Answer:
A biome is a large area characterized by its vegetation, soil, climate, and wildlife.
individual: a distinct, indivisible entity; a single thing, being, instance, or item.
Explanation:
PLEASE I NEED HELP ASAP!!!!!!!!!!!???? :)
Answer: Dominant
Explanation: If the trait is dominant, one of the parents must have the trait. Dominant traits will not skip a generation. If the trait is recessive, neither parent is required to have the trait since they can be heterozygous. Determine if the chart shows an autosomal or sex-linked (usually X-linked) trait.
Why is oceanic crust younger than continental crust?
Oceanic crust is younger than continental crust because it undergoes continuous formation and destruction through seafloor spreading and subduction.
The age difference between oceanic crust and continental crust is primarily due to the process of plate tectonics. Oceanic crust is constantly forming at mid-oceanic ridges through a process called seafloor spreading. This occurs when molten material from the mantle rises to the surface and creates new crust. As new crust forms, older crust is pushed away from the ridges, gradually moving away from the spreading center.
In contrast, continental crust is older because it is not continuously formed or destroyed like oceanic crust. Continental crust is composed of various rocks, including granite, and is typically thicker and less dense than oceanic crust. It is primarily formed through the collision and accretion of tectonic plates over long periods of time.
Additionally, oceanic crust is also subject to subduction, where denser oceanic plates are forced beneath less dense continental plates. This process occurs at convergent plate boundaries. When oceanic crust subducts, it is eventually recycled back into the mantle, which contributes to the overall young age of the oceanic crust.
In summary, the continuous formation of new oceanic crust at mid-oceanic ridges, along with the subduction of older oceanic crust, results in the relatively young age of oceanic crust compared to the older continental crust.
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What are cell cycle regulators
Answer: A conserved set of cyclin-dependent protein kinases (Cdks) initiate or regulate events through phosphorylation of intracellular proteins, thus controlling cell cycle progression, terminal differentiation, and apoptosis.
Explanation: Your welcome! ;D
fungus cell is a prokaryotic cell. True or false?
Please help please thank u
Which one is correct tho?
Answer:
is c
Explanation:
PLS HELP NEED IT FAST
Answer:
sunlight is essential for normal growth of pine trees
Explanation:
I think becuase photosyinthiesis needs sunlight to be able for the trees to grow
i hope this helps
-
Identify the fleshy fruit type based on the
definition.
- contains a single seed, often a stony pit
flesh comes from enlarged receptacle that
grows around the ovary, endocarp is papery
- develops from a compound ovary (several
pistils fused together), usually contains more
than one seed
Answer:
drupes
Explanation:
drupes are a fleshy fruit type, containing a single pit.
1
Some plants can be grown in water using the technique of hydroponics. The roots are in water and
supplied with the ions that they need at the concentrations that support maximum growth. Some
ions can be absorbed both by diffusion and by active transport.
(a) (i) State two features of diffusion that do not apply to active transport.
Answer:
# Diffusion is a down hill process.(flow is from higher concentration to lower concentration)
# It does not require energy.
but,
# Active transport is a uphill process.(flow is from lower concentration to higher concentration)
# It requires energy.
Two features of diffusion that do not apply to active transport are:
Diffusion is a passive process that does not require energy input, while active transport requires the expenditure of energy in the form of ATP.Diffusion occurs down a concentration gradient, from an area of high concentration to an area of low concentration, while active transport can move ions against their concentration gradient, from an area of low concentration to an area of high concentration.What is Diffusion?Diffusion is a process by which molecules move from an area of high concentration to an area of low concentration, until they reach a state of equilibrium where there is no further net movement of molecules.
This occurs because molecules are in constant random motion, and they will naturally move from areas where they are more concentrated to areas where they are less concentrated. This process does not require energy input, and it will continue until the concentration of molecules is the same throughout the system.
Active transport, on the other hand, is a process by which molecules are moved across a membrane against their concentration gradient, from an area of low concentration to an area of high concentration.
This process requires energy in the form of ATP, which is used to pump molecules or ions against their concentration gradient. Active transport is able to move molecules or ions against their concentration gradient because it uses energy to change the shape of transport proteins in the membrane, allowing them to move molecules against their concentration gradient.
Therefore, two key features of diffusion that do not apply to active transport are that diffusion is a passive process that does not require energy input, while active transport requires energy input in the form of ATP.
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explain why an Organism genotype maybe homologous but never homologous recessive.
Answer:
The only way a phenotype or genotype can be recessive is if both alleles are recessive
Explanation:
i think
Answer:It helps an organism reproduce and therefore appears more often. And since dominant alleles sometimes are heterozygous, even if an organism with the dominant gene was able to reproduce, it could still produce a recessive offspring. So I would say that the gene that helps the organism reproduce would actually be the more prevalent trait
Explanation:
A difference between food chains and food webs is that food webs are...
O bigger
Smaller
Answer: Food webs are bigger, food chain is smaller.
Explanation:
Food webs are multiple food chains into one web.
Which of the following statements is true about sensory cells in the gustatory system? Sensory cells migrate to the edge of taste buds to die after a month. Sensory cells last a very long time and are renewed about once a year. Sensory cells are located near the center of the taste bud when renewed. Sensory cells last approximately two weeks and are renewed frequently.
Answer:
Sensory cells last approximately two weeks and are renewed frequently.
Explanation:
Sensory cells last approximately two weeks and are renewed frequently. The correct option is D.
What is gustatory system?The gustatory system is the sensory system in charge of taste and flavor perception.
The gustatory system in humans is made up of taste cells in the mouth (that also detect the five texture and flavor methodologies: salty, sweet, bitter, sour, and umami), several cranial nerves, and the gustatory cortex.
Sensory cells are cells with receptors on their surface that detect information (such as sounds, light, touch, smell, taste, and temperature). This information is transmitted from sensory cells to the brain via nerves.
Taste receptor cells function similarly to neurons, but, like epithelial cells, they are rapidly and continuously renewed throughout adulthood.
Sensory cells have a lifespan of about two weeks and are constantly renewed.
Thus, the correct option is D.
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Help ASAP! Which of the following does NOT act as an electron carrier (a filled “shopping cart”) in
cellular respiration or photosynthesis?
a) NADH
b) ATP
c) FADH2
d) NADPH
Answer:
I think it’s NADH
Explanation:
Which phrase describes a landform?
a feature of the landscape
the shape of land in an area
a process that shaped Earth's surface
the difference in elevation between the highest and lowest points
Which phrase describes a landform
Answer:
A) a feature of the landscape
Explanation:
got it right on edge
A landform is the set of forms that stand out on a plane or surface, being a feature of the landscape.
What is a landform?It is an outstanding texture of a surface that has different variations, among the most characteristic reliefs of the earth's surface are mountains, plateaus and plains.
These textures are presented in the form of irregularities and unevenness within a terrestrial or aquatic ecosystem, which provides a feature in a given landscape.
Therefore, we can conclude that a landform is formed by everything that protrudes from a flat surface or that modifies it, that is, it is the set of irregularities or features of a landscape.
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What most likely happened to a species that became extinct and are only found as fossils?
Answer:
Millions of years from now, paleontologists may dig into Earth and uncover fossils from our own time. They may, like scientists today, construct a chronology of what came before them, watching past species popping into—and later out of—existence. Today, humans are continually driving species to extinction—by one estimate, almost 500 vertebrate species have gone extinct in the past 100 years—but will those future scientists be able to tell? New research suggests that it might not be easy: Only a small proportion of these human-caused extinctions will leave behind a fossil trace—and the most threatened species are the ones least likely to be preserved for posterity.
The history of life on Earth is punctuated by what researchers call the “Big Five” mass extinctions, a group that includes the dinosaur-killing Cretaceous-Tertiary extinction and several other, even more severe, events. Many scientists now want to add a sixth: the one that humans are causing all over the globe today. But it’s hard to gauge just how severe the current extinction crisis is, compared with others in Earth’s sometimes tumultuous history. Modern extinctions are documented, sometimes in real time. But the Big Five are measured using only the fossil record, a history of those species that were buried and preserved by sediments over time.
That’s why Roy Plotnick, a paleontologist at the University of Illinois, Chicago, and lead author of the study, thinks about far-flung scenarios involving future paleontologists. “We really need to look at modern day extinctions as if they were in the fossil record already, in order to make a comparison,” he says. So he and his colleagues searched fossil databases for modern mammal species—both those threatened by extinction and those that aren’t—to see how many modern extinctions would be detectable by relying only on fossils.
Explanation:
What happens to an atom if it gains an electron? *
A.It becomes negative
B.It becomes neutral
C.It becomes positive
D.None of the above
Answer:
It became negative
Explanation:
Describe the term "semi-permeable" (or "selectively-permeable) membrane. Why is it important?
Answer:
A semi-permeable membrane is a type of biological or synthetic, polymeric membrane that will allow certain molecules or ions to pass through it by osmosis. The rate of passage depends on the pressure, concentration, and temperature of the molecules or solutes on either side, as well as the permeability of the membrane to each solute. Depending on the membrane and the solute, permeability may depend on solute size, solubility, properties, or chemistry. How the membrane is constructed to be selective in its permeability will determine the rate and the permeability. Many natural and synthetic materials which are rather thick are also semipermeable. One example of this is the thin film on the inside of the egg.
Explanation:
An example of a biological semi-permeable membrane is the lipid bilayer, on which is based on the plasma membrane that surrounds all biological cells. A group of phospholipids (consisting of a phosphate head and two fatty acid tails) arranged into a double layer, the phospholipid bilayer is a semipermeable membrane that is very specific in its permeability. The hydrophilic phosphate heads are in the outside layer and exposed to the water content outside and within the cell. The hydrophobic tails are the layer hidden in the inside of the membrane. The phospholipid bilayer is most permeable to small, uncharged solutes. Protein channels are embedded in or through phospholipids, and, collectively, this model is known as the fluid mosaic model. Aquaporins are protein channel pores permeable to water. Information can also pass through the plasma membrane when signaling molecules bind to receptors in the cell membrane. The signaling molecules bind to the receptors, which alters the structure of these proteins. A change in the protein structure initiates a signaling cascade. The G protein-coupled receptor signaling provides is an important subset of such signaling processes.
I Need Help On Identifying The Characteristics Of Life That Is Illlustarated By Each Of The Following Statements.
◘HURRY PLEASE◘
↓↓↓↓↓↓↓↓↓↓↓↓↓↓
Answer:
B
Explanation:
How does being small help cells survive?
Cells are small in size because it is very important that they have a surface area to volume ratio that would allow adequate intake of food nutrients, as well as the excretion of waste materials.
A cell can be defined as the fundamental (basic), functional, structural and smallest unit of life found in all living organisms.
According to cell type, living organism are mainly divided into two (2) main groups and these are;
Unicellular organisms: these are living organisms that are single-celled i.e they have a single cell.Multicellular organisms: this category of living organisms have many (multiple) cells.It is very important that the surface area to the volume ratio of cell is small, so as to allow enough materials such as food, move through the cell membrane quickly for the survival of the cell.
Hence, cells are small in size because it is very important that they have a surface area to volume ratio that would allow adequate intake of food nutrients, as well as the excretion of waste materials.
In conclusion, the smaller a cell, the larger would be its surface area to volume ratio.
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What are the two limits of natural selections
Which phrase defines latitude?
A.height above sea level
B. north or south distance from the equator
C. east or west distance from London
D. rise and fall of the land
Answer:
b. is the answer.
Explanation:
I just took the test.
In pea plants, the allele for round seeds is dominant to the allele for wrinkled seeds. If a plant that is heterozygous for seed type is crossed with one that has only wrinkled seeds, what percent of their offspring would you expect to have wrinkled seeds?
Answer:
50%
Explanation:
This question involves a gene coding for seed shape. The allele for round seeds (R) is dominant over the allele for wrinkled seeds (r). A heterozygous plant (Rr) will therefore be round seeded.
If a plant that is heterozygous for seed type (Rr) is crossed with one that has only wrinkled seeds (rr), the following gametes will be produced by each parent:
Rr - R and r
rr - r and r
Using these gametes in a punnet square (see attached image), the following offsprings will be produced: Rr, Rr, rr and rr
Rr - Round seeds
rr - wrinkled seeds
1 out of 2 offsprings will be possess wrinkled seeds i.e. 1/2 × 100 = 50%.
The structure of DNA resembles a twisted ladder. Which structural components form the rungs of the ladder?
A deoxyribose sugars
B phosphate groups
C nitrogenous base pairs
D ribosomes
answer is nitrogenous base pairs
Answer:
The ratios of thymine and adenine were similar, as were the ratios of guanine and cytosine.
Explanation:
deoxyribose + phosphate group + thymine
Answer:
C
Explanation:
Which of the following is an example of an invasive species?
Need help immediately HELP!!!!!
Invasive species are the species which come and occupy the area and the habitat is lost when once they invade the habitat. Some of the examples of invasive species are asian carp and cane toad with many more.
What causes eutrophication ?When one species that invade the habitat and ends up the habitat of that particular area that is called as eutrophication and with that what happens is that the organisms which are living there ends up.
Ten most common of the world's invasive species are written as following :
1. Asian Carp.
2. Zebra Mussel
3. Cane Toad
4. European Starling
5. Kudzu
6. Asian long-horned beetle
7. Small Indian mongoose
Water hyacinth that is the terror of Bengal was once a decorative plant but when it was introduced to the water resources then at that time they multiplied to this extent that the species got automatically distinct from the water bodies.
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6g of calcium chloride must be heated in
order to dissolve it in a test tube of water.
After an experiment, as a test tube of salt
solution cools, salt forms at the bottom of
the test tube
As soda is heated, the amount of Carbon
dioxide dissolved in it decreases.
Calcium Chloride is more soluble when it
is heated
It take more time stirring to dissolve salt
in 100ml than it does in 200mL of water.
More salt can be dissolved in a 250ml
beaker of water than in a 100ml beaker of
water
More sugar can be dissolved in Hot tea
than iced tea
The solubility of Sodium Chloride is
almost identical at 15, 20, 25 and 30°C
Supports conclusion
Brings into question this conclusion
Neutral observation
Answer:
See explanation
Explanation:
I will try to explain each point mentioned to the best of my ability.
The dissolution of calcium chloride in water is endothermic hence more solute dissolves as the temperature increases. When the solution cools, the solubility of the solid also decreases with decreasing temperature hence the solid reappears.
When soda is heated, carbon dioxide gas is evolved thereby decreasing the amount of dissolved carbon dioxide.
Let me state that increase in volume of solvent increases the amount of solute that can dissolve in it. This is why 250ml volume of solvent can dissolve more solute than 100ml of solvent.
Also, temperature is an important factor when discussing the solubility of a solute. This is why the temperature at which a certain value of solubility is quoted must be indicated. For solids, solubility increases with increase in temperature.
Lastly, the solubility of sodium chloride is independent of temperature. This is clearly seen by plotting a solubility curve.
The 'run' in rise/run tells us which directions to go on the -axis?
Answer:
x- axis
Explanation:
x- axis is left to right, the run
y- axis is up to down, the rise
Answer:
The 'run' goes through the x-axis(horizontally). It can either go left or right depending on the direction of the slope.
Which statement about water best illustrates the property of adhesion?
Answer:
The correct answer is- water droplet found on a spider web in the morning
Explanation:
Hope this helps u
Crown me as brainliest
Which of the following are not considered to be decomposers?
Plants
Eubacteria
Archeabacteria
Fungi
Why is it important for gametes to be haploid cells?
The reason why it is important for gametes to be haploid cells is because: when the sperm and the egg fuse together the living sex cells will have 46 chromosomes.
Gametes are also referred to as sex cells and they can be defined as the reproductive cells in a living organism.
Generally, the male reproductive cell is known as a sperm while the female reproductive cell is known as an egg.
Since gametes are reproductive cells or sex cells, they are typically made up of haploid set of chromosomes.
Basically, it is very important for gametes to be haploid cells so that when the sperm and the egg fuse together, the living sex cells will have a total of 46 chromosomes.
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What did Watson and Crick’s model of DNA show?
sugars and phosphates on the inside
nitrogenous bases on the outside
a single nucleotide strand twisted in a spiral
two nucleotide strands wound in a double helix
Answer:
D.) Two nucleotide strands wound in a double helix.
Explanation:
Their model shows that DNA is composed of two double strand of nucleotide which are twisted around each other and run in antiparallel direction. the phosphate group and pentose sugar are present on outside, while nitrogenous base is present on inside
Answer:
Franklin produced an image containing "two strands twisted with double helix and phosphate back bone with base pairs".
Watson and Crick taken the x-ray image created by Franklin which lead to discovery of accurate model of shape of DNA.
.
Explanation:
2020
