Answer:
recombinant DNA
Explanation:
In molecular biology, recombinant DNA molecules are genetic sequences formed by combining DNA material from different sources (i.e., organisms, populations, species, etc). Proteins produced from DNA recombinant molecules are known as recombinant proteins. Molecular cloning is the most widely used technique in molecular biology in order to produce recombinant DNA molecules. In this technique, a cloning vector such as, for example, a plasmid of a bacterium, is used to insert a foreign DNA fragment into another cell which is then expressed in the host cell.
which of the following is an object used in relative dating
A-Carbon 14
B-Daughter Isotope
C-Index Fossil
D-Parent Isotope
i know for sure it’s not A
The object that is used in relative dating is Index Fossil. Thus, option C is correct.
What is Fossil records?
Fossil records are described as the position of found fossils all through the surface or the layers of the earth. The older the fossils are, the deeper it is found. Fossil records are also considered to be gathered information about the total number of the discovered fossils and the data obtained from them.
Fossil records are important guides to determine how life existed before. If you are to assemble a fossil, you will be able to see and tell the evolutionary changes that happened over the past years. Fossil records are evidences pointing out that life before is totally different from now.
Index fossils are fossils that are common yet were only present for a brief time. By comparing a rock layer to other rock layers, index fossils enable scientists to determine the relative age of a rock layer. Organisms that are still alive today yet have undergone little alteration over millions of years are known as living fossils.
Therefore, The object that is used in relative dating is Index Fossil. Thus, option C is correct.
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what is reduced soil?
Answer:
A chain of reactions is initiated upon soil flooding leading to reduced (low) soil redox potential (Eh, mV) conditions. These reactions include physical, chemical and biological processes that have significant implications for wetland plants.
what is the meaning of biosphere
Answer:
The biosphere is a global ecosystem composed of living organisms (biota) and the abiotic (nonliving) factors from which they derive energy and nutrients. Earth's environmental spheres. Earth's environment includes the atmosphere, the hydrosphere, the lithosphere, and the biosphere.
Explanation:
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Select all the correct answers.
When people run quickly, they can sweat profusely. Their muscles undergo movement, and the loss of energy takes place. Based on this
description, in which two ways is energy conserved when people run?
-Heat energy is released from the body to the surroundings.
-Heat energy is taken from the surroundings to the body.
-Chemical energy is converted to mechanical energy that's used for muscle movements.
-Radiant energy is converted to mechanical energy that's used for muscle movements.
-Heat energy is converted to mechanical energy that's used for muscle movements.
Heat energy is released from the body to the surroundings and Chemical energy is converted to mechanical energy that's used for muscle movements are the two ways in which energy is conserved when people run.
To do the things you do every day, you need energy. When you eat food, your body can use the chemical energy in the food to move your muscles, allowing you to breathe, walk, run, jump, lift things, and do everything else necessary for survival.
The chemical energy in food is converted into mechanical energy by moving muscles.
Chemical energy in the form of glucose in our food is converted into mechanical energy in the human body during movements such as running or lifting heavy objects. The muscles act as a transducer, converting chemical energy to mechanical energy through muscle contraction.
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Which natural resource is nonrenewable?
sunlight
sugarcane
oil or petroleum
corn
Answer:
There are four major types of nonrenewable resources: oil, natural gas, coal, and nuclear energy. Oil, natural gas, and coal are collectively called fossil fuels.
The natural resource is nonrenewable oil or petroleum is a carbon primarily based totally gasoline .
What are nonrenewable resources?There are 4 essential varieties of nonrenewable resources: oil, herbal gas, coal, and nuclear energy.
Oil is a carbon primarily based totally gasoline that bureaucracy while plant and animal stays are uncovered to intense situations which include excessive pressure (eg below a dust layer on the sea floor.) for hundreds of years. Therefore the oil we use these days took millennia to form.Read more about oil here:
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Which is the source of energy, which drives the water cycle?
Answer:
it's the sun
Explanation:
the water cycle is driven primarily by the energy from the sun
Can anyone help me please
The cell membrane is a lipid bilayer but a cell has only one membrane. which organelles in this lesson have a double membrane?
((chapter 16 lesson 2) Miller & Levine Experience biology the living earth founations workbook)
Answer:
The mitochondria have a double membrane. They help in respiration.
Explanation:
Identify a control group for the analysis shown in Figure 3. Justify analyzing SIRT3 protein level in four different cancer cell lines, as shown in Figure 1. Based on Figures 1 and 3, describe the relationship between SIRT3 expression and cytoplasmic ATP levels. Calculate the percent change in cytoplasmic ATP levels by SC+RNA cells compared with SC+plasmid cells.
Answer:
the control group is NS (normal stomach cells). the different cells can react different ways based on the specific cell because each cell in different people codes for different traits in each person therefore they are likely to react differently. the higher the SIRT3 expression the higher the cytoplasmic ATP levels. the difference is about 1 difference.
Explanation:
Which of the following processes is NOT a physical or chemical change?
a. crushing
b. weighing
c. melting
d. passing electric current
Answer:
b
Explanation:
doesn't change anything
What are the like terms in the expression: 2a + 3b+ 4C - 5a + 8 - 4
THESE ARE THE OPTIONS
2,3,4, -5
O 2a, 3b, 4c
-5a, 8
2a, -5a, 8, -4
HELPP
Answer:
2a and -5a
8 and -4
hahahah they are separate from each other
2a and -5a simplifies to -3a
8 and -4 simplifies to 4
Explanation:
hope this helps!
