Answer:
1. B
2. E
3. P
4. E
5. B
6. B
7. B
8. E
9. E
10. E
Explanation:
1. Both prokaryotes and eukaryotes have a cell membrane. Hence, it is B
2. Only eukaryotes have a nucleus. Hence, it is E
3. Bacteria are an example of prokaryotes because they lack a membrane-bound nucleus. Hence, P
4. Animals are an example of eukaryotes because they possess a membrane-bound nucleus. Hence, E
5. Both prokaryotic and eukaryotic cells contain ribosomes. Hence, B.
6. Both prokaryotes and eukaryotes contain cytoplasm. Hence, B.
7. Both prokaryotes and eukaryotes contain genetic material, such as DNA. Hence, B
8. Only eukaryotes contain membrane-bound organelles e.g mitochondrion, endoplasmic reticulum. Hence, E.
9. Plants are an example of eukaryotes because they possess a membrane-bound nucleus. Hence, E.
10. My body cells as a human being are made of eukaryotic cells. Hence, E.
Type the correct answer in the box. Spell all words correctly.
What is a close relationship between two organisms that live together called?
The close relationship between two organisms that live together is called
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Answer:
symbiosis.
Explanation:
The term that you are referring to is symbiosis. (a symbiotic relationship)
Symbiosis is a proximate and often long-term interaction between two or more different biological species.
How is economic growth usually measured?
A. Gross domestic product (GDP)
B. The average citizen's quality of life
C. Average income
D. Profits per capita
Why is cellulose so difficult for most animals to digest?
Answer:
They dont have the needed enzymes to break cellulose sown so if they eat it then they will get sick.
Explanation:
Which statement describes the motion of the sun?
A. The sun rotated on an axis.
B. The sun does not rotate.
C. The sun moves around the earth.
D. The sun orbits the solar system.
I forgot the answer and need help.
Explanation:
d because i am pretty sure i have seen that question alot
Answer:
The answer is B
Explanation:
because we move around the sun this sun doesn't move
Which distribution pattern in species can be considered the most easily measurable
Answer:
local endemics
Explanation:
The most common distribution pattern in species can be considered by their geographical distribution, as different species get distributed as per their climate and the different regions that suit them the most.
What is the significance of the geographical distribution?It is significant because they differ in different parts of the world and provide suitable climatic and other environmental conditions for various animals, plants, and microorganisms to live and evolve. Its significance can be seen in the difference between the life forms in the temperate area and those in the Antarctic area.
Hence, the most common distribution pattern in species can be considered by their geographical distribution, as different species get distributed as per their climate and the different regions that suit them the most.
Learn more about the geographical distribution here.
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Which of the following is true regarding the machinery of translation?
a. A single mRNA can be translated simultaneously by several ribosomes.
b. tRNAs released from the ribosome are degraded B) termination and eukaryotes utilizes three different release factors.
c. Polycistronic MRNA usually has a single ribosome binding site.
e. once a single mRNA strand is translated once it is degraded
Answer:
The correct answer is: a. A single mRNA can be translated simultaneously by several ribosomes.
Explanation:
Ribosomes are structures composed of ribosomal RNA (rRNA) that direct the process of translation, with the help of special proteins and key molecules called transfer RNA (tRNA) that are 'able to read' the codons in the mRNA. To help with this 'reading', ribosomes move through the mRNA strand as the translation moves forward, placing the anticodons presented by the tRNA molecules with their specific match - each mRNA codon - forming a strand of amino acids.
To ease the process in the cases where the molecule to be translated is a polypeptide, groups of ribosomes form a polysome and they all translate one single mRNA strand at the same time. Each of these ribosomes starts translating from the first codon and stop when the stop codon appears.
The true statement regarding the machinery of translation is ; ( A ) A single mRNA can be translated simultaneously by several ribosomes
Translation is the process of producing protein with the use of RNA ( i.e. the process of protein synthesis from an mRNA template ) during translation the code found in the template is converted into an amino acid sequence.
Ribosomes are composed of rRNA which directs the process of translation with the proteins and key molecules such as tRNA.
Hence we can conclude that the true statement regarding the machinery of translation is A single mRNA can be translated simultaneously by several ribosomes.
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How does the Edge Effect impact biodiversity?
Answer:
In ecology, edge effects are changes in population or community structures that occur at the boundary of two or more habits. As the edge effects increase, the boundary habit allows for greater biodiversity.
Explanation:
Francine is developing a model of the carbon cycle, which involves the movement of carbon among various Earth systems. She begins by drawing the diagram shown below.Her friend Byron evaluates the model, and suggests that she thicken the arrow leading from fossil fuels to the atmosphere. His reasoning is that fossil fuels are being burned at a much faster rate than natural processes are restoring them. A. The model shows that their combined effects determine the amount of solid carbon compounds in the geosphere.
B. The model shows that their combined effects determine the level of carbon dioxide that dissolves in the hydrosphere.
C. The model shows that they have identical effects on carbon dioxide levels in the atmosphere.
D. The model shows that they have opposite effects on carbon dioxide levels in the atmosphere.
The missing part of this incomplete question is :
How does Francine's model show the effect of photosynthesis and cellular respiration on Earth systems?
Answer:
The correct answer is - option D. The model shows that they have opposite effects on carbon dioxide levels in the atmosphere.
Explanation:
Cellular respiration and photosynthesis are two major processes are involved in the carbon cycle and both have the opposite effect on carbon dioxide levels in the atmosphere.
Photosynthesis uses carbon dioxide from the atmosphere to produce glucose with the reaction with the water whereas cellular respiration produces energy and carbon dioxide that is restored in the atmosphere.
Thus, both the processes have the opposite effect on the carbon dioxide levels in the atmosphere as photosynthesis decreases and cellular respiration increases in the atmosphere.
1. Explain how a bacteriostatic antibiotic is useful even if it does not result in the death of the pathogen.
2. Give an example of when you would want to use a broad-spectrum antibiotic and when you would want to use a narrow-spectrum antibiotic. Give a disadvantage to using a broad-spectrum antibiotic.
3. Explain how organisms can develop resistance to chemical disinfectants.
4. Describe how avoiding the use of antibiotics for viral infections can prevent the spread of antibioticresistance.
Answer:
1- the bacteriostatic effect refers to the fact that they stop the metabolism of pathogenic bacteria, which means that they do not reproduce, do not colonize and do not generate the disease.
Bacteria in order to trigger a pathogenic response need to comply with their metabolism and this does not happen in the bacteriostatic effect.
2- Broad spectrum antibiotics where the patient's life is at risk, difficulty swallowing or breathing, and in infections that involve many planes or we are facing an extremely complex buofilm.
Low-spectrum antibiotic, in mild, focal infectious diseases that do not compromise the systemic factor and are suspected of simple or little complex pathogens.
3-Through mechanisms and virulence factors that are transmitted between them. One mechanism is sporulation, the change of essential metabolite, among others.
4- Prevents the spread and resistance because it reduces the bacterial load of pathogenic bacteria that in the future could form bacteruphages.
Explanation:
Broad spectrum antibiotics cover many bacteria, that is, they kill many bacteria of different families and even characteristics, while low spectrum antibiotics are the opposite.
JL = 100; JY = 4x - 10; Find the value of X*
K
J
JL = 100
4x - 10
M
L
One primer attaches to the __ end of the gene region on the 5' to 3' strand, another to the ___ end of the gene region of the 3' to 5' strand. This was maybe not explicit in the video. 3’ and 5’ refer to the orientation of the DNA strand. The 3’ end is the end that has the OH group used for adding new nucleotides. The 5’ end is the end where a phosphate sticks out from the ribose. The two strands that make up the DNA molecule run anti parallel to each other. Synthesis is always in the 5’ to 3’ direction (because that is where new nucleotides attach), and the template strand is read 3’ to 5’ (because it runs antiparallel).
Answer:
Explanation:
This question is incomplete however during DNA amplification using polymerase chain reaction, the two primers attach to each DNA strand at the 3' end.
Two primers are used during this process; one primer each for the two complementary strands of DNA (that run antiparallel to each other). The 5' end of each primer is attached to the 3' end of each DNA strand regardless of the direction the strand is running (5' to 3' or 3' to 5'). This process of attaching the primers to the DNA strand is known as annealing.
Please help me in biology asap, 20 points for answering thanksss
Answer:
a) blood from the heart flows through your capillaries and collects oxygen from the alveoli. while that happens, co² passes out of the capillaries and into the alveoli. when you breathe out, you get rid of co² and oxygen is returned to the heart and pumped out to the body.
b) digested nutrients are absorbed into the bloodstream through capillaries in the villi that line the small intestine.
what is genus and species for humans?
Answer:
Homosapiens
Explanation:
Genus is Homo and species is sapiens
In meiosis when the cells divide again, what happens to the number of chromosomes?
19. This picture represents what type of cell transport?
OUTSIDE
CYTOPLASM
A. Endocytosis
B. Exocytosis
C. Osmosis
D. Passive Transport
Answer:
d
Explanation:
10. In the process of photosynthesis, chlorophyll serves as ___.
a. An end product
b. A raw material
c. An energy converter
d. A hydrogen acceptor
Answer:
c. an energy converter
Explanation:
Select all of the following that describe RNA?
Answer:
there is no choices
Explanation:
what
DNA sequences can act as "tape measures of evolution". Scientists analyzing the human genome sequence were surprised to find that some of the regions of the human genome that are most highly conserved (similar to comparable regions in other species) don't code for proteins. What is a possible explanation for this observation? EVOLUTION CONNECTION sequences can act as "tape measures of evolution". Scientists analyzing the human genome sequence were surprised to find that some of the regions of the human genome that are most highly conserved (similar to comparable regions in other species) don't code for proteins. What is a possible explanation for this observation?
Answer:
Non-coding DNA regions play important roles in regulating transcriptional activity by encoding different types of non-coding RNAs (ncRNAs), acting as scaffold attachment regions, acting as enhancer specific regions, etc.
Explanation:
Historically, it had been believed that non-coding DNA sequences were 'junk DNA' since they don't encode for proteins (beyond the sequences that are transcribed into functional non-coding RNAs, i.e., transfer RNA and ribosomal RNA). However, in the last years, it has been shown that non-coding DNA sequences play critical roles in regulating gene expression and genome function. For example, evolutionary conserved non-coding RNAs (ncRNAs) with regulatory roles on gene expression such as, for example, long non-coding RNAs (lncRNAs) and microRNAs (miRNAs) have been mapped in non-coding DNA sequences, thereby evidencing the functional significance of these regions. In consequence, the conservative nature of certain non-coding DNA sequences evidence that mutations in such regions may have significant deleterious effects, and thereby they could have a negative impact on the fitness of the individual.
In a rainforest food chain, caterpillars and butterflies eat orchid plants. Toucans eat the caterpillars and butterflies. Leopards eat the toucans.
Which statement describes the energy in this food chain?
The leopards gain energy directly from the butterflies.
The orchids have the least amount of available energy.
The caterpillars gain energy directly from the orchids.
The toucans have more available energy than the butterflies.
Genetics is the most important factor that affects your physical fitness.
Answer:
The caterpillars gain energy directly from the orchids.
Explanation:
The correct answer would be that the caterpillars gain energy directly from the orchids.
Since the caterpillars feed on the orchid plant, they gain their energy directly from it. The orchid plant represents the primary producer in the food chain while both the caterpillars and the butterflies are primary consumers.
The leopard does not gain its energy directly from the butterflies because the animal does not feed directly on the butterflies. The orchid has the highest amount of energy available because it gets its energy from the sun through photosynthesis. The toucans cannot have more energy available than the butterflies because the more you move up the food chain, the lesser the energy available.
Which of these molecules is NOT a Protein molecule?
Keratin
Hemoglobin
Lactase
Estrogen
rch
е
Someone please help ! Will give brainliest !
tbh I'm pretty sure this is right
The decimal reduction time (DRT) to kill 90% of cell present for autoclaving a culture is 1.5 minutes. How long would it take to kill all the cells if 106 cells were present? What would happen if you stopped the heating process at 9 minutes?
Answer:
10.5minutes
Explanation:
DRT = 90%
Cells present = 10^6
Autoclaving = 1.5 minutes
Solution:
10^6(1.5)10^5(1.5)10^4(1.5)10^3(1.5)10^2(1.5)10^1(1.5)10^0(1.5)0=10.5
it would take it approximately 10.5 minutes to kill 10^6 of the cells.
If i should stop the heating process at 9 minutes this would have effect on some of the microbes as they are still present with 1 bacterium left which makes it not efficient.
XR
Which of the Following Statements about enzymes is Not True
A( enzymes work best at a specific pH
B( all enzymes have the same shape as their substrates
C( enzymes are proteins
D( the shape of an enzyme allows it do its job
Can someone help me with my my anatomy homework
List 7 organelles shared by both plant and animal cells.
Answer:
Structurally, plant and animal cells are very similar because they are both eukaryotic cells. They both contain membrane-bound organelles such as the nucleus, mitochondria, endoplasmic reticulum, golgi apparatus, lysosomes, and peroxisomes. Both also contain similar membranes, cytosol, and cytoskeletal elements.
Explanation:
The 7 organelles shared by both plant and animal cells are the nucleus, endoplasmic reticulum, mitochondria, peroxisomes, Golgi apparatus, lysosomes, and cytosol.
A cell is the most basic structural and fundamental unit of life.
Plant cells are eukaryotic cells with membrane-bound organelles that composed the basic unit of the plant. The major difference between the plant cell and an animal cell is that the plant cell has a cell wall.
An animal cell is present in animals and they are also eukaryotic in nature. Animal cells are enveloped by a plasma membrane and they do not have a cell wall.
The organelles that are shared by both plant and animal cells are:
nucleus,mitochondria, endoplasmic reticulum, Golgi apparatus,lysosomes,peroxisomescytosolTherefore, we can conclude that the plant cell and the animal cell shared some similar organelles together.
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In what kind of aquatic ecosystems do we have invasive species? |
sometimes called exotic, invasive, nonindigenous or non-native) are aquatic organisms that invade ecosystems beyond their natural, historic range. Their presence may harm native ecosystems or commercial, agricultural, or recreational activities dependent on these ecosystems.
Explanation:
An aqueous solution of compound x has a ph of 12. which of the following is a possible identity of compound x?
Answer:KOH
Explanation:An aqueous solution of compound X has a pH of 12. Which of the following is a possible identity of compound X?
Hyperventilation (rapid inhalation and exhalation) can result in respiratory alkalosis (increased blood pH). Why
Answer:
Because lack of carbon dioxide causes the lack of acidic HCO₃⁻ which help to the regulation of the blood's pH.
Explanation:
Hello.
In this case, since the presence of carbon dioxide in blood regulates the pH of blood by maintaining it at about 7.35 to 7.45 (slightly basic) due to the equilibrium shown on the attached picture by which the yielded HCO₃⁻ ions low down the pH because the lack of CO₂ cause a condition known as respiratory alkalosis in which the pH of the blood significantly increases.
Thus, that condition causes symptoms such as confusion, hand tremor, lightheadedness., muscle twitching, nausea, vomiting and others.
Regards.
In ecology, an ecosystem is similar to
a community. However, an
ecosystem differs in that it
includes...
3. Apply Which is
an example of a
density-dependent factor?
(Circle your answer.)
a. frost that destroys
tomato plants
b. fungus that spreads
from plant to plant
Can you guys pleaseee help me?!
Answer:
b
Explanation:
