1. write about the natural resources of ethiopia and why we need to take of them
The part of a root that is responsible for conducting water and dissolved mineral salt from the soil to the leaves is
Answer:
xylem
Explanation:
Why have plants been implicated in the devonian glaciations and not in the proterozoic glaciations?
The reason why plants have been implicated in the devonian glaciations and not in the proterozoic glaciations is; Land plants had not yet evolved during the Proterozoic.
Why have plants been dying?The Devonian glaciation occurred in south America and caused a global narrowing of the warm climatic belts, sharp regression, increased clastic sedimentation.
Meanwhile, the Proterozoic glaciation occurred near sea level in low palaeolatitudes. Thus, we can say that the reasons why plants have been implicated in the devonian glaciations and not in the proterozoic glaciations is because land plants had not yet evolved during the Proterozoic.
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In the case of sickle cell anemia, the slight alterations in the DNA of red blood cells lead to a. defects in the membranes of these cells. b. changes in the structure of the protein hemoglobin. c. poor use of glucose for energy. d. inability of the cells to make protein.
The slight alterations in the DNA of red blood cells lead to changes in the structure of the protein hemoglobin.
What is sickle cell anemia?Sickle cell anemia refers to a defect in the red blood cells in which abnormal hemoglobin is present in the red blood cells resulting in the inability of the red blood cells to efficiently transport oxygen to the tissues.
This is due to a mutation in the gene coding for hemoglobin production.
The red blood cells have a sickle shape.
Therefore, the slight alterations in the DNA of red blood cells lead to changes in the structure of the protein hemoglobin.
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In what ways are cleavage lines in the skin clinically significant? check all that apply.
In ways are cleavage lines in the skin clinically significant stretching of the pores and skin at some point of being pregnant or severe weight benefit will motive stretch marks alongside those strains.
What is the importance of cleavage strains?It is critical for fitness specialists to apprehend cleavage line guidelines due to the fact an incision made parallel to the cleavage strains is much less in all likelihood to hole than an incision made throughout them.
Cleavage strains are topographical regions at the frame in which the collagen has a tendency to be thinner that's critical for surgeons to recognize in order that they make incisions parallel to the ones strains to enhance healing.They are surgically critical due to the fact any technique ensuing in a reduction perpendicular to a cleavage line may also gape and put off healing.Read more bout the cleavage lines :
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In which life-cycle phase would the financial risks of a project be the greatest?
Initiation life-cycle phase would the financial risks of a project be the greatest.
What is financial risk in project?Most health insurance companies only cover the lowest version of a drug. It is nearly identical to the branded medicine or includes the same active component. If your doctor has prescribed the more expensive medication for a medical condition, your insurer could agree to pay for it. For instance, you might have an allergy to a component of the less expensive medication. In that situation, the prescription must be marked as "medically required" by the physician.
Construction risk, operational risk, supply risk, offtake risk, repayment risk, political risk, currency risk, and authorizations risk are typical project financing concerns. - The risk of conflict settlement Project finance is a type of secured loan distinguished by complex, yet fair, risk allocation plans.
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Comparable segments of the mitochondrial DNA sequences of two similar species are shown below. This segment of DNA mutates at a rate of two base pair per 330,000. years. The DNA sequences for Species A is CTGTCCGAAG and Species B is CTGTCCGTCG. How many years ago did these species diverge from a common ancestor? 660,000 years ago
33 years ago
330,000 years ago
6,000 years ago
The homo-logous mitochondrial sequences CTGTCCGAAG and CTGTCCGTCG suggest that species diverge from a common ancestor 660,000 years ago.
What is the mutation rate?The mutation rate indicates the number of nucleotide differences between two homo-logous sequences that emerged in evolution in a given period of time.
In this case, the mutation rate is one nucleotide per 330,000 years and here we have two mutations (CTGTCCGAAG and CTGTCCGTCG), thereby it is expected that the sequences diverged 660,000 years ago.
In conclusion, the homo-logous mitochondrial sequences CTGTCCGAAG and CTGTCCGTCG suggest that species diverge from a common ancestor 660,000 years ago.
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Please help 100 points!!!!!!
Answer:
A.) conversion of chemical energy to heat energy
D.) Photosynthesis creates energy that the plant stores, and cellular respiration utilizes the energy.
D.) The populations of marsh snails and painted turtles will decrease.
Explanation:
When energy is stored in wood, it is being stored as chemical energy. This energy is being stored in the bonds that hold the wood molecules together. Once you begin to burn the wood, these bonds are breaking. As this happens, the chemical energy turns into heat energy (aka. thermal energy) and is released into the atmosphere.
Photosynthesis converts light energy from the sun into chemical energy that can be accessed by the plant later. During cellular respiration, the plant breaks down the molecules which store the energy in the form of chemical energy and accesses the energy.
When you decreases the amount of phytoplankton, the marsh snails have less food to feed on. As a result, more phytoplankton will starve. This results in the decrease of the marsh snail population. Because the marsh snail population decreases, the same will happen to the painted turtles.
A.) conversion of chemical energy to heat energy
D.) Photosynthesis creates energy that the plant stores, and cellular respiration utilizes the energy.
D.) The populations of marsh snails and painted turtles will decrease.
Match each step of the scientific method with its description.
construct a hypothesis
communicate the results
test the hypothesis
make observations
analyze the results and
make a conclusion
ask questions
Bread, when kept in the open for a
long time, shows the presence of mold.
arrowRight
What causes mold growth on bread?
arrowRight
Changes in temperature may affect
the growth of mold on bread.
arrowRight
Keep the bread in different locations,
changing the temperature at each location.
arrowRight
Increased temperature leads to the
growth of mold.
arrowRight
Make a presentation of the data, and
explain it to the class.
arrowRight
1- C ( this is an assumption; a hypothesis is always based on an assumption.
2- F ( this states to share the results with other classmates).
3- D (this is a description of an experiment you could conduct; you test a hypothesis (usually) by conducting an experiment.
4- A (this is something you could observe during the experiment, therefore it is an observation).
5- E (this sentence is a conclusion).
6- B (This is an actual question)
What is the hypothesis?The hypothesis of most interest to the researcher is the alternative hypothesis.
For example: When we are talking about statistics, the alternative hypothesis is the one that proposes a new model or a new theory, in contrast to an old one, as in the case of the null hypothesis. Oftentimes alternative hypothesis has to be constant with the original research hypothesis in that it stems from previous research and investigation. In simple terms, the alternative hypothesis is in opposition or contrary to the null hypothesis.
Thus, this could be the answer.
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Which of these cell organelles is MOST
like a post office in that it receives,
packages/modifies, then sends
proteins and other cellular material?
the mitochondria
the Golgi body
Answer:
the golgi body
Explanation:
the golgi body
Answer:
Golgi body receives, packages/modifies, then sends proteins and other cellular materials to various destinations. So, it is MOST like a post office.
Explanation:
The Golgi bodies are made up of 4 to 8 cup-shaped, series of compartments known as cisternae which are flattened, disk-shaped, stacked pouches and connected by tubular connections.
Golgi bodies has following functions:
Its main function is the packaging, modification and secretion of proteins. It receives proteins from Endoplasmic Reticulum. It packages it into membrane-bound vesicles, which are then transported to various destinations, such as lysosomes, plasma membrane or secretion. They also take part in the transport of lipids and the formation of lysosomes.Enzymatic processing and post-translational modification occur near the membrane surface in Golgi bodies, e.g. phosphorylation, glycosylation, etc.Golgi apparatus is the site for the synthesis of various glycolipids, glycoproteins, etc.#SPJ2
Help! my nose bleed for more than 30 min and i feel abit dizzy what shoud i do, i am a little kid and my parents are sleeping because it is 6 am what should i do
Bacteria are ____________ organisms lacking membrane-bound organelles.
The blank space in the task content should be filled with; Prokaryotic (unicellular).
What are bacteria?Bacteria are a host of unicellular organisms prokaryotic in nature, and are characterized by lack of a true nucleus and other cellular organelles. The bacteria cell is most often composed of the cell wall, plasmid, cytoplasm and flagella.
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Bacteria are single-celled organisms that lack membrane bound organelles
Single celled organisms are also know as prokaryotes. The characteristics of prokaryotes includes;
- They lack nuclues
- They reproduce asexually(binary fission)
- Their cell wall is composed of amino acids and carbohydrates
Bacteria are found all over our surroundings, they can also be found in the human body. They come in different shapes and structures such as cocci, rod, vibro, spiral.
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The most prevalent antibody class in the blood is:
The most prevalent antibody class in the blood is immunoglobulin G, IgG.
What are antibodies?Antibodies are proteins which are produced by the body and form part of the immune system by binding onto antigens in order to enhance their clearance from the body.
Antibodies are found in the blood. The antibodies found in the blood include the immunoglobulins A, D, E, and G.
The most prevalent antibody class in the blood is immunoglobulin G, IgG.
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ANALYZE How does the diagram in Figure 4 show that the engineering design process is
an iterative, or repeated, process?
Answer: engineering process
Which statement best describes why the aerobic respiration of animals depends upon the photosynthesis of plants?
O The plants produce ATP for animals.
O The plants produce all of the nutrients animals need.
O The plants convert energy into a form usable by animals.
O The plants produce oxygen
required by the animals.
CC
the plant produce all the nutrients animals need
Black coat color is dominant over white coat color in guinea pigs. in addition to coat color, rough coat is dominant over smooth coat.
b. Demonstrate a cross between a heterozygous black/homozygous smooth and homozygous white/heterozygous rough. describe the phenotypes as fractions?
Saturn is close to Polaris during some years
true or false
Saturn is not close to polaris
Polaris disappears into the horizon as seen from the equator, and is not visible from the south of the equator. Finding Polaris in the Northern Hemisphere indicates that you are aware of the direction north.
What is the importance of Polaris?Directly above Earth's North Pole is the Pole Star, or Polaris. Due to its location over the North Pole, the pole star is aligned with the earth's axis. As the sole star that is stationary, it is crucial for orientation.
It makes a fairly small circle over the course of a day since it is so close to the celestial equator. As a result, Polaris is a trustworthy indicator of north, since it always remains in nearly the same location in the sky.
Therefore, it is false that Saturn is close to Polaris during some years.
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the binomial effect size display is a method for illustrating the size of:
The binomial effect size display is a method for illustrating the size of: correlation coefficients.
What are correlation coefficients?This is a term that has to do with the linear interdependence that exists between sets of data.
This helps to measure the existing strength between the various variables that are used in a regression analysis.
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What are some examples of jawed vertebrate fish?
Jawed vertebrate fishes include bony fishes, sharks, rays, and skates.
Jawed fishesJawed fishes are of two classes, namely:
Chondrichthyes: the cartilaginous fishes that include sharks, rays, and skatesOsteichthyes: the ray-finned and lobe-finned fishes which include bony fishes such as tilapia, tuna, salmon, etc.More on jawed fished can be found here: https://brainly.com/question/1078864
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A distinguishing characteristic that can be inherited is a (n)
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Patient: 67 year old female diagnosis: heart failure prescription: daily dose of 48.5mcg of digoxin. how milligrams would be
Assuming the body weight of the woman is 67 kg, milligrams of digoxin required per day for the woman will be 3.25 milligrams.
What is drug dosage?Drug dosage refers to the amount of drug required to be administered to a patient per given time based on body weight or age.
The dosage for digoxin for treatment of heart failure for the 67 year old woman is 48.5 mcg/kg body weight.
Assuming the body weight of the woman is 67 kg, milligrams of digoxin required per day for the woman will be 48.5 * 67/1000 = 3.25 milligrams.
In conclusion, the dosage of drugs depends on age and body weight.
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Please don't answer if you arent 100%
what is the deepest ocean zone called?
a. abyssal
b. intertidal
c. benthic
d. pelagic
Answer:
Pelagic
Explanation:
The deepest regions of the sea are Hado pelagic
answer :)
Harry is studying four surface features of Florida. He classifies the surface features and places them in different columns of a chart as shown below.
Surface Features
Column 1 Column 2
Sinkhole Hot springs
Caverns Geysers
Which of these titles best represents Column 2 of Harry's chart?
formed by freezing groundwater
formed by heating groundwater
formed by evaporation of groundwater
formed by chemical action of groundwater
The title that best represents Column 2 of Harry's chart is B. formed by heating groundwater
What is a Hot Spring?This refers to the geothermally heated groundwater that is formed on the surface of the earth.
Hence, we can see that from Column 2 of Harry's chart, there is the presence of Hot springs and Geysers which are both formed by heating groundwater and option B is correct.
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Answer:b
Explanation:took a test
The plasma membrane is mostly made up of molecules that have Hydro folic head and hydrophobic tails. These molecules are called
The plasma membrane is mostly made up of molecules that have Hydro folic head and hydrophobic tails. These molecules are called phospholipids.
What are phospholipids?Phospholipids are lipid bilayers that are made up of phosphate group, fatty acids and glycerol units.
These phospholipids are found in the plasma membrane. The hydrophilic head is made up of phosphate group while the hydrophobic tail is made up of fatty acids.
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Explain why the biodegradation of plastic might be more hazardous to the environment than the presence of plastic as marine debris.
Answer:
they generate a large amount of macrobiotic flora which can cause diseases to humans as well as animals
Answer:
While plastic is not generally considered biodegradable, it can be broken down by the action of photodegradation and certain microbes. The breakdown products of plastic, however, are extremely toxic to marine life and once the plastic breaks down they are free to enter into the food chain. Therefore, while plastic marine debris is hazardous and dangerous to marine organisms, the toxic breakdown products of plastics have the potential to do even more damage.
Explanation:
Sample answer :)
Which protein in the electron transport system listed in the box to the rightfunctions as diffusible soluble protein
The protein in the electron transport system listed in the box to the right functions as diffusible soluble protein is Cytochrome C.
What is the role of cytochrome c?Cytochrome c is a small heme protein that is associated with the inner membrane of mitochondria. It is a soluble protein, unlike other cytochromes, and is an essential component of the electron transport chain. It is capable of performing oxidations and reductions, but does not bind oxygen.
In this case, diffusible soluble protein is Cytochrome C is an essential component of the electron transport chain.
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a protein that is found to a carbohydrate is called a __________
A protein that is bound to a carbohydrate is called a glycoprotein in this scenario.
What is a Glycoprotein?
This refers to a type of protein in which carbohydrate is covalently attached to it.
The presence of the glycan changes the properties of the protein such as the solubility etc.
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A microbiologist has a bacterial culture with 100,000 cells per mL of nutrient broth, but needs to dilute the culture with sterile nutrient broth to 1,000 cells/mL. To accomplish this, the microbiologist should dilute 1 mL of the culture to what total volume, in mL?
A. 10
B. 90
C. 100
D. 1, 000
PLEASE EXPLAIN ASAP
To accomplish the dilution the microbiologist should dilute 1 mL of the bacterial culture in 100 mL of the total volume. Thus, option C is correct.
What is dilution?Dilution is a process of decreasing the solute concentration by the addition of the solvent in the solution. The volume for the dilution is calculated as:
Given,
C1 = 100,000 cell per mL
C2 = 1000 cell per mL
V1 = 1 mL
C1 V1 = C2 V2
100,000 × (1 ÷ 1000)
= 100 mL
Therefore, 100 mL should be used to dilute 1 mL.
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What adaptation
did lobe-
finned fish have that was
different than the previous
organisms?
A. lobes that were the beginnings of arms and legs
B. jaws that helped with catching prey
C. giving birth to live young
D. brain and vertical column
Activate Wi
Go to Settings
Answer: A
Explanation:
Lobes were the beginning of arms and legs, the correct option is A.
What are lobe-finned fish?Lobe-finned fish, unlike other fish, have a core protuberance in their fins that contains many bones and muscles.
The fins are extremely flexible and may be useful for supporting the body on land, as seen in lungfish and tetrapods.
The majority of bony fish have ray fins. These thin fins are made up of skin webs that cover flexible spines. Lobe-finned fish, on the other hand, have fins that look like stumps.
The lobe-finned fishes are the ray-finned fishes' sister group. They are distinguished by paired, fleshy pectoral and pelvic fins espoused by a single bone.
Prehistoric records clearly show that terrestrial vertebrates evolved nearly 400 million years ago from lobe-finned fishes.
Thus, the correct option is A.
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What is the function of an inclined plane?
Answer:
inclined plane, simple machine consisting of a sloping surface, used for raising heavy bodies.
stabilizing selection results in _____________ genetic diversity in a population.
a. more
b. less
