Answer:
a)A dutch father-son team named hans zacharias janssen invented the first so called compound microscope in late 16th century when they discoveted that if they put a lens at the top and bottom of a tube and looked throught lit , objects on the other and became magnified
b) leeuwenhoek the first prokaryotic cells in pond water
A deuterium nucleus consists of one proton and one neutron. The quark composition of a deuterium nucleus is.
The quark composition of a deuterium nucleus is 3 up quarks and 3 down quarks.
What are quarks?Quarks are the most fundamental particles that make up the atomic nucleus. All solid matter that we know is made of three particles, which are the up and down quarks, 'u' and 'd', and the electron.
In this case we have that the composition of the quark in the nucleus will be 3 up quarks and 3 down quarks.
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A deuterium nucleus consists of one proton and one neutron. The quark composition of a deuterium nucleus is
A- 2 up quarks and one down quark
B- 2 up quarks and 4 down quarks
C- 3 up quarks and 3 down quarks
D -4 up quarks and 2 down quarks
The quark composition of a deuterium nucleus is 3 up quarks and 3 down quarks. Thus, option "C" is correct.
What is the composition of quark?The quark composition of a deuterium nucleus is 3 up quarks and 3 down quarks. The overall charge of the deuterium nucleus is +1. Comparing the given overall charge to the chart of the Particles of the Standard Model, the overall charge can be determined from the combinations of the choices.
Thus, option "C" is correct.
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What is a tricarboxylic acid cycle?
Answer:
The citric acid cycle also known as the Krebs cycle or the TCA cycle is a series of chemical reactions to release stored energy through the oxidation of acetyl-CoA derived from carbohydrates, fats, and proteins.
A class is modeling the differences between a unicellular organism and a multicellular organism. Which example is a model of a unicellular organism?
Unicellular organism are one celled but multicellular organisms are made up of many cells.
Explain the difference between unicellular and multicellular organization of organisms?As the name suggests, unicellular organisms are made up of only one cell and this single cell carries out all the essential functions that are needed for the survival of the organism like respiration, photosynthesis etc.
But in multicellular organization, the organisms are made of more than one cells and cells are grouped according to their functions. Each group is specialized for specific functions. Even in higher multicellular organisms the group of cells form specific types of tissues and further they form organs and organ systems which function more efficiently.
Thus, this is the difference.
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What process is shown in the diagram below?
E. tenella and E. mitis Cyclospora sp.
Mall cut site Mnill cut site
mCYCF3E
685
D. Gel electrophoresis
Cyclospora sp.
and Eimeria spp.
Mall cut site
mCYCR4B
978
A. Use of
restriction
enzymes
OB. Karyotyping
C. Polymerase
chain
reaction
(PCR)
The use of restriction enzymes is evidenced by the statement 'cut site mCYCF3E 685' (Option A).
What are restriction enzymes?The restriction enzymes are proteins (enzymes) that cut specific sites in the nucleotide sequence.
In this case, the enzyme cuts the gene mCYCF3E at the position number 685 (nucleotide base).
In conclusion, the use of restriction enzymes is evidenced by the statement 'cut site mCYCF3E 685' (Option A).
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State the relationship between gaseous exchange and respiration
Respiration is the process in which food is oxidized to release energy. Complex organic compounds are converted into simpler ones, e.g glucose into CO2 water and energy released.
Breathe in, breathe out. The oxygen that got in lungs is absorbed into blood and carbon dioxide diffuses out of blood into lungs. That's gaseous exchange.
Gaseous exchange is the diffusion of gases from a region of higher concentration to a region of lower one. It is used for the exchange of oxygen and CO2 between organism and its environment.
While using that oxygen to breakdown food and generate energy particles is respiration.
Function of jugular veins
The function of the internal jugular vein is to collect blood from the skull, brain, superficial parts of the face, and the majority of the neck. The tributaries of the internal jugular include the inferior petrosal sinus, facial, lingual, pharyngeal, superior and middle thyroid, and, occasionally, the occipital vein.
(hoped this helped)
Answer:
bring blood from head and neck
Explanation:
tornado
thunderstorm
hailstorm
blizzard
1. A winter storm that contains strong winds, cold temperatures, and a lot of
snow is a
+
2. A funnel-shaped cloud that touches the ground is called a
3. A storm that includes lightning and thunder is a
4. A type of tropical storm that has strong winds and heavy rain is a
5. A weather condition that contains lumps of falling ice that can be moved
upwards by winds is called a
hurricane
Why does meiosis produce cells with fewer chromosomes?
Answer:
meiosis produce cell with half the chromosome to maintain genetic integrity in the offspring
Unlike an organism with low fitness, an organism with high fitness has the ability to survive and
A. mutate.
B. coevolve.
C. reproduce.
D. interact.
Which of the following pairs a land cover with its most appropriate use? A. Rangeland → industry B. Urban land → Growing crops C. Developed land → Grazing livestock D. Forestland → lumber
The pair that has its land cover with its most appropriate use is Forestland → lumber. That is option D.
What is forestland?Forestland is defined as the piece of land that is covered by tress of different sizes which can be used for timber and lumber purposes.
Therefore, the pair that has its land cover with its most appropriate use is Forestland → lumber.
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At which of these locations is a dietician least likely to work?
school
theater
hospital
nursing home
Answer:
B. Theater
Explanation:
Think about it. Would a dietician really work at an amusement park? That sounds ridiculous! If a dietician wouldn’t work at an amusement park, he or she would not work at a theater.
You’re welcome.
Which is NOT a
subphylum or class
under the Phylum
Arthropoda?
A. Crustaceans
B. Arachnids
C. Centipedes
D. Planarians
Answer:
D
Explanation:
Planarians are of the platyhelminthes.
Please Help Me! My grade is low and this will help!
Explain how a fossil fish can be found in 84-million-year-old rocks in Kansas. Make sure to include details about Earth’s changing surface and how fossils form that you learned from your research. Your answer should include at least five complete sentences.
Answer:
because the kansas was covered in water
Explanation:
Answer:
Kansas was covered in water
Explanation:
Question 22 of 34
How does a fetus receive nutrients before birth?
A. Directly from the mother's digestive system
OB. Through the umbilical cord
OC. The fetus doesn't need any nutrients until birth.
OD. By drinking amniotic fluid
Answer:0B
Explanation:it receives it through the umbilical cord
The process in which mRNA copies of a gene are made and then transported to ribosomes and translated
into polypeptide chains is called _____
a. translation
b. protein synthesis
c. genetic sequencing
d. transcription
The central dogma is the process of the formation of the protein from DNA. The polypeptide chains formed from mRNA are produced through translation. Thus, option a is correct.
What is translation?The translation is the central dogma process that translates the transcripted mRNA copy into amino acids that interlink with peptide bonds to produce polypeptide chains. Translation occurs outside the nucleus.
The duplicated DNA undergoes transcription to produce an mRNA copy that gets transported to the ribosome that translates the mRNA with the help of the tRNA and rRNA to yield chains of amino acids that produce proteins.
Therefore, the mRNA is transported to the ribosome and gets translated to proteins through the process of translation.
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Which of the following best describes the function of the human nervous
system?
OA. The nervous system collects and responds to information about
the internal and external environment.
B. The nervous system protects internal organs and assists with
movement.
OC. The nervous system transports oxygen and nutrients to the body's
tissues.
OD. The nervous system protects the body against infection and helps
regulate body temperature.
Answer:
Which of the following best describes the function of the human nervous system?
Explanation:
The nervous system collects and responds to information about the internal and external environment
A protein which has many sulfhydryl (-sh) groups may exhibit, _______ a type of bonding providing tertiary structure?
A protein which has many sulfhydryl (-sh) groups may exhibit disulfide bridges tertiary structure.
What are disulfide bonds?A disulfide bond is a covalent bond between two atoms of two (cysteine side chains). Large polypeptide chains (more than 200 amino acids) fold and form domains.
Some proteins have disulfide bridges, which are inter-chain interconnections or between parts of a chain, formed by the oxidation of cysteine radicals. Intracellular proteins generally lack disulfide bonds, while extracellular proteins often do.
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White blood cells fight disease.
True
False
Answer:
True
Explanation:
They protect you against illness and disease
Answer:
true! white blood cells fight for your body
Surface runoff is increased by (4 points)
ice
wind
deforestation
terrace building
Surface runoff is increased by deforestation.
What is deforestation?It refers to the removal of forest layers for non-forest-related projects.
Forest layers serve a variety of functions in the ecosystem, including reducing the rate of erosion or runoff by water.
Thus, removing forest layers will lead to an increase in the rate of runoffs in the ecosystem.
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Calculate the area of land in hectares.
Note: 10000m^2 = 1hectares
if the school plan to cultivate plantain at the spacing of 4m * 4m of 80% of the land and pineapple at a spacing of 2m * 2.5m on 20% of the land, Calculate the number of plantain and pineapple planting materials that would be required for the farm.
Please help me.
Answer:
0.315 hectares
Explanation:
To get the answer, we use the area of a trapezium formula, which is ½ (a+b) h, where a and b are the parallel sides and h is the height.
So ½(90m+50m) 45m
½ × 140 × 45
70 × 45 = 3150m²
10000m²= 1hectare
3150m² = x
3150 ÷ 10000 = 0.315 hectares.
How does the nuclear envelope aide in compartmentalization? all but one apply.
a)
the nuclear membrane separates dna from the remainder of the cell.
b)
the nuclear membrane controls the release of mrna from the nucleus.
the nuclear membrane provides a suitable environment protein synthesis
and degradation
d)
the nuclear envelope provides a specific micro-environment for the
process of dna replication
7)
400
The nuclear envelope distinct the process of transcription and translation in the cell. It controls the release of mRNA from the nucleus through the biological process of transcription. Thus, the correct option is B.
What is a Nuclear envelope?A nuclear envelope may be characterized as a positively regulated membrane barrier that separates the nucleus from the cytoplasm in eukaryotic cells.
The process of transcription occurs inside the nucleus and transforms DNA into mRNA, while the process of translation occurs in the cytoplasm which transforms mRNA into specific proteins.
Therefore, it is well described above.
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What system function together maintain life
Answer:
circulatory system
Explanation:
carries oxygen, water, and nutrients to cells throughout your body. Wastes from the cells are eliminated by your respiratory system, your excretory system, and your skin. Your nervous system controls all these activities with electrical impulses.
Use complete sentences to explain how global wind patterns such as the trade winds in the northern hemisphere would be impacted in the absence of the coriolis effect.
Answer:
"Because Earth rotates as the air is moving, the winds in the Northern Hemisphere curve to the right and air in the Southern Hemisphere curves to the left. This phenomenon is called the Coriolis Effect and it's why the trade winds blow toward the west in both the Northern Hemisphere and Southern Hemisphere.."
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How many calories does 1 red apple have?
Answer:
There are 89 calories in 1 medium Red Delicious Apple.✨
Explanation:
How many calories are in a whole red apple?
89 Calories
Fat 0.3 g
Carbs 21.2 g
Fiber 3.5 g
Protein 0.4 g
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I really need the answer now please
dry lab evidence of evolution
Answer:no
Explanation: because it’s no
Answer:
The evidence for evolution
In this article, we'll examine the evidence for evolution on both macro and micro scales.
First, we'll look at several types of evidence (including physical and molecular features, geographical information, and fossils) that provide evidence for, and can allow us to reconstruct, macroevolutionary events.
At the end of the article, we'll finish by seeing how microevolution can be directly observed, as in the emergence of pesticide-resistant insects.
In the human body, neurons never touch each other, there is always empty space between them. What is the space between two neurons called?
A. Synapse
B. Ion channel
C. Interneuron
D. Ganglion
Answer:
A. Synapse
Explanation:
The gap between two neurons is called synaptic gap, or synapse.The synapse is the space between the axon of one neuron and the dendrites of the next neuron in a nerve pathway.
Answer:
Synapse
Explanation:
Also known and a synaptic gap
The two systems that control body functions are the:.
Answer:
Your nervous system and endocrine system control body functions.
CHROMOSOMES AND INHERITANCE VOCABULARY REVIEW Distinguish between the terms in each of the following pairs of terms. X-linked gene, Y-linked gene 2. germ-cell mutation, somatic mutation 3. translocation, nondisjunction 4. nucleotide deletion, nucleotide insertion. 5. substitution, frame shift mutation MULTIPLE CHOICE Write the correct letter in the blank. 1. Genes that belong to the same linkage group pdf
How can something that happens in a terrestrial system affect an aquatic system? Give an example.
Answer:
Strong hydrologic connections among terrestrial and inland aquatic realms exist in both river floodplains and dryland ecosystems. In the evolution of river floodplains terrestrial vegetation diversifies inland aquatic habitats, providing a range of colonization options for different organisms
Explanation: