Answer:
Answer below! : )
Explanation:
Explain 1) The independent variable is the variable the experimenter manipulates or changes, and is assumed to have a direct effect on the dependent variable. The dependent variable is the variable being tested and measured in an experiment, and is dependent on the independent variable. 2) Testing only one variable at a time lets you analyze the results of your experiment to see how much a single change affected the result. If you're testing two variables at a time, you won't be able to tell which variable was responsible for the result. 3) The control group and experimental group are compared against each other in an experiment. The only difference between the two groups is that the independent variable is changed in the experimental group. The independent variable is "controlled" or held constant in the control group 4) Not sure about this one sorry! 5) hypothesizing, observing, and experimenting. 6) This rule says that where you have one situation that leads to an effect, and another which does not, and the only difference is the presence of a single factor in the first situation, we can infer this factor as the cause of the effect. 7) No matter how carefully observations and experiments are performed, it cannot be ensured that every possible factor is the same in every observation. 8) Munsell Charts are used to provide standard descriptions and names of color. 9) Nitrogen, phosphorus, and potassium. 10) Water table, also called groundwater table, is the upper level of an underground surface in which the soil or rocks are permanently saturated with water. 11) Humus significantly affects the bulk density of soil and contributes to its retention of moisture and nutrients. 12) Texture refers to the size of the particles that make up the soil. The terms sand, silt, and clay refer to the relative sizes of the soil particles. The combined portions of sand, silt, and clay in a soil determine its textural classification. 13) The main difference between sand silt and clay is their particle size. Sand particles are larger in size while clay particles are extremely fine, and silt particles are somewhere in between sand and clay particles. Sand, silt, and clay are the main mineral particles in the soil that affect its texture 14) Mineral matter is derived from the constituents of the parent material. Organic matter. The nature and abundance of iron. Moisture content. 15) In some mineral soils aluminum can be dissolved at pH levels below 5.0 becoming toxic to plant growth. Soil pH may also affect the availability of plant nutrients. Nutrients are most available to plants in the optimum 5.5 to 7.0 range. 16) Phosphorus is essential for cell division and growth and promotes plant maturation. 17) Aspect of soil porosity concerns the oxygen found within these pore spaces. All plants need oxygen for respiration, so well-aerated soil is important for growing crops. 18) The ground above the water table may be wet to a certain degree, but it does not stay saturated. The dirt and rock in this unsaturated zone contain air and some water and support the vegetation on the Earth.
I did most of them! I didn't do the "Identify". I hope this helps! : )
Sorry if I wrote a lot!!
what is this pointing too
c- coarse adjustment knob
d- stage clip
4. Who discovered the first known case of a typhoid carrier?
Answer:
Mary Mallon (September 23, 1869 – November 11, 1938), also known as Typhoid Mary, was an Irish-born cook believed to have infected 53 people with typhoid fever, three of whom died, and the first person in the United States identified as an asymptomatic carrier of the disease pathogen, Salmonella typhi.
Answer:
mary mallon
Explanation:
Mary Mallon, the first known case of a healthy carrier in the United States, was proven responsible for the contamination of at least one hundred and twenty two people, including five dead
Erythrocytes live for a maximum of.......days whereas platelets live for ....... days
Answer:
[tex]120 \: days;10 \: days.[/tex]
Explanation:
Thanks!!!!!
The movement of oxygen from the blood into the systemic cells is referred to as
O a pulmonary ventilation
O b. alveolar gas exchange.
O c. systemic gas exchange
O d. gas transport
CLEAR MY CHOICE
OMG I NEED HELP RN
Simplify.
6X2+15
21
27
46
51
Answer:
27
Explanation:
6×2+15........6×2=6+6=12
12+15
27
36. Which of the following statement is not true about the properties of an acid?
a. Taste sour
b. Turns litmus paper to blue
c. Reacts with metal
d. Corrodes fabric, skin, and paper
Answer:
c
Explanation:
Answer:
B
Explanation:
b)Acid turns litmus paper to red not blue
4. There is a new viral disease in the human population. You found that the
isolated viral particles do not lyse human cells when cultured together. You
also found the virus contained a ssRNA genome and curiously, you found
the viral sequences in the host cell genome. What Class of virus do you
think you have? How would you confirm this?
Answer:
COVI-19
Explanation:
A bacterial cell usually contains a single loop of DNA that is located in the cytoplasm of the cell and is not surrounded by a nuclear membrane. Some bacteria have additional loops of DNA called plasmids. Plasmids can be used for genetic engineering because DNA from other organisms can be spliced into a plasmid loop. For example, scientists in the late 20th century discovered a way to insert the portion of human DNA that codes for the protein insulin into plasmid E. coli bacteria. Which statement best explains why these genetically modified bacteria have been useful to society?
A. Human diabetics are now more resistant to bacteria
B. The bacteria are resistant to human diabetics
C. The bacteria can now make their own insulin
D. the bacteria are used to produce cheap insulin.
Answer: A is the correct answer.
because for the treatment of one type of diabetes insulin should be provided but isolation of insulin and production is so costly.
but as DNA recombination has developed we can use bacterial replication system to produce insulin. they replicate very fast so large amount of insulin will be produced and then it can isolated.
but we also know that insulin of bacteria needs some modification before it can be used in human.
if want more info ask here. hope it helps.
What does mRNA do?
1. carry
carry coded message from the genes to the ribosomes where proteins are built
2. carry amino acids to the ribosomes
3. make up ribosomes
4. help with RNA splicing
Answer:
The answer is 1. Carry coded message from the genes to the ribosomes where proteins are built.
Explanation:
mRNA stands for messenger RNA, so 1 would be correct.
Hope this helps!!
Question 9 of 10
Which is not a basic function of a cell?
A. Storing energy
B. Destroying energy
C. Releasing energy
D. Obtaining energy
SUBMIT
Answer:
B
Explanation:
a cell does NOT destroy energy
Which of the following is a characteristic of hydrologic fracturing?
A. Large amounts of water force open cracks in rocks
B. Removal of topsoil to reach water supply
C. Transportation of coal via waterways
D. Use of machinery underground to mine coal
Answer:
A. Large amounts of water force open cracks in rocks
Explanation:
Hydraulic fracturing, or fracking, is a drilling method used to extract petroleum (oil) or natural gas from deep in the Earth. In the fracking process, cracks in and below the Earth's surface are opened and widened by injecting water, chemicals, and sand at high pressure.
A is basically explaining this the same way. Forcing cracks in the ground with liquids.
Hopefully I was a help to you. If not I am sorry and I wish you the most wonderful of days. :)
History of Present Problem:
Frank was driving home after a long day at work. It was late and he was having problems driving in the dark with so
much traffic. He was forced to take a detour and felt tired, so he took another sip of soda. "What would I do without
sugar and caffeine?" he mumbled to himself. Frank realized that he should probably stop the car as he noticed his hands
begin to shake, but he continued anyway. Rounding a corner, he realized that he was having trouble focusing on the
road. He tried to blink away the blurriness and shook his head, but things did not change. In an instant, the car slipped
off the road and hit a tree. "What was that?" exclaimed Frank to the night air. He quickly got out of the car and checked
himself out. Other than the shock of the accident, Frank seemed to be okay. He pulled out his cell phone and called his
wife, Stacey, to come pick him up. He then called to report the accident to the police and his insurance agent. His wife
arrived about an hour later and looked very concerned when she saw Frank sitting in the police car. "Why aren't you
going to the hospital?" screamed Stacey. "Were you drinking again?" "I'm fine, and no I wasn't drinking. Check with
Sergeant Eversman if you do not believe me. I lost focus; it has been a long day and my vision is a little off. This is too
much stress. Please, I just want to go home." The emergency staff checked him out and recommended he go to the
hospital for evaluation but Frank declined. They drove home, but Stacey continued to badger Frank about going to the
hospital.
Answer:
Frank might have been an alcoholic.
Explanation:
Because his wife,Stacey,asked him if he had been drinking and he also didnt want to go to the hospital for evaluation.
3. Ecosystems have
edge.
Answer:
The edge effect is an ecological concept that describes how there is a greater diversity of life in the region where the edges two adjacent ecosystems overlap, such as land/water, or forest/grassland.
Explanation:
hope im right
. What could explain how these rocks got so far apart?
Answer:
What could explain how these rocks got so far apart? The United States and Portugal are parts of different plates. ... The United States and Portugal are parts of different plates. The plates slowly moved far apart as soft, solid rock from underneath got added to the edges of the plates over millions of years.
Explanation:
Angular Momentum can be expressed
as which of the following
a. L = MPR
b. L = VRM
c. L = VPM
What is the biology
Answer:
science that studies living things
Explanation:
it includes plants and animals so basically anything that has life
Answer:
Biology is the study of living organisms, divided into many specialized fields that cover their morphology, physiology, anatomy, behaviour, origin, and distribution.
Explanation: Branches of biology are different topics related to biology; for example the 3 major branches of biology are:
Botany, also called plant science, plant biology or phytology, is the science of plant life and a branch of biology. A botanist, plant scientist or phytologist is a scientist who specialises in this field
Zoology is the branch of biology that studies the animal kingdom, including the structure, embryology, evolution, classification, habits, and distribution of all animals, both living and extinct, and how they interact with their ecosystems.
Microbiology is the study of microorganisms, those being unicellular, multicellular, or acellular. Microbiology encompasses numerous sub-disciplines including virology, parasitology, mycology and bacteriology.
PLEASE HELP WITH THIS ONE QUESTION
Answer:
perfect cube shape
Explanation:
the shape of a cell is perfectly cube- shape then its volume must be calculated with an equation:
Height×Width×number of sides and number of boxes
Surface= area of volume ratio is calculated with an equation
Area /volume
if a cell has large surface area to volume into ratio means it has greater exposure to the environment.It means that flow of nutrients and gases move freely in the small cell compared to large cell.
help pls pls help dfmndbfndsbfnsdmfbmnbfbnmdbfmn
What do you need help with?
50 POINTS+ BRAINLIST
During the course of their work, healthcare professionals can be exposed to all kinds of germs. Three of these are viruses, bacteria, and fungi. Draw a Venn diagram that compares and contrasts these three pathogens. Give at least one example of diseases caused by each.
You don't actually need to draw a diagram, just give examples.
clearly is if the fungi get to u the first thing that gonna happn is you're going to get cancer and about bacteria stomach sickness diareah flu head ache and clearly its going to be hard for u to breath
Name a type of scientist to help people recover from an illness. how do they do this?
Answer:
Pathologist
Explanation:
A pathologist plays a crucial role in medical care. Sometimes called “the doctor's doctor,” they help the treating physician diagnose a patient and pinpoint the best course of treatment
Please help! will mark brainlist!!!
Which object is hotter in terms of its kinetic energy: the cup of coffee or the iceberg? Explain the reason for your answer in terms of your understanding of the kinetic molecular theory of matter.
Answer:
red-hot iron bar
Explanation:
An iceberg could even contain more heat energy than a cup of coffee or a red-hot iron bar. That's because its bigger and contains so many more molecules, each of which has some heat energy. The coffee and the iron bar are hotter (have a higher temperature), but the iceberg holds more heat because it's bigger.
Provide a potential hypothesis for the research topic and
explain whether the data support it. Also, explain the
reasons for the observed data trends.
Answer:
i think that the higher the body temperature the higher the cellular respiration
Explanation:
The graph indicates the relationship between body temperature and cellular respiration. As the body temperature increases, more ATP is produced, but after a certain temperature, there is no cellular respiration.
What is cellular respiration?In cellular respiration, the cell breaks down glucose and forms ATP. Glucose is broken down by glycolysis, the Krebs cycle, the electron transport chain, and finally ATP is formed.
In the graph, it is shown that an increase in body temperature is related to an increase in ATP molecule production. ATP molecule production is nearly zero at 80 degrees body temperature. As the temperature increases to 100 degrees, ATP production increases to nearly 50.
After 100 degrees, the body temperature rises, but there is a decrease in ATP production. After 100 degrees, the enzymes required for cellular respiration don't work. Hence, a decline in ATP is seen.
Hence, after a certain temperature, the enzymes involved in cellular respiration don't function as their structure changes.
To learn more about cellular respiration, refer to the following link:
https://brainly.com/question/7152488
# SPJ2
Which of the following is NOT a function of the nervous system?
a. receives information about your body
c. signals a response to stimuli
b. maintains homeostasis
d all of these are nervous system functions
Answer:
d
Explanation:
all of these are nervous system function
Answer:
D
Explanation:
All of these are nervous system functions, your nervous system controls your whole body. Since your nervous system is comprised of your brain and other things like the brain stem, everything in your body you can imagine is from the nervous system.
What make Eukaryotic cells different from Prokaryotic Cells?
Group of answer choices
Eukaryotic cells have membrane bound organelles and more complex structure
Eukaryotic cells do not have a nucleus and are unicellular
Eukaryotic cells all have cell walls and include bacteria and plants
Eukaryotic cells are mainly bacteria
Answer:
Eukaryotic cells have a membrane bound organelles and more complex structure
Explanation:
How would a drug that blocks acetylcholinesterase (Za) activity at the motor end plate aff
ect skeletal
muscle contractions?
A. It would make the muscles less excitable.
B. It would prolong the duration of muscle contractions.
C. It would cause flaccid paralysis (relaxed muscles unable to contract).
D. It would have no effect on skeletal muscle contractions.
Answer:
C
Explanation:
It would cause flaccid paralysis (relaxed muscles unable to contract).
How can antibiotic resistance be minimized?
Explanation:
There are many ways that drug-resistant infections can be prevented: immunization, safe food preparation, handwashing, and using antibiotics as directed and only when necessary. In addition, preventing infections also prevents the spread of resistant bacteria.
What is a qualitative observation?
Answer:
A qualitative observation involves the use of five sensory organs, sight, smell, taste, touch, and hearing, and their function to examine the attributes. Being subjective in nature, it focuses on the characteristics and qualities of the variables rather than the numerical value.
Explanation:
mark as a brainliest answer if it helps you
Answer:
A qualitative observation involves the use of five sensory organs , sight,smell ,taste,touch and hearing
Explanation:
A qualitative observation involves the use of five sensory organs, sight, smell, taste, touch, and hearing, and their function to examine the attributes. Being subjective in nature, it focuses on the characteristics and qualities of the variables rather than the numerical value. organs, sight, smell, taste, touch, and hearing, and their function to examine the attributes. Being subjective in nature, it focuses on the characteristics and qualities of the variables rather than the numerical value.
Need help ASAPbdbssnnsjsnsns
If both parents are (hetero-zygous),
what percent of their offspring would be (homo-zygous) recessive?
Question 2 options:
100%
25%
50%
75%
A 100-pound bag of fertilizer is marked 0-15-15. How many pounds of nitrogen,
available phosphate, and potassium are there in the bag?
Fertilizers are the chemical element for improvement of productivity of plants. Here, 0-15-15 shows nitrogen 70 pounds, phosphorous 15 pounds and potassium 15 pounds.
Why to label fertilizer?Labeling of fertilizer is to show the content of major nutrients. They are usually labeled with three numbers i.e., N-P-K label, i.e., Nitrogen-Phosphorous-potassium label , such as, 0-15-15. the first number is the percentage of nitrogen, second is for phosphorus and third is for potassium.
Thus, here as per the marking, the quantity of the nutrients are: nitrogen 70 pounds, phosphorous 15 pounds and potassium 15 pounds.
For more information about fertilizers visit:
https://brainly.com/question/3204813