Prior to the invention of refrigeration, meat was often preserved by soaking it in brine (a solution of water with a high concentration of salt) to kill any microorganisms that might have tried to use the meat as their own food source. Which of the following BEST explains how a brine solution could be lethal to those microorganisms?
Water would move out of the cells of the microorganisms by osmosis and the cytoplasm would become dehydrated, killing the cells.
A healthy environment depends on biogeochemical cycles maintaining a balance of input and output. High levels of nitrogenous compounds in the waterways can cause an algal bloom. How does an algal bloom affect a marine ecosystem?
A.) It decreases the carbon dioxide in the water, creating a toxic environment.
B.) It decreases oxygen in the water, creating a toxic environment.
C.) It increases the carbon dioxide in the water, stimulating plant growth.
D.) It increases the oxygen in the water, stimulating plankton growth.
B.) It decreases oxygen in the water, creating a toxic environment.
Also called smooth muscles , they are involuntary and function automatically without conscious will they are found in the internal organs of the body such as the digestive or respiratory system
PLS HELP ASAP WILL MARK BRAINLIEST!
Question 3(Multiple Choice Worth 2 points)
(6.02 MC)Innovative ideas may someday lead to a new way of addressing significant marine issues. Which of the following should be considered when evaluating the costs and benefits of a new innovative process?
Cost to build
Effort and time to implement
Maintenance and recurring costs
I and II only
I and III only
II and III only
I, II, and III
Question 4(Multiple Choice Worth 2 points)
(6.02 LC)Which of the following factors would best contribute to a measurement of environmental quality?
Average temperature
Water clarity
Salinity levels
Average speed of sound
Question 5(Multiple Choice Worth 2 points)
(6.02 MC)Two new products are competing for grant money, with the goal of cleaning up the marine environment. Each product removes plastic from the ocean.
Product 1 can be used in the open ocean and requires monitoring once every three months to retrieve collected plastic.
Product 2 is designed to be used in harbors and marinas and requires monitoring once per week to retrieve collected plastic.
If all other costs and benefits are equal, which of these products would you recommend for the grant?
Product 1 because it requires less monitoring, reducing the overall cost
Product 1 because it is presumed to be more effective at removing plastic
Product 2 because it would provide more job opportunities for local people
Product 2 because it would probably last longer in marinas than in the open ocean
Question 6(Multiple Choice Worth 2 points)
(6.02 MC)Which of the following best describes the relationship between human population size and resource use?
Countries with high populations are likely to use more resources.
Countries with high populations are likely to use fewer resources.
Countries with low populations are likely to use more resources.
There is no correlation between population size and resource use.
The best choices for the questions presented are: 'I, II, and III', 'Water clarity', 'Product 1 - because it requires less monitoring, reducing the overall cost', and 'Countries with high populations are likely to use more resources'. These answers are based on the understanding of evaluating innovative processes, measuring environmental quality, cost-effectiveness and global resource use.
Explanation:The questions here are related to environmental issues, their cost-effectiveness and their impact on the quality of the marine environment. In determining the costs and benefits of an innovative process in addressing marine issues, consider the Cost to build, the Effort and time to implement, and Maintenance and recurring costs, hence the answer is 'I, II, and III'. When measuring environmental quality, indication factors could include Water clarity which reflects the health of the ecosystem.
From the two products designed to clean up the marine environment, since all other costs and benefits are equal, Product 1 would be more suitable for the grant as it requires less monitoring, thereby reducing the overall cost. Finally, countries with larger human populations are more likely to use more resources considering that a bigger population would naturally have a greater demand, so the relationship between human population size and resource use would be: 'Countries with high populations are likely to use more resources'.
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how might the introduction of a mouse predator help with the mouse problem in australia
Answer:
Mouse number can increase significantly with in few months in the absence of their predators and these mouse can cause huge damage to vegetation or they can spread deadly infectious disease like plaque so their population must be controlled.
Introduction of mouse predator can help with the mouse problem in australia because mouse is food of the predator and predator will kill and feed on mouse. After introduction of mouse predator the population of mouse will come under control because of becoming prey of predator.
Predators like snakes and cats are very efficient mouse predator which can be useful in controlling mouse problem in australia.
Almost all (99%) of the calcium in the body is used to:
Do bacterial cell membranes have cholesterol
Final answer:
Bacterial cell membranes typically do not contain cholesterol, but have hopanoids instead; however, there are exceptions such as some pathogenic bacteria that utilize host cholesterol.
Explanation:
The question being asked is whether bacterial cell membranes have cholesterol. In general, the membranes of eukaryotic cells, such as those in animals and plants, are enriched with cholesterol along with other types of lipids. However, bacterial membranes do not typically contain cholesterol. Instead, bacteria contain hopanoids, which are sterol-like molecules that can be thought of as bacterial equivalents to cholesterol in eukaryotic cells. Certain special cases exist, such as some species of Mycoplasma, which require cholesterol from their host for growth, and some bacteria that enhance their membranes with sterols when they lack a cell wall, like in the phylum Tenericutes. Additionally, pathogenic bacteria like Mycobacterium tuberculosis and Chlamydia trachomatis utilize host cholesterol for their growth and infection processes.
Plants can reduce global warming, because photosynthesis requires _______.
The answer to this question is that photosynthesis requires carbon dioxide. Photosynthesis is the process where plants converts the light from the sunlight into a chemical energy like oxygen and organic compounds. Plants also use photosynthesis in order for the plants to make food.
Answer: Carbon Dioxide
Phospholipids and triglycerides both _____.
The first step in scientific inquiry is to ask a testable ______ about something you are curious about or something you observe.
Question 4 options:
hypothesis
solution
variable
question
Tom has developed chronic kidney disease. he has lost weight and has a poor intake. the most likely cause is:
A scientist observes one chimpanzee using sticks and leaves to pull ants out of anthills. The scientist concludes that all chimpanzees use tools. Why should you be skeptical of the conclusion?
The Scientists Needs More Supporing Evidence.
The nurse is performing a nutritional assessment on an 80-year-old patient. the nurse knows that physiologic changes can directly affect the nutritional status of the older adult and include:
The nurse should know the physiological changes that an elderly could inhabit due to late age, the nurse would likely assess the elderly has a slow motility in gastrointestinal, has decrease absorption in the gastrointestinal, has taste sensitivity and has decrease in visual acuity where they sight is not as clear as before.
A/an ________ is a malignant tumor of the bone making cells of the red one marrow
How do producers create energy for survival?
Answer: Photosynthesis
Explanation:
Green plants and blue green algae on the terrestrial biome are considered to be producers. They intake carbon dioxide from the environment, water from soil and converts these raw materials in to glucose in the presence of sunlight.
This glucose produces by this process provides energy to them for the various metabolic reactions taking place in the body of producers.
x-rays cannot
X-rays cannot pass through Earth's atmosphere. Which of these is the best location to place a telescope used to observe x-rays from stars?
A-mountain
B-top of building
C-space
D-high-flying aircraft
Answer:
C. Space
Explanation:
Since x-rays cannot pass through Earth's atmosphere, the telescope would have to be placed in space.
A hurricane tore holes in the roof of your house, allowing a good deal of moisture inside. Very quickly, mold began to grow because of it. What would be the most effective and ecologically friendly way of killing the mold and why?
a. Since mold is one of the immobile protists, releasing heterotrophic protists to act as predators would kill it.
b. Since mold is an autotrophic protist, depriving it of light would keep it from photosynthesizing, and it would die.
c. Since protists need moist environments in order to grow well, drying out the area would kill the mold.
d. Since protists need to move their flagella to gather food, spraying red tide toxins on the mold would paralyze and kill it.
The right option is; c. Since protists need moist environments in order to grow well, drying out the area would kill the mold.
Molds are woolly or fury growth of tiny fungi that appears when organic materials lies for a long time exposed to (usually moist and warm) air. Molds can survive and grow almost anywhere that moisture and oxygen are available. The most effective and ecologically friendly way of killing molds is by drying out the affected area to remove excess moisture which can allow their spores to germinate. After drying out the area, the fungus should be removed physically (by discarding contaminated porous materials and cleaning non porous surfaces) in order to avoid mold growth in the future.
A nurse is instructing a client with peptic ulcer disease (pud) about the diet that should be followed during the acute phase. which type of diet should the nurse stress?
With the reason that the client has peptic ulcer disease, is it likely that she needs to be in a non irritating diet that is recommended for her. She needs a diet of not having her gastric acid to increase as person with peptic ulcer disease does not need to have her gastric acid to increase as it is dangerous to their health, they should avoid food that could trigger it to increase and that they don’t have to eat gluten free food and evening snacks are avoided for it triggers the increase. They diet that they needed the most is bland foods for this is recommended for their phase that the client is in.
Outline the evolution of monotreme, marsupial, and placental mammals.
Evolution of Monotreme: About 150 million years ago, the first monotreme have evolved. Early fossils of monotreme have been found in Australia. A genus called steropodon is an example.
Evolution of Marsupial: About 150 million years ago, the first marsupial have evolved. A genus called sinodelphys which was about 6 inches long is an example of earliest found extinct genus.
Evolution of Placental mammals: About 110 million years ago, the earliest placental mammal have evolved. The extinct genus eomaia is an example of this. It was only 4 inches long.
Answer:
Evolution of Monotreme: About 150 million years ago, the first monotreme have evolved. Early fossils of monotreme have been found in Australia. A genus called steropodon is an example.
Evolution of Marsupial: About 150 million years ago, the first marsupial have evolved. A genus called sinodelphys which was about 6 inches long is an example of earliest found extinct genus.
Evolution of Placental mammals: About 110 million years ago, the earliest placental mammal have evolved. The extinct genus eomaia is an example of this. It was only 4 inches long.
Explanation:
A woman gives birth to a small infant with a malformed skull. the infant grows abnormally slow and shows signs of substantial cognitive and intellectual deficits. the child also has facial abnormalities that becomes more striking as it develops. what might you expect to find in the mother’s pregnancy history?
Classify each of the following as homozygous dominant, heterozygous, or homozygous recessive.
A.Gg
B.rr
C.TT
D.Does not include any dominant alleles
E.Does not include any recessive alleles
Consider the activity and specificity of the three enzymes. Pepsin is most active in the human ________ and helps to digest __________. A) mouth; starch B) mouth; protein C) stomach; protein D) small intestine; lipids
C) stomach; protein
Answer:
The correct answer is C) stomach; protein
Pepsin is an endo-peptidase i.e. it breaks down peptide bond and thus helps in breaking down proteins or larger polypeptide chains into smaller chains.
It is secreted as pepsinogen (zymogen) by chief cells in the stomach. HCl (hydrochloric acid) released from parietal cells in the stomach converts pepsinogen into its active form pepsin.
It usually cleaves at the C-terminal side of amino acids such as tyrosine, phenylalanine, and tryptophan.
Which type of microscope requires a nonmetal sample to be prepared for viewing by coating it with a thin layer of conductive material
yes the scanning electron micro
The two major divisions of the nervous system are the central and the ________ nervous systems.
The two major divisions of the nervous system are the central and the central and peripheral nervous systems.
What are the divisions of the nervous system?The nervous system refers to system which controls the response to stimuli both external and internal by an organism.
The nervous system is responsible for carrying messages to the brain and out from the brain to the other parts of the body.
The nervous system is divided into two divisions:
central nervous system andperipheral nervous systemThe central nervous system consists of the spinal cord and the brain.
The peripheral nervous system is made up of nerves and small amount of gray matter known as the ganglia.
Therefore, the two major divisions of the nervous system are the central and the central and peripheral nervous systems.
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A scientist looked at a group of embryos. Upon examination, she observed that species A and B diverged closer to fertilization. She also observed that species C and D diverged closer to birth. Which of the following statements is true?
A. Species A and B are more closely related than species C and D.
B. Species C and D are more closely related than species A and B.
C. Species A and C are related.
D. Species B and D are related.
Answer:
B. Species C and D are more closely related than species A and B.
Explanation:
As you can see in the question above, in relation to embryos, species A and B diverge closer to fertilization. Thus, all embryonic development of these species occurs in different ways and with little or no relationship.
On the other hand, embryos of species C and D diverged closer to birth, which means that all embryonic development was similar and had close factors, which may indicate that these species are more closely related, genetically speaking, than species A and B.
The statement 'species C and D are more closely related than species A and B' is TRUE (Option B).
Divergence and evolutionEvolution refers to descendence with modification between different taxonomic groups.
Divergence is the process by which different individuals/populations separate across time from an evolutionary point of view.Divergence eventually leads to speciation and reproductive isolation.In conclusion, the statement 'species C and D are more closely related than species A and B' is TRUE (Option B).
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Stacie was adopted. Her adoptive mother is a talented painter. Stacie also enjoys painting and drawing. Stacie's interest in art is which kind of trait?
Explanation:
Since, it is given that Stacie was adopted so it is obvious that whatever she will learn or acquire knowledge will be based on her upbringing and surroundings.
For example, Stacie's adoptive mother was a talented painter that is why Stacie also enjoys painting and drawing.
Therefore, it is an acquired trait by Stacie from her adoptive mother.
what is the structure of dna that watch crick and franklin contributed to discover?
The inflammation of a gland is known as __________.
Which of the following is the designation for bedrock? a. O b. A c. R d. C
The Correct answer is: C. R
The main role of ____ in supporting physical activity is to serve as an antioxidant, protecting tissues from oxidation.â