Answer:
A: endocine
Explanation:
In pea plants, flower color is controlled by a pair of alleles where purple (P) is dominant to white (p).
a. True
b. False
Answer:
True
Explanation:
An allele refer to two alternative forms of the same gene. An allele is a pair of genes found on a given chromosome. Usually, every allelic pair has one which is dominant and one which is recessive.
The dominant allele is expressed while the recessive allele is not expressed.
The colour of the pea plant is controlled by a pair of alleles wherein purple (P) is dominant to white (p).
The expressed colour of the pea plant(phenotype) is dependent on the arrangement of the genes(genotype) of the pea plant.
How can photosynthesis be related to cellular respiration?
Question 8 options:
These two processes have nothing in common.
They both have the same reactants (need the same things).
They both produce the same products.
What's produced (made) by one is needed (the reactants) for the other.
According to the diagram below, what type of organism converts atmospheric nitrogen (N2) to ammonia (NH3) and then to nitrites (NO2-) and nitrates (NO3-)?
Answer: Nitrogen-fixing Bacteria
Explanation:
In the Nitrogen cycle, nitrogen fixing bacteria are very important in ensuring that plants get nitrogen to enable them grow and as animals have to eat plants, these bacteria are essential for our survival as well.
Plants are unable to use atmospheric nitrogen but nitrogen-fixing bacteria are able to synthesize ammonia from atmospheric nitrogen. They can then convert this to Nitrites and Nitrates which are more useful to plants and animals by extension.
What is the important organelle that eukaryotic cells have and prokayotic cells don't have?
4. How should the fossils in the sediment layers of Earth appear if species have evolved over time?
A. All of the layers should contain fossils of simple organisms.
B. All of the layers should contain fossils of complex organisms.
C. The lower layers should contain fossils of more complex organisms.
D. The upper layers should contain fossils of more complex organisms.
Answer:
D the upper layers
Explanation:
at first, lifeforms were simple. they got more complex for a variety of reasons, including to adapt to the changing earth. simple organisms will be lower down for that reason.
The lower layers should contain fossils of more complex organisms. So, the correct option is (C).
What are Fossils?A fossil is defined as the preserved remains, imprint or trace of something that once lived from a previous geological era. Examples of fossils are bones, shells, exoskeletons, fossilized traces of animals or microbes, objects preserved in amber, hair, petrified wood, and DNA residues. The totality of fossils is known as the fossil record.
There are four main types of fossils which are formed in different way are conducive to preserving different types of organisms. Fossils are mold fossils, cast fossils, trace fossils and true form fossils.
Fossil layers are fossils that formed in sedimentary rock that formed in layers by depositing and pressing sediments on top of each other.
Thus, the lower layers should contain fossils of more complex organisms. So, the correct option is (C).
Learn more about Fossils, here:
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Understanding Dose vs Exposure
John works applying pesticide X to agricultural fields. He spent the morning cleaning out a tank that had contained concentrated pesticide X. The tank was large and he was standing in water all morning (4 hours) power washing the tank. Human skin is a wonderful barrier to entry of compounds as long as it is dry and intact, but wet wrinkly skin can absorb toxins. About 5% of pesticide X absorbs into wet skin and John was in contact with water that had a total of 32 g of the pesticide in it.
After the morning is over, John has lunch but does not wash his hands; he has 2 g of the pesticide on his hands. Pesticide X has about 90% absorption from an oral dose.
Finally, John works in the field in the afternoon a crop plane flies over dusting the crops with pesticide X, the air he breathes in has a total of 5 grams of the compound in it. Pesticide X is known to have absorption of about 50% through inhalation.
What is John’s exposure to Pesticide X and what is his dose?
Route of Exposure Exposure (grams) Dose (grams)
Dermal
Oral
Inhalation
Total
Looking at the total exposure and dose, what percentage of his exposure was a dose?
Answer:
The correct answer is - 15.13%
Explanation:
According to the question, the exposure of the pesticide X to the skin of John is by different routes and amount of the exposure is given and the percentage value is calculated as well:
Route of exposure --- exposure in gram---Dose in gram
Dermal ------------------------32-----------------------32*5/100= 1.6
Oral------------------------------2-----------------------2*90/100= 1.8
Inhalation----------------------5-----------------------5*50/100= 2.5
Total --- -----------------------39 -----------------------5.9
On the basis of this, the exposure is mainly by inhalation, the total exposure is about 39 grams about 5.9 percent. However,
The percentage of dose exposure = (5.9/39)*100
= 15.13%
Can someone help me ASAP!!!
Answer:
rrkufhjgfyrugf5td89yed/learningnice.com/ffiuvfk/answer
Explanation: u can find the answer there
HELP STAT!!!!!!!!!!!!
Answer:
B
Explanation:
What are the three
parts of the hair SHAFT?
Answer:
The hair shaft is comprised of three layers: the cuticle, cortex, and medulla.
Explanation:
Answer:
Hair shaft is consisted of three layers: cuticle, cortex and in certain cases medulla. Flat and square-shaped cuticle cells are adhered tightly to the cortex cells proximally.Explanation:
what is the botanical name of beans
Answer: The common botanical name for beans is Phaseolus vulgaris.
Answer:
Vhaseolus Vulgaris
Explanation:
The botanical name of bean is Phaseolus Vulgaris
Складіть ланцюги живлення, починаючи з продуцентів і закінчуючи редуцентами:
а) сосна звичайна, жук-мертвоїд, хрущ (майський жук), бактерії гниття, шпак, плітка, неясить
сіра, мідянка;
б) рак, карась, павук-сріблянка, чапля сіра, ропуха озерна, щука, денні черви, хара ламка.
Answer:
i dont speak ur language sorry
Explanation:
Rocky's class recently got pet turtles. When putting together the habitat, decomposers were added to the soil, as well as some smaller organisms that turtles eat. Some students wanted to get "fake" plants for the terrarium, but Rocky insisted that this would negatively affect the carbon and oxygen cycles.
Which of the following reasons support why Rocky is correct?
Group of answer choices
A) Carbon won't be removed from the air.
B) Photosynthesis won't occur.
C) The turtles won't be able to breathe.
D) All of these are correct.
Will mark as brainliest if correct
Answer:
The correct answer is - D. All of these are correct.
Explanation:
It is clear that the terrarium is sealed or not, if it is open to the outside environment or not. Considering it sealed and no outer interaction, then if a fake plant to this terrarium then there will be no photosynthesis will take place as there are no green plants to capture the sunlight and make glucose and no way to release oxygen for the other organisms.
If in this no green plants then the removal of CO2 will not be possible. Higher amount of carbon and without oxygen turtles would not be able to survive even though there is food for them.
Providing an example from your day-to-day life, explain the functions of the nervous system.
The diagram shows the five kingdoms of life. The place where the circles intersect include
only the characteristics that they have in common.
Which characteristic belongs in the shaded area?
What pressure, in atm, will be exerted by 8 moles of a gas at 300
Kelvin if it is contained in a 50 Liter vessel?
Answer:
3.94 atm
Explanation:
Using the general gas law equation as follows;
PV = nRT
Where;
P = pressure (atm)
V = volume (L)
n = number of moles (mol)
R = gas law constant (0.0821 Latm/molK)
T = temperature (K)
According to the information provided in this question;
P = ?
V = 50 L
T = 300K
n = 8 mol
Using PV = nRT
P = nRT/V
P = (8 × 0.0821 × 300) ÷ 50
P = 197.04 ÷ 50
P = 3.94 atm
what makes zebra mussels an invasive species?
Answer:
Zebra mussels negatively impact ecosystems in many ways. They filter out algae that native species need for food and they attach to--and incapacitate--native mussels. Power plants must also spend millions of dollars removing zebra mussels from clogged water intakes.
Capillaries are very thin, narrow blood vessels that allow for the transfer of oxygen, carbon dioxide, and nutrients. The image shows
how normal red blood cells and sickle-shaped red blood cells flow through a capillary,
Use information in the image to describe two ways that the sickle cell gene mutation affects the ability of red blood cells to perform
their normal function
Answer:
less packaging of oxygen
Explanation:
normal RBC (red blood cells) have a large surface area for oxygen packaging due to its biconcave shape but when mutation occurs the RBC being produced by the short bones is sickle shaped reducing surface area of haemoglobin exposed, responsible for packaging oxygen so tissues don't get right amount of oxygen
What do coral reefs and estuaries have in common?
Answer: hewo, there! your answer is below
stuaries are areas of water and shoreline where rivers meet the ocean or another large body of water, such as one of the Great Lakes. Organisms that live in estuaries must be adapted to these dynamic environments, where there are variations in water chemistry including salinity, as well as physical changes like the rise and fall of tides. Despite these challenges, estuaries are also very productive ecosystems. They receive nutrients from both bodies of water and can support a variety of life. Because of their access to food, water, and shipping routes, people often live near estuaries and can impact the health of the ecosystem.
Explanation: Here's some Info Below <3
shallow water, reef-building corals have a symbiotic relationship with photosynthetic algae called zooxanthellae, which live in their tissues. The coral provides a protected environment and the compounds zooxanthellae need for photosynthesis. In return, the algae produce carbohydrates that the coral uses for food, as well as oxygen. The algae also help the coral remove waste. Since both partners benefit from association, this type of symbiosis is called mutualism.
Deep-sea corals live in much deeper or colder oceanic waters and lack zooxanthellae. Unlike their shallow water relatives, which rely heavily on photosynthesis to produce food, deep sea corals take in plankton and organic matter for much of their energy needs.
Three complex carbohydrates that are very important in living things are starch, cellulose, and glycogen (see below).. All three of these polysaccharides are polymers of glucose, yet they behave very differently in our bodies. We can digest starch and glycogen, but not cellulose. Examine the drawing of these three polysaccharides below. What differences can you see between these molecules that might explain why
Answer:
The functional group highlighted in pink alternates its position on the carbohydrate molecule
Explanation:
Complex carbohydrates or polysaccharides are large molecular weight molecules composed of repeating unit of simple carbohydrates which are joined together by covalent bonds known as glycosidic bonds. These glycosidic bonds are foremd between the carbon at position number 1 (known as the anomeric carbon) of one simple carbohydrate and a hydroxyl group of another simple carbohydrate.
The configuration of these linkages determines the properties and functions of the complex carbohydrates. The complex polysaccharides starch, glycogen and cellulose are all composed of glucose monomers linked together by glycosidic bonds.
In storage polysaccharides such as starch and glycogen whose function is to store the simple carbohydrate glucose for when needed by the organism, the glycosidic linkages are said to be in α-linkages, placing the functional groups (CH₂OH) all on the same side.
Even the branching points in glycogen are all in α-linkages. Humans have the enzymes to break these bonds so that starch and glycogen molecules can be metabolized by the body.
In a structural polysaccharide such as cellulose, the glycosidic linkages are β-linkages which results in alternating positions for the functional groups. Since humans do not have the enzymes responsible for the breakage of these linkages, hence, we cannot digest cellulose in our bodies.
Try This one out and I’ll give you brainliest
List 3 properties of the
hair's cuticle
Answer:
Cuticle, Cortex, MedullaBUTProperties include: SmoothnessFlatnessMalleabilityExplanation:
These are the main three properties of the hair's cuticle.
Answer:
smoothness
Explanation:
elasticity, softness
Which is the best definitions for mutation
Answer:
B or A it produces another one of itself.
Explanation:
"Mutation , an alteration in the genetic material (the genome) of a cell of a living organism or of a virus that is more or less permanent and that can be transmitted to the cell's or the virus's descendants. The genomes of organisms are all composed of DNA, whereas viral genomes can be of DNA or RNA."
Credits to: yahoo and more
Most likely B.
What are the key things to learn about a cell?
Answer:
1
Explanation:
all living organisms are made up of cells.
HELP!!! I need the answer and reasoning!!! I’ll mark as brainliest!!!
Answer:
A. Destruction of terrestrial biota
Explanation:
all the other answers would decrease the carbon output. thickening of ocean sediments reinforces a carbon reservoir (which stores carbon), reduction in the use of fossil fuels would reduce the amount of carbon emissions, increase in marine biota = increase in carbon storage because marine biota is also a carbon reservoir.
Destruction of terrestrial biota would cause excess output because terrestrial biota is a carbon reservoir, and all of that carbon would be released into the carbon cycle.
Part of an important cellular process involving a DNA strand is modeled below.
What is the purpose of this cellular process?
Answer: Cellular respiration is the process by which cells in plants and animals break down sugar and turn it into energy, which is then used to perform work at the cellular level.
Explanation: In simpler words, it provides energy for the cell to do basic needs.
Which numbers identify the organelles that are present in BOTH plant and animal cells?
Answer: answer is A. Because both plants and animals have plasma membranes, cytoplasm, and mitochondria.
Further Explanation
Cell organelles are components of the cell and life. Cell organelles are the most important part of cells that function to regulate the life processes in cells. Cell organelles are in a part called the cytoplasm. Cell organelles consist of several parts, each of which has a different function but functions as a system that supports the life processes that occur in cells.
Animal Cell Organelles
Animal Cell Organelles are forms of eukaryotic cells that form body tissues and then form organs.
Animal cell organelles consist of:
vesicles
mitochondria
centriole
the nucleus
nucleoli
chromatin
ribosome
endoplasmic reticulum
microtubules
plasma membrane
Vacuoles
cytosol
core membrane
Golgi body
lysosome
vesicles.
Cell Plant Organelles
The functions of these plant cells include
as a constituent of the body of plants
activator of all activities in the body of plants,
related to the process of growth and development in plants,
carrier of genetic traits in plants, and
related to plant reproduction.
Cell Plant Organelles consist of:
Cell nucleus (nucleus)
Chloroplast (Plastida)
Ribosome
Mitochondria
Golgi Agency
Endoplasmic reticulum
Vacuoles
Peroxisomes
Explanation:
can you please help me
Answer: 27. arcuate 28. enzyme. 29. three regions
Explanation:
Ophrys sphegodes, the early spider orchid, has flowers with yellow-green sepals and petals and one highly modified, velvety brown central petal at the base of the flower. There is single male anther is found at the tip of the column. The stigma is on the underside of the column just below the anther.
Required:
a. Is the flower complete or incomplete?
b. Is the flower perfect or imperfect?
c. Is the flower radially or bilaterally symmetrical?
Answer and Explanation:
a. This is a complete flower. Complete flowers are those formed by chalice, corolla, androecium and gynoecium. In the case of the flower presented above, we can see that it has gynoecium because it has a stigma that is part of the gynoecium composition. We can also see that she has androecium, because she has an anther that is part of the composition of androecium. The flower also has a corolla and chalice, since the chalice is formed by the sepals and the corolla by the petals.
b. This is a perfect flower, as we can see that androecium and gynoecium are present in the same flower. Imperfect flowers are those with only androecium or gynoecium.
c. The flower has bilateral symmetry, which is common in all orchids. This type of symmetry allows the flower to only be divided into two equal parts. Radial symmetry, on the other hand, allows flowers to be divided into many equal parts.
population of zebras experienced ten births, six deaths to predation, three deaths to
disease, three individuals
pining the population, and zero individuals leaving. What is happening to the population growth?
It is increasing.
N
It is decreasing.
It is staying the same.
It reaches carrying capacity.
How would expect the biomass to change after ten days if seeds and plants were provided the following conditions?
No light, water (seeds sprouted): Stay the same, decrease, or increase
Light, water (seeds sprouted): Stay the same, decrease, or increase
Light, no water (seeds did not sprout): Stay the same, decrease, or increase
Answer:
La biomasa (energía) se refiere a la biomasa «útil» en términos energéticos formales: las plantas transforman la energía radiante del Sol en energía química a través de la fotosíntesis, y parte de esa energía química queda almacenada en forma de materia orgánica; la energía química de la biomasa puede recuperarse quemándola directamente o transformándola en combustible.
Explanation: