Answer: c
Explanation: correct answer
Streak plates are used to test minerals because they show you the color of the mineral in powdered form. So, the correct option is C.
What are Streak plates?Small pieces of unglazed glass or porcelain are known as streak plates, and they are used in mineralogy to assess the streak color of a mineral. They are usually a few inches in length and about an inch in width.
The streak of a mineral is its color after it has been ground into a fine powder and rubbed across a streak plate. Because some minerals have recognizable colors that differ from their actual color, it can be helpful to identify them.For example, hematite is a dark brown mineral with bright red streaks. You can differentiate hematite from other dark brown minerals by looking at the color of the streaks.
Therefore, the correct option is C.
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How have hominid skulls changed over time? What are some of the reasons for those
changes?
Answer:
The change from the oblong skull and protruding face of ancient humans (right) to the modern rounder skull and retracted face is associated with a sharper bend in the floor of the brain case (lower left), thought to be caused by increased brain size.
Explanation:
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The change from the oblong skull and protruding face of ancient humans (right) to the modern rounder skull and retracted face is associated with a sharper bend in the floor of the brain case (lower left), thought to be caused by increased brain size.
7. What do sea spiders use for gas exchange?
Answer:
sea spiders are marine arthropods that lack gills and rely on cutaneous respiration but still grow to large sizes. Their cuticle contains pores, which may play a role in gas exchange
Which of the following animals are examples of vertebrates?
a. elephants, snakes, sea sponge, earthworms b. humans, hawks, sun fish, bullfrogs
c. humans, ants, spiders, bullfrogs
d. butterflies, clams, earthworms, jellyfish
Answer:
B: humans, hawks, sunfish, bullfrogs
Explanation:
Post-translational modifications of proteins may include which of the following processes?
Post-translational modifications of proteins makes them functional and include:
methylationaddition of disulphide bridges folding phosphorylation What is post-translational modification of proteins?Post-translational modifications of proteins refers to modifications that are made on new synthesized proteins after synthesis at the ribosomes.
Post-translational modifications of proteins are important as they help to convert the proteins into their active forms.
Some post-translational modifications of proteins include:
methylationaddition of disulphide bridges folding phosphorylationTherefore, post-translational modifications of proteins are required to make proteins functional.
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Which of these organisms are herbivores?
producer
primary consumer
decomposer
scavenger
Human Use of Land
Journal Activity Active
Prompt
How has human land use impacted the environment?
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Decreased water quality, increased pollution, depletion of natural resources and global climate change are the results of human land use.
How human impacted the environment?Humans impact the environment in many ways such as overpopulation, pollution, burning fossil fuels, and deforestation. Human activities triggered climate change, soil erosion, poor air quality, and undrinkable water.
So we can conclude that reduction of water quality, increased pollution, depletion of natural resources and global climate change are the results of human land use.
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why is it beneficial for scientists to understand how other organisms are able to edit which proteins are created
Answer:
Genome editing technologies enable scientists to make changes to DNA, leading to changes in physical traits, like eye color, and disease risk
Explanation:
ABO blood group determination is a example of
ABO blood group determination is a example of multiple Alleles.
What is Multiple Alleles?Multiple alleles refer to a type of non-Mendelian inheritance pattern that comprises of more than the normal two typical alleles that is dorminant and recessive alleles that usually code for a certain characteristic in a species.
Examples of multiple Alleles is the genes of ABO blood group determination.
Therefore, ABO blood group determination is a example of multiple Alleles.
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Which of the following is an example of bioremediation?
a .using microorganisms to clean up an oil spill
b. using bacteria to make yogurt.
c. creating plants that are resistant to bacteria.
d. adding nitrogen-fixing bacteria to the soil before planting crops
Answer:
A: Using microorganisms to clean up an oil spill.
Explanation:
Bioremediation is a subcategory under biotechnology which alters environmental conditions with the usage of living organisms. It's a process that focuses on breaking down contaminants - making it an effective method to clean up oil spills due to its efficiency and affordability compared to other options.
the peripheral nervous system is involved in
A. voluntary but not involuntary, actions
B. both voluntary and involuntary actions
C. involuntary but not voluntary actions
Answer:
B. Both voluntary and involuntary actions
Answer:
b both voluntary and involuntary actions
Explanation:
peripheral nervous system is the whole system which is composed of voluntary actions ( by purpose actions eg. running) and involuntary actions ( natural actions eg. heartbeat)
Which is a no renewable source of energy?
Answer:
C) natural gas
Explanation:
Wind, water, and sunlight are abundant and easily renewable for energy. Natural gas is the only option that becomes more scarce as it is extracted from the earth.
The graph shows the change in seabird mortality rates in New Zealand waters due to illegal, unreported, and unregulated fishing (IUU) and the implementation of bycatch remediation measures in 2004. What conclusion can be made about the impact of the remediation measures that were used?
Illegal and unregulated fishing practices continue to cause increases in bird bycatch numbers, in spite of the new measures.
Legal fishing practices have caused the new remediation measures to become more effective.
The measures virtually eliminated all of the bird bycatch.
The measures used showed very little impact on the overall seabirds caught in fishing lines.
According to the graph, the measurements practically eliminated all incidental captures, as shown in the third answer option.
What does the graph show?Illegal capture practices show a high performance between 1997 and 2003.Illegal capture practices show a low performance from 2004 and this performance tends to fall in the next years until it presents very low values.Legal capture practices maintain a balanced performance.The decrease in the performance of illegal practices from 2004 onwards, shows how the remediation measures were efficient in reducing the activity of these practices and providing a better environmental well-being.
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If a person with Klinefelter’s syndrome wanted to look more like an average male, what medical treatment could help accomplish this?
Engineering and work practice controls have evolved primarily
Engineering and work practice controls have evolved primarily: To teach the hierarchy and application of preventive strategies To enforce compliance by housekeeping and maintenance departments To comply with federal law For control of exposure to bloodborne and airborne pathogens. [tex][/tex]
Engineering and work practice controls have evolved primarily D. For control of exposure to bloodborne and airborne pathogens.
What are engineering and work practice controls?Engineering and work practice controls are the workplace controls that:
Eliminate or isolate biohazards.Promote safer workplace behaviors.Enforce handwashing procedures.Restrict eating and drinking in work areas.Decontaminate equipment before servicing.Reduce the likelihood of exposure to workplace incidents.A pathogen is a disease-causing organism that may invade the body cells, including viruses, bacteria, fungi, protozoa, and worms.
Answer Options:A. To teach the hierarchy and application of preventive strategies.
B. To enforce compliance by housekeeping and maintenance departments.
C. To comply with federal law.
D. For control of exposure to bloodborne and airborne pathogens.
Thus, Engineering and work practice controls have evolved primarily D. For control of exposure to bloodborne and airborne pathogens.
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describe how energy is transferred through a food chain
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Well energy is transferred between organisms in food webs from producers to consumers. The energy is used by organisms to carry out complex tasks. The vast majority of energy that exists in food webs originates from the sun and is converted (transformed) into chemical energy by the process of photosynthesis in plants.on:
Answer:
Energy is passed between organisms through the food chain. Food chains start with producers. They are eaten by primary consumers which are in turn eaten by secondary consumers. They are then eaten by tertiary consumers and in a long food day these can be eaten by quaternary consumers.
What material is the objective lens made of in UV fluorescence microscopy
Answer:
quartz
Explanation:
The diagram below represents one way an enzyme can be inhibited (stopped).
Which statement explains the effect of an inhibitor on an enzyme?
The substrate will not be able to attach to the enzyme's active site.
O The enzyme will likely be attacked by immune cells.
Answer:
The answer is The substrate will not be able to attach to the enzyme's active site.
Because the function of inhibitors is to block the enzyme's activity
Explanation:
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The substrate will not be able to attach to the enzyme's active site. So the correct option is A.
What is an enzyme inhibitor?The inhibition is carried out by inhibitors that do not advance the product's development. The inhibitors may affect the enzyme as well as the substrate. Enzyme inhibition is the term used to describe the cessation of enzyme activity.
These enzyme inhibitors can bind to active regions and prevent further action by stopping it. Both reversible and irreversible forms of binding are possible. The ability of an inhibitor to block an enzyme may be irreversible or reversible depending on its unique function. Enzyme inhibitors can block the binding site, which reduces the enzyme's catalytic activity by preventing the substrate from binding to the active site.
Reversible inhibitors bind to enzymes by non-covalent interactions such as ionic bonds, hydrogen bonds, and hydrophobic contacts. Reversible inhibitors do not conduct chemical reactions when they are linked to an enzyme and are quickly removed by dilution or dialysis.
However, irreversible inhibitors usually covalently change an enzyme, making it impossible to reverse inhibition.
Therefore, the correct option is A.
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Define nondisjunction. Is this a beneficial process? Explain.
Answer:
Nondisjunction occurs when chromosomes fail to segregate during meiosis; when this happens, gametes with an abnormal number of chromosomes are produced. The clinical significance is high: nondisjunction is the leading cause of pregnancy loss and birth defects
Explanation:
What that determines if a cell is eukaryotic. *
Which animal phylum was the first to develop a dorsal nerve cord a backbone?
Answer:
Chordates?
Explanation:
Why is over farming a threat to the health of humans?
A.
It decreases the use of fertilizer.
B.
It increases the production of food.
C.
It adds too many new nutrients to the soil.
D.
It removes too many nutrients from the soil.
Answer:
it removes too many nutrients from the soil.
Explanation:
Explanation:
it can increas the health risk
Which type of fish are sharks?
A. deep sea fish
B. cartilaginous fish
C. lampreys
D. bony fish
Please help!!
Answer:
B. Cartilaginous fish
Explanation:
Sharks have a cartilaginous skeleton. Cartilage is less dense than bone which allows sharks to move quickly through the water without using too much energy.
What changes occur in the atmosphere as you go higher?.
Answer:
Air pressure drops, and temperatures get colder.
Explanation:
Hope this helps!!
PLEASE HELP 10 POINTS!
Why is humus an effective fertilizer? (Select all that apply.)
It is abundant in inorganic nutrients.
It is dense and does not contain organic matter.
It is rich in organic matter.
It doesn’t need microorganisms to decompose matter
Answer:
It is rich in organic matter.Explanation:
Humus is organic material formed when an animal or plant decays.Humus is formed by the decomposing action of soil microorganisms.Climates are classified on_________
Which of these is NOT one of the 4 chemicals used in DNA?
A. Adrenaline
B. Cytosine
C. Thymine
D. Adenine
Answer:
A. Adrenaline
Explanation:
adrenaline is a hormone
Answer:
A. Adrenaline
Explanation:
A is NOT correct because the actual 4 chemicals in DNA are Adenine,Cytosine, Thymine and Guanine.
Adrenaline is NOT part of the 4 chemicals of the DNA, which makes A correct answer.
what is The basic unit of biological classification
Explanation:
The basic unit of biological classification is Species
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7) If there is a third-quarter moon on July 2, what is the approximate date of the next full moon?
A) July 9th
B) July 16th
C) July 23rd
D) July 30th
Answer:
A -- July 9th
Explanation:
I say July 9th because A full Moon happens roughly every 29.5 days. This is the length of time it takes for the Moon to go through one whole lunar phase cycle.
Hope this helps! Please let me know if you need more help or think my answer is incorrect. Brainliest would be MUCH appreciated. Have a wonderful day!
Which object measures atmospheric pressure?
a ballast tank
a barometer
a thermometer
Answer:
A barometer
Explanation:
It is commonly used to measure atmospheric pressure
What happens to sunlight photons?
Answer:
All of the infrared photons are absorbed and re-radiated by the glass pane.
Sunlight photons interact with the Earth's atmosphere, scattering, absorbing, and transmitting, influencing weather, photosynthesis, and regulating the planet's temperature.
When sunlight photons reach the Earth's atmosphere, several interactions occur. First, a fraction of photons is absorbed by atmospheric gases, which excite their molecules. Some photons are scattered in various directions due to Rayleigh or Mie scattering, making the sky appear blue and contributing to diffuse light. Next, photons that pass through the atmosphere may interact with clouds, dust, and aerosols, leading to further scattering and absorption.
Eventually, the remaining photons reach the Earth's surface and may be absorbed, reflected, or transmitted. The absorbed photons can warm the Earth, driving weather patterns and supporting photosynthesis in plants. Reflecting and transmitting photons play a crucial role in regulating Earth's temperature and energy balance.
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The complete question is:
What happens to sunlight photons when they reach the Earth's atmosphere?