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Answer:
A
Explanation:
why might scientists be wary of the results of a single experiment testing a particular treatment, even when the results are peer reviewed and statistically significant
Answer:
The results may not be true for humans if the experiment used a model organism.
Explanation:
An animal model is an animal species used in research that mimics diverse human traits/features such as, for example, human response to certain diseases. Thus, animal models may provide useful information related to human developmental biology and human diseases (i.e., prevention, diagnosis, treatment, etc). However, in general, experiments involving animal models cannot be used to predict human outcomes. For example, in genetics, animal models exhibit different features to humans, including but not limited to genomes (i.e., different number and structure of chromosomes), genes, gene regulatory pathways, epigenetics gene regulatory mechanisms, etc. In consequence, animal tests may be unreliable and therefore their results cannot be directly extrapolated to human subjects.
The graph shows the growth and reproduction in 4 different cells, A, B, C, and D, over time. Use the graph to answer questions below.
Answer: A.
Explanation:
Cells generally have a relatively short lifestyle in that they grow, divide and then die off. This is not the case with cancerous cells as those ones mutate and then multiply such that they eventually form a tumor.
Looking at the graph, most of the cells are remaining at a lower or manageable number because they are dying off. Cell A on the other hand is simply increasing in number which means that it is a cancerous cell as it is increasing its number by mutating instead of dying off like other cells would.
'Complete the diagram to show the results you would see at 40°C and 60°C'
Answeryeah it’s that one
Explanation: yup, definitely that one.
Which of the following are steps for balancing chemical equations? Check all that apply. A. Subtract the total amount of elements from the products. B. Add all the elements together. O c. Write the chemical equation using formulas and symbols. D. Count the atoms in each substance in the reactants and products.
Answer:
c d
Explanation:
Wind energy is a sustainable and renewable alternative to burning fossil fuels, with a much smaller impact on the environment.
What are some advantages of using wind as a source of energy?
Answer:
becsuse it rejects pollunation of air and environment
Energy from the sun, water, air, wood, and soil are all examples of what kind of energy?
ecological energy
organic energy
renewable energy
solar energy
Answer:
Renewable energy
Explanation:
All of these energy sources are ecologically renewable, and therefore are classified as renewable recources that provide renewable energy.
what is not a principle of the cell theory
The cell theory consists of:
1. all living organisms are made up of cells
2. cells are the basic structural/organizational unit of all organisms
3. all cells come from pre-existing cells
______ farming, or production for cash, usually take place on large holdings.
The hypothesis that continents have slowly moved to their current locations is called ___.
O magnetic reversal
O continental drift
O convection
Answer:
Continental drift
Explanation:
saw it on quizlet
Endo and exocytosis:
A. Passive transport with the concentration gradient, requiring no energy.
B. Active transport of large molecules with the concentration gradient, thus requiring no energy.
C. Active transport of large molecules in and out of the cell. Requires energy.
Answer:
C. Active transport of large molecules in and out of the cell. Requires energy.
Explanation:
endo- the formal definition is “endometrial glands and stroma existing outside the endometrial cavity”. Essentially, it is tissue that resembles the endometrium (lining of the uterus), that exists other places. Most often, it is found in the pelvic peritoneum, or the lining of our abdominal cavity.
Exocytosis describes the process of vesicles fusing with the plasma membrane and releasing their contents to the outside of the cell. Both endocytosis and exocytosis are active transport processes.
Answer:
C. Active transport of large molecules in and out of the cell. Requires energy.
Explanation:
Endocytosis and exocytosis is an active transport of large molecules in and out of the cell, which requires energy.
Following glycolysis and the citric acid cycle, but before the electron transport chain and oxidative phosphorylation, the carbon skeleton of glucose has been broken down to CO2 with some net gain of ATP. Most of the energy from the original glucose molecule at that point in the process, however, is in the form of ____
Answer:
The correct answer is - NADH.
Explanation:
Glycolysis is a multistep part of cellular respiration in which food is broken down to give off energy in a form of ATP. In glycolysis, the end product is converted to Acetyl-CoA using the pyruvate dehydrogenase enzyme.
During the citric acid cycle and oxidative phosphorylation, there is NAD reduces and turns to NADH that moves to the mitochondria. It is converted to energy using redox reactions. Most of the energy from original glucose molecules are transported and exists in the forms of NAD to NADH.
What characteristics of the molecules being transported determines how they will cross the membrane?
A. Size and mass
B. Passive or active
C. Polarity and size
D. Charge and structure
Answer:
C. Polarity and size
Explanation:
Three primary factors determine whether a molecule will diffuse across a cell membrane: concentration, charge and size.
Answer:
C. Polarity and size
Explanation:
The polarity and size of the molecules being transported determines, how they will cross the membrane.
case study: Explain the relationship among homeostasis, defective mitochondria, and the symptoms caused by LHON.
Answer:
Because malfunctioning mitochondria disrupts the body's equilibrium, there is a strong link between homeostasis,
defective mitochondria, and the symptoms induced by
LHON.
The condition of homeostasis in the body was also
affected by symptoms caused by Leber's hereditary optic
neuropathy (LHON).
hope it helps
Explanation:
-
An individual observation can become a scientific theory.
False
True
Answer:
the answer is false: A scientific theory is a hypothesis that has been extensively tested, evaluated by the scientific community, and is strongly supported. Theories often describe a large set of observations, and provide a cohesive explanation for those observations. An individual cannot come up with a theory.
hope this helps
have a good day :)
Explanation:
Answer:
false
Explanation:
Provide a detailed description between how the circulatory and respiratory systems work together.
Answer:
How they work together!
Explanation:
They both work together to circulate oxygen and blood throughout the body. Oxygen and blood are brought to the organs and tissues throughout the body via the arteries. They also bring nutrients to the cells.
PLEASE HELP I WILL GIVE BRAINLIEST:)
Answer:
agitated option is correct
Explanation:
because tectonic plates
please mark me as brianliest
(Reply with the answer or get reported) Ty to whoever answers me :]
Answer:
Allele frequency
Explanation:
situation 2: Throwing of garbage
Mat wants to throw his garbage inside the trash bin. Help him shoot his garbage right at the trash can by illustrating the trajectory. Explain below how you ended up with that trajectory.
#pa answer po (◠‿◕)
I wanna throw my garbage too
change to passive voice:the police caught the boy red handed
How do you think the autonomic nervous system works with other body systems?
Explanation:
The autonomic nervous system regulates certain body processes, such as blood pressure and the rate of breathing. This system works automatically (autonomously), without a person's conscious effort. Disorders of the autonomic nervous system can affect any body part or process.
Are your two DNA strands similar? How do?
The expression of both alleles for flower color produces a new pink. this illustrates incomplete dominance. Which of the following would be correct phenotype ratio from a cross between two heterozygous pink flowers
Answer:
C is the answer
1
In order to keep up with the food demands of an increasing human population, farmers use fertilizers and other agricultural
technologies to grow and harvest more food. How do fertilizers negatively impact
the environment?
OA. The rate of nutrient depletion increases in soil that has been fertilized.
OB. Run-off from fertilized land increases nitrogen levels in ecosystems and encourages algal growth.
OC. Fertilizers are difficult to apply and require heavy machinery which damage land.
OD. Fertilizers allow crops to grow bigger and faster, so they can feed more people.
Answer:
OB. Run-off from fertilized land increases nitrogen levels in ecosystems and encourages algal growth. is the correct answer.
Explanation:
because This in turn is leading to global warming and weather changes.
A. The rate of nutrient depletion increases in soil that has been fertilized.
It increases nitrogen for better yield, but it affects the nitrogen cycle.
what is the relationship between man and the earth
Explanation:
The earth was created to assist us in our progression toward Eternal Life. The earth provides plants and animals for our food. Man is to rule over the earth by tilling, protecting, and preserving it. In other words, man is to be a steward over the earth.
How does the carbon in grass become part of a lion?
you are desighing a new product that requires the use of stable honreactive gas which gas would be most suit able
Answer:
Noble Gases
Explanation:
Noble gases are the most stable due to having the maximum number of valence electrons their outer shell can hold.
Gases such as Helium, Neon, Krypton and Xenon.
Answer:
Noble gases or Neon
Explanation:
Just did the test
A cat with LONG HAIR (heterozygous) is a carrier of the short hair allele. Its mate has SHORT HAIR. Use a Punnett Square to determine the probability of their offspring having LONG HAIR.
Group of answer choices
25%
100%
0%
50%
75%
Answer:
50%
Explanation:
Hi there!
We are given the hair types of two cats
The first one has long hair, and it's heterozygous, meaning it has one dominant, and one recessive allele. We are given that it is a carrier of the short hair allele, meaning in its genotype, it has the short hair gene (that doesn't necessarily mean it's there in its phenotype). However, since it has long hair (genotype), that means that the long hair allele is dominant (the gene that will always show), and the short haired one is recessive (the gene that gets "covered up" by the dominant allele). Let's say the genotype of the long haired cat is Tt, where T is the long hair, and t is the short hair
The second cat has short hair, and as we have mentioned above, the allele for short hair is recessive, so the short haired cat has 2 copies of the short hair allele. Its genotype is tt
Please see below for the Punnett Square
Hope this helps! :)
If a mineral has a mass of 20 and a volume of 4, What is its density?
Answer:
5 g/cm²
Explanation:
Density = Mass/Volume = 20/4 = 5
Therefore, the density of the mineral is 5 g/cm². (Assuming those are the proper units).
Explanation:
d =mass/volume
d=20/4 =5
A roan cow is crossed with a red cow. What percent of the offspring will be roan?
Answer:
Red cows have a dominant red allele and white cows have a dominant white allele. When a red cow mates with a white bull, they can have offspring that have the color that is called Roan which is a red and white spotted appearance. This is an example of co-dominance
Explanation:
CORRECT ME IF I AM WRONG
If a roan cow is crossed with a red cow, the percentage of roan cow in the offspring will be 50%.
CO-DOMINANCE:A roan cow phenotype is a product of co-dominance between red (R) and white (W) alleles. This means that a roan cow will have a RW genotype. If a roan cow is crossed with a red cow i.e. RW × RR, the gametes produced by each cow is as follows:RW - R and WRR - R and RUsing a punnet square, the following offsprings of cow will be produced: 2RR, and 2RW. This means that the percentage of roan cows in the offspring will be 50% i.e. ½ × 100 = 50%.Therefore, If a roan cow is crossed with a red cow, the percentage of roan cow in the offspring will be 50%.
Learn more about co-dominance at: https://brainly.com/question/9881046