Answers
Answer:
A> Presence of a catalyst lowers the amount of energy needed to break the bonds.
Explanation:
Activation energy is the amount of heat or energy you must add to get the reactants to break their bonds. when on top, it will be an activated complex (point where you have added enough energy but new bonds have not yet formed.)
Related Questions
Which are ways that humans can lower biodiversity as they us environment? Check all that apply. A. Converting a forest to soccer fields B. Spraying pesticides on lawns An C. Building roads across tundra D. Replacing riverbanks with concrete bulkheads and
Answers
Answer:
A, B, C, and D
Explanation:
All of the options represent ways by which humans can lower biodiversity as they use the environment.
By definition, biodiversity or biological diversity of an area refers to the total number of living organisms that are domicile in that area.
Converting a forest to a soccer field requires that the variety of plants and animals in the forest are removed and the forest soil is planted with turfs in their place. Thus the biodiversity of the forest has been greatly reduced in other to pave way for a soccer field.
A pesticide is an agrochemical that kills pests. Pests are biological organisms even if they are not that desirable on the lawn. Thus, killing them off using a pesticide is a way of reducing the biodiversity associated with the lawn.
A tundra represents an ecoregion with its own characteristic plants and animal, even if they are few. Hence, building roads across tundra requires that portions of the biodiversity are removed to pave way for the road.
Riverbanks serve as habitats for a variety of living organisms. Replacing them with concrete bulkheads means that the habitat is lost and the organisms displaced. Thus, the biodiversity of the region gets reduced.
Therefore, options A, B, C, and D are all correct.
HELLLLLp ill give 100 points
Cell death is always a harmful and negative process for an organisms.
Question 1 options:
True
False
Question 2 (2 points)
Saved
Which of the following events happens during Translation?
Question 2 options:
a new mRNA molecule is made
new tRNA molecules are made
DNA splits in half and moves into the cytoplasm
different types of RNA work to create an amino acid chain
Question 3 (2 points)
What is the complementary mRNA for the DNA strand shown above?
Question 3 options:
CAAAUG
UATACG
ATUGTG
CTAGU
Question 4 (2 points)
What is the benefit/value of studying a simple worm like C. elegans?
Question 4 options:
because humans can use C. elegans as food source (they are quite delicious!)
there is actually no benefit of studying C. elegans
because we can gain insights into human genetics and development
because C. elegans can potentially kill humans
Question 5 (2 points)
Which of the following contains the base Uracil?
Question 5 options:
DNA
both DNA and RNA
neither DNA or RNA
RNA
Question 6 (2 points)
Which letter in the picture above identifies a "chromosome"
Question 6 options:
E
C
B
A
D
Question 7 (2 points)
How do enzymes speed up a biological reaction?
Question 7 options:
by raising the activation energy
by transporting chemicals
by using activation energy
by lowering the activation energy
Question 8 (2 points)
What process is responsible for the the different types of cells in an organisms body?
Question 8 options:
programmed cell death
differentiation
mitosis
osmosis
Question 9 (2 points)
In DNA and RNA, what carries the code for amino acids”?
Question 9 options:
combination of sugars
combination of phosphates
combination of strands
combination of nucleotides/nucleobases
Question 10 (2 points)
Amylase is a protein that speeds up the breakdown of starch. This is an example of what protein function?
Question 10 options:
signaling
transporting
storing
catalyzing
Question 11 (2 points)
Which of the following statements is true?
Question 11 options:
a chromosome contains many genes
a DNA strand is made of many chromosomes
a chromosome is larger than a cell
a gene contains may chromosomes
Question 12 (2 points)
Which of the following events happens during Transcription?
Question 12 options:
a mRNA strand is created using the code in DNA
a new DNA strand is created from the amino acid sequence
a new ribosome is created
a sequence of amino acids is made
Question 13 (2 points)
What type of RNA carries a code from the nucleus to the cytoplasm that determines the order of amino acids in a protein?
Question 13 options:
ribosomal RNA
messenger RNA
nuclear RNA
transfer RNA
Question 14 (2 points)
Proteins perform many important functions in cells.
Question 14 options:
True
False
Question 15 (2 points)
What codes for RNA?
Question 15 options:
Protein
tRNA
DNA
ribosome
Answers
Answer:
where is the questions dude???!?
A student pours a spoonful of dirt into a cup of water. The water and dirt are stirred together. The water turns a light brown color. Some dark pieces float to the top of the cup and another dark layer forms on the bottom of the cup. Which statement BEST describes the contents of the cup?
Answers
The statements described the contents of the cup is that it is a mixture.
What is the cup?Let us notice that the question that we have here is incomplete but to the best of my ability I would try to explain the concept that is involved here. We know that a mixture would imply any combination of the substances that are not chemically combined together.
We can see that both the water and the dirt are independent substances. They do not mix up at all when we put the dirt in the water. They would continue to be separate from each other although they have been mixed together.
Hence, we can see that putting the dirt and the water in the same place would only lead to the production of a mixture of substances as we have described in the answer stated here.
Learn more about mixture:https://brainly.com/question/24898889
#SPJ1
1. In human populations in Africa, two common alleles affect the structure of hemoglobin, the protein that carries oxygen on red blood cells. What is regarded as the normal allele (the allele common in European populations) is usually labeled A, and the sickle-cell allele is designated S. There are three hemoglobin genotypes, and the phenotypes associated with these genotypes can be distinguished in a variety of ways. In one African population of 10,000 adults, for example, there are 4,000 AS individuals, 6,000 AA individuals, and 0 SS individuals. a. Suppose that these individuals were to mate at random. What would be the frequency of the A and S alleles among the gametes that they produced
Answers
In the African human population two common alleles affect the structure of the hemoglobin, the proteins and oxygenated red blood.
The common alleles of the Europeans being labeled as A and sickle cells as S have three types as genotypes, phenotypes and associated. For an African population of 10,000, there are 4000 samples As the individuals of 6000 have AA and 0 SS. If the individual were mating randomly then A and S alleles would produce be doubled.Learn more about the human populations in Africa, two common.
brainly.com/question/13577302.
Which of these are methods of gene transfer for bacteria?
Answers
The three are named transformation, transduction, and conjugation.
Which of the following is NOT considered an EPA criteria pollutant?
Lead
Ozone
Nitrogen Dioxide
All of the above are EPA criteria pollutants
Answers
All of the above are considered as EPA criteria pollutants. Hence option d is correct.
What is pollutant?Pollutant is defined as a chemical or energy that is injected into the ecosystem and has unintended effects or negatively impacts a resource's usefulness. The word is frequently used as a synonym for contamination.
Ozone, particulate matter, carbon monoxide, Sulphur dioxide, and nitrogen dioxide are the five main air pollutants regulated by the Clean Air Act for which the EPA generates an AQI value each day in each county. These six contaminants include Sulphur oxides, lead, nitrogen oxides, ground-level ozone, carbon monoxide, and lead.
Thus, all of the above are considered as EPA criteria pollutants. Hence option d is correct.
To learn more about pollutant, refer to the link below:
https://brainly.com/question/23857736
#SPJ1
Case Study
Jessie is a plant lover and is interested in growing grapes in her backyard. Based on her interest, she brought some seeds from a local store and grew it under all necessarily required conditions. She took good care of plant and allows it to fully develop its roots and stem. The temperature and moisture were also properly controlled during the growth but unfortunately, due to some reasons the grapes grown were not fleshy and had smaller size. It was also found that these grapes were less sweeter than the natural grapes. As she was concerned, she took her plant to the nearby agricultural research laboratory for proper investigation by Dr.Sean. Dr. Sean found 3 problems in this case and explained the cause of those problems to Marie and recommended suitable growth hormones to Marie.Identify the problems in this case and explain the cause of those problems. What could be the possible solution to these problems? Explain your answer in correct manner.
Answers
The problems in this Case Study of Jessie are:
Small size of the grapesLack of fleshiness in the grapesReduced sweetness of the grapesWhy the above problem?The causes of these problems could be due to various factors such as:
Improper pollination - Grapes require proper pollination to develop normally. If there is a lack of pollination or cross-pollination, the grapes may become smaller in size and less fleshy.Lack of proper nutrients - Grapes require proper nutrients such as nitrogen, phosphorus, and potassium to grow and develop properly. If the soil is lacking in these nutrients, the grapes may not develop properly.Lack of sunlight - Grapes require adequate sunlight for proper growth and development. If the plant does not receive enough sunlight, the grapes may become smaller and less sweet.To address these problems, Dr. Sean could recommend the following solutions:
Improve pollination - This could be done by introducing bees or other pollinators to the area. Additionally, planting other flowering plants in the area can also help attract pollinators.Provide proper nutrients - Dr. Sean could recommend adding fertilizers or other nutrients to the soil to ensure that the grapes receive the necessary nutrients.Therefore, In addition to these solutions, Dr. Sean may also recommend the use of growth hormones such as auxins or gibberellins to help stimulate growth and development of the grapes. Overall, proper care and attention, along with the recommended solutions, can help ensure the successful growth and development of the grape plant.
Learn more about growing grapes from
https://brainly.com/question/18455449
#SPJ1
What sphere refers to water and ice?
a. atmosphere
b. hydrosphere
c. lithosphere
d. biosphere
Earth's outermost sphere is called the
a. biosphere.
b. atmosphere.
c. lithosphere.
d. hydrosphere.
What part of Earth contains rocks?
a. Biosphere
b. Hydrosphere
c. Atmosphere
d. Lithosphere
What of Earth's spheres is composed of a mixture of gases?
a. mesosphere
b. hydrosphere
c. atmosphere
d. biosphere
What is Earth's hydrosphere?
a. the gases in the air
b. the solid, rocky part of Earth
c. all of the water on the planet
d. the study of Earth's atmosphere
Answers
2)B
3)D
4)C
5)C
5. Find out which animal is actually most closely related to the hawk: shark, bat, or alligator. Use taxonomy to support your answer. Report your findings and explanation here.
Answers
Based on taxonomy, the hawk is most closely related to alligators.
*Taxonomy deals with the classification of organisms.
*Hawk belongs to the Class Aves while the alligator belongs to the Class Reptilia.
*The common characteristics between these Classes are both have scales and are laying eggs.
3.2
Describe the tendency of population movement in South Africa over
the same 50-year period.
3.1.3 What influence does this population shift have on agriculture?
Answers
Overall, the population shift in South Africa has had a negative impact on agriculture, leading to a decline in the sector and decreased food security for rural communities.
What is population?Population refers to the total number of individuals of a particular species or group living in a specific area or region. In the context of human populations, it refers to the number of people living in a particular geographic area or country. Population can also refer to subgroups within a larger population, such as age groups, ethnic or racial groups, or socioeconomic groups. Population can be measured and analyzed in various ways, including through demographic data such as birth and death rates, migration patterns, and population density.
Here,
Over the past 50 years, there has been a significant population shift in South Africa, with many people moving from rural areas to urban areas in search of better economic opportunities, education, and healthcare. This trend is known as urbanization and is a common phenomenon in many developing countries.
As people move from rural areas to urban areas, the population density in urban areas increases, while rural areas become less populated. This population shift has had a significant impact on agriculture in South Africa. As more people move to cities, there is less demand for agricultural products, leading to a decline in the agricultural sector. This has resulted in the loss of agricultural land, reduced productivity, and decreased food security for rural communities.
In addition, the population shift has also led to changes in land use. As urban areas expand, they often encroach on agricultural land, leading to land fragmentation and reduced agricultural productivity. This can also lead to conflicts between urban and rural communities over land use and resource allocation.
To know more about population,
https://brainly.com/question/27459270
#SPJ1
lithification is most closely related to (apex)
A. sedimentary rock formation
B. igneous extrusion
C. impact metamorphism
D. dynamic metamorphism
Answers
Answer: Sedimentary rock formation
Explanation:
explain two situations on a pedigree that would allow you to determine the genotype of an individual with the dominant phenotype
Answers
1) If the individual with the dominant phenotype has a parent with the recessive phenotype, the genotype of the individual is heterozygous (Aa).
2) If the individual with the dominant phenotype has offspring with the recessive phenotype, the individual must be heterozygous (Aa).
The two situations on a pedigree that would allow you to determine the genotype of an individual with the dominant phenotype.
Situation 1: Identify the individual with the dominant phenotype (let's call them Individual A).Look for the parents of Individual A.
If one of the parents has the recessive phenotype (aa) and the other parent has the dominant phenotype (AA or Aa), then Individual A must be heterozygous (Aa). This is because the dominant phenotype is only expressed when at least one dominant allele is present.Situation 2: Identify the individual with the dominant phenotype (Individual B).
