Answer:
QUESTION:
Which problem do you think contributes most to water scarcity?
ANSWER:
Water shortages may be caused by climate change, such as altered weather patterns including droughts or floods, increased pollution, and increased human demand and overuse of water. A water crisis is a situation where the available potable, unpolluted water within a region is less than that region's demand.
Explanation:
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9. A gene has the base sequence that starts with: TAG CAT GGC AT
What would be the mRNA base sequence formed during transcription, using the DNA sequence shown above?
Answer:
AUC GUA CCG UT
Explanation:
when you are dealing with mRNA these bases transcribe to each other
guanine= cytosine
adenine= uracil
thymine=adenine
Note:
when you are transcribing from DNA to mRNA remember T=A but A does NOT equal T. A=U in a mRNA sequence
Babies typically double their birth weight in the first year of life.
True
False
Worth 26 points! Help me please! Do 1,2,3 by filling in the blank!!!! And I will make you brainest!
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and no website
Answer:
Glucose is the word!!
In males, the 4 haploid or diploid cells at the end of Meiosis 2 become 4 sperm cells.
What role do dominant and recessive alleles play in determining phenotypes?
Answer:
They determine what everything will look like, by the different combinations of alleles.
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Answer:
It is the Large Vacuole.
Explanation:
I thought it was Lysosome (almost, maybe).
A student examines a thin section of an onion-root tip and records the number of cells that are in each stage of the cell cycle. She observes 93 cells in interphase, 15 cells in prophase, 4 cells in metaphase 6 cells in anaphase and 2 cells in telophase. If the complete cell cycle in an onion-root tip cell requires 24 hours, what is the average duration of each stage in cycle?
Answer:
given:
Total number of cells in all stages = 93+15+4+6+2 = 120
Total time = 24 hours.
solution:
Percentage of cells in interphase
= 93 * 100 / 120 = 77.5%
in prophase
=15 * 100 / 120 = 12.5%
in metaphase
= 4 * 100 / 120 = 3.33%
in Anaphase
= 6 * 100 / 120 = 5%
in telophase
= 2 * 100 / 120 = 1.66%
The percentage of cells present in various phases exhibits the time spend by each cell in that phase.
Total minutes
= 24*60 = 1440
Total minutes spent in interphase
= 77.5 * 1440
= 1116 minutes
in prophase =12.5 *1440
= 180 minutes
in metaphase = 3.33*1440
= 48 minutes
in Anaphase = 5*1440
= 72 minutes
in telophase = 1.66*1440
= 24 minutes
does anyone what this structure is called? and also if you can identify it please
Answer: C: Uterus D: Vagina Egg cells are produced in the ovaries
This process is called Ovulation
Explanation:
That is why we have periods
If fish are eaten by other organisms would the population increase in size, decrease, or stay the same
the process which takes place in guard cells but not in other epidermal cells is?
Answer:
guard cells chloroplasts , involved in the photosynthesis where epidermal cells are living cells covering the outside surface of the herbaceous plants they contain a thick covering of cutting which reduces the water loss from Plants epidermal cells in roots are specialized for water and ion absorption don't know if it helped but good luck
Photosynthesis
The process by which green plants and some other organisms use sunlight to synthesize foods from carbon dioxide and water. The upper and lower epidermal cells do not have chloroplasts, thus photosynthesis does not occur there.
Difference in guard and epidermal Cells:Two guard cells form a stoma, controlling the gas exchange of the plant by regulating the size of the stoma whereas epidermal cells provide a protection to the plant from the external environment.
Photosynthesis does not take place in epidermal cell because:The epidermal cells that make up this skin are transparent. As most epidermal cells lack chloroplasts, they can't perform photosynthesis, or the use of sunlight to convert carbon dioxide and water into glucose and oxygen.
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Using Mendel's work as a guide, which statement would describe the Fy generation when a purebred tall pea plant is crossed with a purebred short pea plant?
The bone cell of a goat contains 60 chromosomes.How many chromosomes will be in each daughter cell after mitosis
The bone cell of a goat contains 60 chromosomes, so there will be 60 chromosomes in each daughter cell after mitosis, as mitosis is the cell division that will produce daughter cells with the same genetic contents.
What exactly is mitotic cell division?The cell divides during mitosis, and the daughter cells formed have the same genetic content as the parents, here, two daughter cells are formed, with the bone cell having genetic content same as original bone cell. Because the duplicated chromosomes are separated equally by the spindle fibers without crossing over or recombination, 60 chromosomes will form that is the same number of chromosomes after mitosis.
Hence, the bone cell of a goat contains 60 chromosomes, so there will be 60 chromosomes in each daughter cell after mitosis, as mitosis is the cell division that will produce daughter cells with the same genetic contents.
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Diffusion is a process which does not
require any energy. Why is this?
A. Because molecules move down an equilibrium slide.
B. Because molecules move down an active transport
tunnel.
C. Because molecules move down a concentration gradient.
Answer:
C. Because molecules move down a concentration gradient
Explanation:
Molecules move from a high concentration to a lower concentration
An elephant has a long, powerful trunk. According to the ideas of Lamarck, how did the trait of long, powerful trunks develop in elephants?
Answer:
Gradually, as generations of elephants continued to selectively use and develop their trunks.
Explanation:
Jean-Baptiste Lamarck was famous French Naturalist. He was a soldier, a biologist and an academic. He gave an early theory of evolution known as the theory of Lamarckism.
It was Lamarck who first believed that elephants earlier had small trunks. But eventual when there was scarcity of food and water, the elephants stretched out its trunk to reached out for food such as trees and also water. And as a result their offspring inherited long and powerful trunk.
In his theory of Lamarckism, he believed that the species passes on its traits to the offspring which they acquired through their use in their lifetime. In this case, the elephants might have used their trunks in such a way that they became long and strong over time and they passed tis trait to their babies.
When pure black hamsters were mated with pure white hamsters, all of the offspring were black. The trait for whiteness would best be described as?
Answer:
Recessive
Explanation:
All of the offsrping were black so that means black was the dominant gene and white was the recessive
At the time when the pure black hamsters were mated so here, the whiteness trait should be called the recessive.
What is recessive?It refers to the allele type that should not be manifested in an individual till both individual copies of the gene should include the particular genotype.
And, all the offspring should be considered as black so here black treated as the dominant gene and white should be considered as the recessive
Hence, the whiteness trait should be called recessive.
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TRUE OR FALSE!!!!
______ 6. Each human chromosome contains a maximumof one gene.
______ 7. The information needed to make a particularcellular protein is contained within a gene.
______ 8. A chromosome is composed of DNA, RNA, protein, phospholipids, carbohydrates, and cell walls.
______ 9. A human gamete contains 46 chromosomes.
Speckled trout and red drum both prey on mullet along the Texas coastline. Dead zones are caused by excessive nutrient pollution, along with other factors that deplete the oxygen from the water. What likely effect would increasing dead zones have on the populations of speckled trout, red drum, and mullet?
a
All three populations would increase.
b
Mullet populations would increase, but trout and drum populations would decrease.
c
Mullet populations would decrease, but trout and drum populations would increase.
d
All three populations would decrease.
Answer:
all three populations would decrease
Explanation:
Most likely effect would increasing dead zones have on the populations of speckled trout, red drum, and mullet, All three populations would decrease. Thus, option "D" is correct.
What is population density?This is a term that has to do with the population of humans that are living in a given geographical area.
Thus, option "D" is correct. All three populations would decrease.
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Which of the following is NOT an example of a negative feedback loop?
A. As a rabbit population grows larger, there is less food per rabbit, and the population size reduces.
B. As you get too hot, you sweat to cool your body temperature back down.
C. As the population of coyote increases, the population of their prey decreases, resulting in a decrease in coyote population.
D. As the population of prairie dogs increases, the ability to spot and warn of predators increases, increasing the growth rate.
Answer:
B. As you get too hot, you sweat to cool your body temperature back down.
Write a 200-word report on your research, using proper grammar, correct spelling, and appropriate punctuation. Make sure you include:
A definition of overgrazing
A discussion on the damage overgrazing can cause
The advantages and disadvantages of each type of grazing
A discussion on the type of grazing you select to use, which includes your justification of why you selected the grazing strategy
Answer:
answer is in explanation before
Explanation:
Overgrazing occurs when plants are exposed to intensive grazing for extended periods of time, or without sufficient recovery periods. It can be caused by either livestock in poorly managed agricultural applications, game reserves, or nature reserves. Overgrazing combined with overstocking has the most damaging outcomes to the world’s natural environment. The scarcity of water resources, water pollution, degeneration of coral reefs, and eutrophication are all connected to overgrazing. The chief polluting elements include farm chemicals and animal wastes.
Types of grazing systems 1. Types of grazing systems Grazing animals (such as cattle, sheep and goats) feed on the leaves and shoots of grass... 2. Zerograzing In this type of grazing system, the animals are not allowed to go out into the pastureto graze.
Overgrazing is defined as the practice of allowing too many livestock to graze on a particular area of land for an extended period. This leads to a decrease in the vegetation cover and the soil's capacity to hold moisture, which results in soil erosion and desertification.
What is overgrazing?There are three types of grazing systems: continuous grazing, rotational grazing, and intensive grazing. Continuous grazing involves leaving livestock on a particular area of land throughout the year. Rotational grazing involves rotating livestock to different areas of land to prevent overgrazing. Intensive grazing involves keeping livestock in smaller paddocks and rotating them frequently.
Hence, overgrazing is defined as the practice of allowing too many livestock to graze on a particular area of land for an extended period. This leads to a decrease in the vegetation cover and the soil's capacity to hold moisture, which results in soil erosion and desertification.
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16.2.2 Why is it important to complete a course of antibiotics?
BIOLOGY QUESTION PLEASE HELP!!
The cell or "plasma" membrane is described as a Fluid Mosaic Model. Can you explain what
this means?
Answer:The fluid mosaic model describes the cell membrane as a tapestry of several types of molecules (phospholipids, cholesterols, and proteins) that are constantly moving. This movement helps the cell membrane maintain its role as a barrier between the inside and outside of the cell environments.
Explanation:
Answer:
The fluid mosaic model describes the cell membrane as a tapestry of several types of molecule
Explanation:
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The population of white pines on his land in 2015 was 40. After last weekend the population is 155. Find the growth rate.
Answer:
287.5%
Explanation:
Initial = 40
Recent = 155
Growth rate = ( recent - initial )÷ initial ×100/1
=( 155-40/40) × 100/1
= 115/40×100/1
= 2.875×100/1
= 287.5%
The rate of growth is 287.5%
What is not a function of the atmosphere?
Answer:
the function of atmosohere is protectibe and sbsorbs
Explanation:
Protective functions of the Atmosphere Absorbs and interacts with harmful electromagnetic radiation and stream of charged particles.
What does "reliably" mean in these sentences?
Answer:
it would be the top right one
Answer:
in a way that can be trusted
Explanation:
hope this helps!
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Taxonomic classification systems for organisms are similar to many other classification
systems. The illustration below compares the National Football League to the currently
recognized taxonomic structure.
?
?
Phylum
?
?
Family
?
Species
Professional Sports Organization
NFL
Conference
Division
Team
Office/Defense
Position
Player
1 According to the diagram, the level labeled Professional Sports Organizations is most
likely which taxonomic classification?
A Class
B Domain
C Kingdom
D Order
Answer:
Domain
Explanation:
“Professional Sports Organization” is listed at the very top, or 2 tiers above Phylum. 2 tiers above Phylum is Domain.
Sunlight allows producers and the animals that depend on them to live in the ______ zone.
A.abyssal
B.neuritic
C.bathyal
D.intertidal
Answer: B. Neuritic zone
There plz help me :(((
Answer:
Your answer would be Horse chestnut
Answer:
hello how are you
Explanation:
I'm fine
Which of the following best describes why the number of organisms increases?
A. The number of births is greater than the number of deaths
B. The number of deaths is greater than the number of births
C. The number of births and deaths are about equal
D. There is not enough information to know