Sue has Parkinson's disease. She takes medication that increases the level of
Answer:
Sue has Parkinson's disease. She takes medication that increases the level of dopamine.
Explanation:
Using the food web below determine how many omnivores are present.
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Muscle contraction is the activation of tension-generating sites within muscle fibers. In physiology, muscle contraction does not necessarily
A focus of environmental science not studied in ecology is the
Answer:
The influence of human activities on the environment
Explanation:
Anthropogenic activities may have negative effects on the environment by declining its biodiversity and by reducing natural resources. Human activities affect the environment through the use of fossil fuels (greenhouse gases), by contributing to the pollution of extensive areas, by overpopulation, eutrophication, deforestation, etc. The most significant effects of anthropogenic activities include the loss of biodiversity, climate change (global warming), habitat fragmentation, environmental degradation (e.g., ocean acidification), the introduction of invasive species, species extinction, etc.
Answer:
Ecology is the study of all organisms in an environment
Environmental science is the study of the interrelatedness of everything in that environment
Explanation:
Which type of feed is typically fed to baby chicks?
crumbles
mash
pellets
scratch
Explain (in one or two lines) the function of the followings:
(a) Promoter
(b) tRNA
(c) Exons
Answer:
In genetics, a promoter is a sequence of DNA to which proteins bind that initiate transcription of a single RNA from the DNA downstream of it. This RNA may encode a protein, or can have a function in and of itself, such as tRNA, mRNA, or rRNA. Transfer ribonucleic acid (tRNA) is a type of RNA molecule that helps decode a messenger RNA (mRNA) sequence into a protein. tRNAs function at specific sites in the ribosome during translation, which is a process that synthesizes a protein from an mRNA molecule. Proteins are built from smaller units called. An exon is the portion of a gene that codes for amino acids. In the cells of plants and animals, most gene sequences are broken up by one or more DNA sequences called introns.
You catch, tag, and release 35 fish back into a pond. Then, you catch 70 more fish, 12 of which have tags on them. What is the best estimate of the number of fish in the pond?
a.
100
b.
150
c.
142
d.
204
Answer:
D. 204
Explanation:
proportion : 12/70 = 35/x
70(35)=12x
2450=12x
204.166667=x and round it to make it 204.
The best estimate of the number of fish in the pond is 204. Thus, option D is correct.
Calculation:
proportion : 12/70 = 35/x
70(35)=12x
2450=12x
204.166667=x and round it to make it 204.
What is average speed?Average speed has been defined as the total distance travelled in total time taken it means that we can calculate the average speed obtained by an object .
Mathematically,
Average Speed = Total distance travelled/Total time taken
It's S.I unit is meter/second
Average speed is a scalar quantity it means that it has only magnitude not direction.
Ecosystem has been the branch of science that deals with the study of relationship between living organisms and natural phenomena. Ecosystem has the system in which both living as well as nonliving organisms are present in a particular location.
Green plants contain chlorophyll and they prepare there own food in the presence of sunlight and the process is known as photosynthesis. In the process of photosynthesis light energy converted into chemical energy.
Therefore, The best estimate of the number of fish in the pond is 204. Thus, option D is correct.
Calculation:
proportion : 12/70 = 35/x
70(35)=12x
2450=12x
204.166667=x and round it to make it 204.
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What causes surface tension in water?
Answer:
the molecules on the surface to contract and to resist being stretched or broken.
Explanation:
A 7.2 × 10–5 C charge has an electric potential energy of 1.08 × 10–2 J. The electric potential, to the nearest whole number, is V.
Answer:
150.
Explanation:
On edge
The electric potential, to the nearest whole number is 150 V.
What is the electric potential energy?The electric potential energy denoted by U is proportional to the charge and inversely proportional to the distance between the point where its is brought from infinity to the charge.
U = kQ₁Q₂/r
For identical charge,
U =kQ²/r................(1)
and the electric potential is given by
V = kQ /r................(2)
Dividing both the equations, we get
U/V = Q
Substitute charge Q = 7.2 × 10⁻⁵ C, Electric potential energy U = 1.08 × 10⁻² J, then the electric potential will be
V = 1.08 × 10⁻² / 7.2 × 10⁻⁵
V = 150 Volts
Thus, the electric potential is 150 Volts.
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Camille was excited when the new instrument showed up at the lab. She
opened it up and started using it right away. What was her error?
A.) He used an inappropriate instrument.
B.) He used an uncalibrated instrument.
C.) He misread a measurement.
D.) He used the incorrect units.
Answer:
I would say B- it was uncalibrated
Explanation:
he did not take the time to make sure it was calibrated before use
A mineral crystallizes from magma deep inside Earth.
Which characteristics can be determined given only the information above?
O luster
streak
O crystal size
O crystal structure
Answer:
It's crystal size.
Explanation:
The magma in the earth isn't cooling yet, the slower the cooling, the larger the crystals,
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From the given information the crystal size can be determined. The crystal size can be studies from the crystallization and cooling rate of magma.
What are minerals?Minerals are inorganic solids that exist in nature and have a distinct chemical composition and crystalline structure. Even though thousands of minerals in the earth have been found, only ten minerals such as quartz, orthoclase, pyroxene, calcite, biotite, garnet, clay etc. make up the majority of the crust's volume.
Mineral rock have to property of lustering such as polished metals and they reflect the light in color. The color of the powder of the crystalline mineral is called streak.
As the magma cools, the size of crystal becomes large. It is proved that from the cooling rate of magma, the crystallization and crystal size can be determined.
Hence, crystal size can be determined from the given information and option C is correct.
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Explain why circulatory problems often occur with people who are bedridden or with inactive people who seldom use their muscles.
Balance this equation
Answer:
6CO2 + 6H2O → C6H12O6 + 6O2
Explanation:
According to erikson theory which stage of social development is related to adulthood?
CHOICES: A. Trust vs. Mistrust
B. Intimacy vs. Isolation
C. Initiative vs. Guilt
D. Autonomy vs. Shame
Answer:b
Explanation:
2. How does the development of a nervous system and sense organs relate to increasing complexity of multicellular animals?
The development of nervous system and sense organs in multicellular organisms has led to evolution of species in a more complex manner.
Complexity of multicellular organisms• The development of nervous system and sense organs has permitted for a greater level of perception and better equipped organisms.
• It has permitted the organisms to collect resources, react to their surroundings, and take advantage of their surroundings.
• This has resulted in the organisms to survive longer and accommodate into bigger types of body.
• Such amendments has thus permitted organisms to become more complex and move up the food chain.
Thus, the development of nervous system and sense organs is associated with increasing complexity of multicellular animals.
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why do all organisms share the same genetic code?
Answer:
DNA is considered a universal genetic code because every known living organism has genes made of DNA. ... All organisms also use DNA to transcribe RNA, and then they translate that RNA into proteins. Every living organism uses that same system. Basically, every three pieces of DNA becomes one amino acid.
Explanation:
because it is
Which of the following is true of food webs?
a. Food webs don't actually exist in nature.
b. A food web shows the flow of decomposers
from producers to consumers and, finally, to
producers.
c. In food webs, detritivores break down organic
waste to return nutrients to the ecosystem.
d. When diagramming food chains and food
webs, the arrows should be drawn from the
lower trophic levels to the higher levels to
show the flow of energy.
e. As energy is moved up the food web, most of it
is conserved by the species in the next trophic
levels.
Answer:E
Explanation:
is the current way of our living sustainable
Are your body cells (e.g., red blood cells, muscle cells, or skin cells) eukaryotic or prokaryotic cells? Please support your answer.
Answer:
eukaryotic, because our body cells have nucleus and membrane-bound organelles
There are 12 apples 14 oranges and 16 bananas in a fruit basket.what is the ratio apples to bananas
Answer:
12:16
Explanation:
Which ecosystem would be most sustainable if all the grasses died from severe drought
Answer:
Deserts
Explanation: Deserts need little to no water
What happens to a gas when heat is removed?
A. The particles have more kinetic energy.
B. The particles move faster and become less compact.
C. The particles move slower until the matter changes into a. liquid.
D. The particles reduce their size by at least half.
Can you help me please i will give you a branlist and it’s science
Answer:
B.
Explanation:
I think it's because protons are the ones that circle, neutrons stay in the middle becuz they're neutral, and electron are negatively charged?
How many elements in nitrogen monoxide?
Answer:
Two elements
Explanation:
Nitrogen and Oxygen only, (NO)
Select all answers that reflect contributions molecular approaches have made to modern taxonomy. Check All That Apply revealed that ssu rRNA is highly conserved so can be used for classificationrevealed that ssu rRNA is highly conserved so can be used for classification have led to the development of a new taxonomic system divided into domainshave led to the development of a new taxonomic system divided into domains have not changed the overall tree of lifehave not changed the overall tree of life revealed that archaea are more closely related to prokaryotic than eukaryotic cells
Answer:
- revealed that rRNA is highly conserved so can be used for classification
- have led to the development of a new taxonomic system divided into domains
Explanation:
The ribosomal RNA (rRNA) genes are widely used in evolutionary, phylogenetic, and phylogeographic studies as molecular markers because they represent nuclear genes that are highly conserved between species. However, it is important to highlight that rRNA genes form arrays at specific chromosomal sites, thereby they often exhibit pseudogenes that may interfere with their use as molecular markers (i.e., they produce multiple bands in the electrophoresis gel). In 1977, Carl Woese showed that Archaea is an evolutionary lineage separated from Bacteria by using molecular evidence based on an rRNA molecular marker (16S rRNA). Thus, Woese indicated that Eukarya, Bacteria and Archaea represent three different domains that arose separately from an evolutionary ancestor named 'progenote'.
consists of 3 types that work together to make proteins.
a. DNA
Ob.RNA
Ос. АТР
d. None are correct
Answer:
d none are correct
Explanation:
Differentiate external and internal environment factors in influencing Gene expression
Answer Internal and external environmental factors, like gender and temperature, influence gene expression. ... Similarly, drugs, chemicals, temperature, and light are among the external environmental factors that can determine which genes are turned on and off, thereby influencing the way an organism develops and functions.
Explanation:
Any change in a LLEL frequencies in the gene pool is called
Answer: microevolution.
Explanation:
Allele frequencies in a population may change due to gene flow, genetic drift, natural selection and mutation
When a liquid changes to a gas the process is called?
Answer:
Condensation
Explanation:
the word is called condensation
Does fertilizer make a plant grow bigger? Amount of fernalizer measured in grams, quantitiesnof water measured in milliliters
Answer:
Yes, fertilizer can make plants grow bigger due to the nutrients it can provide to the soil and plants.