What is global warming/climate change and why is it dangerous?

Answer:

B

Explanation:

the plant can change its form

i. The mRNA transcript of the given DNA sequence is:

AUG UAC UAG UAA AGU GCC UUA AAG AUC GUA CAU

The top strand is the coding strand (also called the sense strand), and the bottom strand is the template strand (also called the antisense strand).

ii. The sequence of amino acids produced if the translation of the gene occurs is:

Met-Tyr-Stop

Answer:

Explanation:

i. The mRNA transcript sequence is:

AUG UAC UAG UAA AGU GCC UUA AAG AUC GUA CAU

The top strand (TAC ATG ATC ATT TCA CGG AAT TTC TAG CAT GTA) is the template strand or antisense strand, and the bottom strand (ATG TAC TAG TAA AGT GCC TTA AAG ATC GTA CAT) is the coding strand or sense strand.

ii. The sequence codes for the polypeptide Met-Tyr-Stop, assuming that the start codon is AUG and the stop codons are UAG, UAA, and UGA.

Answer: a) exoskeleton

Explanation:

Well, many invertebrates – and all arthropods – have a protective external casing called an exoskeleton. This literally means ‘outside skeleton’ and its role is to cover the animal’s soft tissues and also provide a rigid structure to which the creature’s muscles can attach.

When Timmy steps on the rose bush, the sensory receptor on his toe receives the stimuli, sends it the spinal cord through a sensory neuron which they initiates a response sent through a motor neuron to the muscle and he withdraws his leg in pain.

A reflex arc refers to the neuronal pathway which controls a reflex action.

A reflex action is an action which occurs involuntarily.

Examples of reflex actions include thhe following:

Reflex actions do not need to involve the brain, hence they occur very quickly.

The path of a reflex arc begins with a sensory receptor which receives the stimuli, travels to the spinal cord  through a sensory neuron which they initiates a response that is sent through a motor neuron to an effector such effector such as a skeletal muscle.

In conclusion, a reflex arc is the path of a reflex action through the body.

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Answer:

photosynthesis by ocean plants

Explanation:

A potential realistic mutation that could greatly benefit the human race is an increased resistance to infectious diseases.

One potential realistic mutation that could greatly benefit the human race is an increased resistance to infectious diseases. Such a mutation could occur through various mechanisms, including natural selection, genetic engineering, or epigenetic modifications.

This mutation would be beneficial because it would improve the health and well-being of individuals, reduce healthcare costs, and potentially prevent pandemics and global health crises. For example, a mutation that enhances the activity of immune cells or increases the expression of antimicrobial peptides could help individuals fight off infections more effectively and reduce the likelihood of spreading infectious diseases to others.

However, it is important to note that there could be potential negative consequences associated with this mutation. For instance, increased resistance to infectious diseases could lead to a reduction in the diversity of the human microbiome, which could have implications for overall health and immune function.

Additionally, it is possible that infectious agents could evolve in response to this mutation, potentially leading to the emergence of new and more virulent strains of pathogens. Therefore, it is important to consider the potential risks and benefits of any mutation carefully and to approach genetic engineering with caution.

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To become a molecular biologist, it's important to focus on building a strong foundation in science, particularly in subjects related to biology and chemistry. Here are some recommended subjects to consider for grades 10-12:

Biology: This subject is fundamental to understanding the principles of life, including cellular structure and function, genetics, molecular biology, and biochemistry. It forms the basis for further specialization in molecular biology.

Chemistry: A solid understanding of chemistry is crucial for molecular biology. Topics such as organic chemistry, inorganic chemistry, and biochemistry will provide a strong background for understanding the chemical processes that occur at the molecular level.

Mathematics: Strong mathematical skills are essential in many areas of science, including molecular biology. Focus on subjects like algebra, geometry, and calculus to develop problem-solving and analytical abilities.

Physics: While not directly related to molecular biology, physics provides a foundation for understanding principles of energy, forces, and motion. It can be beneficial for understanding certain aspects of molecular biology, such as biophysics or physical chemistry.

English/Language Arts: Communication skills are important for any career, including molecular biology. Developing strong reading, writing, and presentation skills will help you effectively convey scientific information and research findings.

Additionally, if your school offers advanced placement (AP) or International Baccalaureate (IB) courses in biology or chemistry, taking these can provide a more rigorous and in-depth understanding of the subject matter.

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The internal anatomy for Turbellaria:

for the left diagram;

for the right;

Turbellaria is a class of flatworms that belongs to the phylum Platyhelminthes. They are free-living, bilaterally symmetrical, and can be found in both freshwater and marine environments. Some species are parasitic, but most are scavengers or predators. Turbellaria are simple, flattened animals with a streamlined body shape and a well-developed nervous system.

They have a simple digestive system and a direct life cycle, meaning they do not have a larval stage. Turbellaria play an important role in many ecosystems and are used as models for studying various biological processes, such as development and regeneration.

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Answer: A. Temperate deciduous forest

Explanation:

Many trees with thick bark to protect against the cold winter in their environment live in temperate deciduous forests. These forests are characterized by trees that lose their leaves in the fall and regrow them in the spring, and they are found in regions with distinct seasons, including cold winters. The thick bark helps protect the trees from freezing temperatures, as well as from damage caused by ice, snow, and other harsh winter conditions. Other environments, such as boreal forests and alpine forests, also have trees with thick bark to protect against the cold.

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Answer:

D

Explanation:

The digestive, respiratory and circulatory systems are controlled  by the: d. autonomic nervous system

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Answer:

b

Explanation:

sıkı olm nhjvvhjjfgghhhhhhhhh

Answer:

C. Evaporation and transpiration

Explanation:

Answer:

The size of the sides is up to you – the thinner the sides are the less space the ants will have. It all depends on the species, but roughly between 1,5 and 3 centimetres (0,6-1,2 inches) is recommended. To make sure the formicarium will keep together we need something to fixate it with.

Answer:

Genotypes are listed in the right column of the table, while phenotypes are on the left.

There are more genotypes than phenotypes for blood types because multiple genotypes that can result in 1 phenotype

Answer: HALF

Explanation:

CONTEXT CLUES AND I TOOK IT BEFORE

The balance used to measure the mass of the rock reads it in three different lines. The first one is related to the first digits, meeaning that the first one will be 3. As it is in a hundred scale, we add the second line, which shows the number 50. At the end, the third line will be added too, showing us the number 4,6. To fully measure, we add the three values, as follows: 300 + 50 + 4,6 = 354,6. Therefore, the correct answer is d) 354,6g.

Answer:

Dioecious and monoecious plants actually have something in common, in that they both bear unisexual flowers. This means that each bloom has only male or female reproductive parts. With dioecious plants, the male and female blossoms appear on separate plants. With monoecious plants, each plant has both male and female flowers.

Explanation:

Answer:

With dioecious plants, the male and female blossoms appear on separate plants. With monoecious plants, each plant has both male and female flowers. By contrast, some plants have blooms that are bisexual. Each individual bloom has both male and female parts.

Answer:

B

Explanation:

just cause it is i think

Answer:

The answer is B

Explanation:

Use the process of elimination, It is fairly obvious it's not C yeah? so mark C off. D talks about thermal energy which is completely and utterly wrong. Your now left with A and B. There is no electrical energy in plants so B is your answer

Populations in Hardy-Weinberg equilibrium express the same allelic and genotypic frequencies through generations. Number of individuals expressing each phenotype: 63 sheep S^AS^A, 84 sheep S^AS^B, 28 sheep S^BS^B.

The Hardy-Weinberg equilibrium theory states that allelic and genotypic frequencies in populations that is in equilibrium remain the same through generations. No evolutive forces are acting on these populations, so no evolution occurs.

Assuming a diallelic gene,

Allelic frequencies

Genotypic frequencies

The addition of the allelic frequencies equals 1

p + q = 1.

The sum of genotypic frequencies equals 1

p² + 2pq + q² = 1

In the exposed example,

Alleles          Frequencies

Genotypes

We need to get the number of animals expressing each genotype and phenotype. To do it, we just need to use allelic frequencies and calculate  genotypic frequencies (p², 2pq, and q²), and then multiply these values by the total number of animals (N = 175).

Genotypic and Phenotypic frequencies

F(S^AS^A) = p² = 0.6² = 0.36

F(S^AS^B) = 2pq = 2 x 0.6 x 0.4 = 0.48

F(S^BS^B) = q² = 0.4² = 0.16

Number of individuals expressing each phenotype

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Complete question

A single gene with two alleles control variation in haemoglobin type in sheep. There are three different phenotypes corresponding to genotypes

In a flock of 175 sheep the frequency of allele S^A was found to be 0.6 and frequency of allele S^B WAS found to be 0.4.

Using the hardy weinberg equation calculate the number of sheep with each phenotypes in the flock show your working

Answer:

independent” variable goes on the x-axis (the bottom, horizontal one) and the “dependent” variable goes on the y-axis (the left side, vertical one).

Explanation:

White and sweet-smelling flowers with abundant nectar are probably pollinated by a bees and butterflies.

nectar is a sweet, viscous liquid produced by glands called nectaries found in plant blooms, stems, and leaves. Glucose, sucrose, and fructose are the major sugars found in nectar, which also include traces of proteins, salts, acids, and essential oils. A Nectar Mattress should provide good pressure relief for sleepers of average weight who have hip, shoulder, and back pain. Professional reviews claim that the comfort layers of the mattress' memory foam and polyfoam cradle the body to lessen pressure on the body's pressure points.

White and sweet-smelling flowers with abundant nectar are probably pollinated bya. bees and butterfliesb. fliesc. birdsd. wind?

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Answer:

your answer is d

Explanation:

i took the test

Answer:B,C

Explanation: covalent and ionic bonds hold molecules together. It is the polarity of covalent bonds that give rise to hydrogen bonding. As in the water example: the more electronegative O attracts electrons slightly more than the hydrogens, so the O has a fractional negative charge, the Hs a slight positive charge. The O of one molecule and the H of another are held together by this charge difference.

B.) They are the strongest bonds that form between molecules.

C.) The attraction between the hydrogen atom on one water molecule and the oxygen atom on  another water molecule is an example,

Hydrogen bonds exists between molecules in which hydrogen is bonded to a high electronegative atom such as nitrogen, chlorine, fluorine, sulphur etc.

Hydrogen bonds are strong intermolecular interactions. They are responsible for the high boiling and melting points of some polar substances such as water.

However, hydrogen bonds are not as strong as covalent or ionic bonds.

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According to the information, we can infer that the Independent variable: Temperature (specifically, the range of temperature). On the other hand, Dependent variable: Distribution of pikas. Additionally, Control: Pikas within their tolerance range of temperature and Constants: Other environmental factors, habitat conditions, and population of pikas.

In this experiment, the independent variable is the temperature, specifically the range of temperature. The researcher will manipulate and observe how different temperature ranges affect the distribution of pikas.

The dependent variable is the distribution of pikas. It refers to the geographical or spatial range in which pikas are found. The researcher will measure and analyze how the distribution of pikas changes in response to different temperature ranges.

To ensure test validity, a control group of pikas within their tolerance range of temperature needs to be included. This group will experience temperatures within the range they can tolerate, providing a baseline for comparison. By comparing the distribution of pikas in different temperature ranges to the control group, the researcher can determine the impact of temperature on their distribution.

To maintain validity, other environmental factors such as altitude, precipitation, vegetation, and habitat conditions should be kept constant across the experimental groups. Additionally, the population of pikas being studied should be consistent, without any significant changes in population size or genetic composition throughout the experiment. These constants help isolate the effect of temperature on pika distribution and minimize confounding variables.

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Answer:

Nematode parasites can cause significant damage to crops and reduce yield, so it is important for farmers to take effective control measures. Here are some recommendations that farmers can consider:

1. Crop rotation: Farmers can rotate their crops with non-host plants to break the nematode life cycle. This helps to reduce the population of nematodes and prevent them from building up in the soil.

2. Soil solarization: This involves covering the soil with a clear plastic sheet during the hot summer months to increase the temperature of the soil and kill nematodes.

3. Biocontrol agents: Certain predatory microorganisms and beneficial nematodes can be effective in controlling plant parasitic nematodes. These biocontrol agents can be applied to the soil to help suppress nematode populations.

4. Nematicides: Chemical nematicides can be used to kill nematodes, but they should be used judiciously as they can have negative environmental impacts and may harm other organisms in the soil.

5. Sanitation: Farmers should practice good sanitation practices such as removing infected plant debris and cleaning tools and equipment to prevent the spread of nematodes.

6. Resistant varieties: Planting resistant crop varieties can help reduce the damage caused by nematodes.

7. Soil improvement: Maintaining soil health through practices such as adding organic matter can improve soil structure, fertility, and water-holding capacity, making it less hospitable to nematodes.

By implementing these control measures, farmers can effectively manage nematode infestations and protect their crops from damage.

Answer:

Explanation:

ome effective control measures against nematode parasites, such as crop rotation, use of resistant crop varieties, biological control methods, soil solarization, and chemical control using nematicides. Here are some links for further reading:

Brainliest pls

Answer:

B- reduction in biodiversity

Answer:

the digestive system

Explanation: