The prominent examples of marine ecosystems include the
a
Deep ocean
b Intertidal zone
c Photic zone of the ocean
d All of the above
Ck12
Answer:
I think the awnser is D. Hope it helps
How are sex cells different from other human cells?
Sex cells have half as many chromosomes
Sex cells have double chromosomes
Sex cells are larger.
Sex cells have no chromosomes.
Answer:
They have diffrent oxeans, which makes color trasnfers, differnt
Explanation:
Answer:
Students will explore the structure and function of cells - the building blocks of life. Using a simple factory analogy, they will discover how the major parts of a cell work together to make a product. Each student will build a 3-D cell model to help visualize the abstract world of the microscopic cell.
Students will:
discover that in nature “form fits function”;
understand that there is order to a living thing, and that cells give rise to tissues, tissues to organs, and organs to organ systems;
identify organelles and other cellular structures by their scientific names;
learn how organelles and other structures work together in a cell; and
build a macroscopic model of an animal cell.Examine the five kingdoms of life through a microscope! Slides of animal, plant, fungi, protist, and bacteria cells are magnified up to 400x in a compound microscope as part of an exploration of biodiversity and classification.
Students will:
view cells from all five kingdoms magnified through a compound microscope;
record microscope observations;
compare and contrast cell types; and
learn how to prepare a wet mount slide with cheek cells and use a compound microscope.Understanding the structure of DNA helps to explain its function. In this lab, students are introduced to the composition of DNA building blocks called nucleotides. They will discover how the subunits of the nucleotides - nitrogenous bases, phosphate groups and deoxyribose sugars - fit together to form the double helix. The lab concludes with the construction of 3-D models that show the famous structure.
Students will:
discuss the role of DNA in living things;
explore the structure and function of the DNA molecule;
learn about the base pairs of DNA and the importance of sequence; and
construct a model of DNA.Gregor Mendel is known as the “Father of Genetics.” His proposed principles of heredity—based on his own observations of heredity in garden plants—formed the basis of our understanding of classical genetics. In this lab, kernel color in corn is used to illustrate some of Mendel’s laws of inheritance.
Students will:
collect data from corn crosses to show patterns of heredity;
use Punnett squares to predict possible outcomes from genetic crosses; and
learn how Mendel’s laws can be applied today.
Explanation:
What animals have been dominant in the Cenozoic era
Explanation:
Cave lions, sabre-toothed cats, cave bears, giant deer, woolly rhinoceroses, and woolly mammoths were prevailing species of the Quaternary period. Without the dinosaurs, plant life had an opportunity to flourish during the Cenozoic era.
The Quaternary period was dominated by cave lions, saber-toothed cats, cave bears, giant deer, woolly rhinoceroses, and woolly mammoths. Plant life had a chance to thrive during the Cenozoic era without the dinosaurs.
What are the characteristics of Cenozoic era?From the Cenozoic period nearly 66 million years ago to the present day, life is considered recent.
Plants and animals look the one most like they do today during this time period.
The Cenozoic Era is divided into even smaller periods known as Epochs, so there will be even more guideposts in this Era.
Because of the extinction of many groups of giant mammals during the Cenozoic era, smaller species were able to thrive and diversify because their predators no longer existed.
Thus, big cats, saber-toothed cats, cave bears, giant deer, woolly rhinoceroses, and woolly mammoths monopolized the Quaternary period.
Plant life had a chance to thrive without the dinosaurs during the Cenozoic era.
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In order for a trait to be considered a competitive advantage, the trait must(1 point)
allow the individual to utilize fewer food and water resources to survive.
allow the individual to have fewer diseases and not get sick.
allow the individual to be stronger and outcompete others.
allow the individual to survive better and reproduce more in that environment.
Why are hooves more advantageous for horses in the modern era?(1 point)
Hooves are better equipped for environments with plains.
Hooves are better suited with environments with wetter climates.
Hooves are better suited for environments with a wider range of vegetation.
Hooves are better suited for environments with plenty of trees.
Imagine a major volcanic eruption has dramatically changed the environment on an island such that the average temperature and available sunlight are much lower. Of the following species present on that island, which species is most likely to adapt and evolve to this change instead of going extinct?(1 point)
a large mammal species with a low reproduction rate and specific food needs.
a bird species with specific nesting requirements that only feeds on one type of seed.
a reptile species with a high reproduction rate and very similar individuals.
an insect species with a high reproduction rates and a significant mutation rate
Of the four factors that affect the evolution of species, which factor is driven by random events?(1 point)
Speciation
Competitive advantage
Genetic variation
Differential survival and reproduction
Which factor will most likely guarantee evolution rather than extinction?(1 point)
larger animal sizes
changes in available food sources
changes in the environment
higher reproduction rates
Answer:
Did you ever get the answers?
Explanation:
Any trait that is to be considered as a competitive advantage, trait must allow the individual to survive better and reproduce more in that environment.
What is evolution?
Evolution is the change in the characteristics of a species over several generations and relies on the process of natural selection. It is decent with modification from preexisting species.
The trait that has the ability of relative fitness which means relative survival and relative reproduction shall be considered as more competitive. Both of these, criteria possess a competitive advantage.
Hooves are more advantageous for horses in the modern era because hooves are better suited for environments with a wider range of vegetation. Hooves help horses run farther and faster on the open prairies, helping them flee from predators and find fresh grass for grazing.
The species which is most likely to adapt and evolve to this change is an insect species with high reproduction rates and a significant mutation rate. This is because insect belongs to r-selected species that have fewer chances of extinction as compared to k-selection species.
The factor which is driven by random events is Genetic variations.
The factor which is most likely guarantee evolution rather than extinction is higher reproduction rates. Because a higher reproduction rate is a characteristic of r-selected species.
Therefore, the option which is correct for each specific question is briefly described.
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5'-AUGGGUAACGGCGUG-3' is an mRNA sequence.
After translation, how many amino acids would this sequence contain in the protein?
Answer:
5 Amino acids
Explanation:
because each amino acid is made up of a codon (triplet base pairs code for one amino acid)
Question 18 of 25
When describing image formation for flat, shiny surfaces, what is an
important rule to remember about light rays?
Answer:
Some important rules of light are:
the incident ray,normal ray and the reflected ray lie in the same point.angle of incidence is equal to angle of reflection..The Angle When It Leaves Is Larger Than The Angle When It Hits. The Angle Is Smaller In The Medium That Has The Higher Index Of Refraction.
hope it is helpful to you
What converts sound waves to electrical impulses in the nervous system?
Oval window
Pinna
Cochlea
Tympanic membrane
Where are the organs associated with balance located?
The brain
The heart
The ear
The stomach
What type of muscle typically forms a lining for various organs?
Rough muscle
Smooth muscle
Cardiac muscle
Skeletal muscle
What are the body's two systems of internal communication?
Digestive and Endocrine systems
Nervous and Respiratory system
Respiratory and Endocrine systems
Endocrine and Nervous systems
Answer:
2.the inner ear 3. the smooth muscle and the skeleton muscle.
What causes mutation in gene?
Answer: . A mutation is a change in a DNA sequence. Mutations can result from DNA copying mistakes made during cell division, exposure to ionizing radiation, exposure to chemicals called mutagens, or infection by viruses
Explanation:
The length of a DNA double helix increases by 0.34 nm (nanometres) for every pair of nucleotides. The total number of nucleotides in a human body cell is
[tex]1.2 \times {10}^{10} [/tex]
Calculate the total length of a double helix in a human body cell (answer to be given in meters)
Pls give me a quick answer
Where does wind come from? Why and how is wind stronger than other times? Or why and how is wind lighter ( not as strong) as other times.
Answer:
Wind is air in motion. It is produced by the uneven heating of the earth's surface by the sun. Since the earth's surface is made of various land and water formations, it absorbs the sun's radiation unevenly. Two factors are necessary to specify wind: speed and direction.
Strong winds are due to a strong pressure gradient force. A pressure gradient is how fast pressure changes over distance. So, when pressure changes rapidly over a small distance, the pressure gradient force is large. Strong winds almost always result from large pressure gradients.
Explanation:
mitosis and meiosis are different types of cell division? Which of the following events occurs Only during the process of meiosis?
Answer:
True; C: chromatid formation
Explanation:
What is visible light? Give an example and explain how the example works.
Why will individuals have brown eyes rather than a blue eyes?
Answer:
because of the parent's genes
Explanation:
Can an intersex person cause a girl to get pregnant?
Explanation:
If an intersex person has a uterus, they may be able to carry a child.
What are the similarities between extinct species endangered species
Which of the following describes the Koppen-Geiger climate Cfa?
humid subtropical
odyssey-ware. plant systems. i hate this class. good luck
Cross a white feathered chicken with a checkered chicken (checkered chicken, checkered chicken!). Show the genotypic and phenotypic ratios.
Answer:
The correct answer would be -
genotype - 50% WB and 50% WW
phenotype - 50% checkered chicken and 50% white-feathered chicken.
Explanation:
In the chickens, the checkered trait occurs due to the codominance type of inheritance as when two different alleles of color Black feather and White feather allele present together they both show their presence and express as checkered chicken.
White feather chicken: WW
Black feather chicken: BB
Checkered chicken: WB
Cross = WW and WB
gametes: W, W and W, B
Punnett square:
W W
W WW WW
B WB WB
Thus, The correct answer would be -
genotype - 50% WB and 50% WW
phenotype - 50% checkered chicken and 50% white-feathered chicken.
Answer:
The correct answer would be -
genotype - 50% WB and 50% WW
phenotype - 50% checkered chicken and 50% white-feathered chicken.
Explanation:
Discuss the relationship of carbon dioxide and oxygen. Explain how it remains Balanced. What has man done to upset this natural relationship?
Answer: Power plants
Explanation: They release the waste from it into the air
Answer:
Explanation: the primary function of the respiratory system is to take in oxygen and eliminate carbon dioxide
Lub dub sounds represents
Answer:
Notes to the teacher: Lub Dub
There are two sounds heard during each heart beat. These are called Lub-Dub noises by doctors. When the valves between the upper chambers (atria) and lower chambers (ventricles) close, a "lub" sound is heard. ... The heart contains valves which direct the flow of blood in one direction.
Explanation:
pls give me brainless
Which of the following is an example of a transgenic organism?
A) millions of copies of DNA that was amplified by PCR b)The human genome
C)Dolly the cloned sheep
D) Zebra fish expressing the Green Fluorescent Protein from jellyfish
E)A person's short tandem repeat profile
Which of the following scenarios will decrease the genetic variation of a population? (1 point)
O a mutation in a chromosome makes it more likely to undergo genetic recombination
O a population of birds suddenly decrease their frequency of sexual reproduction
O an individual works out, increasing their muscle mass
O a mutation alters the sequence of a gene resulting in a new allele
Answer:
(Q1). Which of the following scenarios will decrease the genetic variation of a population?
(answer). a population of birds suddenly decrease their frequency of se×ual reproduction
(Q2). Two of the main drivers of genetic variation are mutations and genetic recombination. During which process can these two events occur?
(answer). meiosis
(Q3). If a fish is able to breathe outside of water but does not reproduce, that trait
(answer). does not impact evolution.
(Q4). In which of the following scenarios would evolution by natural selection take place?
(answer). Penguins reproduce se×ually, producing offspring that look different from one another
(Q5). Which type of environment would tend to reduce genetic variation in a population because of evolution by natural selection?
(answer). an old growth forest with trees that are over 1,500 years old
Explanation:
these are the correct answers for the (Genetic Variation and Evolution Quick Check) 2022
The scenario that will decrease the genetic variation of a population is a population of birds suddenly decreasing their frequency of procreation.
What do you mean by Genetic variation?Genetic variations may be defined as the presence of differences in sequences of genes between individual organisms of a species.
Mutations always lead to an increase in the genetic diversity among individuals. While decreasing the rate of crossbreading may decline the rate of genetic diversity.
Therefore, the scenario that will decrease the genetic variation of a population is a population of birds suddenly decreasing their frequency of gender reproduction. So, the correct option is B.
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what anatomy and physiology
Answer:
Explanation:
Anatomy and physiology are two of the most basic terms and areas of study in the life sciences. Anatomy refers to the internal and external structures of the body and their physical relationships, whereas physiology refers to the study of the functions of those structures.
Can anyone answer this science question? No links please
Which constellation is found at approximately -15° declination and 4 hours 40
minutes right ascension?
Lepus
Canis Major
Eridanus
Taurus
Answer:
Eridanus.
Explanation:
Eridanus is a constellation recorded in antiquity by Ptolemy and is one of the 88 official constellations established by the International Astronomical Union.
It is located south of the zodiac constellations Aries and Taurus, and includes about 126 stars visible to the naked eye from 1st to 6th magnitude. It is considered the longest of the constellations: it starts from the celestial equator and ends at the 60th southern celestial parallel.
Please Help!!
You are viewing a whitefish embryo under the microscope. Even in tissues like the embryo that are constantly growing, most of the cells you would see under the microscope would
- have condensed chromosomes.
- be in mitosis and have condensed chromosomes.
- be in interphase.
- be in meiosis.
- be in mitosis.
Answer:
the last one
Explanation:
Which aquatic biome is heavily influenced by stratification?
1. rivers and streams
2. lakes and ponds
3. the ocean
Answer:
freshwater biomes
In freshwater biomes, stratification, a major abiotic factor, is related to the energy aspects of light. Marine systems are influenced by the physical water movements, such as currents and tides, along with the thermal properties of water.
hope it helps
What would happen if scientists used different physical characteristics
If scientists used different characteristics from the ones used then this will affect the outcome of the study and the observations made through the study will be different from the one obtained.
What are Physical characteristics?Physical characteristic means a bodily condition or the characteristic of any person's body which is from the time of birth, accident, or any disease, or from any kind of natural physical development, or any other type of event outside the control of that individual including individual physical mannerisms, such as height, or weight of an object.
Phenotype includes an individual's observable traits, such as the height, eye color, and blood type of the person. A person's phenotype is determined by both their genomic makeup and environmental factors.
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describe the process of blood clothing
Answer:
Blood clotting normally occurs when there is damage to a blood vessel.
Explanation:
Platelets immediately begin to adhere to the cut edges of the vessel and release chemicals to attract even more platelets. A platelet plug is formed, and the external bleeding stops.
Next, small molecules, called clotting factors, cause strands of blood-borne materials, called fibrin, to stick together and seal the inside of the wound. Eventually, the cut blood vessel heals and the blood clot dissolves after a few days.
Please mark me as brainliest :)
Answer:
I think you mean blood clotting so umm
Explanation:
Blood is made up of many different cells—mostly red blood cells, white blood cells and platelets—as well as clotting factors. These and other elements float through blood vessels in a strawlike liquid called plasma.
The coagulation cascade is a complex chemical process that uses as many as 10 different proteins (called blood clotting factors or coagulation factors) that are found in plasma. Put simply, the clotting process changes blood from a liquid to a solid at the site of an injury. Here’s how the process works:
Injury. A cut on the skin or an internal injury creates a small tear in a blood vessel wall, which causes blood flow.
Vessel constriction. To control blood loss, the blood vessel immediately narrows (called constriction), which limits blood flow through the vessel.
Platelet plug. In response to the injury, tiny cells in the blood called platelets are activated. The platelets stick to one another and to the wound site to form a plug. The protein von Willebrand factor (VWF) helps the platelets stick to each other and to the blood vessel wall.
Fibrin clot. Next, blood clotting factors trigger production of fibrin, which is a strong, strandlike substance that surrounds the platelet plug and forms a fibrin clot, a meshlike net that keeps the plug firm and stable. Over the next several days to weeks, the clot strengthens and then dissolves as the wounded blood vessel wall heals.
Which of these body systems has cells that attach to each other to form a leak-proof barrier?
Select one:
Urinary system.
Reproductive system.
Respiratory system.
Endocrine system.
Answer:
Epithelial cells are tightly packed, and this lets them act as barriers to the movement of fluids and potentially harmful microbes. Often, the cells are joined by specialized junctions that hold them tightly together to reduce leaks.
Explanation:
Question 5
1 Q) Which of the following best describes an ecosystem?
1) A list of all plant and animal species found in the California desert
2) All of the white-tailed deer in a forest
3) Sunlight, temperature, rainfall, water sources in an area
4) An entire rainforest, including all biotic and abiotic factors
2 Q) Which of the following happened after wolves were removed from Yellowstone's ecosystem?
1) Biodiversity dramatically increased
2) The elk overgrazed the habitat vegetation of other species
3) Biodiversity was unaffected
4) The elk population rapidly decreased
3 Q) Which features are used to describe a biome?
1) Climate, wildlife, and vegetation
2) Longitude and latitude
3) Common name, scientific name, and conservation status
4) Bacteria, Archaea, and Eukarya
4 Q) Which statement is correct about biomes?
1) They represent large geographic areas
2) They all have about the same species richness
3) Water biomes are not as complex as land biomes
4) Biomes can be as small as a pond
5 Q) Which of the following is the largest biome on earth by area?
1) Tundra
2) Marine
3) Temperate Grassland
4) Desert
Answer:
1 Q) Which of the following best describes an ecosystem?
4) An entire rainforest, including all biotic and abiotic factors
2 Q) Which of the following happened after wolves were removed from Yellowstone's ecosystem?
2) The elk overgrazed the habitat vegetation of other species
.3 Q) Which features are used to describe a biome?
1) Climate, wildlife, and vegetation4
Q) Which statement is correct about biomes?
1) They represent large geographic areas
5 Q) Which of the following is the largest biome on earth by area?
)3 Temperate Grassland
HELP ASAP
How did the environment affect the populations of peppered moths in the 1800s in
London?
Because of the soot covering everything, the dirtier darker moths will be eaten
less often, allowing them to reproduce and pass their genes on to the next
generation.
Because of the soot covering everything, the lighter colored moths will be eaten
less often, allowing them to reproduce and pass their genes on to the next
generation.
The environment did not affect the peppered moths-- the populations are still
the same.
Answer:
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Explanation: