BRAINLIEST JUST PLS HELP
Answer:
Cancer is caused by changes to certain genes that alter the way our cells function. Some of these genetic changes occur naturally when DNA is replicated during the process of cell division. But others are the result of environmental exposures that damage DNA.
Which
component is missing from the process of cellular respiration?
+ Oxygen -› Carbon Dioxide + Water + Energy
Sunlight
Sugar
Oxygen
Carbon
Answer:
Sunlight
Explanation:
Because you need oxygen carbon dioxide water sunlight and energy to process the cycles
what is an example of community
Answer:
The definition of community is all the people living in an area or a group or groups of people who share common interests. An example of community is a group of Buddhists who meet and chant together.
HOPE IT HELPS, BE SAFE PLSSSS :)
Answer:
It is a neighberhood
ExplanatioIn:
because community means tigether
What is the variation in the population?
answers;
1) smaller and larger mice
2) mice that are poisonous if eaten
3) fast and slow mice
4) light and dark colored mice
Answer:
4) the light and dark colored mice
Observation of the development of embryos in sea stars shows the mesoderm forming pouches bulging from the archenteron to form the coelom. From this observation, you can predict that (use the Photo below for the answer choices)
Answer:
A. the cleavage of the embryo is radial
Explanation:
The sea star is considered radial symmetry in its adult life.
The Industrial Revolution resulted in
Question 1 options:
handmade goods
a shortage of workers on farms
a great migration of people from rural areas to cities
more time for people to spend with their families
Answer:
A great migration of people from rural areas to cities
1 - The visible differences between male and ........... that appear during the life are called ........... ............
2. During the breeding period, the male and female have attitudes and perform actions which together constitute the reproductive ................. This latter is translated by a change of .............. in fish, ............... in frog, and ............. in rooster.
3 - The partners, approach often leads to a .............. This approach is realized by means of visual, olfactory or ................ communication.
4. Certain .............. animals do not mate, yet their reproduction is ensured. Their eggs are released into the ................ and covered by .............. and .................. occurs which results in the formation of eggs.
Explanation:
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The image shows prairie plants that live in an ecosystem. Which best describes a feature of the prairie plants that allow them to compete with each other?
A. The leaves help the prairie plants compete for warmth.
B. The long roots help the prairie plants compete for food.
C. The leaves help the prairie plants compete for sunlight.
D. The long roots help the prairie plants compete for water.
What is the main difference between cell division in plants animals
Answer: The key difference between plant and animal cell division is that plant cells form the cell plate in between the two daughter cells in mitosis, whereas the cell membrane forms the cleavage furrow in between the two daughter cells in animal cells.
Hope this helps!
Answer:
The key difference between plant and animal cell division is that plant cells form the cell plate in between the two daughter cells in mitosis, whereas the cell membrane forms the cleavage furrow in between the two daughter cells in animal cells.
Explanation:
Identify the macromolecules in the image
Answer:
there is no image here you have only posted the question and not the attachment that is needed to answer
Help me please I need to pass
Earth and space
Answer:
I think B and D
Explanation:
A moraine is a mass of rocks and sediment carried down and deposited by a glacier, typically as ridges at its edges or extremity.
Question 2 of 5
What is another name for non-traditional sports?
A. Alternative
B. Foreign
C. Team
D. Random
another name for traditional sports is alternative sports
How do you know you have a recessive allele
or a dominant allele?
Answer:
A dominant allele produces a dominant phenotype in individuals who have one copy of the allele, which can come from just one parent. For a recessive allele to produce a recessive phenotype, the individual must have two copies, one from each parent.
Explanation:
If oxygen attoms are low concentration outside of the cell, but the cell requires more oxygen, how will the cell move the oxygen inside of the cell?
describe the endosymbiont theory
Answer:
The Endosymbiotic Theory states that the mitochondria and chloroplast in eukaryotic cells were once aerobic bacteria (prokaryote) that were ingested by a large anaerobic bacteria (prokaryote). This theory explains the origin of eukaryotic cells.
Explanation:
Help me please I need help
Earth and space
Answer:
I think the answer will be carbonation
so it's d
Answer:
The Answer is D Carbonation
Carbonation is the chemical reaction of carbon dioxide to give carbonates, bicarbonates, and carbonic acid.
Carbonation is the process by which rainwater mixes with carbon dioxide in the air to form carbonic acid when this mineral reacts with rocks such as limestone it breaks down causing caverns.
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How are fossils used to interpret Earth's past physical and biological history?
Which type of literature would be best to use for a student that is writing a science research paper for one of his/her sciences courses in college?
Primary literature
Secondary literature
Tertiary literature
For a student that is writing a science research paper for one of his/her science courses in college, the best literature to use would be secondary.
Types of literatureThe literature that can be consulted for research are of 3 types:
primary, secondary, and tertiary literature.Primary literature are original research with raw data that are yet to be analyzed and conclusion drawn from.
Secondary literature are those research literature whose data has been analyzed, interpreted and conclusions drawn.
Tertiary literature are those that index primary/secondary literature.
Thus, for a college student, it is best to get information from secondary literature in which analysis and conclusions have been made about the data.
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Draw an illustration that explains the procedure described in Technology on the Case. Then, using your illustration and evidence from the text, construct an explanation for how this procedure prevents the transmission of LHON from one generation to the next.
YA . Stress and anxiety of this factor:which organs of the body are affected ?
Answer:
all of them in my opinion
Explanation:
I'm not 100% sure on all the "scientific" answer. But it effects all of my organs :|
Answer:
Stress affects all systems of the body including the musculoskeletal, respiratory, cardiovascular, endocrine, gastrointestinal, nervous, and reproductive systems.
Explanation:
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If a tree has 10 dark rings and 10 light rings, how old is the tree? 10 years 2 years 20 years 5 years
PLSSSSS HELP ME and I’ll mark u branniest or what ever it is
Answer:
interphase
Explanation:
a cell spends most of its time in this stage. it grows, and replicates chromosomes and prepares for cell division
You are studying a protein that you think functions as a protease. You know the genetic code and amino acid sequence for the protein and you hypothesize that a serine is critical to the enzyme's function. Describe an experiment or set of experiments that would test your hypothesis.
It is possible to remove serine by targeting mutagenesis and then observe how this modification changes the function of the protein in the cell. Serine is often a target for phosphorylation.
What is serine?Serine is one fundamental amino acid, i.e., a building block of biomolecules called proteins.
Serine is often a target for posttranslational modifications, especially protein phosphorylation.
In a given cell, serine phosphorylation may activate or deactivate specific signaling pathways.
In this case, it is possible to identify other serine proteases by sequence homo-logy using the BLAST bioinformatic tool.
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Explain what would be the effect of having stratified epithelium in the alveoli of the respiratory system?
The alveoli needs of the epithelium for the gaseous exchange and stratified squamous epithelium are formed of multiple layers the difficulty in a gaseous exchange
If alveolar tissue were manufactured of stratified epithelium rather than simple squamous epithelium, oxygen diffusion would be reduced.
What is stratified epithelium?A stratified epithelium is a type of epithelial tissue made up of multiple layers of epithelial cells.
The only layer in contact with the basal lamina is the basal layer. This layer also undergoes mitotic division, resulting in cells in the upper layers.
Depending on their origin, the primary functions of the respiratory epithelium are to moisten, safeguard the airway tract from harmful microorganisms, infections, and tissue injury, and facilitate gas exchange.
Oxygen diffusion would be reduced if alveolar tissue were made of stratified epithelium rather than simple squamous epithelium.
Because of the multiple cell layers, oxygen would have to travel a greater distance to diffuse from the alveoli.
Thus, these can be the effect of having stratified epithelium in the alveoli of the respiratory system.
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The fungus Botrytis is known to cause rot in fruit and decrease the harvest. In an effort to limit the damage, some agriculturalists spray the soil of orchards with fungicides. The effect of fungicides is not specific for Botrytis and kills most fungi in the soil. In a short answer, predict what would happen to the yield of grapes following fumigation and explain the rationale for your prediction.
The yield of grapes following fumigation will be decreased as a result of the effect of fungicides not being specific.
What is Mycorrhizal fungi?This is a type of fungi which is present in the soil and helps plant to absorb more nutrients and water.
Tbis fungi also increases microbial activity which are needed for optimal growth of of the grape. Application of the fungicide will kill these beneficial fungi thereby leading to a decrease in the yield.
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Which is the following is true about the properties of the mantle?
1)The mantle is hotter the core.
2)The mantle contains two different layers.
3)There are rock samples collected from the mantle.
4)The mantle produces magnetic fields.
Answer:
the answer is number 2. the mantle contains two different layers
Explanation:
The core is way hotter then any other layer.
The core produces magnetic fields.
No one would be able to come back alive for a rock sample from the mantle.
During development, a doctor discovers that a fetus is not receiving enough oxygen. Which structure should the doctor examine further to find a source of the problem?
A. Umbilical cord
B. Amniotic sac
C. Uterus
D. Placenta
Answer:
The placenta is responsible for supplying oxygen and nutrients to the growing Fetus.
What are three plant structures in which amylase may be found
Answer:
soybeans, sweet potatoes, barley, potatoes, rice, tomatoes and cereal grains.
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