Answer:
Explanation:
Pesticide resistance, herbicide resistance, and antibiotic resistance are all examples of microevolution by natural selection. The enterococci bacteria, shown here, have evolved a resistance to several kinds of antibiotics.
Microevolution can be observed in different areas such as antibiotic resistance.
What is Microevolution?Microevolution is the change in the allele frequencies which occurs over a period of time within a population. This change in allele frequency in a population is due to four different processes including mutation, selection, gene flow and the genetic drift. This change in the population happens over a relatively short period of time as compared to the changes termed as macroevolution.
Microevolution can be seen in the bacteria for antibiotic resistance. Antibiotic resistance develops in a population due to changes or mutations at genetic level.
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What is photosynthesis
Answer:
The process of a plant converting sunlight, carbon dioxide and water into food
Explanation:
Hey there!
Photosynthesis is the reaction that converts light energy to chemical energy in sugar and carbohydrates. Humans can't eat sunlight, so we eat plants. Plants convert the energy in the sunlight into chemical energy using chlorophyll. Chlorophyll is a molecule produced by plants, algae, and cyanobacteria, which aids in the conversion of light energy into chemical bonds. It is the green pigment found in the chloroplasts of higher plants. They are a part of our ecosystem, and they are lower on the food chain.
Hope this helps!
Have a great day! :)
1. Cytoplasm
2. Nucleus
3. Chloroplasts
4. Cell Wall
5. Cell membrane
Which of the components could be observed using a microscope in a prepared slide of leaf
epidermal cells but not in a prepared slide of human cheek cells?
F Components 2 and 3 only
G Components 3 and 4 only
H Components 1, 2, and 3 only
J Components 1 and 5 only
Tadpoles use lungs to breathe Please select the best answer from the choices provided 0 T OF
Answer: False
Explanation: Tadpoles have gills and breathe with gills.
Answer: F
Explanation: Its creepy but they have gills. Little to none have lungs.
3- Blood group which has both types of antigens is......
A-A
B-O
C-AB
D-B
Answer:
C- AB
Explanation:
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:
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:
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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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 is a correct statement about insulin and glucose?
Through negative feedback, insulin produced by the pancreas causes a decrease in the amount of glucose in the blood.
Through negative feedback, insulin produced by the pancreas causes an increase in the amount of glucose in the blood.
Through positive feedback, insulin produced by the pancreas causes an increase in the amount of glucose in the blood.
Through positive feedback, insulin produced by the pancreas causes a decrease in the amount of glucose in the blood.
Answer:
Through negative feedback, insulin produced by the pancreas causes a decrease in the amount of glucose in the blood.
Explanation:
The control of blood sugar (glucose) by insulin is a good example of a negative feedback mechanism. When blood sugar rises, receptors in the body sense a change. In turn, the control center (pancreas) secretes insulin into the blood effectively lowering blood sugar levels.
The diagram below shows the carbon cycle. The light blue arrows represent the flow of carbon.
Through which of the following processes is carbon directly transferred between living organisms and the environment?
A. cellular respiration and the combustion of oil and coal
B. photosynthesis and the sedimentation of natural resources
C. photosynthesis and the erosion of limestone
D. cellular respiration and decomposition
Answer:
photosynthesis and the erosion of limestone
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
A cube is measured and has all sides that are 2 cm long. What is the
VOLUME for this cube?
8
24
3
Answer:
ans is 8..
Explanation:
We know cube has 6 sides..
[tex] \sqrt{6} = 3[/tex]
Then we get that ..
Volume of a cube is s³..
=> side =2cm
=> V = 2³
= 8
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.
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
A pink-flowered plant is crossed with a white-flowered plant. What is the
probability of producing a pink-flowered plant? %
When a rainbow appears in the sky, it is because light from the visible spectrum passed through water vapor and slowed down, causing the colors in the visible spectrum to break apart. true or false
Answer:
False
Explanation:
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
hellllllllllllllppppppppppppp
Explanation:
5. The larger the cell, the harder it is to get nutrients and gases to move in and out of the cell.
6.Small
7.Small, as they have a higher surface area to volume ratio which allows them to rely on oxygen and material diffusing into the cell to survive.
8.Prokaryotic cells have internal folding of cell membrane which is responsible for certain functions like respiration.
And in Eukaryotic are compartmentalised which is a method to increase surface area.
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.
A medium is matter through
which waves can pass. Which of
these waves must pass through a
medium to travel?
A
a light wave
B
a sound wave
Answer:B
Explanation:
Which of the following adds to the greenhouse effect and global warming?
Answer:
The gases that contribute to the greenhouse effect include water vapor, carbon dioxide (CO2), methane, nitrous oxides, and chlorofluorocarbons (CFCs). On Earth, human activities are changing the natural greenhouse
Explanation:
mark brianiest
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.
WILL MARK BRAINLIEST FOR FIRST CORRECT ANSWER* The two species, Paramecium aurelia and Paramecium caudatum, fight for food and resources in the same test tube.
This is an example of which of the following?
a) mutualism
b) predator - prey
c)competition
d) commensalism
*all links will be reported
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.
100 points!! Can you write a few paragraphs about green power? Include what it is and why it is important.
Answer:
-------------------------------------
Written by Applepi101
-------------------------------------
Conserve to Preserve
"Green power"? Well, to make energy production more eco-friendly, scientists came up with the idea of "green-power". Like its name, green power is green, or has less to no impact on the earth. So green-power is the energy that does the least amount of harm to the ecosystem, and has the highest environmental benefit. A vast alternative to fossil fuels, such as petroleum, crude oil, coal, and even "natural" gases.
Some examples of alternatives are geothermal energy, which involve geothermal power plants, which use heat from deep inside Earth to generate steam to make electricity. Geothermal heat pumps, which tap into heat close to the Earth's surface to heat water or provide heat for buildings. Next up, there is hydroelectric energy, coming from the Greek word meaning "water" is when a turbine converts the kinetic energy of falling water into mechanical energy. A generator then converts the mechanical energy from the turbine into electrical energy.
But those are just some examples. Switching to green power can help improve the environmental profile of your electricity use, and even reduce your carbon footprint! Just using solar panels instead of the less-friendly systems can help save hundreds of glaciers and icecaps from melting, save bears from waking up too soon, bees from dying, changing the gender of sea turtles and save taking away all the vibrant animals who have made the Earth their home.
Thank you!
-------------------------------------
Hope this helps!
--Applepi101
How is the human growth protein mass produced?
Select the correct answer from each drop-down menu.
Why is nuclear power considered to be a clean source of energy?
Nuclear power is regarded as a clean source of energy because it doesn't produce
1._______ or 2._______
1
A) greenhouse gases
B)Harmful waste products
C)enough energy
2
D)too much energy
E)helpful waste products
F)air pollutants
Answer:
enough energy , too much energy
can someone help me with this it would really make my day go right
Answer:
primary is the answer...
all living things have DNA? true or false
Answer:
Most of what we know of have DNA
Explanation:
Some living things like viruses I think have RNA (unless viruses aren't considered living)
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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