Answer:
The genetic variation that occurs in a population because of mutation is random — but selection acts on that variation in a very non-random way: genetic variants that aid survival and reproduction are much more likely to become common than variants that don't. Natural selection is NOT random!
Explanation:
PLEASE HURRY GIVING BRAINLIEST ANSWER IF CORRECT: When you are running, which body systems are you predominately using?
O
A. Respiratory and Reproductive
O B. Skeletal and Muscular
C. Digestive and Excretory
OD. Immune and Cardiovascular
Answer:
A
Explanation:
hold up why is reproductive with repiratorjiuvhov?? then its probably B
Glycolysis is the first step in cellular respiration. Which option best summarizes the process?
A. aerobic; 6-carbon glucose forms four 3-carbon pyruvates; forms a net total of 3 ATP
B. anaerobic; 6-carbon glucose forms two 3-carbon pyruvates; forms a net total of 2 ATP
C. aerobic; 6-carbon glucose forms three 2-carbon pyruvates; forms a net total of 2 ATP
D. anaerobic; 6-carbon glucose forms two 3-carbon pyruvates; forms a net total of 4 ATP
Glycolysis is anaerobic and it involves 6-carbon glucose forming two 3-carbon pyruvate and a net production of 2 ATP.
WHAT IS GLYCOLYSIS?
Glycolysis is the first step of cellular respiration in all living organisms. It involves the breaking down of glucose molecule to form pyruvate molecules and 2 ATP molecules. Glycolysis is an anaerobic process, hence, it does not require oxygen to occur. This is why every living organism can undergo glycolysis.In summary of the process of glycolysis, it is an anaerobic process involving the formation of 3-carbon pyruvate from 6-carbon glucose and a net production of 2 ATP molecules.
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Do you think populations stay in genetic equilibrium after the environment has
changed significantly?
Answer:
Do you think populations stay in genetic equilibrium after the environment has changed significantly? ... It is likely because after the population changes, it is sufficient for its environment and does not need to go through change.
Explanation:
what structure is used by ribosomes as the instructions for making proteins ?
which function do skin stem cell perform
Answer:
Bulge
Telogen
Catagen
Explanation:
Stem cells (SCs) residing in the epidermis and hair follicle ensure the maintenance of adult skin homeostasis and hair regeneration, but they also participate in the repair of the epidermis after injuries.
Maybe a picture would help:
I hope this was helpful!
Answer:
Replacing lost skin cells
Explanation:
Cellular respiration
Cellular respiration is a set of metabolic reactions and processes that take place in the cells of organisms to convert chemical energy from oxygen molecules or nutrients into adenosine triphosphate (ATP), and then release waste products.
What types of erosion help create V-shaped valleys?
why do I exist? (IMPORTANT ANSWER NOW)
I exist because I am lucky that I exist. tricky question have a nice day:)
Which genes are turned on or off In a nerve cell?
A cell membrane is more flexible than a brick wall. Why might many cells benefit from a flexible cell membrane? and A building has different types of openings, such as windows and doors. Do you think a cell also has different types of openings? Give an explanation for your answer. I NEED HELP NOW I HAVE TO SUBMIT
Answer:
plant: This Elodea leaf cell exemplifies a typical plant cell. It has a nucleus, and a stiff cell wall which gives the cell its box-like shape. The numerous green chloroplasts allow the cell to make its own food (by photosynthesis).
The central vacuole takes up most of the volume of the cell. It is transparent, but you can see where it's pressing the chloroplasts up against the cell wall, especially at the ends of the cell.
Like animal cells, the cytoplasm of this plant cell is bordered by a cell membrane. The membrane is so thin and transparent that you can't see it, but it is pressed against the inside of the cell wall.
animal :This human cheek cell is a good example of a typical animal cell. It has a prominent nucleus and a flexible cell membrane which gives the cell its irregular, soft-looking shape.
Like most eukaryotic cells, this cell is very large compared to prokaryotic cells. For scale, notice the pair of dark blue bacteria cells sticking to the right edge of the cheek cell. The bacteria are only a fraction of the size of the nucleus, but their tiny size is typical for bacteria.
A cell membrane's flexibility aids in the selective passage of substances across it. Endocytosis, a mechanism that enables amoeba to take in food particles from the environment, is made possible by the flexibility of the membrane.
What make cell membrane to be flexible?The majority of natural phospholipids' fatty acids include one or more double bonds, which cause the hydrocarbon chains to twist and are challenging to pack together.
The interior of the membrane can displace freely due to the prolonged hydrocarbon chains of the fatty acids, getting the membrane itself negotiable and supple.
Key fatty acids include arachidonic and docosahexaenoic acids. Due to its four double bonds, arachidonic acid's proportion in phospholipid tails can be slightly increased to improve membrane flexibility.
Therefore, cell flexibility is important for cell to function.
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What alternate form of genes do nucleic acids have that allows them to offer variability? allele codon nucleotide chromosome
Answer:A-Allele
Explanation:
just took the quiz
The alternate form of gene that nucleic acids have that allows them to offer variability is the allele that is present in the first option, and there are more than two alleles present for one gene.
What is the gene?The gene is the message that is present in the DNA, and the gene of the prokaryotes contains very few introns, while the gene of the eukaryotes contains many introns, and the genes only express their exon parts, not the introns. In most cases, the gene has two alleles, and depending on the alleles' presence on the homologous chromosomes, the character is expressed. Some genes that have more than two alleles are called multiallelic genes, and they show the combined effects of their alleles.
Hence, the alternate form of gene that nucleic acids have that allows them to offer variability is the allele that is present in the first option.
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What protein does this DNA code for?
Svetlana learned that there are organisms that live deep in the ocean that produce food using energy stored in chemicals.
What process do these organisms most likely use to produce food?
Answer:
chemosynthesis
Explanation:
the synthesis of organic compounds by bacteria or other living organisms using energy derived from reactions involving inorganic chemicals, typically in the absence of sunlight.
There are two various ways by which organisms produce food. This is through photosynthesis which is utilized by plants and chemosynthesis which is utilized by some other organisms.
The process by which organisms that live deep in the ocean produce food using energy stored in chemicals is through chemosynthesis.
Organisms that live deep in the ocean are unable to access sunlight to enable them produce their food so they use the process of chemosynthesis.Chemosynthesis is utilized by some bacteria. They do this by using chemicals in the place of sunlight unlike photosynthesis as a source of energy to produce food (glucose). It involves the conversion of one or more carbon-containing molecules (e.g methane) into organic matter using the oxidation of inorganic chemicals.Learn more: https://brainly.com/question/15115717
When both alleles are equally strong and both visible, it is called ___________.
Answer:
Codominance
Explanation:
You're welcome!
codominance.
it happens when two heterozygous alleles are strong enough in the phenotype a being.
Write a short note on the activities that cause Air pollution.?
Explanation:
fumes from vehicles is the most common cause of air pollution
Answer:
The burning of fossil fuel
wildfires
transportation
burning of garbage
pollutants emitted from factories
carbon monoxide from factories
Agricultural Activities
Construction and demolition
the burning of wood
spray products
Explanation:
What is the term for the photopigment present in rod cells?
Answer:
Rhodopsin is the photopigment in rods.
Which is a cofactor?
A. NAD
B. H2O
C. ATP
D. CO2
Answer:
Atp
Explanation:
Which of these weather events can be
worsened by global warming?
a bird is flying 10 miles per hours east is it speed velocity or acceleration?
a car is travelling at 50 mph, then slowe down to 20 mps. speed, velocity, or acceleration?
thanks!
(extra)
A duck is swimming at 2 feet per second. speed, velocity or acceraleration?
Explanation:
Speed is the distance traveled per unit of time.
Velocity is the displacement divide by time. It is speed reported with a specific direction. Velocity is a vector quantity.
Acceleration is the rate of change of velocity with time.
A bird is flying 10 miles per hours east is it speed velocity or acceleration?
Velocity
a car is travelling at 50 mph, then slowed down to 20 mps. speed, velocity, or acceleration?
Acceleration
A duck is swimming at 2 feet per second.
Speed
18. Dr. Milosz electrically stimulates the lateral hypothalamus of a well-fed laboratory rat. This procedure is likely to
A) cause the rat to begin eating.
B) decrease the rat's basal metabolic rate.
C) facilitate conversion of the rat's blood glucose to fat.
D) permanently lower the rat's set point.
E) increase the incentives for food but decrease motivation to eat.
According to the cell theory, which statement is correct?
Answer:
According to the cell theory all organisms (unicellular or multicellular) are formed of cells. It also states that all cells arise from pre-existing cells by cell division and do not originate spontaneously. Bacteria and other organisms therefore cannot arise spontaneously.
Explanation:
hope this is correct
i feel like its b or a
As per the cell theory, the correct statement is that cell arises from pre-existing cells. The correct option is D.
What is cell theory?Cell theory is a biological theory first proposed in the mid-nineteenth century that states that living organisms are made up of cells, that cells are the basic systemic unit of all life forms, and that all cells originate from pre-existing cells.
The cell theory is significant because it explains the concept of cell and includes the following postulates:
The cell is the basic component of life. All cells develop from pre-existing ones. Cells are the building blocks of all living organisms on Earth.According to the unified cell theory, all living things are made up of one or more cells; the cell is the basic unit of life.
Thus, the correct option is D.
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Your question seems incomplete, the missing options are:
A) Viruses are true cells.
B) Cells are basically unlike in structure.
C) Mitochondria are found only in plant cells.
D) Cells come from preexisting cells.
What is the scientific name for the wildflower plant?
Answer:
There is no scientific name.
Explanation:
Wildflowers are a group of flowers that are common in the wild. It is not a specific species, so it does not have a scientific name. Did you mean to insert an image to show a certain species of wildflower?
The arrows on either side of the fault represent the relative movement of the
two tectonic plates. What type of boundary is represented in the diagram?
a)subduction
b)convergent
c)divergent
d)transform
Answer:
D
Explanation:
The arrows on either side of the fault represent the relative movement of the two tectonic plates. The type of boundary is represented in the diagram is convergent. Thus, option B is correct.
What is tectonic plates?
Earth’s tectonic plates are part of the planet’s crust which correctly describes Earth’s tectonic plates. Huge fragments of the upper mantle and crust make form tectonic plates. Both continental and oceanic crust make up their composition. Mid-ocean ridges and the significant faults that delineate the plate boundaries are subject to earthquake activity.
Our globe would look drastically different if it weren't for plate tectonics. We have a stable climate, mineral and oil deposits, and oceans with a chemical balance that supports life thanks to the continuous recycling of the Earth's crust.
The tectonic plates, which have a thickness of about 100 km, are made up of this crustal layer of the globe. These plates, which continue to float on the warm and thick mantle, collided to create the mountains.
Therefore, The arrows on either side of the fault represent the relative movement of the two tectonic plates. The type of boundary is represented in the diagram is convergent. Thus, option B is correct.
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What are disadvantages of sexual reproduction?
Choose the best answer.
1) Using a compound microscope, a person can view the specimen on stage magnified up to ____ times.
A. 1,000
B. 50
C. 100
D. 10
E. 10,000
2) Choose the best answer.
What is the magnification range for an electron microscope?
A. 1,000 times
B. 2,000 times
C. 200 times
D. 100 times
E. 100,000 times
Answer:
1)10,000 times
2)100,000 times
What is the best explanation for species diversifying to fill each new niche? A. The plants chose the niche that they "liked" best. B. Ln each niche, the fittest plants were able to leave more offspring than other plants. C. Successive generations of plants adapted to each new niche. D. Only some plants could get nutrients from the soils.
Answer:
C. Successive generations of plants adapted to each new niche.
Explanation:
The process by which species with diverse ecological and morphological variations specialized for various niches arise from a common ancestor is known as adaptive radiation.
Due to variety in habitat and diet, species diversify in order to fill the various niches within the same environment. For example, in the Finches observed by Darwin in the Galapagos islands, adaptive radiation is seen in how their beaks have changed in size and structure so that they now became adapted to different diets. Some species eat mostly animals such as insects, whereas others became adapted to feeding on seeds or plants.
In the case of the plants, adaptive radiation would also play a role in how the species diversified to fill each new niche.
Answer: Succesive generations of plants adapted to each new linche
Explanation:
SOMEONE I NEED HELP!!!!!!!!!!!!
Describe how long your results provide evidence of variations within your classroom population
Answer:
sorry cant help u:((((((((
Answer:
can i see your classroom graph thing
Explanation:
Explain how plates move at a convergent plate boundary.
(Plz make it simple)
Answer:
At convergent plate boundaries, oceanic crust is forced down into the mantle where it begins to melt. Magma rises in and out the other plate and solidifies into granitewhich is the rock that makes up the continents. Thus, at convergent boundaries, continental crust is created and oceanic crust is destroyed.
would it be ideal if temperatures are often below freezing where you launch rockets?
Explanation:
And it should go without saying that you don't want to launch during a hurricane or tornado. If the rocket flies into a thunderstorm then it will attract lightning strikes. This was partly attributed to the low temperature weather, far lower than had been the case with previous launches: below freezing at 28.
Which among these is a biotic factor?
A) weather
B) water temperature
C) interactions between organisms
D) sunlight
Answer:
c
Explanation:
Please mark brainliest
Answer:
C
Explanation: