Answer:
A cell is the structural and functional unit of life. Each cell contains smaller organelles that perform various functions such as metabolism, transportation and secretion of substances. ... The various structures and organelles in a cell float in a liquid called the cytoplasm
In a given year, which would result in the greatest increase in population size?
A. high birth rate, high death rate, high immigration, high emigration
B. high birth rate, zero death rate, high immigration, zero emigration
C. zero birth rate, low death rate, zero immigration, low emigration
D. zero birth rate, zero death rate, low immigration, high emigration
Answer:
B. High birth rate, zero death rate, high immigration, zero emigration
Explanation:
High birth rate would mean more people being born resulting in a higher population. Zero death rate would mean that no one is dying and leaving the population. Immigration means when people come to a foreign country to live there, meaning that the population would grow. Emigration means the opposite of immigration. So that would mean that the people would be leaving your country. Resulting in a lower population. So, B is the correct answer!
Hope this helps! :3
Use insulin and glucagon as examples, explain how negative feedback of these two hormones regulate the blood glucose level and maintains homeostasis. (No links or I'll Report
Answer:
glucagon works to counterbalance the effects of insulin.
Explanation:
when insulin is released, the blood sugar in the body decreases; however, when the blood sugar is low enough, the system instead releases glucagon which breaks down the stored sugar and balances the blood sugar level in the body. if the level goes too high then insulin will be released again.
In a population of giraffes, some of them have longer necks than others
Answer:
This is due to evolution
Explanation:
The giraffes with longer necks can reach food more easily than the short neck giraffes so as to reach food in higher trees.
In rabbits, black fur (B) is dominant to brown fur (b). Consider the following cross between two rabbits.
Bb x Bb
B
b
B
1
2
b
3
4
Refer to the illustration above. The device shown, which is used to determine the probable outcome of genetic crosses, is called a
Answer:
Punnet square
Explanation:
Question 1
Which is the correct order of steps of mitosis.
1. Metaphase
II. Telophase
III. Prophase
IV.Anaphase
Answer:
III,I,IV,II
Explanation:
Always remember PMAT when looking at mitosis. That's the acronym. Prophase, Metaphase, Anaphase, Telophase.
Answer:
B or 3 1 4 2
Explanation:
prophase, metaphase, anaphase, telophase.
3 1 4 2
Biotic and abiotic factors affect population density and dispersion. A) Explain the factors that affect a population's density. B) Describe the types of population dispersion, with examples, and the factors that influence them.
Answer:
Water supply, climate, shape of the land, vegetation, soils and availability of natural resources.
Explanation:
Water supply, climate, shape of the land, vegetation, soils and availability of natural resources are the factors that affect population density of an ecosystem. There are three types of population dispersion are uniform dispersion, random dispersion, and clumped dispersion. In uniform dispersion, individuals of a population are more or less evenly distributed for example, allelopathy plants. In random dispersion, individuals are distributed randomly in the ecosystem for example, dandelions plants. Clumped dispersion is when individuals in a population are clustered together for example, oak trees.
Which phase of meiosis separates homologous chromosomes?
Answer:
C.
Explanation:
Try putting C.
hope this helped
In pea plants, the allele for smooth pods (S) is dominant over the allele for constricted pods (s).
Which of the following pairs of terms are correctly matched?
Choose 1 answer:
Ss - phenotype; smooth pod - genotype
SS - genotype; constricted pod - phenotype
SS - phenotype; constricted pod - genotype.
SS - genotype; constricted pod - phenotype
Answer:
ss - genotype; constricted pod - phenotype
Explanation:
trust me Lol
Pea plants having gene control phenotype of pod shape S is dominant having phenotype smooth and phenotype constricted pods having s genotype, hence option d is correct.
What is the difference between genotype and phenotype?Phenotype is a physical observation of a trait which control by agene
and genotype is a genetic observation that can not be seen physically.
The allele which controls the phenotypic character of a plant is called the dominant over the other allele which can not show its expression, the allele is always present in a group but only the dominant will show its expression.
In a pea plant, if the allele for smooth is dominant over the other, it shows expression in allelic combination and masks the expression of constricted pods.
Therefore SS is the genotype and the constricted pod is the
phenotype, hence option d is correct.
Learn more about genotype and phenotype, here:
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1. Within food chains, matter is
a) constantly increasing
b) constandy decreasing
c) always changing from one element to another
d) alavays recycled from one chemical form into
another
Answer:
C
Explanation:
When an organism eats anothee organism matter transfers
Horticulture 20 points
What describes how commodity check-off organizations operate?
Answer: its a
Explanation:
What provides energy to muscles and helps keep
them strong?
Answer:
The source of energy that is used to power the movement of contraction in working muscles is adenosine triphosphate (ATP) – the body's biochemical way to store and transport energy. However, ATP is not stored to a great extent in cells. So once muscle contraction starts, the making of more ATP must start quickly.
Answer:
adenosine triphosphate (ATP)
Explanation:
Creatine phosphate can supply the energy needs of a working muscle at a very high rate, but only for about 8–10 seconds.
en que conciste la funcion de relacion?
What would happen to the bison population if a
drought caused many of the grasses in the prairie
ecosystem to die?
O A. The bison population would decrease
quickly
O B. The bison population would not change in
response to a change in the amount of
grasses.
C. The bison population would increase
quickly.
D. There is not enough information to form a
hypothesis about a change in the bison
population in response to a change in the
amount of grasses.
During the Human Genome Project, scientists created a gene map showing the relative location of each known gene on every human chromosome. This map led to the discovery that the human genome is made up of about how many genes?
Answer:
Approximately 20,500 genes
Explanation:
The Human Genome Project (HGP) was a 13-year international research effort aimed at determining the entire DNA sequence of the human genome. The HGP was launched in 1990 and completed in April 2013. This project helped to identify and physically map all the genes of the human genome. The sequence obtained from the HGP has been a very useful point of reference in order to identify and characterize mutations associated with genetic disorders. The HGP predicted approximately 20,500 genes (each of them produces an average of three proteins), which are distributed in the 23 pairs of chromosomes in the cells of our body.
Explain the role of adrenaline in the formation of emotional memories.
I don’t understand it, if someone can explain maybe what I have to do and put into each Column or give me the answer either way would help a lot. Thank you.
Answer:
First, describe each type of evidence (eg. Molecular biology is comparing DNA sequences to determine common ancestry). Then provide examples of how those pieces of evidence support the theory of evolution. For example, for one of the comparative anatomy examples, you could say that organisms that contain similar structures most likely diverged from a common ancestor.
I hope this gets you on the right track.
Explanation:
how the cells in your body are different from one another. Look at the different types of cells above, and make a list of how they differ. After you have made your list, consider why they have these differences.
Answer: Different cells have different jobs to do. Each cell has a size and shape that is suited to its job. Cells that do the same job combine together to form body tissue, such as muscle, skin, or bone tissue. Groups of different types of cells make up the organs in your body, such as your heart, liver, or lungs.Differentiation means that one cell performs a different function than another cell, depending on where it is in your body. ... All the cells contain the same genetic material and all of them are from one original cell that started as a fertilized egg, but they look different and act different from one another. Under a microscope, fat cells look like bulbous little spheres. Like other cells in the body, each has a cell membrane and a nucleus, but their bulk is made up of droplets of stored triglycerides, each of which consists of three fatty-acid molecules attached to a single glycerol molecule. Skin cells are specialized to be quickly shed and replaced, and do not have much mitochondria (which helps produce energy). Muscle cells, conversely, have lots of mitochondria because they need energy to produce movement. Unlike many other cells, red blood cells have no nucleus and can easily change shape, helping them fit through the various blood vessels in your body. Unlike most other eukaryotic cells, mature red blood cells don't have nuclei. When they enter the bloodstream for the first time, they eject their nuclei and organelles, so they can carry more hemoglobin, and thus, more oxygen. Each red blood cell has a life span of around 100–120 days. Skin cells are specialized to be quickly shed and replaced, and do not have much mitochondria (which helps produce energy). Muscle cells, conversely, have lots of mitochondria because they need energy to produce movement. brainliest??
Explanation:
Which of these answer choices best describes the overall effects that would occur in an animal that consumes this plant?
Answer:
The majority of ATP will not form.
Explanation:
The poison leaf plant, also known as gifblaar contains fluoroacetic acid, a compound that shut down the Krebs cycle that leads to less production of ATP because Krebs cycle drives the formation of electron carriers. These electron carriers are very important because these electron carriers carry the energy that is used to create a large number of ATP molecules in the final steps of aerobic respiration so we can conclude that majority of ATP will not form due to poison.
ver a long period of time, flower shapes and color variation have changed as a direct response to attract more pollinators, such as bees and hummingbirds. This is an example of --
Predation
Competition
Parasitism
Commensalism
Answer:
This is an example of parasitism
Ver a long period of time, flower shapes and color variation have changed as a direct response to attract more pollinators, such as bees and hummingbirds. This is an example of Predation. Thus, option A is correct.
What are predators?A predator is a creature that eats all or a portion of the body of its victim, which may be alive or recently deceased. Predators are distinguished from decomposers, such as fungus and bacteria, which break down the remaining remnants of dead species, by the phrase "living or recently killed."
We can confidently classify a lion as a predator if we witness it devouring a zebra. However, the zebra is included in the wide definition as well! Prey for a predator can include both plants and fungi as well as living things.
Additionally, a predator is not required to kill its victim. Instead, it can just remove a part of the prey's body and leave it alive, like a grazing cow or a bloodsucking mosquito. Herbivory is the term for a predator-prey situation in which an animal or insect eats a plant; herbi- stands for plant, and -vory implies eating.
Therefore the correct option is B.
Read more about predators, here
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What do pesticides, heavy metals, hazardous waste, mining for metals, mining for ores, all have in common?
Answer:
pollution of land and water
Explanation:
Pesticides, heavy metals hazardous waste and mining for metals or ores all cause land pollution.
These contaminate the land kill the useful microbes present in the soil. Moreover, when used excessively these chemical enter in our food chain and through into our body and cause various disease. Minamata disease in japan is one such example cause be mercury contamination.
These cause water pollution too. Chemical waste in water give rise to eutrophication and leaching.
What would be made in DNA replication using the following DNA strand – ACT GGA
A. ACT GGA
b. TGA CCT
c. UGA CCU
d. UGU CCA
Blood type is determined by multiple alleles and can be used to determine the possible parents of an offspring. In this case, the mother has blood type B, and her child has blood type A. There are two possible fathers for this child. The phenotype of one man is type O, and the phenotype of the other man is type AB. What is the genotype of the man who is the father?
A. IAIB
B. IAio
C. ioio
D. IBio
Answer:
A. IAIB
Explanation:
Since the child has blood type A and the mother is B, one man having blood type O makes it so that the child cannot be blood type A.
IAIB is the genotype of the man who is the father.
What are Genotypes?The type of variant present at a specific locus (i.e., region) in the genome is scored by what is known as a genotype. Symbols can be used to symbolize it.
For illustration, BB, Bb, and bb could be used to denote a certain gene variant. The actual DNA sequence, such as CC, CT, or TT, can also serve as a representation of a genotype.
In a single experiment, the genotypes at millions of sites in a genome can be determined using DNA sequencing and other techniques. Some genetics influence an individual's phenotype, or observable traits.
Therefore, IAIB is the genotype of the man who is the father.
To learn more about Genotype, refer to the link:
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What population distribution pattern works best when doing random sampling? Why.
A. Clump
B. Random
C. Uniform
Answer:
Dispersion or distribution patterns show the spatial relationship between members of a population within a habitat. Individuals of a population can be distributed in one of three basic patterns: uniform, random, or clumped.
Explanation:
26. Which equation is NOT balanced?
a. 4H, +202 + 4H2O
b. H2 + H2 + O2 -> H2O + H2O
c. 2H2 + O2 -> 2H2O
d. 2H2 + O2 + H2O
Answer:d. 2H2 + O2 -> H2O
Explanation:
The endoplasmic reticulum is a series of folded _______________ which are used by the cell for the transport of materials through the cell.
a)nuclei
b)membranes
c)molecules
d)atoms
What is an organism that has similar characteristics and
can reproduce?
Gene flow
Mutation
Species
Organism
Explanation:
species are the group of organisms which are compatibly reproduce
WILL GIVE BRAINLISTTT!!! After learning about the conditions under which extremophiles live, do you think it is reasonable to argue that life could probably exist on other planets? Explain.
Answer:
Yes, as extremophiles are able to live in extreme conditions, like the extreme conditions that many other planets have.
What connective tissue is found in joints and provides a
smooth surface for bones to move against?
A community is concerned that its river has become polluted. Analysis of
water samples shows small amounts of over 20 different chemicals.
Which of the following is the most likely cause for the increase in
pollution?
A
The increase is due to agricultural point source pollution.
B
The increase is due to industrial point source pollution.
C
The increase is due to residential non-point source pollution.
D
It is impossible to determine.
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Answer:
B. The increase is due to industrial point source pollution.
Explanation:
Pollution is the release of harmful substances into land, air or water. The harmful or toxic substances are called POLLUTANTS. According to this question, a community discovers via analysis that its river is now polluted with small amounts of over 20 different chemicals.
This chemicals is a pollutant that can likely emanate from industrial companies and industries that produces these harmful chemicals as waste. Hence, the increase is due to industrial point source pollution.
if you have 6% guanine how much of the other bases do you have? please hurry
100% total of all 4 bases and Guanine and Cytosine need to have 1:1 ratio and Adenine and Thymine need to have 1:1 ratio (This is the Chargaff's rules I think)
6% Guanine must also mean 6% Cytosine
6 + 6 = 12 100 - 12 = 88 88/2 = 44
So 44% of Adenine and 44% of Thymine