Answer:
Rosalind Franklin
Explanation:
Photo 51 is an X-ray diffraction image of a paracrystalline gel composed of DNA fiber taken by Raymond Gosling, a graduate student working under the supervision of Rosalind Franklin in May 1952 at King's College London, while working in Sir John Randall's group.
Have a good day and stay safe!
Answer:
One of them is Raymond Gosling
(BRAINIEST FOR QUICKEST) Describe two safety precautions you should take when handling a flammable liquid.
Answer:
goggles and gloves
Explanation:
farm animals can be classified based on what
Answer:
SEE BELOW
Explanation:
Farm animals are classified based on the following: Size, Habitat, Mammals, Non-mammal, and their types of stomach.
Which correctly describes crossing over?
Answer:
when to genetic material is exchanged between two different chromosome or between different regions within the same chromosome
Explanation:
offspring which posses combination of traits that differ form those found in either of their parents
Answer:
the process whereby nonsister chromatids exchange genetic material
Explanation:
A
A chromosome’s structure is what it is made of and how it is organized. Its function is what it does. How does knowing about the structure and function of chromosomes help to explain variation in sexually reproducing organisms?
Answer:
Chromosome, the microscopic threadlike part of the cell that carries hereditary information in the form of genes. A defining feature of any chromosome is its compactness. For instance, the 46 chromosomes found in human cells have a combined length of 200 nm (1 nm = 10− 9 metre); if the chromosomes were to be unraveled, the genetic material they contain would measure roughly 2 metres (about 6.5 feet) in length. The compactness of chromosomes plays an important role in helping to organize genetic material during cell division and enabling it to fit inside structures such as the nucleus of a cell, the average diameter of which is about 5 to 10 μm (1 μm = 0.00l mm, or 0.000039 inch), or the polygonal head of a virus particle, which may be in the range of just 20 to 30 nm in diameter.
In the fossil record, there is no evidence of anything living on land before plants. Why are plants necessary before more complicated animals can evolve?
A. Plants were not needed.
B. Plants were needed to produce Carbon dioxide.
C. Plants were needed to change the soil content.
D. Plants were needed to produce oxygen.
Answer:
maybe option D is correct
Plants are necessary before more complicated animals can evolve because plants were needed to produce oxygen. The correct option is D.
What is the fossil record?The fossil record is the preserved remnants of plants and animals that are found in the layers of the earth's crust. They give information about organisms present in old times.
Plants give oxygen, food, and shelter to the organism, so it is necessary for surviving of organisms.
Thus, the correct option is D. Plants were needed to produce oxygen.
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Which correctly lists the three plates that border the
Indo-Australian Plate?
O Pacific, Eurasian, and African
O African, North American, and South American
O Eurasian, African, and South American
O North American, Pacific, and African
Answer:
A- Pacific, Eurasian, and African.
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Pacific, Eurasian, and African are the three plates that border the Indo-Australian Plate.
What plates border with the Indo-Australian Plate?The Indo-Australian Plate consists of the majority of the Indian Ocean. It borders with the Eurasian Plate in the northside, the Antarctic Plate in the southside and the Pacific Plate in the east.
So we can conclude that Pacific, Eurasian, and African are the three plates that border the Indo-Australian Plate.
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which best describes the earliest land plants? A. had long, thick leaves B. lived in close contact with water C. grew to be very tall D. produced large, thick seeds
B. lived in close contact with water
Explanation:This is because we now that the area near water is very fertile so it most probable that the earliest trees grew there and slowly spread to the other parts
The earliest land plants can best be described as having been in intimate touch with water. So, the correct option is B.
What are Plants?The kingdom Plantae, which is primarily composed of photosynthetic eukaryotes, includes plants. They are largely multicellular. In the past, algae and fungi were included in the plant kingdom, which comprised all living organisms that were not animals.
Plants are vital components of nature and living things. The act of photosynthesis allows them to produce their own sustenance. Because of the existence of a substance called chlorophyll, plants appear green in colour. Direct energy production from sunlight occurs in plants through photosynthesis. It is better to think of the earliest terrestrial plants as having had close contact with water.
Therefore, the correct option is B.
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what main carbohydrate do grapes have
the main carbohydrate in grapes is sucrose
Consider the following statements:
1) Glycolysis involves a partial breakdown of glucose to produce two molecules of
pyruvate
31) Glycolytic reactions produce a net total of two ATP molecules
111) Glycolysis occurs in the mitochondrial matrix of eukaryotic cells
IV) Glycolysis produces 2 NADH molecules
V) Glycolysis cannot occur without oxygen
Which of the above statements is/are correct?
A) I only
B) I and II
C) I and III
D) I, II, and IV
E) I, II, IV, and V
Answer:
The answer is option D.
I, II, and IVHope this helps you
A bacterial or archaeal species is best defined as _____ the most fully characterized and most representative member of a taxon a collection of strains that share many stable properties and differ significantly from other groups of strains a collection of strains that have distinctive immunological reactivity the descendants of a single, pure microbial culture that have been maintained by careful aseptic technique
Answer:“a monophyletic and genomically coherent cluster of individual organisms that show a high degree of overall similarity with respect to many independent characteristics
Explanation:
Which two large landmasses formed when Pangaea first started to separate?
Africa and Europe
O Europe and Laurasia
Gondwanaland and North America
Laurasia and Gondwanaland
Laurasia and Gondwanaland were formed when Pangaea first started to separate.
What are landma-sses?A landmass is a very large area of land such as a conti-nent.
Landmasses include:
super continents
continents
Is-lands
There exist four major continuous landmasses on Earth:
Americas,
Ant-arctica, and Australia.
Afr-o - Eurasia,
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Most primates are arboreal, and living in this environmental context poses great challenges. Describe at least one specific problem or challenge a primate might encounter in a forested environment (consider things like movement, finding/accessing food, and finding mates).
Answer:
The main problem will be "habitat distraction".
Explanation:
The primary idea to all the combustion as well as cleaning up of boreal rainforests, which also generate excrete least 20% of global emissions that contributes to having some changed climate, and even the scavenging of animals for fruit and vegetables as well as illegal trade in the life of wild animals. For decades, we always expressed concerns more about the danger of primates, however now we just have strong evidence to demonstrate that the problem is much more serious than anyone expected.What property of DNA makes it possible for a probe to find a single-stranded
DNA target gene?
A. Probes are dominant over genes.
B. Chromosomes come in pairs.
C. A DNA molecule has two paired strands.
D. Alleles are in pairs.
Answer:
A DNA molecule has two paired strands.
how are the respiratory and circulatory systems connected
Answer:
The respiratory system works directly with the circulatory system to provide oxygen to the body. Oxygen taken in from the respiratory system moves into blood vessels that then circulate oxygen-rich blood to tissues and cells.
The respiratory and circulatory systems bring oxygen and nutrients to the cells. The respiratory and circulatory systems work together to maintain homeostasis. The respiratory system moves gases into and out of the blood. The lungs contain the bronchi, bronchioles, and alveoli.
The circulatory and respiratory systems work together to maintain homeostasis.
Foliated metamorphic rocks have mineral grains that are randomly placed. true or false
Answer:
True
Explanation:
Metamorphic rocks are foliated if their mineral grains are arranged randomly.
Answer:
False
Explanation:
Foliated means to have grains placed in parallel layers, while non foliated rocks mean the grains are placed randomly
What is the role of the molecule pictured below?
Molecule with 3 phosphate groups bonded to an adenosine molecule
Answer:
ATP. Adenosine 5'-triphosphate, or ATP, is the principal molecule for storing and transferring energy in cells. ... These three phosphate groups are linked to one another by two high-energy bonds called phosphoanhydride bonds.
Answer:
Explanation:
ATP synthase
The energy released by the electrical potential across the membrane causes an enzyme, known as ATP synthase, to become attached to ADP. ATP synthase is a huge molecular complex and its function is to catalyze the addition of a third phosphorous group to form ATP.
Read the passage: Genetically Engineered Corn. Then 1. Explain what Bt corn is and how it is made. 2. Describe the benefits of Bt corn. 3. Describe the risks of Bt corn. 4. Make an argument for or against the use of Bt corn and provide support for your position.
1. Bt maize is a genetically modified maize. It is produced through biochemical techniques and with the use of biotechnology that allows genes of Bacillus thuringiensis bacteria to be introduced in the DNA of corn. These genes allow Bt maize plants to produce a toxic protein specific to certain groups of insects.
2. With the production of this protein, Bt corn becomes immune to attack by these insects. As a result, the use of pesticides in the corn crop is reduced, which makes production healthier and avoids side effects on the soil. In addition, it prevents the production of corn from falling due to the attack of insects.
3. Among the disadvantages, we can say that Bt maize does not control all the pests that attack maize, only a few, which allows maize to be attacked. It can also trigger evolution in pest species that are immune, creating a toxin-resistant species. Finally, it can create contamination in wild maize crops (that is, those that have not been genetically modified), ending diversity.
4. I believe that the use of Bt corn is favorable. This is because it allows a greater production of food to meet our need and increasingly intense demand for food. However, it is necessary to affirm that the use of this corn needs regulation and inspection, mainly in the big industries that can harm the small producer.
Answer:
3. Among the disadvantages, we can say that Bt maize does not control all the pests that attack maize, only a few, which allows maize to be attacked. It can also trigger evolution in pest species that are immune, creating a toxin-resistant species. Finally, it can create contamination in wild maize crops (that is, those that have not been genetically modified), ending diversity.
Explanation:
Two fruit flies that are heterozygous for body color and eye color are crossed. Brown body color is dominant to black body color. Red eye color is dominant to brown eye color. Use the Punnett square to determine the ratio of offspring with: Brown body and red eyes Brown body and brown eyes : Black body and red eyes : Black body and brown eye.
The ratio of offspring that possess the following phenotype is as follows:
Brown body and red eyes: 9Brown body and brown eyes: 3Black body and red eyes : 3Black body and brown eye: 1This question involves two genes coding for body color and eye color in fruit flies respectively. The brown body color allele (B) is dominant over the black body color allele (b) in the first gene while the red eye color allele (R) is dominant over the brown eye color allele (r) in the second gene. In a dihybrid cross between two fruit flies that are heterozygous for both genes i.e. BbRr × BbRr, the allelic combinations of gametes produced by each parent fruit fly will be:BbRr- BR, Br, bR and brUsing these gametes to complete a punnet square (see attached image), 16 possible offsprings will be produced in a ratio 9:3:3:1 where;Brown body and red eyes (B_R_) : 9Brown body and brown eyes (B_rr) : 3 Black body and red eyes (bbR_) : 3Black body and brown eye (BbRr) : 1Hence, the ratio of the offsprings will be 9:3:3:1Learn more about punnet square at: https://brainly.com/question/14504341?referrer=searchResults
Answer:
9, 16, 3, 16, 3, 16, 1, 16
Explanation:
Brown body and red eyes ⇒ 9 ⇒ 16
Brown body and brown eyes ⇒ 3 ⇒ 16
Black body and red eyes ⇒ 3 ⇒ 16
Black body and brown eyes ⇒ 1 ⇒ 16
Which of these is a producer? moth mushroom fern cheetah
Answer:
dear
from the above options fern is a producer
Answer:
ferns!
Explanation:
which food contains the material needed to build muscle, but does not contain the macromolecules that give quick energy? A. bread B. steak C. broccoli D. potatoes
help
why is using methylene blue as a stain necessary???
What is the source of energy that drives photosynthesis?
¿Qué les explicarías y con qué argumentos basándote en conocimientos científicos para convencerlos de practicar el distanciamiento social y usar mascarilla
Answer:
Experimentos de índole descriptiva han demostrado que diferentes tipos de virus no pueden desplazarse por aire, con lo cual estas estrategias resultan efectivas para evitar su esparcimiento en la población
Explanation:
El distanciamiento social y el uso de barbijos son herramientas útiles para combatir la propagación de muchos virus, especialmente aquellos con un alto indice de infección, como es el caso del nuevo Coronavirus Sars-Cov-2 el cual está asociado a un síndrome respiratorio agudo que puede incluso llevar a la muerte del individuo. Sars-Cov-2 es un virus muy peligroso porque todavía no contamos con un tratamiento efectivo tal como, por ejemplo, una vacuna que permita generar una respuesta inmunológica permanente contra el virus. De este modo, es imprescindible evitar la propagación del virus hasta que la comunidad científica pueda desarrollar un tratamiento efectivo.
1. Which one lived in Antarctica earlier, the labyrinthodont, the lystrosaurus, or the duck-billed dinosaur? Explain
Answer:
The correct answer is - The labyrinthodont.
Explanation:
Fossils of These duck billed dinosaur were found in the Antarctica in sands that were 66 to 67 million years old, however these are also found in north America and north Europe.
About 110 million years ago, labyrinthodonts, the dinosaur that are amphibians. These are the animals that were lived in the river valleys of the Gondwana and the rift valley that was located at that time between Australia and Antarctica.
Thus, the correct answer is - The labyrinthodont.
Q6. A neurotransmitter would have a greater chance of starting an action potential in a post-synaptic neuron by:
opening K+ channels in the post-synaptic membrane
causing a graded depolarization in the post-synaptic membrane
causing a graded hyperpolarization in the post-synaptic membrane
closing Na+ channels in the post-synaptic membrane
Answer:
a
Explanation:
Neurons secrete chemical molecules that act as messenger and takes part in signalling at the arrival of any chemical or electrical impulse are called a neurotransmitter.
The action potential can be started by:
Option a. Opening K⁺ channels in the postsynaptic membrane.
The action can be explained as:
The presynaptic neurons are the active neurons that transmit the impulse from the synapse with the help of neurotransmitters.The resting neurons or the postsynaptic neurons upon receiving the impulse open the channel gates.The postsynaptic receptors interact with the neurotransmitter that leads to the opening or closing of the ionic channels on the membrane.This leads to depolarization of the membrane causing action potential to occur.Thus potassium channels open.
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organism must go through mitosis to build new tissues.
Part C
Based on your model, do you think frogs reproduce sexually or asexually? What are the benefits and drawbacks to this
form of reproduction?
Answer:
Frogs reproducesexually and when organisisms reproduce sexually there are benefits which include:
produces genetic variation in the offspring.
the species can adapt to new environments due to variation, which gives them a survival advantage.
a disease is less likely to affect all the individuals in a population.
A disadvantage is that sexual reproduction takes longer than asexual reproduction. A mate must be found, the egg must be fertilised by sperm, and then the offspring develop. The benefit of introducing genetic variation into the species , however, outweighs this disadvantage.
Answer:
Frogs reproduce sexually: they require sperm from a male and an egg from a female to produce offspring. This type of reproduction allows for greater genetic variation. But organisms that sexually reproduce need to reach sexual maturity before they can reproduce. They also use energy to find a mate.
Which correctly lists three properties that are used to identify minerals? luster, weight, streak magnetism, size, weight size, weight, luster streak, luster, magnetism
Answer:
D.
Explanation:
just took the test
Answer:
D
Explanation:
No explanation .
The image shows the skulls of three different organisms. The foramen magnum position is the hole in the skull where the spinal nerve cord passes through. Based on the structure of the skulls, which two statements can you infer?
Complete question: The image shows the skulls of three different organisms. The foramen magnum position is the hole in the skull where the spinal nerve cord passes through. Based on the structure of the skulls, which two statements can you infer?
a) All three organisms share a common evolutionary lineage
b) Wolves do not share any common ancestors with humans and chimpanzees.
c) Humans likely share more common ancestors with chimpanzees than they do with wolves.
d) Chimpanzees share more common ancestors with wolves than they do with humans.
Note: The skull figures are shown in the attached file
Answer:
a) All three organisms share a common evolutionary lineage
c) Humans likely share more common ancestors with chimpanzees than they do with wolves.
Explanation:
Although controversial, there is a theory that states that the foramen magnum is associated with bipedalism and human beings´ evolution. According to different studies, the foramen magnum moved from the posterior part of the skull to a central and ventral position. This displacement occurred as mammals began to move in two legs - bipedalism-.
When comparing different mammals skulls it seems evident that bipedalism and foramen magnum position and orientation are highly related. Although all mammals have a common ancestor, the foramen magnum of bipeds mammal organisms is located more anteriorly and ventral than the foramen magnum of the quadrupeds mammals.
In the exposed example, when comparing these three skulls, the two statements that might be inferred are:
a) All three organisms share a common evolutionary lineage. This is true because they are all mammals, and as a group, they share a common ancestor in evolution.
c) Humans likely share more common ancestors with chimpanzees than they do with wolves. This is true because by analyzing the foramen position, we can see that both the chimpanzee and the human´s foramen is located on the ventral side of the skull. Chimpanzees´ hole is more posteriorly and humans´ hole is more anteriorly or centrally located, but in both cases, they are in ventral position. Wolves´ hole, on the other hand, is located posteriorly. As we said before, Although all mammals have a common ancestor, the foramen magnum of bipeds mammal organisms is located more anteriorly and ventral than the foramen magnum of the quadrupeds mammals. And groups closer to human beings (in this case is chimpanzee) show their foramen magnum in a similar place than those mammal groups that are further in evolution (wolves).
Answer:
The person on top is right
Explanation:
Write a paragraph of 150 words on the subject ‘different ways to protect ozone layer and prevent emission of hazardous gases’ for hindi
Answer:
There are a few different steps we can take to protect the ozone layer. As you know, the ozone layer is the layer that protects us from the sun’s powerful UV rays and it also protects us from other harmful things roaming in space. The first thing we can do to protect the ozone layer is reduce the use of natural gases. The gases produced from the natural gases had torn holes in the ozone layer. A way to prevent emissions of hazardous gases Is to switch to renewable energy. Renewable energy is not only easier to access and replace, solar panels and wind energy dont give off harsh and hazardous gases that mess with the ozone layer and the climate.
Explanation:
I don’t know how Many words that is. You can add to it if you feel the need to. I don’t know Hindi, maybe you can translate it on google?
In what ways are fats and steroids similar to each other, and in what ways are they different? Fats and steroids are both hydrophilic lipids, but fats help with metabolism while steroids provide insulation. Fats and steroids are both hydrophobic lipids, but fats serve as energy while steroids serve as hormones. Steroids contain a four-carbon ring while fats consist of glycerol and fatty acids, but both are proteins. Steroids help with transport while fats store energy, but both are proteins.
Answer:
Fats and steroids are similar because fats & steroids are both lipids & are both hydrophobic. They are different because fats store energy for molecules & steroids function as a messenger around the cell membrane.
Explanation: