Answer:
A mutation is a change that occurs in our DNA sequence, either due to mistakes when the DNA is copied or as the result of environmental factors such as UV light and cigarette smoke. Over a lifetime our DNA? can undergo changes or 'mutations?' in the sequence of bases?, A, C, G, and T.
Explanation:
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Cork cambium is the protective tissue of a stem. What mechanism does it use to protect the stem? HINT: It's not A.
A. Deposits of water in the cork cambium act as a barrier and protect the stem from water loss, physical damage, and invasion of pathogens.
B. Deposits of minerals in the cork cambium act as a barrier and protect the stem from water loss, physical damage, and invasion of pathogens.
C. Deposits of oils or waxes in the cork cambium act as a barrier and protect the stem from water loss, physical damage, and invasion of pathogens.
Answer:
The answer should be C. The cambium produces a waxy substance called suberin which repels water so..
Answer:
B. DEPOSITS OF MINERALS IN THE CORK CAMBIUM ACT AS A BURRIER AND PROTECT THE STEM FROM WATER LOSS, PHYSICAL DAMAGE, AND INVASION OF PATHOGENS..
Explanation:
A & C is wrong! just took the test and got it wrong. neither one is right. THE ANSWER IS B.
which organelles are important to the life process of metabolism
Answer:
Cellular Metabolism
Explanation:
Im pretty sure thats it!
Answer:
the mitochondrion and the chloroplast.
Explanation:
The diagram above represents the phases of the moon. Position 1 represents the
new moon. Positions 2 through 8 represent the phases of the moon that follow.
Which phase does position 8 represent?
Answer:
waxing crescent
Explanation:
Position 8 represents waxing crescent phase. It is observed after a new moon and can be observed until the first quarter of moon.
What are the phases of moon?The waxing and waning nature of the moon is responsible for its various phases. This is due to the fact that moon is the only natural satellite of the earth. It revolves around the earth in a fixed orbit.
As earth revolves around the sun, the sunlight that falls on moon makes us visble those parts. Thus, it appears that moon is changing its shape.
A lunar month which is of 29.5 days usually is contains four primary and four intermediate phases. It is described as: New moon, Waxing crescent moon, First quarter, Waxing gibbous moon, Full moon, Waning gibbous, Last quarter and Waning crescent moon.
These phases have specific time in which they can be observed in the sky. New moon is an exception, as no part of the moon is visible then.
The phases of the moon are therefore considered as astronomically important.
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Please me help ASAP.
Answer: the second answer
Explanation:
Which of the following phenotypic classes reflect offspring that were generated as a result of a crossover event? Select all that apply. Select all that apply. wild type miniature wings garnet eyes miniature wings, garnet eyes SubmitRequest Answer Part B If 800 offspring were produced from the cross, in what numbers would you expect the following phenotypes? __wild type : __ miniature wings : __ garnet eyes : __ miniature wings, garnet eyes Enter your answer as the number of flies of each phenotype separated by a colon (example: 100:300:100:300).
Complete question:
The genes for miniature wings (m) and garnet eyes (g) are approximately 8 map units apart on chromosome 1 in Drosophila. Phenotypically wild-type females (m + g / mg +) were mated to miniature-winged males with garnet eyes.
Part A
Which of the following phenotypic classes reflect offspring that were generated as a result of a crossover event?
Select all that apply.
garnet eyes wild type miniature wings miniature wings, garnet eyesPart B
If 800 offspring were produced from the cross, in what numbers would you expect the following phenotypes?
__wild type : __ miniature wings : __ garnet eyes : __ miniature wings, garnet eyes
Enter your answer as the number of flies of each phenotype separated by a colon (example: 100:300:100:300).
Answer:
Part A:
2. wild type (m+g+/mg)
4. miniature wings, garnet eyes (mg/mg)
Part B:
32:368:368:32
Explanation:
When calculating the recombination frequency, we need to know that 1% of recombinations = 1 map unit = 1cm. And that the maximum recombination frequency is always 50%.
The map unit is the distance between the pair of genes for which every 100 meiotic products, only one results in a recombinant one.
So, en the exposed example:
PART A:
First, we need to Identify the gametes for the individual with the genotype m + g / mg + and label parental and recombinants
Gametes:
m+ g parental type m g+ parental type m+ g+ recombinant typem g recombinant typeKnowing that the only possible gamete type for the other parental is mg, then we can identify the phenotypic classes of the offspring that were generated as a result of a crossover event. These would be
2. wild type (m+g+/mg)
4. miniature wings, garnet eyes (mg/mg)
PART B:
We know that the total number of individuals equals 800.We also know that the distance between genes equals 8 MU.To calculate the number of the phenotypes among the offsprings,
8 map units = 8% of recombination in total
= 8/2% m+g+/mg + 8/2% mg/mg
= 4% + 4%
The recombination frequency of m+g+/mg equals 0.04
The recombination frequency of mg/mg equals 0.04.
100% - 8% = 92% of parental in total =
= 92/2% of m+ g/mg + 92/2% m g+/mg
= 46% + 46%
The recombination frequency of m+g/mg equals 0.46
The recombination frequency of mg+/mg equals 0.46.
The frequency for each ggenotype is:
F (m+g+/mg) = 0.04 F (mg/mg) = 0.04. F (m+g/mg) = 0.46 F (mg+/mg) = 0.46.The number of individuals with each genotype is:
m+g+/mg = 0.04 x 800 = 32mg/mg = 0.04 x 800 = 32m+g/mg = 0.46 x 800 = 368m g+/mg = 0.46 x 800 = 36832 wild type : 368 miniature wings : 368 garnet eyes : 32 miniature wings, garnet eyes
Two students gather information on the global effects of plastic found in ocean waters. Student A collected information from three peer-reviewed scientific journals on the internet while student B collected information from a local newspaper.
Which statement best describes the reliability of the students' research?
A
Student A's research is more reliable because it was gathered from peer-reviewed journals.
(Choice B)
B
Student B's research is more reliable because it came from a single source.
(Choice C)
C
Student B's research is more reliable because newspapers can only publish current research.
(Choice D)
D
Student A's research is more reliable because it came from the internet.
Answer:Student A’s research is more reliable because it was gathered from peer-reviewed journals.
Explanation:
In any experiment, reliabilty and validity is very important. The best statement that best describes the reliability of the students' research is that Student A's research is more reliable because it was gathered from peer-reviewed journals.
Reliability is simply known as an individual obtaining the same answer through the use an instrument to measure something more than once.It is the degree to which research method gives stable and consistent results.
Reliability often deals with consistency of a measure. Ita types are test-retest reliability, internal consistency, and inter-rater reliability.
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Volcanoes are part of which sphere of Earth?
a. biosphere
b. geosphere
c. hydrosphere
d. atmosphere
The sun has many different layers that describe its structure. In which layer is the temperature of the sun cooler than the core and dense enough that thermal radiation is sufficient to transfer the intense heat of the core outward?
A. photosphere
B. convection zone
C. radiation zone
D.photosphere
In a biological reaction involving an enzyme, what does the active site of an enzyme bind to?
A. the inactive site of another enzyme
B. the catalyst
C. the active site of another enzyme
D. the substrate
Answer:substrate
Explanation: The enzyme 's active site binds to the substrate. Increasing the temperature generally increases the rate of a reaction, but dramatic changes in temperature and pH can denature an enzyme, thereby abolishing its action as a catalyst.
Answer:
The Substrate.
Explanation:
The enzyme 's active site binds to the substrate. Increasing the temperature generally increases the rate of a reaction, but dramatic changes in temperature and pH can denature an enzyme, thereby abolishing its action as a catalyst.
https://courses.lumenlearning.com/boundless-biology/chapter/enzymes/#:~:text=The%20enzyme%20's%20active%20site,its%20action%20as%20a%20catalyst.
Plus I took the test on k12.
How are prokaryotic cells classified by shape? Explain in detail.
Answer:
The two prokaryotic domains (Archaea and Bacteria) each comprise several smaller taxonomic groupings. Within the Archaea are the euryarchaeotes, crenarchaeotes, nanoarchaeotes, and korarchaeotes. Within the Bacteria are proteobacteria, chlamydias, spirochetes, cyanobacteria, and gram-positive bacteria.
Explanation:
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Which of the following are ways that you can reduce your contribution towards climate change?
a) All of these
b) Using public transportation
c) Powering down electronics
d) Recycling
Answer:
A
Explanation:
they all reduce carbon dioxide admissions
please help! I will give brainly! x
Why was 1990 an important year regarding air quality?
The United States took first steps to keep the air clean.
The United States created the Environmental Protection Agency.
Modifications and improvements were made to the Clean Air Act.
Funding was established under the Clean Air Act to study air pollution.
Answer:
C. Modifications and improvements were made to the clean Air Act.
Explanation:
Btw I answered first
The process of carbon fixation occurs through what
Answer: Carbon fixation is the process by which inorganic carbon is added to an organic molecule. Carbon fixation occurs during the light independent reaction of photosynthesis and is the first step in the C3 or Calvin Cycle.
Phosphate is present in
A. DNA
B. RNA
C. Both DNA and RNA
D. Neither
Answer:
c)both DNA and RNA
explanation
When it is attached to a molecule containing carbon, it is called a phosphate group. It is found in the genetic material DNA and RNA, and is also in molecules such as adenosine triphosphate (ATP) that provide energy to cells. Phosphates can form phospholipids, which make up the cell membrane.
Hannah and Becca are fraternal twins. They are both athletic. Hannah is a swimmer, and Becca is a runner. Which sister would have denser bones?
According to the question, Hannah would have denser bones because her bone would get heavier due to water absorption through epithelial cells.
What is Bone density?Bone density may be characterized as a type of measurement that significantly involves the accumulation certain amount of minerals contained in a certain volume of bone. This measurement is generally used to find out and treat serious bone loss, called osteoporosis.
When an individual is practicing in a swimming pool constantly for a longer period of time, it is observed that his/her bone density must be increased as compared to those who are running or performing other types of athletic activities.
Therefore, according to the question, Hannah would have denser bones because her bone would get heavier due to water absorption through epithelial cells.
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How would I explain the carbon cycle to a 1st grade classroom?
Answer:
To a 1st Grader:
Carbon is the magic element that is the basis of life on Earth. All living things contain carbon. Animals breathe it out, and plants breathe it in. Plants, people and animals depend on each other.
The carbon cycle is a process where carbon dioxide travels from the atmosphere into living organisms and the Earth, then back into the atmosphere. Plants take carbon dioxide from the air along with water and photosynthesis from the sun and use it to make food.
Explanation:
The carbon cycle is the biogeochemical cycle by which carbon is exchanged among the biosphere, pedosphere, geosphere, hydrosphere, and atmosphere of the Earth. Carbon is the main component of biological compounds as well as a major component of many minerals such as limestone. To a first grader is different because they wouldn't understand what half of these words mean lol.
The carbon cycle is the biogeochemical cycle that exchanges carbon between the Earth's biosphere, parallel layers, geosphere, hydrosphere, and atmosphere.
What is the importance of carbon cycle?The carbon cycle is nature's method of recycling carbon atoms, which travel from the atmosphere into organisms on Earth and then back into the atmosphere.
The majority of carbon is stored in rocks and sediments, with the remainder in the ocean, atmosphere, and living organisms.
The carbon cycle is critical to the survival of life on Earth. Nature has a tendency to maintain carbon levels in balance.
This means that the amount of carbon naturally released from reservoirs equals the amount naturally absorbed by reservoirs. Maintaining this carbon balance ensures that the planet remains habitable for life.
Thus, by regulating the rate of carbon dioxide in the atmosphere, the carbon cycle plays an important role in regulating Earth's global temperature and climate.
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What is the function of cell membrane
Explanation:
The function of the cell membrane is to protect the organelles that break down proteins and nutrients.
It is semi-permeable which means it takes in select nutrients and excretes cell waste into the bloodstream.
How many grams of starch would you need to make 500ml of a 5% solution?
which statement correctly describes a feature of the rock cycle?
1 rocks are preserved through the process
2 rocks change from one type to another
3 different rock groups are not related to one another
4 rocks change from one type to another in specific order
Answer:
Rocks change from one type to another in a specific order.
Explanation:
A rock cycle can be described as a process that follows a sequence or a specific order in which the various rocks are transformed from one type to another.
1) Which is the variation
stage and why?
Which mutation(s) cause the product to be a non-functional protein?
Answer:Nonsense mutations produce truncated and frequently nonfunctional proteins
Explanation:
What are the effects on the ecosystem and what is being done to help.
Answer:
Climate change not only affects ecosystems and species directly, it also interacts with other human stressors such as development. Although some stressors cause only minor impacts when acting alone, their cumulative impact may lead to dramatic ecological changes.
Explanation:
what molecules main job is to carry the genetic code?
1. DNA
2. Protein
3. tRNA
4. rRNA
Which of the following was NOT one of Darwin's
arguments for his theory of natural selection?
A) There is variation among individuals in a
population
B) Much variation is heritable
C) Populations possess an enormous reproductive
potential
D) Resources are abundant
E) Population sizes remain stable
Answer:
option D) resources are abundant.
Explanation:
according to Darwin resources are small. individuals of a population compete for these resources.
Which of the following contains a single type of element?
gold
carrot
table salt
vegetable soup
Answer:
Gold
Explanation:
Gold is a singular element according to the periodic table. (Labeled Au), and it does not result from chemical bonds or multiple elements, like all other items listed here do.
I really hope this was helpful to you! Thanks and have a nice day!
What are the roles of a decomposer? Check all that apply.
1) Decomposers kill harmful microorganisms.
2) Decomposers break down waste and dead organisms.
3) Decomposers provide oxygen to the atmosphere.
4) Decomposers convert sunlight into food energy.
5) Decomposers recycle nutrients in the environment.
Answer:
2) Decomposers break down waste and dead organisms.
Explanation:
I hope this helps :)
Answer:
2 and 5
Explanation:
A plant and an animal are both living things. According to the Cell Theory, what can you conclude about these two
very different organisms? SC.912.L.14.1
Plants have cells but animals do not
They are both made of one or more cells.
They both come from the same kind of cell.
O They both come from a non-living organism.
Answer:
They are both made of one or more cells.
Explanation:
A plant and an animal are both living things. According to the Cell Theory, what we can conclude about these two very different organisms is that they are both made of one or more cells.
A cell can be defined as the fundamental or basic functional, structural and smallest unit of life for all living organisms. Some living organisms are unicellular while others are multicellular in nature.
A unicellular organism refers to a living organism that possess a single-cell while a multicellular organism has many (multiple) cells.
Generally, cells have the ability to independently replicate themselves.
In a cell, the "workers" that perform various functions or tasks for the survival of the living organism are referred to as organelles and they include nucleus, cytoplasm, cell membrane, golgi apparatus, mitochondria, lysosomes, ribosomes, chromosomes, endoplasmic reticulum, vesicles, etc.
Plants that are common to the temperate midlatitudes could also thrive in the tropics if they were grown at higher elevations. The effects of altitudinal zonation on plants and animals are unique to Latin America. Altitudinal zonation has had a strong influence on the types of native plants and animals found in the Andes and other mountainous regions. Only a few zones of the mountains may be used for some agricultural purpose. Altitudinal zonation makes it possible to grow many different types of crops.
Answer:
Due to different climatic condition.
Explanation:
Altitudinal zonation makes possible to grow many different types of crops because of different climatic condition of the region. Each and every plant has different climatic and environmental requirements due to which different plants can be grown on different places where environment is suitable. Some plants needs cool environment so they can be grown on high altitude while some needs warm temperature which can be grown on lower altitudes near the equator.
which of the following occurs when a gene is expressed
I need help asappppp plz
Answer:
C
Explanation:
