The bivalve that was a keystone in Iowa, making sure the water stayed clean and filtered, is shellfish.
What are shellfish?Shellfish is a term used to describe the fishes that have exoskeleton and are used to eat.
The shellfish is divided into two groups:
Crustaceans: shrimp, prawn, lobster, etcMolluscan/ bivalves: oysters, clams, mussels, etc.So, the molluscan are believed to keep the water bodies clean
Thus, the keystone species is shellfish.
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Which best describes the arrangement of atoms in a mineral?
A. arranged from most dense to least dense
B. arranged in regular and repeating patterns
C. random
D. weakly bonded
Answer:
A
Explanation:
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What is the definition of Embryology?
A, B, Or C?
A. Similar patterns of embryological development provide further evidence that organisms have descended from a common ancestor
B. All species - living and extinct - are descended from ancient common ancestors
C. At the molecular level, the universal genetic code and homologous molecules provide evidence of common descent
Answer:
A
Explanation:
With Embryology, scientists are trying to see similarities in different organisms' embryo and embryological development to determine if they share a common ancestor. This is a big strategy used by scientists.
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Can I get a retake on Minerals Assignment, Rocks and the Rock Cycle Assignment and i redid Sedimentary Rocks
A factor not shown that provides energy for living organisms is
Answer:
The Sun
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don't spam!! complete answe= Brainliest answer
Answer:
1. Disc throw
2. Car and bike stunts
3. Sneezing
4. Th
rowing a basketball in the basket
5. Archery
Explanation:
Projectile motion is the motion of an object in two dimensions. This means that if an object moves in both the horizontal and vertical directions at the same time, it is said to be exhibiting a projectile motion. In simple words, if an object tends to follow a curved or parabolic path of motion, projectile motion is said to be existing.
Which is NOT a sign of a healthy plant?
Vigorous bright leaves
A sturdy structure
Rootbound roots
Tight buds
Answer:
Tight buds
Explanation:
Showing that its not viable for plants
why must scientific names be of latin original or latinised?
Answer:
This is because Latin language is dead and, therefore, it will not change in form or spelling with the passage of time.
Explanation:
What is the role of mRNA?
A. carries the transcribed message that is
translated into a protein
B. reproduces DNA in the nucleus
C. is a building block of the cell membrane
Answer:
The answer is A. carries the transcribed message that is
translated into a protein
Explanation:
mRNA is read by a ribosome in the process of synthesizing a proteinHow does mining for coal negatively impact the environment?
Answer:
It could require the removal of massive amounts of top soil, leading to erosion, loss of habitat and pollution.
Explanation:
Coal mining causes acid mine drainage, which causes heavy metals to dissolve and seep into ground and surface water.
Ayo what's the answer for Deforestation is a problem because it decreases biodiversity. Why does this happen?
A.) protection of resources
B.) planting of crops
C.) cooling of climate
D.) destruction of habitats
Answer:
D.
Explanation:
deforestation removes forests, aka destructing habitats for animals
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From where do chemotrophs get energy? water, light, food, and air
Answer:
hemotrophs are structures that get strength for one burning of energized matter benefactors in their atmosphere.Chemoautotrophs use not organic strength beginnings to combine basic compounds from colorless odorless gas.Chemoheterotrophs are weak to resort to colorless odorless gas to form their own basic compounds.
Explanation:
Which of the following is not part of the cell theory?
a. All cells come from preexisting cells.
b. Cells make up molecules.
c. Cells are the basic unit of structure and function for life
d. All living things are composed of cells
Modified organisms may contaminate the natural, wild populations.
Which genetic technique is the statement describing an ethical issue of?
A. cloning
B. stem cell research
C. transgenic organisms
D. gene therapy
The genetic technique in the above statement describes an ethical issue of: C. transgenic organisms.
What is a transgenic organism?A transgenic organism can be defined as a type of organism which has been modified with genetic materials obtained from other species of organisms.
Generally, transgenic organisms are typically used in the following areas:
Agriculture growth.Biotechnology.In conclusion, we can infer and logically deduce that the modification of organisms through the use of transgenic organisms may contaminate the natural, wild populations.
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How the respiratory membrane works. What cell types and what forces allow the diffusion of gases across the respiratory membrane?
Acc6ording to the question:
When we breath; there is air in and out though out from our lungs. How could it happen. Oxygen and carbon dioxide moves across the respiratory membrane. Normally the membrane separating air within the alveoli from the blood within pulmonary capillaries and consists of the alveolar wall, the capillary wall, and their basement membranes. Respiratory membrane is very thin, somehow its is approximate less than 0.5 mm. Explain?The respiratory membrane includes millions of alveoli with a surface area, the large respiratory surface area, combined with other factors, makes for efficient gas exchange to meet our metabolic needs.
Respiratory membrane allows gases to be exchanged between the pulmonary capillaries, or blood vessels, and the respiratory units of the lungs, which consist of bronchioles, alveolar ducts, atria and alveoli.
Since respiratory membrane is very thin,it consists of only two cells, one is the alveolar epithelial cell and the other is pulmonary capillary cell.Gas exchange occurs in the lungs between the air and our blood.
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What is cell division
Explanation:
division of a cell into two daughter cells with the same genetic material.
Answer:
Cell division, also referred to as mitosis, is the process in which a cell splits into 2 daughter cells, then repeats the process.
Which energy conversion occurs during the operation of a voltaic cell.
Which characteristic of bacteria makes them efficient transgenic organisms to produce insulin or other medicines?
A.They tolerate a wide range of environments.
B.They reproduce extremely quickly.
C.They have a short life expectancy.
D.They readily accept new genetic material.
The characteristic of bacteria that makes them efficient transgenic organisms to produce insulin or other medicines is they readily accept new genetic material.
What do you mean by Transgenic organisms?Transgenic organisms may be defined as an organism whose genome has been modified by the insertion of one or more foreign (non-self) DNA sequences from another species via artificial means.
A Plasmid is a circular DNA that assists in the insertion of foreign DNA sequences into the bacterial cell.
Therefore, the characteristic of bacteria that makes them efficient transgenic organisms to produce insulin or other medicines is they readily accept new genetic material.
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I need help with number 1 and 2
How do corals get food?
From the Krusty Krab
Zooxanthellae only
Filter-feeding only
Filter-feeding and zooxanthellae
Answer:
Zooxanthellae only
Explanation:
Zooxanthellae is a colloquial term for single-celled dinoflagellates that are able to live in symbiosis with diverse marine invertebrates including demosponges, corals, jellyfish, and nudibranchs.
What type of environment was coal formed in?
Answer:
Swampy Forests
Explanation:
Coal contains the energy stored by plants that lived hundreds of millions of years ago in swampy forests. Layers of dirt and rock covered the plants over millions of years. The resulting pressure and heat turned the plants into the substance we call coal.
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The Punnett square above shows a cross between an animal that is heterozygous for the dominant trait of having horns and an animal that is homozygous recessive and has no horns. What percentage of the offspring from this cross will have horns?
The percentage of offspring from a cross between an animal that is heterozygous for the dominant trait of having horns and an animal that is homozygous recessive and has no horns is 50%.
What is a punnet square?A punnet square is a graphical representation used to determine the probability of an offspring expressing a particular genotype.
According to this question, an animal that is heterozygous for the dominant trait of having horns (Hh) is crossed with an animal that is homozygous recessive and has no horns (hh).
The offsprings of this cross is as follows:
Hh - hornedHh - hornedhh - hornlesshh - hornlessTherefore, the percentage of offspring from a cross between an animal that is heterozygous for the dominant trait of having horns and an animal that is homozygous recessive and has no horns is 50%.
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Dynamite combustion is an example of an exergonic reaction
Answer:
glow stick is an example of an exergonic reaction, which produces visible light. off in a reaction is primarily in the form of heat, the reaction is called an exothermic reaction. and the explosion of dynamite are exothermic reactions. energy to break bonds than is released when new ones are formed
Organisms in an ecosystem compete only for food. A. True B. False
Answer:
False
Explanation:
Organisms compete for many things in an ecosystem not just food
Cellular respiration and photosynthesis are similar in that both require a. carbon dioxide molecules b. energy-carrier molecules c. glucose molecules d. oxygen molecules
Cellular respiration and photosynthesis are similar in that both require energy-carrier molecules. The correct option is b.
What are energy-carrier molecules?The energy transport molecule found in cells in the highest concentration is adenosine 5'-triphosphate, or ATP.
Three phosphate groups, an adenine nitrogen base, and a ribose sugar make up this molecule. The compound adenine plus ribose sugar is referred known as adenosine.
During cellular respiration, glucose is produced using NADH and ATP. Both an enzyme and a channel protein, ATP synthase serves two functions.
ATP molecules include the carbon atoms from glucose after the conclusion of cellular respiration.
During the process of photosynthesis, two molecules that carry energy are actually present. NADPH and ATP are the two molecules that carry energy.
Thus, the correct option is B.
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If red blood cells are placed in distilled water and examined under a microscope no cells are seen. Explain why no red blood cells would be seen.
Answer:
Explanation:
Distilled water has no contaminants and minerals thus the solute concentration inside the RBC is more than water. Water moves towards high solute concentration, therefore, water will go inside the RBC and burst it. This is why no RBC will be seen. You could see remanants of burst open and defective RBC but healthly RBC wont be there.
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it is the most specific level of classification
Pepsin, a digestive enzyme that degrades proteins in the stomach, is synthesized as pepsinogen and converted to active pepsin in the stomach by the re
Digestive enzymes help to break down food in its simplest form. Pepsin is a digestive enzyme which leads to the degradation of proteins in the stomach. It is produced as pepsinogen and converted to active pepsin in the stomach by the removal of several amino acids.
What is pepsin?Pepsin is a digestive enzyme which is present mainly in the gastric juice in stomach and helps to breakdown protein into peptides.
This pepsin is present in the stomach in the form of inactive pepsinogen. This pepsinogen gets active in the stomach by the action of hydrochloric acid.
Pepsinogen gets active and forms pepsin.
Thus, it can be concluded that the digestive enzyme pepsin degrades protein in stomach and is synthesized as pepsinogen and gets converted into active pepsin in stomach by removal of several amino acids.
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Question:
Why are viruses considered nonliving but bacteria are considered living? Give two reasons.
Response:
Viruses
[ Select ]
reproduce outside of a host and
[ Select ]
made of cells.
Bacteria
[ Select ]
reproduce on their own and
[ Select ]
made of cells.
So
viruses are not considered as living
What are ways that a young plant differs from a parent plant
Answer:
their size
Explanation:
The most distinct difference between a baby plant and an adult plant is their size. They look very similar but baby plants are much smaller, like a miniature version.
Suppose a population of 5000 humans were sent to live on Mars. If the humans on Mars
and the humans on Earth are separated for 500 years, will they start to evolve
dierendy? they come back into contact with each other 1.000 years later, is it
made they could have become different species? Explain (Must be 6+ sentences)
Answer:
Yes, this is plenty of time for the humans in Mars to revolve differently. Due to Mars having different features (plants, air quality, etc) the people on Mars may develop differently to aid them in living on a different planet. They may develop a different variation of lungs to help them breathe better. Another possibility is a development that allows them to store water linger due to possible lack of water. In this span of time, humans on Mars may have begun developing these difference tools. As a result, in many years after the humans on Mars could almost be completely unrecognizable to the humans on Earth.
