Scientists are trying to find the causative agent for a new disease in chicken. They grow a culture of what they think is the causative agent. They then inoculate a large group of healthy representative chicken with the agent, but none of the chicken become ill. Applying the Germ Theory of Disease, which of the following could explain the results (choose all correct answers)?
A. They isolated resident microbiota (look in your textbook for definition)
B. The suspected causative agent is found in healthy chickens.
C. The true causative agent is not an infectious disease.
D. The suspected causative agent is an infectious disease.
How does ocean expansion occur?
Answer:
Global sea level has been rising over the past century, and the rate has increased in recent decades. ... The two major causes of global sea level rise are thermal expansion caused by warming of the ocean (since water expands as it warms) and increased melting of land-based ice, such as glaciers and ice sheets.
Explanation:
Hope this helps
what is the meaning of respiration
Answer:
in physiology respiration is the movement of oxygen from the outside environment to the cells with tissues and the removal of carbon dioxide in the opposite direction .. in contrast exhalation is usually a passive process
hope it's helpful
Answer:
The process of breathing.
Explanation:
The lungs and respiratory system allow us to breathe. They bring oxygen into our bodies (called inspiration, or inhalation) and send carbon dioxide out (called expiration, or exhalation). This exchange of oxygen and carbon dioxide is called respiration.
**Physiological respiration and cellular respiration are not the same. People sometimes use the word "respiration" to refer to the process of cellular respiration, which is a cellular process in which carbohydrates are converted into energy. The two are related processes, but they are not the same.
DNA is composed of peating structural units
called
is the five-carbon sugar found in
DNA.
DONE
Answer:
Explanation:
if u mean repeating structural units of the DNA they are nucelotides or nucleotide bases.
and Yes, there is a five-carbon sugar in the DNA. It's called deoxyribose.
1. The first person to observe cells was?
Answer:
robert hooke
Explanation:
Molecule 1 on the diagram has the nitrogenous base sequence TCAAGT.
Which set of bases in Molecule 2 can bond to this sequence in a
complementary way?
1.)AGTACA
2.)AGUUCA
3.)UCAAGU
4.)UCAATA
Answer:
3
Explanation:
because because you need the same explanation as you take in picture
Please help with this!!!!
Answer:
Florida would be more susceptible to flooding from nearby hurricanes
This is the question I need help with.
Answer:
the answer is all of these
what is life in general.
Answer:
Gift, mission, prison
Beautiful lie
A person would weigh
more on_________
than on_______
because.....
Please help me with this
Answer:
Its a semipermaeble mambrane
Explanation:
Semipermeable membrane is a type of biological or synthetic, polymeric membrane that will allow certain molecules or ions to pass through it by diffusion.
What is the relationship between climate change and greenhouse gases?
Answer:
Greenhouse gases build up in the atmosphere, trapping warmth in.
Which would best keep the oxygen cycle stable?
O A. Dumping toxic chemicals into the ocean
O B. Cutting down jungles to create farmland
O C. Reducing the amount of deforestation
O D. Eliminating parks in large cities
Answer:
C
Explanation:
All of the other answers would lead to the oxygen not being stable.
A student set up an experiment to show that carbon dioxide is consumed by Elodea plants during photosynthesis. She filled two test tubes with distilled water and placed a piece of Elodea in one of the tubes. She added a drop of phenol red which is a pH indicator to both tubes. She blew in each tube to add carbon dioxide, which caused the distilled water to become more acidic. She exposed both tubes to the light and recorded any color changes in the liquid in the tubes. What is the negative control in this experiment
Answer: The NEGATIVE CONTROl is the test tube that is filled with ONLY distilled water.
Explanation:
A negative control of an experiment is carried out alongside the main primary experiment except that the treatment is changed to something that is predicted to have no result. In the negative control, the student does not expect any response. This would help the student compare the result of a new experiment against an already known existing results.
Analysing the experiment carried out by the student, She filled two test tubes with distilled water and placed a piece of Elodea in one of the tubes, leaving the other without a plant. The other test tube that contains only distilled water is the negative control because she wasn't expecting any result from it. It's also served as a control sample to the primary experiment. This is observed as she blew in each tube to add carbon dioxide, which caused the distilled water to become more acidic. This would help the student know that the that experimental results are valid and to ensure that time is saved.
what is the menstrual cycle
2.2.1
Differentiate between malnutrition and undernutrition.d
(2)
2.2.2
Which disease is caused by deficiency of vitamin C?
223
Why did the sailors suffer from the disease mentioned in OUESTION
Explanation:
Malnutritionin broad sense means bad nutrition.
Undernutrition is the taking in of inadequate amounts of major food substancesleadind to deficiency diseases eg. kwashiorkor.
Defecieny disease of inadequate amounts of Vitamin C include:
Scurvy: swelling of gum and bleeding around teeth.Body weakness, pains, swelling of joint and poor healing of woundsSailors suffer from scurvy and body w weakness because they don't eat enough Vitamin C in other words they don't eat enough fresh fruits e.g lemon, oranges, pawpaw and green vegetables
It is often difficult to save individual species
this is true, but where is the problem? or do i just not see it?
40 in 2000 US Caucasian newborns have Tay Sachs Disease. T for normal is dominant over t for Tay sachs Disease.
a.) What percent of the above population have Tay Sachs Disease (tt or q2)?
b.) Calculate the allelic frequencies of p and q for this example
c.) Now, calculate the genotypic frequencies for the population
Answer:
b
Explanation:
because its the only responsible answer and I dint understand how to do this
Explain the process in which hormones secreted by the pancreas function with respect to increased glucose levels in the blood
Answer:
Gastrin: This hormone aids digestion by stimulating certain cells in the stomach to produce acid. Glucagon: Glucagon helps insulin maintain normal blood glucose by working in the opposite way of insulin. It stimulates your cells to release glucose, and this raises your blood glucose levels.
Explanation:
What are wildfires? (With detail)
Answer:
A wildfire is an unplanned fire that burns in a natural area such as a forest, grassland, or prairie. Wildfires are often caused by human activity or a natural phenomenon such as lightning, and they can happen at any time or anywhere. In 50% of wildfires recorded, it is not known how they started.
Answer:
sự kiện lửa phát sinh trong một khu rừng, tác động hoặc làm tiêu hủy một số hoặc toàn bộ các thành phần của khu rừng đó.
Explanatin
The rocky material left behind by a retreating glacier forms what is called a moraine. When primary succession occurs on a moraine, which life-forms will help create the soil by breaking down bare rock?
A Insects
B Lichens
C Grasses
D Deciduous trees
Answer:
The correct answer is - B. Lichens.
Explanation:
Lichens are one of the pioneer species that can grow on bare rock such as moraine and help make soil for further ecological succession and making ground for other species.
Breaking the bare rocks to convert into the soil is part of the primary succession. Lichens are colonized over these rocks and they contain acid which leads to the breakdown of the moraine and other rocks.
what kind of hormone stores glucose if its in excesse
Answer:
A hormone that tells cells in your liver and muscles to convert glycogen into glucose and release it into your blood so your cells can use it for energy.
What did Darwin discover about plants from his phototropism experiments?
Answer:
https://www.biology-pages.info/T/Tropisms.html
Explanation:
This link holds all the information you need :D
in which terrestrial biome can you find tress that produce cones instead of flowers and needles instead of leaves?
Answer:
I think coniferous forest is the answer
Answer:
Coniferous forest and Lower
complementary strand of DNA?
DNA Strand 1: AATCGGTAC
Answer:
TTAGCCATG
Explanation:
Deoxyribonucleic acid (DNA) is a double helix molecule made up of two complementary polynucleotide strands oriented antiparallel to each other. Each nucleotide in both DNA strands is composed of a five-carbon sugar (deoxyribose), a phosphate group and a nitrogenous base. In DNA, there are four types of nitrogenous bases: Thymine, Guanine, Adenine and Cytosine (in RNA, Uracil replace Thymine). According to the base-pairing rules, Adenine always pairs with Thymine through two hydrogen bonds, whereas Guanine always pairs with Cytosine through three hydrogen bonds.
Sample Food Chain
Leaf------> Caterpillar--------> Chameleon---------> Snake-----------> Mongoose
Looking at the above picture, what is true?
A) The Mongoose is the tertiary consumer
B) The chameleon eats the snake
C) The chameleon is an autotroph
D) If Mongoose is removed, snake population would increase.
Answer:
D) if mongoose removed snake population would increase
Which of the following is not true about inflammation
a) it acts to creat a immune system memory
b) helps prevent the spread of an infection to surrounding tissues
c) if it becomes widespread, a fever may result
d) it acts disinfect and clean injured tissues
Which of these choices allows people to pass down survival techniques from
one generation to the next?
A. Communication
B. Foraging
C. Domestication
D. Clothing
Answer: Communication
Answer:
A. communication of course
Explanation:
chromosomes with one arm very small and other very long called
Answer:
Acrocentric
Explanation:
hope this is right
What are some ways we can reduce climate change
Power your home with renewable energy and speak up!