Observe the offspring of Individual B.
If Individual B has offspring with the recessive phenotype (aa), it means that Individual B must be heterozygous (Aa). This is because to have offspring with the recessive phenotype, both parents must contribute a recessive allele.
By analyzing the presence of the recessive phenotype in the parents or offspring of an individual with the dominant phenotype, we can determine their genotype as heterozygous (Aa).
For more such question on genotype
https://brainly.com/question/902712
#SPJ8
In the process known as osmosis, ________ moves through a semipermeable membrane into an area of ________ concentration. solvent, lower solvent
Answers
Answer:
water moves through semipermeable membrane
from lower Concentration to higher concentration
In the process known as Osmosis, water moves through a semipermeable membrane into an area of higher concentration solvent to lower concentration solvent.
How osmosis can be different from diffusion?In osmosis, the movement of any liquid occurs across a semipermeable membrane. While diffusion is depicted as the net movement of solutes between two solutions.
Without the semipermeable membrane, the process of osmosis can't be understood.
Therefore, osmosis is the movement of any liquid through a semi-permeable membrane into an area of higher concentration solvent to lower concentration solvent.
To learn more about osmosis, refer to the link:
https://brainly.com/question/2625460
1. 4. Do some research and describe two or three scenarios in which it would be preferable to use a stab tube vs. a growth plate. (Hint: What do bacteria use to help them move? Can motility be used to help identify many medically important pathogenic bacteria such as the Enterobacteriaceae?)
Answers
Answer and Explanation:
If we want to isolate a species or identify it, we should grow it in a plate with the appropriate media. In this way, it will be much easier to separate a single cell and analyze it by its morphology or study the colony growth. Stab tubes can be used when we want to study, for example, how a bacteria might grow under low-oxygen conditions. Cells might be inoculated in a liquid media or semi-solid media. We might analyze their growth in the deeper parts of the tubes, where oxygen is very low. Grow bacterias cultures in agar plates will also allow us to separate the species of interest form other species present in the culture. We might also compare and study differences between species growth. When growing bacterias on growth plates, they do not last long, as they have more chances of dehydrating. Instead, if we want the culture to survive for a longer-term, we should use stab tubes. Stab tubes are better to study the motility of different species, which might help us to identify certain bacterias of interest.1. Which can adapt to changes?
populations
offspring
individuals
alleles
Answers
Answer: Populations
Explanation:
Substance P:
O is a pain detractor
O is a pain enhancer
has nothing to do with pain
O is a dietary supplement
Answers
Substance P is a neuropeptide that plays a significant role in the transmission and modulation of pain signals in the nervous system. It acts as a pain enhancer rather than a pain detractor.
When tissue damage or inflammation occurs, substance P is released by sensory neurons in the peripheral nervous system. It acts as a neurotransmitter and binds to specific receptors called neurokinin-1 receptors (NK-1 receptors) in the central nervous system and peripheral tissues. This binding triggers a cascade of events that amplify the pain signal and contribute to the perception of pain.
Substance P is involved in several processes related to pain:
1. Sensitization of pain receptors: Substance P increases the sensitivity of pain receptors, known as nociceptors, making them more responsive to painful stimuli. This sensitization can lead to an increased perception of pain.
2. Inflammation and immune response: Substance P promotes inflammation by inducing the release of histamine, cytokines, and other inflammatory mediators. It also attracts immune cells to the site of injury or inflammation, further contributing to the pain response.
3. Transmission of pain signals: Substance P is involved in transmitting pain signals from the peripheral nerves to the spinal cord and brain. It helps relay pain information to higher brain regions, contributing to the conscious experience of pain.
While substance P is primarily associated with pain, it also has other functions in the body. It is involved in regulating blood flow, neurogenic inflammation, mood regulation, stress responses, and gastrointestinal functions. However, its role as a pain enhancer is well-established and has been a focus of research in the field of pain management and pharmacology.
for more questions on nervous system
https://brainly.com/question/2114466
#SPJ8
What types of measurements can Susie make on the plants to determine how they did in different types of light
Answers
The height of the plant under different types of light should be measured.
What is the height of the plant?In an experiment, we seek to determine how a cause leads to an effect. In this case, Susie is trying to know the effect of different types of light on the growth of a plant.
It is true that the easiest way to measure the growth of the plant is to look at the height of the plant. This shows us the extent to which the plant grows.
Let is recall that in this case, the height of the plant is the dependent variable while the kind of light is the independent variable. As the kind of light is changed, the height of the plant which is an indicator of the growth of the plant changes also and this is the crux of what Sarah is studying.
Thus, the type of measurement that Susie should make on the plants to determine how they did in different types of light is to measure the height of the plant under the different types of light.
Learn more about experiment:https://brainly.com/question/11256472
#SPJ1
Write the theoretical and behavioural aspects of unified rival insect
Answers
Write the theoretical and behavioural aspects of unified rival insect
Which is the relationship between photosynthesis and cellular respiration?
Cellular respiration makes the glucose that is needed by photosynthesis
Photosynthesis makes the glucose that is broken down by cellular respiration
Cellular respiration converts the glucose that is made by photosynthesis to oxygen.
Photosynthesis converts the glucose that is made by cellular respiration to carbon dioxide
Answers
1. What drove Paleolithic artists to make the sculptures? (Woman of Willendorf - Chapter 14)
2. What is the Egyptian canon of proportions?
4. What is Polykleitos's canon of proportions?
Answers
1. Paleolithic artists made the sculptures as fertility symbols or representations of a mother goddess or for use in religious or spiritual rituals.
2. Egyptian canon of proportions is a system of rules used to produce lifelike representations of the human form.
3. Polykleitos' canon of proportions is as a set of rules used to produce idealized representations of the human form.
What are the Egyptian canon of proportions and Polykleitos's canon of proportions?Ancient Egyptian artists used a system of rules known as the Egyptian canon of proportions to produce lifelike representations of the human form.
It is based on a grid system that divides the body into 18 equal pieces, each of which corresponds to a different measurement.
Ancient Greek sculptors employed Polykleitos' canon of proportions as a set of rules to produce idealized representations of the human form. The goal of the Polykleitos canon, which is based on the principles of symmetry, or balance and proportion, is to produce figures that are aesthetically beautiful and harmonious.
Learn more about sculptures at: https://brainly.com/question/28401743
#SPJ
Some theories suggest that these sculptures may have been associated with fertility and childbirth. The Egyptian canon of proportions is a set of artistic guidelines used by Egyptian artists to create realistic and proportionate representations of the human form. Polykleitos's canon of proportions is a set of artistic guidelines used by Greek artists to create idealized representations of the human form.
The motivations behind the creation of Paleolithic sculptures such as the Woman of Willendorf are not definitively known, but there are several theories. Some researchers suggest that these sculptures may have been related to fertility and childbirth, as they depict exaggerated sexual features such as large breasts and hips. The Egyptian canon specified the ideal proportions for different body parts, such as the head, arms, and legs, in relation to the overall height of the figure.
Learn more about the Egyptian artist here.
https://brainly.com/question/7558908
#SPJ1
This chart gives data on greenhouse gas emissions in the United States from 1990 to 2013. Which questions would help clarify the evidence in the chart? Graph of U.S. Greenhouse Gas Emissions by Gas, 1990-2013. Horizontal line, 1990-2013. Bottom to above, gases shaded are Fluorinated, Other greenhouse, Methane, Carbon Dioxide in million metric tons of carbon dioxide equivalents ranging from 0-8,000.
Answers
The questions that would help clarify the evidence in the chart are:
A. What percentage of total greenhouse gas emissions is caused by natural sources?
C. Why are carbon dioxide emissions so much higher than other greenhouse gases?
What are greenhouse gases?A greenhouse gas is a particular kind of gas that both absorbs and emits radiant radiation, which causes the atmosphere to warm.
Methane, nitrous oxide, carbon dioxide, and other manmade compounds are among the main greenhouse gases.
Carbon dioxide is cited as the most significant greenhouse gas since it now contributes the most to the warming caused by human activity,
Learn more about greenhouse gases at: https://brainly.com/question/12684997
#SPJ1
Complete question:
This chart gives data on greenhouse gas emissions in the United States from 1990 to 2013. Which questions would help clarify the evidence in the chart? Select ALL the correct answers.
1. What percentage of total greenhouse gas emissions is caused by natural source?
2. Should industries emitting carbon dioxide in huge amounts be fined or punished?
3. Why are carbon dioxide emissions so much higher than other greenhouse gases?
4. Why did the quantity of carbon dioxide emissions stay constant throughout the period?
5. What is the chemical formula for methane?
In addition to the repair of DNA double-strand breaks, homologous recombination is a mechanism for generating genetic diversity by swapping segments of parental chromosomes. During which process does swapping occur?
Answers
Answer:
during cell division (meiosis)
Explanation:
During meiosis, DNA double-strand breaks (DSBs) between homologous chromosomes are induced and, after the exchange of DNA pieces, breaks are jointed by specific DNA-repair enzymes (such as DNA glycosylases). DSBs can be repaired by two different mechanisms: non-homologous end-joining (NHEJ) and homologous recombination (HR), which have different functional consequences. These mechanisms of recombination have potential for increasing the genetic variation since the resulting gametes will contain a different set of chromosome fragments.
The diet of a omnivore
Answers
Answer:
It is both herbivore and carnivore
Explanation:
It is plants AND meat.
OMNI, means many using our knowledge if that it is the 'middle man' meaning it does both
1. Identify the method of climate study that can tell how much rain an area had over the last 200 years.
microscopic organism data
sediment core data
O
tree ring data
ice core data
Answers
Answer:
It soubds like all the above except microbiological organisms.
Answer: The correct answer is Tree Ring Data (Option C)
Explanation:
A tree-ring record can be used to produce information about rainfall, temperature, the presence of groundwater, and fires around where the tree is growing.
Describe a process that happens again and again in the rock cycle.
Answers
According to the research, the correct answer is that erosion is a process that happens again and again in the rock cycle.
What is the rock cycle?It is the process in which rocks are formed depending on the place where they are formed, a type of rock will be designated, which are classified into three;
igneous rock,metamorphic rocksedimentary rockIn this sense, after the igneous rocks are formed, they are exposed to exogenous agents (water, wind, atmosphere) which begin to erode the rocks, it is here where the erosion process enters that the defragmentation of the rocks by the agents external, transport and sedimentation.
Therefore, we can conclude that the rock cycle explains and understands the processes that give rise to igneous, sedimentary and metamorphic rocks and undergo different processes such as erosion.
Learn more about rock cycle here: https://brainly.com/question/2878618
#SPJ1
How are galaxies classified? (1 point)
O by their shape
O by their location within the universe
O by their size
Oby the age of their stars
Answers
Which choice below correctly shows the base pairing rules in DNA? A. A - T G - C B. A - C T - G C. A - U G - C D. A - G C - T
Answers
Choice A. A - T G - C correctly shows the base pairing rules in DNA.
What are the base pairing rules in DNA?The base pairing rules in DNA makes reference to a series of rules for which Adenine is always paired with Thymine by two hydrogen bond, while Guanine always pairs with Cytosine by three hydrogen bonds.
Therefore, with this data, we can see that the base pairing rules in DNA is based on the matches between different nucleotides in DNA, which depends on the chemical interaction of their nitrogen bases.
Learn more about the base pairing rules here:
https://brainly.com/question/10444320
#SPJ1
Is Foraminifera plant-like or animal-like protist? Justify your choice
Answers
Foraminifera is considered as an animal-like protista. It is a very simple micro-organism that are amoeba-like. They are amoeboid protists that are unicellular eukaryotes that inhabits the sediments of the aquatic environment. They catch their food using their pseudopodia in order to obtain green algae, brown algae, diatoms, and bacteria. It does undergo photosynthesis but their way of life makes them more animal-like.
What would most likely happen to this ecosystem if all of the gray wolves
were removed?
Secondary
consumers
Primary
consumers
Primary
producers
Red fox
Red squinel
Pine
Snowshoe
hore
Gray woll
Roven (debivore)
Moose
Beaver
WA
Maple Bolsam Fir Cottonwood Aquatic plants
OA. The cottonwood population would decrease.
OB. The snowshoe hare population would decrease.
OC. The fox population would decrease.
OD. The moose population would decrease.
Answers
What is the importance of crossing over and independent assortment?
O It allows for exact copies of the cells to be made
It allows for mitosis to occur properly
O It allows for genetic variation within species
It allows for the same gametes to be produced every time