Answer:
Explanation:
Cell membranes act as barriers to most, but not all, molecules. Development of a cell membrane that could allow some materials to pass while constraining the movement of other molecules was a major step in the evolution of the cell. Cell membranes are differentially (or semi-) permeable barriers separating the inner cellular environment from the outer cellular (or external) environment.
Water potential is the tendency of water to move from an area of higher concentration to one of lower concentration. Energy exists in two forms: potential and kinetic. Water molecules move according to differences in potential energy between where they are and where they are going. Gravity and pressure are two enabling forces for this movement. These forces also operate in the hydrologic (water) cycle. Remember in the hydrologic cycle that water runs downhill (likewise it falls from the sky, to get into the sky it must be acted on by the sun and evaporated, thus needing energy input to power the cycle).
Polygenic Inheritance is when traits are controlled by two or more genes. True False
Occasionally a new resistant strain of pathogen appears. The new strain may spread rapidly. Explain why
Answer:
Antibiotics are not effective for new strains and so new resistant pathogens survive and reproduce, which leads to the increasing population of resistant pathogens and spread rapidly.
Bacteria can evolve and adapt themselves quickly as they are able to reproduce at a fast rate. Mutations of bacteria produce new strains that are resistant to certain antibiotics, such as penicillin, and cannot be destroyed by the antibiotic so they spread more rapidly.
The heartbeat rate of an athlete during resting is lower than a non-athlete.
Explain why. [ 2 marks ]
Answer: The heart muscle of conditioned athletes enlarges and strengthens.
Increased cardiovascular fitness causes real physical changes in the structure of the heart. The muscles in the heart wall thicken, and the heart pumps more blood with each beat. That increased efficiency means an athlete's resting heart rate falls to a level that could indicate trouble in a nonathlete. Many athletes don't realize that high levels of conditioning also cause heart symptoms that doctors might mistake for serious problems.
biogeography evidence for evolution definition
use your own words
The answers to these questions ?
Answer:
1. Lactose, H2O, and lactase.
2. Galactose and glucose.
3. You converted lactose, H2O, and lactase into galactose and glucose.
Explanation:
I don't know about the last one so I would do that one yourself because we can't see what the reaction was from.
Why scientific naming is necessary?
Answer:
The correct answer would be - to communicate unambiguously globally.
Explanation:
In different locations on the earth or countries, there are thousands of languages present, and each language has a name for the different species or different organisms that leads to confusion and tough to take the record.
Therefore, there is a two-part scientific name system proposed for every species first name for the genus and second part for the species, it is called "binomial nomenclature." It helps and allows to communicate unambiguously about the species of different organisms globally.
The cell membrane is a responsible for maintaining ___, a stable internal environment
Answer: Homeostasis is the cell membrane is a responsible for maintaining a stable internal environment
HELP!!!!!!!!!!!!!! And go check out my other questions
PLEASE HELP!
Caitlin created a model of balanced forces using the following steps:
1. She found a rope and asked two friends to help her.
2. She placed each friend at opposite ends of the rope.
3. Each friend pulled on the rope using different strengths of force.
4. The rope did not move.
Which statement describes how Caitlin could correct the steps in her model?
A. She should to use a push force to demonstrate balanced forces on an object.
B. She should have placed both friends at one end of the rope.
C. Each friend should use the same force to pull on the rope.
D. To model balanced forces, the rope should move around.
Answer:
i think it would be c
Explanation:
PLEASE HELP BEING TIMED Which is one piece of information that fossils in samples from Earth's crust reveal about Earth's history?
A. Changes in climate
B. Number if species at the specific time
C. Composition of Earth's core
D. Age of organisms when they died
Answer: changes in climate
Change in climate information that fossils in samples from Earth's crust reveal about Earth's history. So, the correct option is (A).
What are Fossils?A fossil is defined as the preserved remains, impression, or trace of a once-living thing from a past geological age, including bones, shells, exoskeletons, fossilized traces of animals or microbes, amber, hair, petrified wood, and DNA. The totality of fossils is known as the fossil record.
There are five types of fossils which are as follows:
Body FossilsMolecular FossilsTrace FossilsCarbon FossilsPseudo fossilsThe fossil record shows that the types of living things on Earth changed over time which reveals the Earth's history.
Thus, change in climate information that fossils in samples from Earth's crust reveal about Earth's history. So, the correct option is (A).
Learn more about Fossils, here:
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What factor drives surface ocean currents
Solar energy
Explanation:
Large-scale surface ocean currents are driven by global wind systems that are fueled by energy of the sun. :)
True or false All protist are single -celled
Answer:
False, Most protist are single-celled but there are some protist that are multicellular.
Explanation:
Answer:
false
Explanation:
beacause most of them are singel celled not all of them.
Question 6 of 10
What are the characteristics of a flash flood? Select the three correct
answers.
O A. Occurs quickly
B. Occurs only during a thunderstorm
O C. Lasts a short time
D. Has a large volume of water
Answer: A, C, D
Explanation:
Give brainliest please!
How may mRNA be modified before it leaves the nucleus?
Answer:
The pre-mRNA molecules undergo three main modifications. These modifications are 5' capping 3' polyadenylation and RNA splicing which occur in the nucleus before RNA is translated.
Explanation:
mRNA compares to the hereditary succession of quality, and is perused by a ribosome during the time spent combining a protein.
How mRNA can be modified?it should go through extra handling before it leaves the core. This might incorporate joining, altering, and polyadenylation. These cycles adjust the mRNA in different ways. Such alterations permit a solitary quality to be utilized to make more than one protein. Exons are segments of mRNA which become "communicated" or converted into a protein. They are the coding bits of a mRNA atom.
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_______________ is the name for the process of clearing natural vegetation and replacing it with concrete and buildings.
The practice of removing natural vegetation and replacing it with concrete and structures is known as urbanization. This is the correct answer to fill in the blank.
What are the primary factors causing urbanization?Industrialization, commercialization, rural-urban migration, lifestyle changes, career opportunities, social advantages, etc. are the primary reasons of urbanization. The process of urbanization is when people move from rural to urban areas for a variety of reasons.
What results did urbanization produce?Urban areas can expand due to a rise in the population or because people move there. Urbanization frequently causes habitat loss, deforestation, and freshwater extraction from the environment, which can reduce biodiversity and change species ranges and interactions.
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Help!! does anyone know the answer??
Answer:
i think its osmosis
Explanation:
A)
Glassy sweeper and squirrelfish
B)
Glasseye snapper and spotted eagle ray
C)
Spotted goatfish and bandtail puffer
D)
Peacock flounder and glassy sweeper
Answer:
A) Glassy sweeper and squirrelfish
Explanation:
what would most likely indicate that
there are microscopic animals present in pond water
Answer:
Some of the organisms that can be found in pond water include:
Arthropods.Bacteria.Protozoa.Hydras.Algae.In a heterozygous genotype, the ___________ allele takes over in the phenotype.
Answer: dominant
Explanation:
Cross two heterozygous black mice and tell the possible phenotypes and
genotypes in their offspring.
Answer:
Phenotype: 3 black mice: 1 brown mice
Genotype: 1 BB: 2Bb: 1bb
Explanation:
This question involves a single gene coding for fur color in mice. The allele for black color (B) is dominant over the allele for brown mice (b). This means that a mouse that is heterozygous will be black.
If two heterozygous black parents are crossed i.e Bb × Bb, the gametes produced by each parent are: B and b. Using these gametes in a punnet square (see attached image), the following offsprings will be produced:
BB, Bb, Bb, and bb
- The phenotypes of this cross is 3 black mice: 1 brown mice
- The genotypes of the cross is 1 BB: 2Bb: 1bb
What is the function of the nucleus in plant and animal cells? A. Produces all the power of the cell B. Creates proteins within the cell C. Control all cells activity, contains DNA D. Allows things in an out of the cell
Answer:
A. Produces all the power of the cell
Explanation:
Nucleus is the power house of the cell
PLZ MARK BRAINLIEST
Answer:
C
Explanation:
b/c the nucleus of the cell contains the information needed to build a whole new animal, plant, bacterium or fungus.
Im not sure if anyone knows this or not.
Can someone please help me with 1 and 2! If u r correct ill mark u was the best answer
I'm pretty sure the answer to 1 is A, but I know for a fact that soil contains microorganisms and microbes.
The answer to question 2 is D (Porosity)
if a blue eyed offspring is formed from black eyes parents, what type of character is the blue eye dominant or recessive? expalin with the help of a chart
Answer:
Blue Eyes Are: Recessive
Explanation:
The brown eye form of the eye colour gene (or allele) is dominant, whereas the blue eye allele is recessive. If both parents have brown eyes yet carry the allele for blue eyes, a quarter of the children will have blue eyes, and three quarters will have brown eyes. I hope this helps :) Good luck on your assignment!!!
How would warmer water effect the feeding patterns of salmon
(T_T)(T_T)(T_T)(T_T)(T_T)(T_T)(T_T)
Answer:
The water will move quickly
Explanation:
(Giving brainliest!!)
Explain why the sun appears to be the brightest star in the sky. Relate your explanation with an example, such as streetlights
Answer:
when you look a streetlight from far it will be some how not bright. the other stars are far from planet earth . but the sun is near
Explanation:
Replicate the following DNA sequence: CCC
Answer:
GGG
Explanation:
use AT GC
opposite of C is G and since there's 3 c's you replicate and get 3 g's
Hello, if anyone sees this, can you answer this question for me?
Each cell, expresses, or turns on, only a fraction of it's genes. The rest of the genes are repressed, or turned off. The process of turning genes on and off is known as, Gene Regulation. Gene regulation can occur at any point during gene expression, but most commonly occurs at the level of _____, when the information in a gene's DNA is transferred to RNA.
(A) Post Transcription
(B) Post Translation
(C) Transcription
(D) Translation
Answer:
C-transcription
Explanation:
Please help me it’s due today , there’s number 10 also
Answer:
1. Chloroplast
2. Photosynthesis
3. 6CO₂ + 6H₂O → C₆H₁₂O₆ + 6O₂
4. Sunlight
5. Glucose
6. Oxygen
7. Carbon Dioxide
8. Water
9. Energy
10. Mitochondrion
11. Cellular Respiration
12. C₆H₁₂O₆ + 6O₂ → 6CO₂ + 6H₂O
Answer:
1. Chloroplast
2.photosynthesis
3. 6 CO₂ (carbon dioxide) +12 H₂O (water) + light -->C6H12O6 (glucose/sugar) +6 O₂ (carbon dioxide) + 6 H₂O (water)
4. Light
5 and 6) Glucose (C₆H₁₂O₆) and O₂
7 and 8) CO₂ and Water (H₂O)
9) energy (ATP)
10) Mitochondria
11) Cellular respiration
12) I think you need the equation as well:
Explanation: C₆H₁₂O₆ (glucose) + 6O₂ (oxygen) --> 6CO₂ (Carbon Dioxide) + 6 H₂O (water) + ATP (energy)
1. Chloroplasts have thylokoids or stacked membranes like it has.
2. Photosynthesis is the process of converting light into usable energy.
3. That is the equation of photosynthesis. Their are different ways of writing this for example: 6 CO₂ + 6H₂O + light -->C₆H₁₂O₆ + 6 O₂ which is balancing the water. Check to see what your teacher used in the book/notes.
4. Light is required for photosynthesis and the sun is providing it.
5 and 6) The mitochondria uses both of these in its processes that were first made in photosynthesis.
7 and 8) Both are created by mitochondria and are used in chloroplasts.
9) Energy is produced in the mitochondria with help from the Chloroplast.
10) It is usually depicted with those lines in it.
11) That is the process's name.
12) This is the equation of cellular respiration.
How will the spectra lines recorded on Earth be shifted for a light- emitting object that is moving neither toward nor away from Earth? Choose the correct answer.
They will have redshift.
They will have blueshift .
They will have greenshift.
O They will not be shifted at all.
Answer:
Tendrán corrimiento al rojo.
Explanation:e sa e s