Answer:
1. Natural
2. Natural
3. Manipulative
4. Manipulative
5. Manipulative
6. Manipulative
7. Natural
Explanation:
1. Checking the blood concentration of BPA in college students in relation to their recent consumption of canned food items is a natural experiment because BPA concentration in blood is not artificially controlled by any means.
2. Comparing the feeding behavior of fish in streams with acidic runoff to that of fish in an unaffected stream is a natural experiment due to the fact that the acidity of the stream is not artificially controlled in any way by the experimenter.
3. Checking the deformity rate in baby birds from nests in pesticide-sprayed fields and that from unsprayed fields would require some manipulations except a sprayed and unsprayed one already existed long before the experiment was given birth to. Otherwise, the sprayed field might need to be artificially created just for the purpose of the experiment.
4. A known carcinogen would need to be administered to a group of the mice. This is manipulative.
5. The tadpoles would need to be artificially exposed to the toxic metals in the laboratory. Manipulative
6. The spraying would need to be carried out artificially in order for the comparison to be made. Manipulative
7. People with diabetes cannot be artificially created. They must have existed naturally long before the experimental design. Natural
A. statements about sex-limited traits are true?
B. Genes for the trait are present in both genders.
C. Growing a beard in males is an example of a sex-limited trait.
D. The traits aren’t expressed physically.
E. Developing green eyes is an example of a sex-limited trait.
Answer: Growing a beard in males is an example of a sex-limited trait.
Match the following terms and definitions.
1. cross-breeding; a method that unionizes gametes of differing genes to create a new individual
recombinant DNA
2. cultured DNA molecules from different biological sources
hybridization
3. a process of breeding organisms because of their specific traits
selective breeding
Answer:
Hybridization - a method that unionizes gametes of differing genes to create a new individual
Recombinant DNA - cultured DNA molecules from different biological sources
Selective breeding - a process of breeding organisms because of their specific traits
Explanation:
In biology, hybridization is the process of creating a hybrid by combining gametes of different species or varieties. An example of a hybrid is a liger - an offspring of a lion and a tiger.
Recombinant DNA is DNA created in the process of genetic recombination. Genetic material from multiple sources is combined, creating sequences that do not occur in the genome naturally.
Selective breeding is the process of breeding organisms with desirable characteristics. For example, a good dog breeder will breed only two completely healthy dogs in order to make sure that the puppies don't have any health issues often associated with the breed.
Hybridization - a method that unionizes gametes of differing genes to create a new individual
Recombinant DNA - cultured DNA molecules from different biological sources
Selective breeding - a process of breeding organisms because of their specific traits
Which of the following limit cell size?
A. Ratio of surface area to volume
B. Rate of moving material across the cells membrane
C. Efficiency of using the information in cell's DNA
D. Efficiency of DNA replication and cell division
E. A & B
F. A, B, & C
G. All the above
Answer:
The answer is F
Explanation:
If you need an explanation let me know
Why is soil important and how do we protect it
Answer:
Soil provides plants with foothold for their roots and holds the necessary nutrients for plants to grow; it filters the rainwater and regulates the discharge of excess rainwater, preventing flooding; it is capable of storing large amounts of organic carbon; it buffers against pollutants, thus protecting groundwater ...
If its rigth can i get brainly esst Please :c
which of the following is not a difference between DNA and RNA ?
Group of answer choices
they have different phosphate groups in their backbones
They have different sugars in their backbones
DNA is a double strand and RNA is a single strand
RNA replaces thymine with uricel
Answer:
I believe the answer is:
They both have different phosphate groups in their backbones
Option A is correct. DNA and RNA have the same phosphate groups in their backbones.
DNA is deoxyribonucleic acid. DNA contains deoxyribose sugar. DNA is usually found in double strands. In DNA thymine is present.
RNA is ribonucleic acid. RNA contains ribose sugar. RNA is usually found in single strands. In RNA thymine is replaced by Uracil.
Nucleic acid is made up of phosphate group, ribose sugar, and nitrogenous bases.
Hence, options B, C, and D are incorrect.
Therefore, Option A is correct. DNA and RNA have the same phosphate groups in their backbones.
To know more about DNA,
https://brainly.com/question/4164107
Please help me need this before 8:00am
The questuon is in the picture
Answer:
I think the answer is D.
Explanation:
I think this because I just did the Periodic Table in school, also they are group by the same color by physical and chemical properties.
How does natural selection lead to the development of antibiotic-resistant bacteria?
Answer:
Antibiotic resistance is a consequence of evolution via natural selection. The antibiotic action is an environmental pressure; those bacteria which have a mutation allowing them to survive will live on to reproduce. They will then pass this trait to their offspring, which will be a fully resistant generation.
Survival of the Fittest (Natural Selection):
When bacteria are initially exposed to an antibiotic, those most susceptible to the antibiotic will die quickly, leaving any surviving bacteria to pass on their resistant features to succeeding generations.
Answer:
This is super easy. In every population you have differences between the individuals in that population. If you apply a selection pressure to that population (like antibiotics to bacteria), you will kill all the bacteria that do not have the ability to withstand the drug. Thus, you have selected for those bacteria that happen to have a better ability to withstand it.
how can the people who take antibiotics increase resistant bacteria populations? Please answer using the scientific method!
Answer:
How do bacteria become resistant to antibiotics? Antibiotic resistance occurs when bacteria change in some way that reduces or eliminates the effectiveness of drugs, chemicals, or other agents designed to cure or prevent infections. The bacteria survive and continue to multiply causing more harm.
How does the volume of urine change over time?
Answer:
An excessive volume of urination for an adult is more than 2.5 liters of urine per day. However, this can vary depending on how much water you drink and what your total body water is. This problem is different from needing to urinate often. hope this helps :)
Explanation:
Which statement explains what happens to older crust during seafloor spreading?
A It is destroyed at coastlines.
B It moves under continents.
C It is destroyed at a mid-ocean ridge.
D It moves away from a mid-ocean ridge.
Answer:
Which statement explains what happens to older crust during seafloor spreading?
Explanation:
D. It moves away from a mid-ocean ridge.
Give brainiest?
Answer:D it moves away from mid ocean ridge
Explanation:
Cells are typically
much smaller.
Wich one is it prokaryotic and eukaryotic
Answer:
eukaryotic!
Explanation:
prokaryotic cells are significantly smaller than eukaryotic cells :)
Answer:
Prokaryotic cell
Explanation:
they are just tiny :)
What are the reactants for photosynthesis?
Explanation:
I think the equation shows that the “ingredients” for photosynthesis are carbon dioxide, water, and light energy.
Plants, algae, and photosynthetic bacteria take in light from the sun, molecules of carbon dioxide from the air, and water molecules from their environment and combine these reactants to produce food (glucose).
Any one can please fill all the labellings
Answer:
Explanation:
1-Ilium
2-Sacroiliac joint
3-Coccyx
4-Pubic crest
5-Acetabulum
These are all parts of the pelvis. The pelvis is located at the lower part of the trunk of the human body. It is between the abdomen and thighs. It is also called the pelvic region. The pelvis plays a vital part in locomotion since the pelvic girdle can transmit the body weight through it.
The_________ of water molecules and the hydrogen bonds between water molecules explain most of water's life-supporting properties. The______ of water molecules to each other helps transport water from the roots to the leaves in plants. When water warms or cools, either break or form. Thus, water absorbs or releases a great deal of_______ , helping to moderate temperatures. Because_______ is less dense than liquid water, it floats and protects lakes and oceans from freezing solid. Water is a versatile . Blood and other biological fluids are aqueous solutions with a diversity of dissolved .
Answer:
The correct words that film in the blanks are;
Polarity
Cohesion
Hydrogen bonds
Heat
Ice
Solvent
Solutes
Explanation:
Water is a highly polar molecule. Its polarity allows it to form strong intermolecular hydrogen bonds which accounts for the forces of cohesion in the water.
The hydrogen bonds form and break with evolution of heat hence accounting for the role of water in temperature regulation.
Ice is less dense than water due to spaces in the solid. Water is regarded as a universal solvent for polar solutes. Blood and other aqueous body clouds usually contains many dissolved solutes.
Can you identify the steps in the scientific method that correspond to Hunt's experiments?
Drag each statement under the step in the scientific method that it demonstrates.
The eggs of mice in plastic cages washed with harsh soap displayed problems during cell division that caused genetic abnormalities.
The eggs of mice in plastic cages washed with harsh soap displayed problems during cell division that caused genetic abnormalities.
The frequency of genetic abnormalities in mice is affected by exposure to bisphenol A.
The frequency of genetic abnormalities in mice is affected by exposure to bisphenol A.
Could bisphenol A from the plastic be affecting the mice in the damaged cages?
Could bisphenol A from the plastic be affecting the mice in the damaged cages?
If mice are exposed to elevated levels of bisphenol A, the frequency of genetic abnormalities in these mice will increase
Answer:
- The eggs of mice in plastic cages washed with harsh soap displayed problems during cell division that caused genetic abnormalities: Observation
- The frequency of genetic abnormalities in mice is affected by exposure to bisphenol A: Hypothesis
- Could bisphenol A from the plastic be affecting the mice in the damaged cages?: Question
- If mice are exposed to elevated levels of bisphenol A, the frequency of genetic abnormalities in these mice will increase: Prediction.
Explanation:
The scientific method is an empirical methodology used by scientific disciplines to acquire knowledge. This method provides a standardized and objective approach to make investigations (and thus obtain knowledge). The scientific method consists of 1-to make a question in order to explore a phenomenon of the natural world; 2- to raise a hypothesis, i.e., a plausible explanation of the question and deriving predictions if the hypothesis is true, 3-to make experiments and/or observations and, finally, 4-to arrive conclusions, which are the answers derived from the experimental procedures.
How might the digestive system and the immune system interact to help protect the body?
Please i need a correct and accurate answer. ++ giving brainliest
Answer:
Around 70% of our immune system dwells in our digestive tract in the form of gut-associated lymphoid tissue (GALT). An important component of our immune system called plasma cells (which give rise to invader-defending antibodies) also reside within the GALT. Our gut is the major channel between the external environment and the internal systems of our body. It is exposed to plenty of germs and harmful invaders such as bacteria and viruses present in food particles on a daily basis. [1] These toxic agents are perceived by the immune system in the gut as being harmful to our body and attacked. That being said, our body does not reject everything we put into it. This process is known as tolerance. When our immune system rejects an otherwise harmless substance, we are labeled as being sensitive or allergic to that food/food ingredient.
Explanation:
Hope this helped!
what reaction must occur to release the energy in atp
Answer:
respiration
Explanation:
The source of the energy required to regenerate ATP is the chemical energy stored in food (e.g. glucose)
best answer gets brainliest 5 star thanks follow and i'll answer your newest question
The relative humidity is 100%, and the temperature is hot. In a few sentences, explain how the weather would change if the temperature drops and becomes cool.
Answer: The Answer is c the relative humidity drops.
Explanation:
Answer:when the temperature drops, there is less heat obviously. that gives less of a chance for it to be humid outside. the relative humidity would drop
Explanation:
In the diagram of a cell below, the structure labeled Xenables the cell to
C.
A)
release energy
B)
store waste products
C)
control nuclear division
D)
manufacture proteins
what organelle is not possessed by all cells
Answer:
Nucleus
Explanation:
Elisa feel tired because she has a condition
Answer:
I'm sorry to hear that.
Answer: Its because she has diabetes.
Explanation: Her cells are not getting enough glucose.
Which is an example of codominance
Answer:
3 I think.... If correct Brainliest will take it :)
Explanation:
Need help ASAP please
Answer:
A. Dominant because it occurs in every generation
Chloroplasts are double membrane organelles with a smooth outer membrane and an inner membrane that is folded into disc-shaped sacs called the thylakoid. Thylakoids contain chlorophyll and other pigments (red, orange, yellow, brown) and are found in stacks
called granum (grana, plural.)
This organelle is used to:
A. perform the process of cellular respiration.
B. expell O2.
C. create ATP.
D. covert solar energy into chemical energy.
Answer:
D. convert solar energy into chemical energy.
Explanation:
Chloroplasts are the organelles that carry out photosynthesis. They contain chlorophyll, which traps light energy from sunlight to power chemical reactions that produce glucose.
The solar energy is converted into chemical energy, which is used to synthesise glucose, along with carbon dioxide and water. The reactions produce glucose and release oxygen as a byproduct.
PLZZ HELP ASAP 10 POINTS + BRAINLIEST TO FIRST CORRECT ANSWER...
ANY FAKE ANSWER WILL BE REPORTED AND DELETED.
A storm surge is characterized by
large hail.
strong winds.
severe lightning.
coastal flooding.
Answer:
A storm surge is characterized by coastal flooding.
Explanation:
A storm surge is a rise in sea level that occurs during tropical cyclones, intense storms also known as typhoons or hurricanes. The storms produce strong winds that push the water into shore, which can lead to flooding. This makes storm surges very dangerous for coastal regions.
I hope this helped :)
Answer:
D. Coastal flooding
( Hope this helps ) <3 ( Give person above brainliest )
what did the famous experiment by Louis Pasteur demonstrate?
Answer:
Explanation:
Louis Pasteur's pasteurization experiment illustrates the fact that the spoilage of liquid was caused by particles in the air rather than the air itself. These experiments were important pieces of evidence supporting the idea of germ theory of disease
What is the approximate value of tan C?
Answer:
.38
Explanation:
I did it
Krusty was told that a certain itching powder was the newest best thing on the market; it even claims to cause 50 % longer lasting itches. Interested in this product, he buys the itching powder and compares it to his usual produce. One test subject (A) is sprinkled with the original itching powder, and another test subject (B) is sprinkled with the Experimental itching power. Subject A reported having itches for 30 minutes, Subject B reported to have itches for 10 hours.
Hi, you've asked an incomplete question. The full question reads;
1. Identify the:
Control GroupIndependent VariableDependent Variable2. Explain whether the data supports the advertisement's claims about its product.
Answer:
Subject AThe "certain itch powder"The time of itchinessExplanation:
1. Remember, the Control group in research often refers to the group in a research experiment that who are not subjected to any treatment, rather they are used as a comparison scale to see how other tested subjects perform.
We also need to note here that the independent variable here refers to a variable or factor that does not change (ie it is independent), but which results in changes in other variables. From the study, the "certain itch powder.""The time of itchiness" is a dependent variable because it does change, or can be affected by the independent variable.2. Remember, the advertisement of the "certain itching" "claims to cause 50% longer lasting itches". Hence, we can conclude that the data support the advertisement claims since subject B did itch over 50% longer than subject A. In fact, we are subject B itched for 10 hours, not the 30 minutes subjet A itched.
After a workout, the muscles in a basketball player's legs are very sore. Which of the following statements best explains why the basketball player experiences this muscle soreness after a workout?How are the processes of photosynthesis and cellular respiration interrelated?
Answer:
1. There is an increase in the amount of lactic acid being produced in the muscle cells during the process of anaerobic respiration.
2. Photosynthesis removes carbon dioxide from the atmosphere and cellular respiration releases carbon dioxide into the atmosphere
Explanation:
Note, medical professionals consider lactic acid a byproduct released when we are engaged in intense physical exercise. Although it is still believed that the increase in the number of lactic acids causes muscle soreness, some medical findings have revealed they have no such effect on muscles.
Put simply, photosynthesis involves a natural cycle where carbon dioxide is released into the atmosphere by humans and animals for plants, and green plants undergo a process where they convert carbon dioxide into oxygen for humans. It is interrelated with cellular respiration in the sense that, cellular respiration also involves a convertion (of glucose) to carbon dioxide released into the atmosphere.
Only ___________ cells can be viewed under an electron microscope because of the radiation it sends out.
An electron microscope provides clearer, more detailed images than light microscopes.
Organellesthat can be viewed under electron microscope are ribosomes, vacuoles, Golgi body, rough endoplasmic reticulum, smooth endoplasmic reticulum, mitochondria, nuclear membrane, nuclear pores, nucleolus.