A student needs to get acquainted with different laboratory apparatuses because then they can prevent any error, accident, or hazard from happening.
While working in the laboratory, a student needs to know which apparatus is required to perform what experiment/function. They need proper practice so as to remember the specific job of every instrument.
For example, a student should know that they need to use a cover slip properly so that they can prevent any bubbles from forming on their slide while looking at it under the microscope. If they do, they potentially reduce the chances of error in their calculations.
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Which part of the flower
contains the anther and
pollen grains?
A. petals
B. pistil
C. stamen this is answer
Answer:
The anther contains pollen grains. The anther is an oval-shaped sac located at the upper end of the stamen in which pollen is produced, stored, and later released from the plant. It can appear from light yellow to dark red so that they attract pollinators (honey bees) to flowers, and make reproduction in plants possible.
Explanation:
Answer: C, Stamen
Explanation:
Select the correct answer. The energy entering this system is equal to the energy leaving the system. Based on the law of conservation of energy, how many units of energy are entering the system? Illustration of squared labeled system. The arrows on the right side line of the square and the bottom line of the square are pointing out with energy values 10 and 5 units. The arrow on the top line with question mark is facing into the square. A. 5 units B. 10 units C. 15 units D. 20 units
The units of energy entering and leaving the system total 15 units. (Option C)
Why do we have the above as the right answer?According to the rule of conservation of energy, "energy cannot be generated or destroyed; instead, it evolves from one form to another." Because you have not provided the given value, it is important to remember that the energy exiting the system equals the energy that entered the system.
In physics, energy is the quantitative quality that is imparted to a body or a physical system and is visible in the form of heat and light. The law of conservation of energy holds that energy can be transformed in form but cannot be generated or destroyed.
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Complete Question:
The energy entering the system is equal to the energy leaving the system. Based on the laws of conservation of energy, how many units of energy are entering the system?
5 units
10 units
15 units
20 units
Which statement is true regarding a chemical reaction? (1 point)
O The total number of atoms does not change, so mass is conserved in the reaction.
O The total number of atoms changes, so mass is conserved in the reaction.
O Even if the total number of atoms does not change, mass may not be conserved in the reaction.
O Even if the total number of atoms changes, mass may not be conserved in the reaction..
Answer:B) The total number of atoms does not change, so mass is conserved in the reaction.
Explanation:According to the Law of Conservation of Mass, no matter can ever be created or destroyed. The number of atoms does not change, thus the mass does not change.
Plants (such as the trees
shown in this image) that
continue to grow year after
year without dying fall into
which of these categories
of angiosperms?
A. millennials
B. annuals
C. perennials this is answer
Answer:
perennials
Explanation:
Plants that persist for many growing seasons. Generally, the top portion of the plant dies back each winter and regrows the following spring from the same root system (e.g. Purple Coneflower). Many perennial plants do keep their leaves year-round and offer attractive borders and groundcover (e.g. Tickseed, Shasta, and Ox-Eyed Daisy).
Answer: C. perennials this is answer
Which of the following DNA analysis techniques requires the most steps to complete?
STR profiling
SNP analysis
Y-STR analysis
DNA fingerprinting
The DNA analysis technique that requires the most steps to complete is DNA fingerprinting (Option D) The DNA fingerprinting takes 8 steps to complete.
What is DNA fingerprinting?DNA fingerprinting is a technique for identifying an individual from a DNA sample by examining distinctive patterns in their DNA.
The steps involved in DNA fingerprinting are as follows: The DNA is being isolated. The DNA is digested using restriction endonuclease enzymes. Electrophoresis is used to separate digested fragments based on fragment size.
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Which is one way that waves erode coastlines?
Back-and-forth movement loosens sediment and rock.
Large rocks are picked up and deposited in new areas.
Continuous impacts build up sediment and rock.
Loose sediment is picked up and blown to other locations. pls help
The option that is one way that waves erode coastlines is option A.) back-and-forth movement loosens sediment and rock.
What causes wave erosion?The main factors that cause sea wave erosion are hydraulic pressure, the force of waves hitting the beach, and the abrasion of sand and stones stirred up by the water constantly.
Note that a vibration is the back-and-forth motion of an object. Energy is carried through vibrations. A vibration is the back-and-forth motion of an object.
Hence, Sediments from cliffs and shorelines are eroded by waves. Ocean water's sediment functions as sandpaper. They degrade the shoreline over time. More erosion is brought on by larger waves and more sediment carried by them.
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Answer: a. Back-and-forth movement loosens sediment and rock.
Explanation:
Name the three most common
prokaryotic shapes?
A. bacteria, archaea, and protists
B. cocci, bacilli, and spirilla this
C. Neither of these
Answer: B. Cocci, Bacilli, and Spirilla
Explanation:
Match each part of the cell with its function.
cell wall
cell membrane
cytoplasm
ribosome
fills the cell and protects the structures
inside it
produces proteins
gives the cell its shape
separates the inside of a cell from the
environment
Differentiate between the lysogenic and lytic cycles. (1 point)
Viral proteins are synthesized during the lysogenic cycle.
O The virus injects DNA into the host cell during the lysogenic cycle.
O The host cell is destroyed during the lytic cycle.
O The host cell copies its own DNA during the lytic cycle.
Differentiate between the lysogenic and lytic cycles The virus injects DNA into the host cell during the lysogenic cycle.
The lytic cycle includes the replica of viruses using a number cellular to fabricate greater viruses; the viruses then burst out of the cellular. The lysogenic cycle involves the incorporation of the viral genome into the host cellular genome, infecting it from inside.
Inside the lytic cycle, the viral genome does no longer comprise into the host genome. within the lysogenic cycle, the viral genome consists of into the host genome and stays there throughou The main difference among lytic cycle and lysogenic cycle is that lytic cycle destroys the host cell while lysogenic cycle does no longer spoil the host mobile
The primary difference between lytic cycle and lysogenic cycle is that lytic cycle destroys the host cell whereas lysogenic cycle does not destroy the host cell. Viral DNA destroys the host cell DNA and arrests the cellular features within the lytic cycle. but, in the lysogenic cycle, viral DNA may merge with the host.
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Why is water considered a good insulator?
Answer:
Water is a good insulator
Explanation:
This is because water is very healthy for our body making us not dehydrate
what is the density of lions (in lions/km2) in the portion of the park that has been studied
The density of lions per each km² in the portion of the park that has been studied is 0.05125 lions/km², i.e., in this case this value equals to 41 lions/800 km².
What is the population density?The population density in a natural population can be obtained by dividing the number of individuals or organisms of a given species per unit of surface area in the ecosystem under study.
In this case, the studied area is 800 km² because it represents 20 percent (i.e. 20%) of an area that has 4000 km², while the number of lions in this area represents the population density and can be obtained as 41 lions/800 km2 >> 0.05125 lions per km².
Therefore, with this data, we can see that the population density is associated with the number of organisms of the same species in a given geographic area, which is generally referred to as the number of individuals per km².
Complete question:
The lion researchers in the film have studied 20% of the park and identified 41 lions. The entire Gorongosa Park is 4,000 km2. What is the density of lions (in lions/km2) in the portion of the park that has been studied?
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What evidence does the author provide to support the claim that genetic engineering has led to the advancement of
medical science?
OA. Genetic engineering involves processes such as genetic fusion that can be used to engineer the human gene
structure of cells, thereby creating improved or more advanced organisms.
B.
Genetic engineering alters the existing gene structure of an organism to create a new organism or to improve
certain chacteristics of the organism to improve its functioning.
OC. Genetic engineering allows for the production of genetically modified organisms (GMO), such as the first ever
type of insulin-producing bacteria that functions on a newer and improved level than the existing organism.
D. Genetic engineering allows scientists to artificially enhance genetic structure and holds the potential to cure
deadly diseases in humans that have no known cure.
The author provide evidence to support the claim that genetic engineering is Genetic engineering alters the existing gene structure of an organism to create a new organism or to improve certain characteristics of the organism.
Genetic engineering, also referred to as genetic alteration, is a process that uses technologies created in laboratories to change an organism's DNA. This could have adding new DNA, deleting a segment of DNA, or changing a single base pair (A-T or C-G).
Among other things, genetic engineering has been utilized in science and industry to create cancer therapies, brewing yeasts, and genetically modified plants and animals. As a component of GM technology, DNA is put into the genome of an organism. To produce a GM plant, new DNA is inserted into plant cells.
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Examples and non examples of nucleus
What environment would be least likely to rapidly grow bacteria and why?
The environment least likely to rapidly grow bacteria is a classroom desktop, option 3 because it is dry and mostly clean and not as conducive a place for bacteria which thrive in warm, moist, protein-rich environments.
How and where do bacteria thrive?Bacteria live in both hot and cold temperate environments than humans but they thrive more in warm, moist, protein-rich environments with an acidic pH. They can survive and adapt to extreme temperature regions too.
Bacteria can be found in water, swamps, soil, plants, animal, waste and so on. They strive in stratospheres of 6 and 30 miles into the atmosphere and ocean depths.
This is the full question:
What environment would be least likely to grow bacteria and why? Here are your choices:
1. The armpit of a human
2. A warm freshwater mud puddle
3. A classroom desktop
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List the steps of the Krebs cycle and the products it creates.
Answer:
Step 1: Condensation of acetyl CoA with oxaloacetate.
Step 2: Isomerization of citrate into isocitrate.
Step 3: Oxidative decarboxylations of isocitrate.
Step 4: Oxidative decarboxylation of α-ketoglutarate.
The Krebs cycle results in the production of one FADH2, two NADH, two carbon dioxide molecules, and one ATP/GTP.
Explanation:
What happens during
facilitated diffusion?
A. Molecules are moved to an
unimportant area.
B. Molecules are destroyed.
C. Molecules are moved from a
higher concentration to a lower
concentration. This
Answer:
C. Molecules are moved from a higher concentration to a lower concentration.
Explanation:
Facilitated diffusion is a type of diffusion in which molecules move from a region of higher concentration to a region of lower concentration assisted by a carrier.
Challenges in sustainable development
can you explain this diagram.. I will mark you brainlist..
help... !!!!
Answer:
Explanation:
environment is first then society then economy
which new gene formation does fit to ortholog type of homology in evolution?
Gene duplication is a new gene formation phenomenon that fits the ortholog type of homology in evolution.
What is homology in evolution?The expression homology in evolution makes reference to the emergence of similarities between two or more sequences due to a common origin, which may occur as a consequence of gene duplication and subsequent divergence of ortholog sequences in order to play different roles as genetic material in the cell of an organism.
Therefore, with this data, we can see that homology in evolution is caused by similarities due to a common ancestor and it may be due to gene duplication.
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Use friction, deformation, air pressure and force in a sentence
Pressure builds up whenever there is friction and air. And if both are present, it deforms the set. In order for friction to work, pressure and air both are important.
What is friction, deformation, air pressure and force?
Friction: the force that resists against the relative layers of liquids, solids and other materials as they slide over each other.
Deformation: It is the continuous mechanical transformation of a body from a reference configuration to its current configuration. A configuration is a set containing the positions of all particles in a body.
Air pressure: The force exerted by compressed or free air on a surface it comes in contact with.
Force: Influences that can change the movement of an object. A force can change the velocity of an object with mass, i.e. accelerate it.
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If a woman with normal vision that carried an allele for color blindness X N X n married a man with normal vision(XNY), what would be their possible offspring
What is the shape of the typical Elodea cell?
in a developing embryo, what process allows cells of the mesoderm to give rise to muscle bone, and heart tissue
Answer:
cell differentiation
Explanation:
The most observed human variations
changes gradually rather than having
discrete boundaries as expected-This
gradual change is referred to as a?
A. Cine
B. Slow change
C. Gradient
D. Clinal
The most common human variants are those that vary gradually instead of having defined boundaries as would be expected as cine
The correct answer is A
Is a gradual transition preferable?For issues that don't call for irregular change and that can be improved continuously and sustainably, gradual change is an more stable method. When there is divided government, modest, incremental adjustments are frequently the only way any change could take place.
What exactly is gradual change?Instead of happening all at once, a progressive process or change happens in little increments over time. A steady, sluggish procedure is required to lose weight. Synonyms include steady, even, sluggish, and regular Alternative Words for gradual
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what is name of the new island off iceland that has begun succesion since 1963?
Answer: Surtsey
Explanation:
Surtsey is a new island formed by volcanic eruptions in 1963-67.
In which type of cell do both DNA replication and cellular respiration take place in the cytosol?
- Animal cell
-Fungal cell
-Plant cell
-Bacterial cell
Both DNA replication and cellular respiration take place in the cytosol of a Bacterial cell.
What is a bacterial cell?
Small, single-celled organisms called bacteria exist. Nearly all areas of the world are home to bacteria, which are essential to its ecosystems. Some species can survive in environments with high pressure and temperatures. In fact, it's thought that there are more bacterial cells in the human body than there are human cells. Bacterial cells don't have a nuclear membrane therefore both DNA replication and cellular respiration take place in the cytosol. Hence, bacterial cells do both.
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How is it possible that muscle and fat cells make up 75% of human cells by weight but 84% of cells are red blood cells?
RBC’s make up about 84% of cells in the body, but they are only 4% of body weight. Whereas, 75% of total weight are fat cells and muscle cells. They’re both large cells but constitute only a minute fraction of the total number of cells.
How many cells is the human body made of?
The exact number of cells is still debatable. But to put it briefly, around 30-40 trillion. The long answer? Not yet determined.
What we do know, is that RBC’s (red blood cells) make up the majority of cells in our bodies. They make up only 4% of total mass, despite constituting 80% of all cells. The reason is that RBC’s measure 8 micrometers in diameter. The size of fat cells, however is around 100 micrometers.
The total number of cells to this date is still not defined, but we have a slight idea of what could be.
Therefore, the reason for RBC’s having 84% of cells and 75% of fat cells is their mass. RBC’s are only 4% of total weight because their measure is only 8 micrometers. Whereas fat cells are around 100 micrometers in diameter.
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Which statement describes the cyclic nature of seafloor spreading?
A. Continents are created
B. New oceanic crust is created
C. Volcanoes erupt and remove crust
D. The old crust gets thicker at subduction zones
Please hurry i have 10 minutes left
Answer:
volcanoes erupt and remove crust
Answer: the answer is C. Volcanoes erupt and remove crust
Explanation: I got it right on edge 2021
PLEASE HELP WILL GIVE BRAINLIEST
Answer:
122+293
773
because you are you still
Answer:
Notothenioidei is one of 19 suborders of the order Perciformes. The group is found mainly in Antarctic and Subantarctic waters, with some species ranging north to southern Australia and southern South America.[2][3] Notothenioids constitute approximately 90% of the fish biomass in the continental shelf waters surrounding Antarctica.[4]
773 is answer
A. without/not this
B. study of
C. life/living
What does the
prefix "a-" mean,
as in abiotic?
Abiotic is a prefix that often means "not, without." Abiotic is etymologically defined as "removed from everything related to life," much as amoral is defined as "lacking in morals."
What are abiotic factors?An ecosystem's non-living components that influence its surroundings are known as abiotic factors. Examples in a terrestrial ecology can include heat, light, and water. Salinity and ocean currents are examples of abiotic elements in a marine ecosystem.
The interaction of biotic and abiotic elements results in a special ecosystem.
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Answer:
a) without/not this
Explanation:
The prefix "a-" in abiotic means as "without/not this". Abiotic organisms are non-living components. Therefore, the option (a) is the correct answer.
Which geographic distribution is
the most common form and occurs
when individuals are located
around resources in large groups?
A. migratory
B. uniform
C. clustered
D. random