We will be looking at the amount of glucose in Shawn's blood today.
What would you expect to see if his digestive system was not properly breaking down food?
Would there be too much, too little or the right amount of glucose in his blood? Explain your answer.
Pr
Answer: It would most likely be little amounts of glucose. Because, the digestive system is not working properly
Explanation:
The way an organism appears is called the
Answer:
phenotype
Explanation:
What is the most common molecule in living things?
OA. CO,
O B. CO
OC. Hy
OD. Hz0
Helppp
Answer:
Explanation:
Ao
Your answer is C: H2O
Living things composed of many molecules. Which are water , fats , carbohydrates , proteins. Gases include oxygen , carbon dioxide , carbon monoxide , hydrogen etc. Body also contains ions such as sodium , phosphate , potassium etc.
Water is body's main component. The amount of Water in human body is around 55- 60 percent. The percent of water in infants is high around 75-85 percent.
PLEASE HELP ME ITS MY FINALE !!!
The chart below shows the gravitational force between each pair of objects.
0.0000025 N
588 N
0.000358 N
0.000000067 N
Which pair of objects is experiencing the least gravitational force?
PREVIOUS
Answer:The answer is the person and the tennis ball :)
Explanation:
how do you think the idea of sustainability influences the work of foresters?
help me
Please answer correctly asap. Answer the following question in at least 3 sentences.
1. Explain how the positions of the Sun and Moon affect the ocean tides.
When the gravitational pull of the Sun and Moon are combined, you get more extreme high and low tides. This explains high and low tides that happen about every two weeks. Note: this figure is not to scale. The Sun is much bigger and farther away.
What is the term for traits an organism possesses that help it survive better?
a.
Permutations
b.
Mutations
c.
Generations
d.
Adaptations
Answer:
d. adaptations
Explanation:
Mutations that are passed to offspring must
OCcur
in
Answer: Gametes
Explanation:
Rivers that have developed over a long period of time are found in wide valleys with flat, low-lying bottoms. These valleys were
created by the removal of rock and soil through the process of _____.
OA. deposition
B
C. erosion
•D. weathering
glaciation
6) Pamela went to the doctor for her yearly check-up. They discovered that she had decreased
estrogen and progesterone levels. After a few months of medication, her levels returned to
normal. She stressed to her doctor that she wanted a child. Her doctor said that with the
hormonal supplements, she should be able to conceive a child.
What systems are affected?
Why?
Answer:
strogen and progesterone levels
Explanation:
she stressed to her doctor
Which best describes the progress of science
Answer:
Scientific ideas are changed when better ones are found.
Explanation:
Which cell type has organelles that are NOT membrane-bound, eukaryotic or prokaryotic? PLEASE HELP
why does the temp of the air increase with the height of the stratosphere?
Answer:
The hot air rises and the cool air falls
Explanation:
Students are given data from an investigation that identified some of the chemical elements present in four different samples
Elements Present in Samples
Sample
Elements
1
2
Hydrogen, phosphorus, and nitrogen
Aluminum, silicon, and copper
Calcium, potassium, and nitrogen
Iron, oxygen, and magnesium
3
4
Which sample was most likely DNA?
Sample 1
Sample 2
Sample 3
Sample 4
Answer:
sample 1
Explanation:
has phosphorus, main chemical compund
Students are given data from an investigation that identified some of the chemical elements present in four different sample correct sample is sample 1.
What defines a chemical element?Chemical element, also called Part, any substance that cannot be decay into simpler subsnces by normal chemical processes.
Thus, sample 1 is correct.
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Can you share some interesting information about HIV?
Answer:
yes HIV can be transmitted through sex or already chewed food like your mom did for you when you were a baby it can also your mothers breast so i hope u drank out of a bottle
Explanation:
Is a chicken egg biotic (living) or abiotic (non-living)? *
biotic (living)
abiotic (non-living)
Answer:
its biotic
Explanation:
Chicken egg is biotic.
What are biotic or abiotic components?
Biotic components are living organisms while abiotic components are nonliving organisms. All biotic components are living components of ecosystem. Bacteria and birds, animals are living components.
Abiotic components are non living components. sunlight, water and temperature are the non living components. Biotic factors are producers, herbivores and omnivores.
Abiotic components are physical and chemical components that act on the living components. In chicken cell the yolk which is living cells.
Biotic components also include the waste from living things and dead organisms. Earth have many biotic components. The surface of Mars has no biotic components.
Therefore, Chicken egg is biotic.
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What kind of bacteria are able to change pure nitrogen into ammonia compounds?
Group of answer choices
nitrifying
decomposing
nitrogen-fixing
denitrifying
Answer:
the anwer is nitrifying fixing as given in your text .
Explanation:
Decomposers also produce ammonia by converting animal waste and dead plants and animals into organic and inorganic materials, including ammonia.
Explain how geography influences genetics
Answer: Environmental variables can influence the movement of gametes, individuals and groups of individuals among natural populations to affect gene flow patterns, which may have a profound influence on the spatial and temporal distribution of genetic variation and further, evolutionary progress of natural populations.
What is antibiotic resistance and why should we be
worried?
Answer: Antibiotic resistance is when bacteria develops a resistance or an immunity against antibiotics. If this evolution/adaptation becomes widespread, our healthcare system could see a mass rise in deaths due to us not being be able to effectively treat the bacteria which is causing harm.
Explanation:
I learned about this
