Answer:
Evolution is the adaptations of organisms to their changing to there environments to better there lives. The Evolutionary processes depend on both changes in genetic variability and changes in allele over time.
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Answer:
In areas of Africa where malaria is prevalent the number of sickle cell cases remains consistent generation after generation. ---- support the hypothesis.
In Canada the incident of sickle cell anemia has been increasing in the population. ----- contradicts the hypothesis.
Explanation:
In areas of Africa where malaria is widespread the number of sickle cell cases remains consistent generation after generation while on the other hand, In Canada the incident of sickle cell anemia are lower in the population because of environmental condition is not good for increase in malarial disease. In Africa, the environment is suitable for the mosquitoes that causes malaria so there is high increase of sickle cell anemia in the population.
i don't like school that's why I'm here
Answer:
brainly is like school though?? you have to answer people so i d k
Explanation:
Answer:
Same id rather fail than do school
Explanation:
Also how are u? <3
I hope you have a good day
During gene expression, RNA is transcribed and polypeptides are translated.
A. True
B. False
Answer:
False
Explanation:
What type of transport is illustrated in the diagram and what type of molecule would be transported
using this process?
A. Passive transport; carbohydrates
B. Active transport; oxygen
C. Exocytosis; proteins
D. Facilitated diffusion; sugars
How can charging occur?
The previous section of Lesson 2 discussed the process of charging an object by friction or rubbing. Friction charging is a very common method of charging an object. However, it is not the only process by which objects become charged. In this section of Lesson 2, the charging by induction method will be discussed. Induction charging is a method used to charge an object without actually touching the object to any other charged object.
Calculate the heat energy of 100 g of water that has its temperature increased by 10C . The specific heat of water is 4.18 J/gC
Answer:
4180 Joules
Explanation:
Multiply 100g by the 10c to get the amount of degrees heating the amount of grams, which is 1000.
Specific heat is how much energy it takes to heat 1 gram 1 degree celcius, which it took 1000 of.
1000* specific heat for water = Total heat energy
1000*4.18J=4180 J
It took 4180 Joules of energy to heat up 100g of water by 10 C
A pink-flowered plant is crossed with a white-flowered plant. What is the
probability of producing a pink-flowered plant? %
Earth Science anything helps
Answer:
The forest, maybe the atmosphereExplanation:
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A punnett square represents a cross that produces two plants with orange flowers. If the orange color of the flowers is a result of incomplete dominance, what color were the flowers on the parent plants?
Answer:
Red and yellow. Incomplete is a blending of traits.
Explanation:
The amount of life that can be supported in a particular ecosystem is limited by which of the following?
I. energy
II. water
III. minerals
IV. oxygen
A.
II and IV only
B.
I and II only
C.
I, II, III, and IV
D.
II, III, and IV only
40 POINTS AND BRAINLIEST PLS HELP After hearing about an oil spill, Natalia decides to investigate how oil may affect birds in aquatic ecosystems. She gets some bird feathers. She takes the mass of one, dips it in oil, then takes its mass again. The images show the bird's feather before and after being dipped in oil.
dry feather and feather-covered in oil
The table gives the mass of the feather before and after being dipped in oil.
Before Oil After Oil
Mass 1.1 g 4.5 g
Describe how the mass and the appearance of the feather changed because of the oil. Can Natalia clean off the feather using water? Predict what will happen if Natalia dips feathers covered in oil in either cold water or in hot water.
Answer:
the increase in mass might make itself unable to fly due to the weight of the oil . the oil also exposes it's sensitive skin. they become extremely soggy when dipped in water. the water takes over the oil and restricts movement of its feather
Explanation:
pls giv me brainliest
When the feather is covered with oil, it causes an increase in the mass and makes them unable to fly. Yes, Natalia can clean off the feather using water. As she will dip the feather in water it can clean the feather but also remove the natural waterproofing.
What is an oil spill?Accidentally pouring a large amount of oil onto the large water body surface is referred to as an oil spill.
As due to this, the bird feather will get into the oil and increases its mass and the appearance as it cause them to become mat and separate.
Natalia can clean the feather using water.
When she will put the feathers covered with oil in either cold or hot water will cause the removal of natural waterproofing of the feather.
Thus, these were the consequences according to the given scenario.
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What do prokaryotes lack that are in eukaryote cells?
Answer: Prokaryotic cells differ from eukaryotic cells in that they lack any membrane-bound organelles, including a nucleus. Instead, prokaryotic cells simply have an outer plasma membrane, DNA nucleoid structure, and ribosomes.
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using Punnett Squares, determine the percentage of offspring which would be heterozygous from the following cross: BB x bb
A. 25%
B. 50%
C. 100%
Lets take that the father has black hair and the mother has brown hair so -->
Male × Female
Genotypes: BB × bb
Phenotypes: Black brown
Gametes: B _100%_ b_100%_
After reviewing the photo
we have
Genotypes
B: 50% (1/2)
b: 50% (1/2)
Phenotypes
Black: 50% (1/2)
brown: 50% (1/2)
Using Punnett Squares, the percentage of offspring would be heterozygous from the following cross: BB x bb is 25%. Therefore, option (A) is correct.
What are the features of punnett square method?The Punnett square is a square diagram that is used to predict the genotypes of a particular cross or breeding experiment. It is named after Reginald C. Punnett, who devised the approach in 1905.
The Punnett square is a table in which all of the possible outcomes for a genetic cross between two individuals with known genotypes are given. In its simplest form, the Punnett square consists of a square divided into four quadrants.
A Punnett Square is a helpful tool that helps to predict the variations and probabilities that can come from cross breeding. This includes predicting crossing plants, animals, even humans with each other.
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Cells often need to take in materials from their environment which are
found in lower concentration outside the cell compared to inside the cell.
In order to do this, cells must use energy from ATP to move these materials
against the concentration gradient through active transport.
with the concentration gradient through active transport.
against the concentration gradient through passive transport.
with the concentration gradient through passive transport.
Answer:
With the concentration gradient through passive Transport
Explanation:
I haven't taken biology recently, but if I'm not mistaken, cells that use ATP can only passively do things.
Cells often need to take in materials from their environment which are with the concentrate gradient through passive transport. So the correct option is D.
What is passive transport?A kind of cellular transport known as passive transport involves the movement of molecules and ions along concentration gradients. It indicates that a drug has a propensity to migrate from a region of higher concentration to a region of lower concentration.
When there are few substances anywhere, those substances tend to migrate there. Contrary to active transport, another kind of cellular transport, which fundamentally requires ATP to move substances against their concentration gradient, the method does not involve metabolic energy (e.g. ATP) since the chemicals are moved downwards or along their concentration gradient. The four main methods of passive transport are osmosis, filtration, simple diffusion, and assisted diffusion.
When a drug is transported passively, it is moved from an area of higher concentration to one of lower concentration. As a result, chemicals migrate along a gradient of concentration.
Therefore the correct option is D.
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Explain why a leaf kept in the light for 24 hours will turn an iodine solution blue-black, whereas a leaf kept in light for 24 hours and then in the dark for 24 hours will have no effect on an iodine solution
Answer:
The leaf kept in the light will turn blue-black because of the presence of starch after photosynthesizing. The leaf in the dark could not photosynthesize, which would not create starch so the iodine solution will have no effect.
Explanation:
Iodine stains a blue black in the presence of starch
Please answer questions for the brainliest.. and stars..
Answer:
Cool air forms denser clouds, and when the clouds from the side of the mountain with cool air try to go to the side of the mountain with warm air, the clouds warm up and dissipate.
Give three ways in which plants use the glucose made in photosynthesis.
Thanks
Answer: Energy source. Glucose can used as a substrate and broken down in plant cells by the process of respiration.
Plant energy storage. Thousands of glucose molecules can be linked together to form the complex carbohydrate starch.
Plant building material.
Explanation:
The three ways in which plants use the glucose made in photosynthesis are as follows:
Energy storage.Plant building material.Energy source.What is Photosynthesis?Photosynthesis may be defined as the process through which green plants and some algae synthesize their own food (glucose) with the help of carbon dioxide and water in the presence of sunlight.
Starch is stored in the plants that is a derivative of glucose. It can provide energy to the plants when environmental conditions are unfavorable to synthesize glucose.
Cellulose is another derivative of glucose which utilize in the building of plant cell walls to protect plants from the external environment.
Glucose directly provides energy to the plant cell for the fulfillment of metabolic activities like respiration, protein synthesis, cell division, etc.
Therefore, it is well described above.
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Consider the following statements:
1. Mutations always have a negative effect on an individual.
II. Mutations can have a positive effect on an individual.
III. Murations can have no effect on an individual.
IV. Mutations can have a negative effect on an individual.
Which of the statements above is/are true?
Answer: II, III, and IV
Explanation:
The answer is the second, third, and fourth.
The second one is true, because some mutations can help us adapt to our surroundings.
The third one is true, because some mutations such as some point mutations won't affect the proteins that are synthesized.
The fifth one is true, because some mutations are lethal.
Can some one help me :(.
Answer:
have a good day, hope this helps :)
Explanation:
hi! just saying that if you look up your question, this answer pops up: Aprocess called pollination...
Penguin wings and swallow wings are _____ structures.
A compound
B analogous
C vestigial
D homologous
Answer: Analagous
They are different anatomically but perform similar functions.
The function of the large intestine is to....
A. send bile to the small intestine
B. digest protein
C. reabsorb water from waste
D. store food
Answer: the answer should be C
Explanation:
Which of the following sequence shows the correct order from the smallest to the largest?
Gene-Cell-Nucleus-Chromosome-DNANucleotide
NucleotideGeneDNAChromosome NucleusCell
CellNucleusDNANucleotideChromosomeGene
CellNucleusChromosomeDNAGeneNucleotide
Answer:
Nucleotide, Gene, DNA, Chromosome, Cell.
Explanation:
Effectors may show stimulatory or inhibitory activity. Binding one subunit impacts binding of substrate to other subunits. ALL are correct. The enzyme can have multiple subunits. The regulatory effect is by altering conformation and interaction of subunits.
Answer: Hello your question is poorly written below is the well written question
All are characteristic of allosteric enzymes except:
a. effectors may show stimulatory or inhibitory activity
b. they have multiple subunits
c. they obey Michaels-Menten kinetics
d. the regulatory effect is by altering conformation and interation of subunits
e. binding one subunit impacts binding of substrate to other units.
Answer : They Obey Michaels-Menten kinetics ( c )
Explanation:
Allosteric enzymes are enzymes that posses the presence of an additional site and an active site. they are modified by a noncovalent binding an allosteric effector. They do not posses a kmvalue hence they do not obey Michaels-Menten kinetics
Blood pressure decreases below normal levels. Blood flow to the heart decreases. Heart is unable to pump as much blood. Blood pressure decreases even more. This is an example of _____ feedback. Multiple choice question.
Answer:
its called systolic heart faliure or heart faliure with reduced ejection fraction
How does mutation lead to evolution?
Answer: Mutation plays an important role in evolution. ... Mutation is important as the first step of evolution because it creates a new DNA sequence for a particular gene, creating a new allele. Recombination also can create a new DNA sequence (a new allele) for a specific gene through intragenic recombination.
Explanation:
Los glúcidos más sencillos son los aminoácidos verdadero o falso
Answer: Falso
Explanation: es falso porque monosacáridos son los mas sencillos
can someone please help me please. i need to raise my grade for this class and today is the last day.
Answer:
yes I will help
Explanation:
yes I will help you
Answer:
Pathogen #2
Explanation:
The immune system RESPONDS to pathogens by creating an antibody, and if you look closely at the shape of the pathogen compared to the antibody, it makes most sense that it would be created in response to this one.
Why do most living thing not leave fossils behind
Answer:
Explanation:
I believe why most living things do not leave fossils behind is most likely because they are decomposed before the fossils are covered by grouts and a predator might've eat them. The fossils are created when a plant or animal dies in a liquid environment and is covered by dirt.
Inertia best describes...
a. why objects at rest remain at rest
b. why objects moving at a constant velocity continue moving at a constant velocity
c. both A and B
Answer:
c a letter c
Explanation:
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Insectivorous plants use insect proteins as a source of what to synthesize it's own proteins.
Answer:
Food
Explanation: