What scientist proposed the theory of evolution by natural selection? Ramey Lyell Darwin Malthus
Answers
Answer:
charles darwin
Explanation:
Related Questions
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.
Answers
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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What is the difference between a population and a community?
A population is made up of all species in an area. A community is made up only of one species
A population is made up of only one species. A community is made up of all species in an area.
A population is made up of all the species and nonliving things in an area. A community is made up of all species in an area.
The words mean the same thing.
Answers
Answer:
I think the answer is A population is made up of only one species. A community is made up of all species in an area.(the second one)
Explanation:
Population is a group of organisms of
one species living in the same area at
the same time.
Community is all of the population of
different species in an area.
Answer:
The answer Is 2
Explanation:
A population is made up of only one species. A community is made up of all species in an area.
Which of the following sequence shows the correct order from the smallest to the largest?
Gene-Cell-Nucleus-Chromosome-DNANucleotide
NucleotideGeneDNAChromosome NucleusCell
CellNucleusDNANucleotideChromosomeGene
CellNucleusChromosomeDNAGeneNucleotide
Answers
Answer:
Nucleotide, Gene, DNA, Chromosome, Cell.
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.
Answers
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.
20 POIN'TS PLZZZ HELP ASAP...!!!!!!
Theorize how the measurements of the indentation damage would correlate to the speed of the car.
Answers
The more intense the force is of the car hitting something and the faster it goes the longer it's going to take to stop going forward. Lighter cars accelerate faster than heavy cars.
hellllllllllllllppppppppppppp
Answers
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.
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
Answers
Answer:
False
Explanation:
Which of the following adds to the greenhouse effect and global warming?
Answers
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
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?
Answers
Answer:
Red and yellow. Incomplete is a blending of traits.
Explanation:
all living things have DNA? true or false
Answers
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)
Explanation: hope this helps!
PLZ HELP!!!!!!!!!!!!!!!! What type of muscles are found in the large intestine?
1. smooth
2. striated
3. cardiac
Answers
Answer:
#1 smooth
Explanation:
The type of muscle found in the digestive system is called smooth muscle. Smooth muscle is one of three major types of muscle tissue in the body.
Answer:
smooth
Explanation:
The muscularis layer surrounds the submucosa and contains many layers of visceral muscle cells that contract and move the large intestine. Continuous contraction of smooth muscle bands in the muscularis produces lumpy, pouch-like structures known as haustra in the large intestine.
What is photosynthesis
Answers
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! :)
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
Answers
Answer:B
Explanation:
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
Answers
which step in the scientific method is next after making a prediction? A. conducting an experiment. B. Forming a testable hypothesis. C stating the scientific question. D. Analyzing the collected data
Answers
Answer:
1. Make an observation.
2. Ask a question.
3. Form a hypothesis, or testable explanation.
4. Make a prediction based on the hypothesis.
5. Test the prediction.
6. Iterate: use the results to make new hypotheses or predictions.
I think this will help you
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
Answers
Please answer questions for the brainliest.. and stars..
Answers
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.
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
Answers
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
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
Answers
Answer: the answer should be C
Explanation:
A pink-flowered plant is crossed with a white-flowered plant. What is the
probability of producing a pink-flowered plant? %
Answers
If pink flowered plant is heterozygous (Pp) and a red flower is dominant (PP) then the probability of a pink flowered plant with white recessive would be 50%
What is the difference between the genetic material on two sister chromatids and the genetic material on homologous chromosomes ?
Answers
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?
Answers
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.
which measure is more likely help to improve the energy issues faced by carribbean countries ? A. try to source cheaper fuel B.invest in more alternative energy C. lower oil prices D. try to find local sources of fossil fuels
Answers
Answer:
Explanation:
A
Tadpoles use lungs to breathe Please select the best answer from the choices provided 0 T OF
Answers
Answer: False
Explanation: Tadpoles have gills and breathe with gills.
Answer: F
Explanation: Its creepy but they have gills. Little to none have lungs.
A cube is measured and has all sides that are 2 cm long. What is the
VOLUME for this cube?
8
24
3
Answers
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
How is the human growth protein mass produced?
Answers
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%
Answers
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 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
Answers
Answer:
photosynthesis and the erosion of limestone
Penguin wings and swallow wings are _____ structures.
A compound
B analogous
C vestigial
D homologous
Answers
Answer: Analagous
They are different anatomically but perform similar functions.
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.
Answers
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