Answers
Answer:
the answer it can be depended on.
Related Questions
Which of the following is used as biochemical evidence for evolution? *
a. Similarities in bone structures
b. Similarities in DNA
c. Fossil record
d. Similarities in eye function
Answers
All compounds that have been found to be mutagenic in the Ames test are also carcinogenic. View Available Hint(s) All compounds that have been found to be mutagenic in the Ames test are also carcinogenic. True False Submit Part B Why are liver extracts used in the Ames test? View Available Hint(s) Why are liver extracts used in the Ames test? A liver extract is necessary for the bacteria to produce histidine revertants. Liver enzymes activate the bacterial enzymes. Liver enzymes may activate some innocuous compounds, making them mutagenic. The bacteria require the nutrients present in the liver extract for growth.
Answers
Answer:
Part A: False
Part B: Liver enzymes may activate some innocuous compounds, making them mutagenic
Explanation:
The Ames test, also known as Salmonella typhimurium reverse mutation assay, is a bacterial short-term technique used to identify if a particular chemical compound may cause mutations in target cells. It has been shown that there exists a positive correlation between carcinogenicity and mutagenicity in the Ames test, but this correlation is not absolute. In the Ames test, a rat liver homogenate (containing liver enzymes) can be added in order to identify substances that are not mutagenic themselves but are metabolized in order to form a mutagen (e.g., benzopyrene).
The energy that powers photosynthesis comes from
A. oxygen.
B. water.
C. the sun.
D. chemicals.
Answers
Answer:
sun but am not so sure about it
Four groups of organic compounds found in living organisms are proteins carbohydrates lipids and nuclei acids. Which element is a main component in nucleic acids but not in the other three organic compounds?
Answers
Answer:
Phosphorus
Explanation:
Nucleic Acids are made up of Carbon, Hydrogen, Oxygen, Nitrogen, and Phosphorus. Remember that they have a sugar phosphate backbone and their nucleotide bases.
An easy way to remember what all four macromolecules are made up of is
CHO-CHO-CHON-CHONP
Carbohydrates-Lipids-Proteins-Nucleic Acids
Carbon(C)
Hydrogen(H)
Oxygen(O)
Nitrogen(N)
Phosphorus(P)
Cell differentiation causes embryonic
cells to become which of these cells? A) prokaryotic cells B) specialized cells C) stem cells
Answers
Answer c
Explanation:
Taxonomic classification systems for organisms are similar to many other classification
systems. The illustration below compares the National Football League to the currently
recognized taxonomic structure.
?
?
Phylum
?
?
Family
?
Species
Professional Sports Organization
NFL
Conference
Division
Team
Office/Defense
Position
Player
1 According to the diagram, the level labeled Professional Sports Organizations is most
likely which taxonomic classification?
A Class
B Domain
C Kingdom
D Order
Answers
Answer:
Domain
Explanation:
“Professional Sports Organization” is listed at the very top, or 2 tiers above Phylum. 2 tiers above Phylum is Domain.
Which of the following is a molecule with more than one element?
O Atom
O Bacteria
O Compound
Organism
Answers
Answer:
compound
Explanation:
as cited from coolgalapagos.com, "Molecules made of more than one kind of element are called compounds. A compound is formed when one kind of atom (an element) joins to at least one other kind of atom of a different element."
Number the steps from when a stimulus is received to when the body reacts.
_____ The stimulus is received by sensory receptors.
_____ Motor neurons cause muscles to contract so the body can react to the stimulus.
_____ The brain processes the information through interneurons.
_____ Interneurons transfer response information to motor neurons.
_____ Sensory neurons carry stimulus information to the brain or spinal cord.
Answers
Answer:
The correct answer is -
1 - The stimulus is received by sensory receptors.
2 - Sensory neurons carry stimulus information to the brain or spinal cord.
3 - The brain processes the information through interneurons.
4 - Interneurons transfer response information to motor neurons.
5 - Motor neurons cause muscles to contract so the body can react to the stimulus.
Explanation:
In most of the organism including humans body response according to the stimulus it receives. The stimulus is received by the sensory receptors to the sensory neurons or afferent neurons that are present on the skin, nose tongue ears, or eyes. Many other receptors and pain receptors present on various internal organs as well.
These sensory neurons carry the stimulus to the spinal cord or brain where this information received by the stimulus process through interneurons and transfer the response of the particular stimulus to the motor neurons. These motor neurons result in muscles contracts so the body can react.
Which sequence furthers scientific knowledge? Hypotheses generate a scientific question, leading to observations, which can be tested through an experiment. Observations generate a scientific question, leading to a hypothesis, which can be tested through an experiment. Hypotheses generate a scientific experiment, leading to observations, which can be tested through a question. Observations generate a scientific experiment, leading to a hypothesis, which can be tested through a question.
Answers
Answer:
The correct answer is - Observations generate a scientific question, leading to a hypothesis, which can be tested through an experiment.
Explanation:
In any scientific knowledge development process, scientists need to follow the scientific process in a particular sequence that helps in developing and testing a hypothesis.
The sequence has:
observation: Observation requires you to pay attention to occurrences around
Forming question: on the basis of observation form a question about why that occurrence happens.
Hypothesis formation: The hypothesis is your initial prediction on why that happens.
Experiment: The experiment is being done in order to collect data and analysis so you can test your hypothesis
Answer:
Its b
Ur welcmom
Babies with very low or very high birth weight are less likely to survive. The graph shows the percentage of babies born at different weights.
A graph entitled Percentage of Babies born at Different Weights has weight in pounds on the horizontal axis, and percentage on the vertical axis. A small percentage of babies are born at the low and higher birth weights, and a greater amount are around 7 to 8 pounds.
Which statement is a valid claim that could be made using the data in the graph?
Directional selection is occurring because the graph favors an extreme.
Stabilizing selection is occurring because the average is favored.
Disruptive selection is occurring because the two extremes are favored.
Biodiversity variation is occurring because there is an increase in trait variation.
Answers
Answer:
C
Explanation:
Otherwise people wouldn’t have differences
Answer:
C!!! :))
Explanation:
I tookt the test and got it right.
Why does our sun appear to be bigger than all of the other stars?
A.The sun is much hotter than other stars.
B.The sun is the closest star to the earth.
C.The sun's color is yellow which is the brightest, most visible star.
D.As light travels from the other stars, it gets reflected.
Answers
Hope this helps (i can’t explain, because “B” is the explanation lol) :)
3 examples of radioactive dating?
Answers
Answer:
Uranium 238
Potassium 40
Rubidium 87
Explanation:
Briefly describe what uses the oceans can pose to humanity. Write your response in the essay box below.
Answers
Answer:
Water, fresher climate, not only scientific factors but also a psychological factor (nice beaches, palms, other wildlife, etc.)
help................
Answers
The top left, would be light energy from the sun, while the top of the circle would be living beings. Think about it just like plants that that gain energy from the sun through photosynthesis. Then the bottom of the circle would be nonliving beings, either decomposed plants or animals that bring nutrients to soil, or dead ones that we eat. This cycles through until the energy is rereleased through heat. Therefore the top right would be heat energy, every living thing on earth creates gradual amounts of heat. Imagine going for a run, you'll probably be hotter afterwards right? I know it's not the most scientific answer but its 100% right.
Hope this helps!
If a DNA molecule is made up of 14% Thymine, theoretically, what percentage would be made up of Guanine?
Answers
Answer:
I expect to find
Explanation:
A=30% C= 20% T = 36% G=14%
What level of organization is shown in the image
Answers
Five general characteristics of organisms in kingdoms Plantae or Fungi are listed in the box. Which table correctly lists the characteristics of the organisms in the two kingdoms?
Answers
Answer:
B
Explanation:
C table correctly lists the characteristics of the organisms in the two kingdoms. So, the correct option is C.
What is Five kingdom classification?The system of biological kingdoms is the way in which science classifies living things in order of evolution according to their ancestors which means all species that make up these five large groups. Some recent theories divide them further into six or seven showing the common ancestors and sharing some of their genes which belong to the same family tree.
Along with the kingdoms of living things, there are other taxonomic categories within the same classification system, such as, for example, domain, kingdom, phylum, class, order, family, genus, and species.
Therefore, the correct option is C.
Learn more about Five kingdom classification, here:
brainly.com/question/14489978
#SPJ6
Which is an example of a scientific theory?
A. On average, larger mammals sleep longer than smaller mammals.
B. If a plant receives pure water, then it will grow more than one that
receives salt water.
C. Organisms evolve over time due to changes in heritable physical
characteristics.
D. If a person takes at least one vitamin per day, then it will reduce a
person's level of tiredness.
HELP PLEASE!
Answers
Answer: Organisms evolve over time due to changes in heritable physical characteristics.
Explanation:
There are a few things to look for when distinguishing between a nonscientific theory and a valid scientific theory. One thing to consider is if there are any published literature, experimental studies, and data available to support the theory. Most scientific theories have data and information tied to them. Another factor to examine is who has developed the theory. A scientific theory will always be supported by evidence with large quantities of data and testing. An example of a scientific theory is the theory of evolution, which observes changes in heritable physical traits over time in an organism. A hypothesis might be that all organisms evolve at the same rate.
Organisms evolve over time due to changes in heritable physical characteristics is an example of a scientific theory known as evolution. Thus, option C is correct.
What is evolution?Evolution is the scientific theory that explains that "a change in the characteristics of biological populations over next generations.
According to scientists RNA is the first existing molecule on earth that replicate by itself and the process of evolution lead to advanced forms of life.
These characteristics are easily trasfered from one generation to other generation.
Therefore, Organisms evolve over time due to changes in heritable physical characteristics is an example of a scientific theory known as evolution. Thus, option C is correct.
Learn more about evolution here:
https://brainly.com/question/13492988
#SPJ2
This is the combination of decomposed organic matter and weathered rock that supports plant growth
Answers
Answer: Soil
Explanation:
In males, the 4 haploid or diploid cells at the end of Meiosis 2 become 4 sperm cells.
Answers
Which of the following statements is true about the process of Photosynthesis? *
A. Carbon Dioxide is produced
B. Sugar is produced
C. ATP is produced
D. Water is produced
Answers
Answer:
carbon dioxide is produced
Explanation:
I hope this helps :)
what process causes stem cells to become immune system cells,then some immune system cells to become antibodies?
Answers
A population with a growth rate equal to
zero is
A. stable
B. gaining members
C. increasing in size
D. decreasing in size
Answers
PLEASE HELP I NEED HELP (Plant related / Project stuff)
Answers
Answer:
B, D, A, E, C
Explanation:
1. environmental factors
2. growth
3. adaptation
4. organism
5. genetic factors
help-- multiple choice!
Biogenic sediment is made of at least 30 percent...
acidic chemicals
alkaline properties
limestone or other rock
skeletal remains
Answers
Answer:
The answer is the last one, skeletal remains
Answer: Skeletal remains
In a sample of double stranded dna if 27% of the nitrogenous bases are thymine what percentage of nitrogenous bases are cytosine
Answers
Answer:
23%
Explanation:
According to Chargaff's law A = T and G = C
T = 27%
A = 27%
27 + 27 = 54
100 - 54 = 46
46/2= 23
So 23%
How is energy produced by respiration stored
Answers
Answer:
Explanation:
Cellular respiration converts the chemical energy stored in glucose into chemical energy stored in the ATP molecule. The cells break glucose down into carbon dioxide and water while producing energy that they store in ATP molecules.
Answered by the ONE & Only #QUEEN aka #DRIPPQUEENMO
Hope this helped!!!
PLEASE HELPPP ASAP!!!
1. List all of the omnivores in this food web
2. List all the herbivores and this food web
3. List all the producers in this food web
Answers
Answer:
omnivores: Birds, Toad, Skunk, Red fox, Wolf, Bear
herbivores: Bees, Deer, Mice, Rabbit, Insects
producers: blossoms, nuts, bark, leaves, blossoms
In protein synthesis, how many nitrogenous bases code for a single amino acid?
one
two
three
four
Answers
Answer:
C
Explanation:
EDGE 2022
B) Now imagine that a hurricane has deposited large patches of light colored sand among the
rocks. Use the axes below to sketch how you think your graph from part A would change under
these new conditions. What type of selection is acting under these new conditions?
Answers
Here's li[tex]^{}[/tex]nk to the answer:
bit.[tex]^{}[/tex]ly/3tZxaCQ
