A catalyst is a chemical substance that speeds up chemical reactions by lowering the activation energy.
What is the activation energy?The activation energy of a reaction is the amount of energy required to carry out a chemical reaction.
Proteins are biological catalysts that speed up chemical reactions by lowering their activation energy.
In conclusion, a catalyst is a chemical substance that speeds up chemical reactions by lowering the activation energy.
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Which structures are similar in function, but do not indicate that the organisms are related?
analogous structures
homologous structures
vestigial structures
transitional structure
Answer:
A
Explanation:
analogous structures
Analogous structures are similar in function but do not necessarily suggest that the organisms are related.
What are analogous structures?The term “analogous” is used to describe biological structures that have similar or analogous functions but are not of the same evolutionary lineage. This means that the same biological structures are used by the same species for the same purposes, but the species are from different evolutionary origins. This type of evolution is called convergent evolution.
For example, similar structures of different species might have similar or equivalent functions, even though they originated from a different evolutionary point of view.
The wings of birds and insects are similar organs. Both birds and insects have wings that allow them to fly. However, their wings come from different ancestors. This is an example of analogous structure.
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Sickle-cell disease is a disorder that results in malformed hemoglobin molecules. What is the result of this in terms of hemoglobin function
The result of this disease in terms of hemoglobin function is a defective transport of oxygen in the blood cells.
What is sickle-cell disease?Sickle-cell is a genetic disease where blood cells are known to encode a defective hemoglobin protein.
Hemoglobin protein is responsible for transporting oxygen to all cells of the body, thereby sickle-cell disease causes a problem in this function.
In conclusion, the result of this disease in terms of hemoglobin function is a defective transport of oxygen in the blood cells.
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How is the skin part of the integumentary system and the excretory system?
(Hint: Think of what happens when your body gets very hot.)
Answer:
let's first say that the skin is the largest organ and it's a part of the integumentary system because it helps regulating the body temperature and Incase of high temperature it releases sweat from it's specific swear pores
Answer:
Sweat glands in the skin allow the skin surface to cool when the body gets overheated.\
Explanation:
Which amino acids are most likely present at the dimerization interface of stat3 proteins?.
Answer:
Hydrophobic Amino Acids.
Explanation:
Which of the following processes make producers so unique?
Answer:
I would say b
I might be wrong but I hope i helped! ^^
Answer:
it is D
i am pretty sure
Explanation:
plants use the solar energy from the sun to be able to make chemical energy to synthesis their food( this process is called photosynthesis)
You identify a new species of microorganism in an undersea thermal vent. The microbe is a single cell organism that lacks a nucleus. Which Domain would you classify your new species as belonging to
The domain of the new species of unicellular microorganism in an undersea thermal vent that lacks a nucleus is Archeae.
What is domain?Domain in biology refers to the highest rank in the classification of organisms, above kingdom.
The three domain of organisms are as follows:
Prokarya or BacteriaArchaeaEukaryaMembers of Prokarya and Archaea do not possess a membrane-bound nucleus, however, the major difference between them is that members of domain Archaea are found in extreme habitats e.g. hot regions.
Therefore, the domain of the new species of unicellular microorganism in an undersea thermal vent that lacks a nucleus is Archeae.
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Which of the following did Mendel conclude about patterns of inheritance?
A. An organism inherits one gene in total
B. An organism inherits two genes of a given trait during gamete production
C. Similar forms of genes account for variation in the inherited traits.
D. An organism inherits one gene for each trait
The following did Mendel conclude about patterns of inheritance is B. An organism inherits two genes of a given trait during gamete production. Thus, option "B" is correct.
Who is George Mendel?George Mendel was a famous biologist. His research was on genes and traits. His experiment shows how genes get transferred from parents to offspring. Also he stated about the behaviour and dominance and recessive nature of that alleles.
He also gives the possibility of the dominance of a trait over another trait. The different forms of genes are responsible for various types of inherited traits in an organism.
Thus, option "B" is correct.
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Answer:
B is correct
Explanation:
I got it right on my test, which was 100%.
1. A new species of multicellular, eukaryotic heterotrophs is discovered. This species secretes digestive enzymes to digest its food externally. Which taxa would this organism belong to?
A.
domain Archaea
B.
phylum Platyhelminthes
C.
kingdom Fungi
D.
kingdom Animalia
2. Mammals and reptiles both belong to the amniote clade. What is the evolutionary significance of this clade?
A.
Amniotes produce membranes that allow them to reproduce without laying eggs in water.
B.
Amniotes produce milk to feed their offspring.
C.
Amniotes were the first vertebrates to evolve limbs specialized for living on land.
D.
Amniotes were the first vertebrates to evolve jaws for digesting the tough food found on land.
3. Which of the following is an example of negative feedback leading to homeostasis?
A.
a sponge conforming its internal salt concentration to match the salinity of its environment
B.
a frog slowing its metabolic rate while hibernating over the winter
C.
a cat’s uterine contractions increasing in strength as it gives birth to a litter of kittens
D.
a human sweating to reduce his or her body temperature on a hot day
2.In the evolutionary process, mammals and reptiles evolve Amniotes produce membranes that allow them to reproduce without laying eggs in water.
What are aminiot animals?Amniote animals are those that have amnion surrounding the embryo, while non-amniotes do not have this membrane.
3.Homeostasis in environments can have as a negative example a sponge conforming its internal salt concentration to match the salinity of its environment.
By saving too much the marine environment limits the lives of other animals causing them to migrate in this way, there will be a collapse in the food chain.
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The main difference between ponds and lakes is that ponds _______.
a.
are inland bodies of water
b.
do not develop self-contained ecosystems
c.
are smaller than lakes
d.
have easily observed currents
Answer:
Option C
Explanation:
C.they are smaller than lakes
The sport of American football has come under fire since some professional players have reported head injuries that have led to severe disabilities or even death. Football is very popular in the United States, so the ramifications of such findings are troubling for coaches, players, and fans. Researchers are studying the physical effects of head injuries, how to treat them, and how to prevent them in the first place. If you or someone you care about participates in a sport in which head injuries are common, where would you look for reliable information about the symptoms of a head injury and what to do about it?
In a sport where head injuries are common, it is necessary to seek reliable information about the symptoms of a head injury from a neurologist.
What are the dangers of American football?Considered a high-impact sport due to the constant contact and high rate of orthopedic trauma to players during training and games, traumatic shocks to the head and spine have always been the most worrying problems because they put in check vital parts of the athletes' body.
With this information, we can conclude that in a sport where head injuries are common, it is necessary to seek reliable information about the symptoms of a head injury from a neurologist.
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How are proteins and nucleic acids related?
Answer:
Element of proteins
Explanation:
Nucleic acids contain the same elements as proteins: carbon, hydrogen, oxygen, nitrogen; plus phosphorous (C, H, O, N, and P).
Analyze the given diagram of carbon cycle below.
An image of carbon cycle is shown. The sun, a cloud, two trees, one on the left and the other on the right, an animal, lake, and a factory are shown in the image. An arrow is shown from the sun towards the left tree marked A. The sun is marked B. There is an arrow from the air above the clouds, marked C, towards the left tree. An arrow from a location close to the ground marked D points towards Dead Organisms, which is a label under the animal. An arrow marked E points from the right tree straight up to the clouds. An arrow marked F points from the animal straight up to the clouds. An arrow marked G points from the factory towards the air above the clouds, C. There is an arrow pointing from the air to the lake labeled Carbonates in Water, an arrow pointing down from dead organisms to Fossils and Fossil Fuels, and an arrow from Fossils to the factory.
Part 1: What is happening at location G?
Part 2: Which type of energy transformation is taking place at this location?
Part 3: Justify why this process is a recycling of carbon in the carbon cycle.
The carbon cycle recycles carbon in the earth and at G, carbon dioxide is released into the atmosphere at G, thus contributing to the carbon cycle.
What is the carbon cycle?The carbon cycle is a diagrammatic illustration of a cycle which describes how carbon is recycled in the earth.
The carbon cycle shows the process of how carbon is released to the atmosphere and how it is returned back to the earth's crust.
The process marked G illustrates combustion releasing carbon dioxide to the atmosphere.
The energy transformation at G is chemical energy to heat energy.
Therefore, the carbon cycle recycles carbon in the earth and at G, carbon dioxide is released into the atmosphere at G, thus contributing to the carbon cycle.
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write three characteristics of fungi
[tex]\large{\underline{\underline{\pmb{\frak {\color {red}{Question:}}}}}}[/tex]
[tex] \sf \red{What \: is \: fungi?}[/tex]
[tex]\large{\underline{\underline{\pmb{\frak {\color {blue}{Answer:}}}}}}[/tex]
Fungi is single celled micro organism, which grows in plants or soil. Fungi can be mostly found on soil or dead plants or dead matter.
[tex]\large{\underline{\underline{\pmb{\frak {\color {red}{Question:}}}}}}[/tex]
[tex] \sf \red{Write \: three \: characteristics \: of \: fungi}[/tex]
[tex]\large{\underline{\underline{\pmb{\frak {\color {blue}{Answer:}}}}}}[/tex]
[tex]\green\star[/tex]Three characteristics of Fungi are:
Fungi reproduce through spores. Fungi are mostly Eukaryotic or single celled. Fungi can play major role in recycling.[tex] \boxed{ \frak \red{brainlysamurai}}[/tex]
Think about Compounds in Your Body
Many functions in the body are controlled by special compounds. Which statements about these compounds do you think are true? Check all that apply.
The body can make all of the compounds it needs.
The body gets energy from some compounds.
Some compounds determine physical characteristics.
Answer:
the body can make all of the compounds it needs
Explanation:
the body gets energy from some compounds
What are the processes involved in cellular division?
Answer:
I hope this helps!!
Explanation:
The existence and perpetuation of life depend on the functioning of cells and their divisions. There are two important processes of cell division, which are inextricably linked with each other to maintain the progress of life. These processes are Mitosis and Meiosis.
After fertilization, when a sperm cell and an egg cell unite to form a new organism, it is expected to carry a double number of chromosomes because both the parents contribute their whole number of chromosomes as appropriate for the respective species. But the process of meiosis prevents the doubling of the chromosomes.
It reduces the total number of chromosomes in half so that the offspring (newly formed cell) can retain the same number of chromosomes as the parents. On the other hand, mitosis facilitates in forming of two daughter cells from a single cell where each new cell resembles the parent cell in every respect. Unlike meiosis, mitosis involves duplithe cation of chromosomal pairs, which is essential for cellular reproduction, especially during growth.
The Mechanism of Mitosis:
A specific process is required for forming two daughter cells out of a mother cell. This process is known as mitosis and it is usually divided into four stages, prophase, metaphase, anaphase, and, telophase. In some cases, it is convenient to designate the transition from prophase to metaphase by the name of prometaphase. However, the whole process of the cycle of mitosis is a continuous one.
1. Prophase:
At the beginning of the prophase stage, the cell prepares itself to divide the chromosomes. It is the resting stage when the nucleus becomes a little larger. It also involves the condensation of the previously diffuse, invisible, or dispersed threads into visible chromosomes.
Each chromosome is optically double, which is composed of two identical and closely parallel strands or chromatids lying throughout their length. A chromosome bears a constriction or a narrow region of attachment to the spindle, which is called a centromere.
Constrictions other than the centromere are sometimes called ‘secondary constrictions’.At prophase s,tage the centromere and secondary constrictions look alike, but by metaphase, this distinction is clear because they develop entirely different relations to the spindle.
In this stage (prophase) the outlines of the chromatids present a slightly irregular woolly or hairy appearance. They do not, in general, show a series of granules (chromo-meres) as are seen at the meiotic prophase, and probably this is a real difference between the two. By the end of the prophase, the woolly appearance almost disappears and a smooth outline is visible.
2. Premetaphase:
At the end of the prophase, the nuclear membrane usually disappears and this stage may be defined as the period of spindle formation. During this stage, the chromosomes give an impression of struggling and pushing among themselves too to reach the equator of the developing spindle. The spindle is relatively a solid gelatinous body. It is composed almost entirely of protein with a very small amount of RNA.
The centrosome seems to act as an organizer of the spindle. The centrosome is the differentiated region of cytoplasm containing centriole, which is a minute granule present just outside the nuclear membrane. After the disappearance of the nuclear membrane, the centriole is doubled and the two centrioles move apart from each other to form the poles of the spindle.
The spindle fibers are probably bundles of protein molecules. A distinction may be made between continuous fibers and chromosomal fibers. The continuous fibers run from pole to pole whereas the chromosomal fibers connect the centromeres to the poles.
In the case of bipolar spindles, the equatorial plane is located perpendicular to the long axis, which is the midway between the poles. As the prometaphase proceeds, the chromosomes arrange themselves with their centromeres, on the equatorial plane of the spindle. It is the most dynamic stage which gives rise to a relatively static Metaphase.
what makes phylum arthropoda different from other phylum of kingdom Animalia
see the file attached!!
What is the division of the nucleus of a cell called?
is the insect respiratory system more or less effective compared to the human respiratory system?
I'd say more effective.
"Insects have a more efficient respiratory system than humans. "
But at the same time insects don't have any lungs they breathe through the help of trachea/tubes/and or holes along their abdomen area.
You need to think about how small, compared to us humans, and insect is. They can take in a lot more oxygen than we can (for their size)
If we were to be able to shrink until we're the same size as an insect, they would be the ones taking in way more oxygen because of the way their system is constructed.
HELPPP SOMEONE TOLD ME IT'S THE THYROID BUT I FEEL LIKE IT'S THE ADRENAL GLAND
Janelle was telling her mom about a dream where she was being chased by wolves. She said she ran and ran and when she woke up, her heart was beating rapidly, and she was very tired.
Which gland had secreted a hormone that caused her body to respond in this way?
A) the thyroid
B) the thymus
C) the pancreas
D) the adrenal gland
The gland that secreted the hormone that made Janelle respond as such would be the adrenal gland.
The adrenal glandThe adrenal gland is responsible for the secretion of hormones such as cortisol, adrenaline, and aldosterone. These hormones have a wide variety of functions that help maintain the normal body system
Of particular importance is adrenaline in the fight or flight response of humans. It makes major blood vessels contract and redirects blood to the heart - thus causing the heart to beat faster.
Hence, Jenelle's response would have been due to the adrenal gland producing the adrenaline hormone.
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During the process of cytokinesis in a plant cell
During cytokinesis in plant cells vesicles that are products of Golgi Apparatus fuse in the middle of two dividing cells fuse and form a cell plate , then the cell plate separates the two dividing cells into two cells
The human body contains more than_cells
•100 trillion
•10 billion
•100 billion
Answer:100 trillion cells
Explanation: hope this helps (; rate 5 thank and pick me brainliest
Explain how the development of agriculture and the green revolution both affected humans. then explain how agriculture and the green revolution affected the environment. please be detailed in your response and write in complete sentences for full credit.
Answer:
The Green Revolution involved the widespread use of chemicals in agriculture that had adverse environmental impacts. The interrelationships between water resources, erosion, pesticides and fertilizers, deforestation, population pressure, and biodiversity, and farmers are individually addressed.
Explanation:
The development of agriculture and the green revolution affected humans by increasing food production. However, it also led to environmental degradation.
What is green revolution?The development of agriculture provided humans with a stable food supply and allowed for the growth of civilizations. It also led to the domestication of animals and the creation of farming communities. The Green Revolution, which began in the mid-20th century, involved the development and implementation of new agricultural technologies and increased the productivity of crops, leading to increased food production and economic growth in many countries.
However, the use of pesticides and fertilizers in agriculture has had negative impacts on the environment, including soil degradation, water pollution, and loss of biodiversity. The Green Revolution also resulted in the increased use of mechanized farming, which led to the loss of natural habitats and the displacement of wildlife.
Climate change caused by agricultural practices, such as deforestation, and the use of fossil fuels in farming, has also had a significant impact on the environment.
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3
Which of the following is the first source of energy in the food chain?
A the sun
B) the moon
c) the ocean
D) the clouds
Answer:
the sun!!
Explanation:
the sun is always going to be your first resource! Goodluck! <33
draw a ppunnett sqare using the allele symbol H amd h to show the expected genotypes of the man and women biological children.
The Punnett square is used to make predictions about the genotype and phenotype of a future generation according to the alleles involved in the cross. 25% HH, 50% Hh, 25% hh.
What is a Punnett square?The Punnett square is a graphic representation that shows the different types of gamete combinations according to the alleles involved in a cross.
Punnett square shows the probabilities of getting offspring with different genotypes and their consequent phenotypes.
Let us assume that in the exposed example both parents are heter0zyg0us for the trait.
The feature is coded by a single diallelic gene in which H is the dominante allele and h the recessive allele.
Cross:
Parentals) Hh x Hh
Gametes) H h H h
Punnett square) H h
H HH Hh
h Hh hh
F1) Genotype
- 1/4 = 25% of the progeny is expeted to be h0m0zyg0us dominant, HH
- 2/4 = 1/2 = 50% of the progeny is expected to be heter0zyg0us, Hh
- 1/4 = 25% of the progeny is expeted to be h0m0zyg0us recessive, hh
Phenotype
- 3/4 = 75% of the progeny is expected to express the dominant trait
- 1/4 = 25% of the progeny is expected to express the recessive trait
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How does nuclear envelope aide in compartmentalization
The nuclear envelope distinct the process of transcription and translation in the cell. It controls the release of mRNA from the nucleus through the biological process of transcription.
What is a Nuclear envelope?A nuclear envelope may be characterized as a positively regulated membrane barrier that separates the nucleus from the cytoplasm in eukaryotic cells.
The process of transcription occurs inside the nucleus and transforms DNA into mRNA, while the process of translation occurs in the cytoplasm which transforms mRNA to specific protiens.
Therefore, it is well described above.
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Where in a typical eukaryotic cell would you expect to find genes?.
Mature mRNA
Mature m(messenger)RNA is a type of single-stranded RNA that takes part in protein synthesis and is made up of a DNA template during the process of transcription.
HAVE A NICE DAY!
why cant you keep your tongue still?
Answer:
Because the tongue is a muscle. Muscles can be involuntary(moves without control) or voluntary(controlled). Necessarily, the tongue is not an involuntary muscle, but the tongue not staying still, scientifically, can be a sign of lacking energy.
b) Describe your duties as a plant scientist who is involved in creating a new strain of a plant using genetic engineering.
Mention at least 3 specific duties that you must do while working with Professor Ingo Potrykus on this particular project
3 specific tasks you must do while working with Professor Ingo Potrykus on this specific project is plant hybridization, growth recognition and quality of the products obtained.
How is lineage improvement done?The answer is to obtain populations with genetic variability. This can be achieved through hybridization or crossbreeding. Hybridization is the fusion of genetically different gametes, which results in hybrid individuals heterozygous for one or more loci.
With this information, we can conclude that 3 specific tasks you must do while working with Professor Ingo Potrykus on this specific project is plant hybridization, growth recognition and quality of the products obtained.
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1
Select the correct answer from each drop-down menu.
Earth's atmosphere helps to regulate its temperature. However, the addition of gases such as
causes more energy to radiate back
toward Earth. As a result, the atmospheric temperature increases over time.
If Earth had no atmosphere, it would radiate nearly as much energy as it receives from the Sun. This implies that the temperatures on Earth would
be
Earth's current temperature.
Answer:
Carbon dioxide; lower than.
Explanation:
Temperature can be defined as a measure of the degree of coldness or hotness of a physical object. It is measured with a thermometer and its units are Celsius (°C), Kelvin (K) and Fahrenheit (°F).
Radiation is simply the transmission or emission of energy in the form of particles or electromagnetic waves through a vacuum, material medium or space.
Earth’s atmosphere helps to regulate its temperature. However, the addition of gases such as carbon dioxide causes more energy to radiate back toward Earth. As a result, the atmospheric temperature increases over time. If Earth had no atmosphere, it would radiate nearly as much energy as it receives from the Sun. This implies that the temperatures on Earth would be lower than Earth’s current temperature.
The climate changes on Earth tend to be self-amplified. For example, the Earth is currently going through a warming trend. As the Earth’s temperature rises, the ice caps and sea ice melt, reflecting less solar radiation. This results in more absorption of the Sun’s heat, causing the Earth’s temperature to rise more, and the ice to melt more. This is an example of what type of system?
Answer:
positive feedback system
Explanation: