Which of the following describes a response to external stimuli

A. a person yawns when oxygen levels in the blood are low

B. a child becomes hyperactive due to a chemical imbalance

C. a boy sneezes when exposed to cat dander

D. A girl eats food when she is hungry

Answer:

A

Explanation:

Answer: Option A. The separation of allele during meiosis.

Explanation:

Law of segregation states that each individual has two allele which segregate during meiosis and in result each gamete has one allele.

Answer:

heat and pressure

Explanation:

Choosing between Biology, Medicine or Engineering depends on personal interests and career goals. Medicine is suitable for those interested in healthcare and helping others. Biology offers diverse careers in research, pharmaceuticals, and environment. Engineering, particularly Bioengineering, combines engineering and biology to solve medical problems.

The question of choosing between Biology, Medicine, or Engineering depends on your interests and career aspirations. If you are fascinated by how the human body works, and you're interested in helping people improve their health, a career in Medicine might be the right path for you. On the other hand, Biology can lead to a variety of careers including research, pharmaceuticals, and environmental conservation, among others.

If you're more inclined towards designing and creating innovative solutions, a career in Engineering could be a match. Specifically, Bioengineering is a field that combines the principles of engineering and biology to solve medical and health-related problems. This involves working with physicians and healthcare specialists to design and develop devices and systems that can diagnose diseases or manage patient health. Examples of this work include the development of prosthetic limbs and health management systems.

Ultimately, deciding between these fields requires a thorough understanding of what each entails and introspection into your interests and career goals. It may be beneficial to seek advice from academic advisors or professionals in the fields to make an informed decision.

https://brainly.com/question/30040900

#SPJ12

Explanation:

estrogen in concentrations that would produce sperm in a

female

a high progesterone level in a male a low insulin level in either a male or a

Final answer:

The pituitary gland initiates puberty and releases LH and FSH, which stimulate the ovaries and testes to produce sex hormones, regulating gamete production. This leads to the production of a zygote when a sperm fertilizes an egg.

Explanation:

The gland that initiates puberty and releases hormones is the pituitary gland. During puberty, the pituitary gland secretes hormones like luteinizing hormone (LH) and follicle-stimulating hormone (FSH), which stimulate the ovaries and testes. In response, the ovaries produce hormones such as estrogen and progesterone, and the testes produce testosterone. These hormones regulate the production of gametes, which are sperm in males and eggs (oocytes) in females. Egg production is a complex process that begins before birth and is arrested during meiosis until puberty, at which point it continues with each menstrual cycle, leading to the release of one egg during ovulation.

Male and female reproductive systems work together to produce a zygote, the initial cell formed when a sperm cell from the male merges with an egg cell from the female. Key processes include the formation of sperm and eggs, their transportation to enable fertilization, and the subsequent implantation and development of the zygote into a new individual.

Answer:

clean, separate and cook

Explanation:

clean your hands before, during and after preparing foods  

Wash surfaces and utensils after each use

Wash fruits and vegetables, but not meat, poultry, or eggs

separate vegetables and meat by using different cutting boards, do not cross contaminate

cook meat at the right temperature

Answer: 3 safety measures are :

1.  Wash your hands

2. Wash worktop

3. Wash chopping board and knifes properly

Explanation:

Food poisoning is a common problem. Food poisoning is basically an illness caused from food.

Raw meat or any other raw animal food are one of the main source of food poisoning. So, one should cook such food properly before eating and avoid eating spoiled one.

Food poisoning can also be caused from vegetable,specially from sprouts.

Cleanliness is expected at the time time of cooking to avoid any chance of food poisoning. The first step in this direction is cleaning hands properly before cooking. It is also required to clean properly all materails required in cooking like chopping board and knives.

Answer:

It has incomparable advantages over other gene editing tools.

Explanation:

For example, the CRISPR-Cas9 system has more target sites than ZFNs and TALENs, and Cas9 has many variants that can be used in a variety of studies. Moreover, the system is extremely easy to use and can be executed in almost any laboratory.

The most important advantages of CRISPR/Cas9 over other genome editing technologies is its simplicity and efficiency. Since it can be applied directly in embryo, CRISPR/Cas9 reduces the time required to modify target genes compared to gene targeting technologies based on the use of embryonic stem (ES) cells.

Disadvantages of CRISPR technology: CRISPR-Cas9 off-target; The effect of off-target can alter the function of a gene and may result in genomic instability, hindering it prospective and application in clinical procedure.

this the best i got, hope it helps :)

Answer:

One of the major pros of crispr-cas9 is that it could potentially wipe-out many genetic diseases and could even be used to develop a successful cancer therapy.

The main con would be the ethics. In the future an individual could select their own desired traits for their offspring. The wealthy would have a larger advantage which could increase the social gap.

Answer:

Taxonomy organizes organisms into a hierarchical classification system from largest to smallest grouping as follows:

Domain: The broadest category, grouping organisms based on cellular structure and molecular criteria. There are three domains:

Archaea

Bacteria

Eukarya (includes plants, animals, fungi, and protists)

Kingdom: Subdivisions within each domain based on cellular and structural characteristics. For example, within the domain Eukarya, kingdoms include:

Animalia (animals)

Plantae (plants)

Fungi (fungi)

Protista (protists)

Phylum: Each kingdom is divided into phyla based on anatomical and developmental characteristics. For example, within the kingdom Animalia, phyla include:

Chordata (vertebrates)

Arthropoda (arthropods)

Mollusca (mollusks)

Class: Phyla are further divided into classes based on more specific shared characteristics. For example, within the phylum Chordata, classes include:

Mammalia (mammals)

Reptilia (reptiles)

Aves (birds)

Order: Classes are divided into orders, representing a more specific grouping based on common characteristics. For example, within the class Mammalia, orders include:

Carnivora (carnivores)

Rodentia (rodents)

Primates (primates)

Family: Orders are further divided into families, representing closely related groups of organisms. For example, within the order Carnivora, families include:

Felidae (cats)

Canidae (dogs)

Ursidae (bears)

Genus: Families are divided into genera (singular: genus), which are groups of closely related species sharing common ancestors. For example, within the family Felidae, genera include:

Panthera (lions, tigers, leopards)

Felis (domestic cats)

Acinonyx (cheetahs)

Species: The smallest and most specific grouping, species are individuals that can interbreed and produce fertile offspring. Species are identified by their unique scientific name, which includes both the genus and species names. For example:

Panthera leo (lion)

Felis catus (domestic cat)

Canis lupus (gray wolf)

Explanation:

Answer:

A disadvantage of artificial selection is that it reduces the variation in a certain species.

The following is a disadvantage of artificial selection - Reduces the variation in a certain species

Artificial selection is the identification by humans of desirable traits in plants and animals, and the steps taken to enhance and increase the yield.

Thus, The following is a disadvantage of artificial selection - Reduces the variation in a certain species

Learn more:

https://brainly.com/question/14128683

Answer: A) Black trait is dominant

B) The genotypes of the parents must be Bb

Explanation: Let B represent the allele for black colour and b represent the allele for white colour. If the offspring between 2 black mice show the ratio of 3 black mice to 1 white mouse, it then means that the two parents are heterozygous for black colour, that is each of them have one allele for black colour (B) and one allele for white colour (b). They both have a genotype of Bb.

Bb x Bb = BB, Bb, Bb, and bb.

This means 1BB : 2Bb : 1bb

BB is black, Bb is black while bb is white which gives a ratio of 3 black mice to one white mouse. For Bb to manifest as black, it means that B is dominant to b.

Food chain is the answer.

Answer:

lol i would say foodchain because i just did the test

Explanation:

Answer:

d. decreased supply of energy

Answer:

A) crust

Explanation:

Answer:  lithosphere

Explanation:

The upper mantle and crust together form a rigid layer of rock called the Lithosphere, which is 0-100 km thick. The Lithosphere has broken into plates that float on the Asthenosphere. The Asthenosphere is 100-700 km deep.

brainliest plz

Answer:92.471 million mi

Explanation:The Sun is at an average distance of about 93,000,000 miles (150 million kilometers) away from Earth. It is so far away that light from the Sun, traveling at a speed of 186,000 miles (300,000 kilometers) per second, takes about 8 minutes to reach us.

Answer:

Process of sexual reproduction in angiosperms: There are two processes which are involved during sexual reproduction i. e. Pollination and fertilization. In pollination, the pollen of stamen falls on the stigma of carpel where they make a tube towards ovary where ovule is present. When the pollen reaches the ovary and fuses with ovule, it produces zygote which turns into seed, this process is called fertilization.

Angiosperms are the flowering plants that produces offspring by the process of se-xual reproduction.

The form of reproduction in which genetic material is required from both the parents is known as se-xual reproduction. The parent plants possess female and male se-x cells known as gametes. The male and female gamete combine to give rise to offspring by the process of fertilization.

The se-xual reproduction in angiosperms or the flowering plants takes place by the process of pollination. The flowers comprise female se-x organs known as pistils and the male se-x organs known as stamens. The part of the stamen, which comprise pollen is known as anther. The pollen is required to move to the part of the pistil known as stigma.

Plants can either cross-pollinate or self-pollinate. Pollinators refers to the animals or the agents that carry the pollens to the stigma in the plants. After pollination, the next step is fertilization. After reaching the pistil, the pollen requires to fertilize and egg within the stigma, this egg is known as ovule. The process of fertilization give rise to the fruits that comprise seeds.

Thus, in the angiosperms, the process of se-xual reproduction in order to produce the offspring.

Find out more information about reproduction in angiosperms here:

https://brainly.com/question/1134861

Answer:

c) turn into a liquid

Explanation:

wax when heated, it melts and becomes liquid and then solidifies again

Living things are primarily composed of carbon, hydrogen, oxygen, and nitrogen. These elements are essential components that form the basis of biological molecules and living matter.

Living things are mostly made of carbon, hydrogen, oxygen, and nitrogen (CHON). These elements form the fundamental components of living matter such as nucleic acids, proteins, carbohydrates, and lipids. Understanding these important building blocks is crucial for biologists to comprehend the structures and functions of living organisms.

Answer:

D

Explanation:

Granite is typically a light gray color with around 70% silica content

Answer:

D. Light-colored rock with high silica content

Explanation:

Answer:

classification of dinosaurs

B. The chromosomes are duplicated.

Interphase is like the "daily living" of the cell. This is the stage the cell undertakes during preparation for meiosis. This is the resting phase.

Answer:

Option B - The chromosomes are duplicated

Answer:

B memory cells are a B cell sub-type that are formed within germinal centers following primary infection.

B cells are important in immune responses against intra-cellular bacterial and viral infections.

Explanation:

B memory cells are formed from B lymphocytes. They are generated in germinal centers.

B cells remain relatively stable for at least 50 years in our body.

B cells have long lifespan, other features also include high sensitivity to low antigen doses, proliferation is fast and strong. B memory cells differentiates fastly into plasma cells. High affinity antibodies are produced from these plasma cells during its secondary response.

Answer: Metamorphic Rocks

Explanation:

Adding heat and pressure to a rock turns it into a metamorphic rock

Answer:

Magma

Explanation:

Answer:

The answers are,

1. muscles

3. neurons

5. glands

Explanation: I did the question

The three options that receive information from the axon terminals of the neuron are:

The axon terminals of a neuron are the specialized structures where the neuron sends out electrical and chemical signals to other cells. In the case of a neuron communicating with another neuron, the electrical and chemical signals are sent to the dendrites of the other neuron.

This process is called synaptic transmission. In the case of a neuron communicating with muscle fibers, the electrical and chemical signals are sent to the muscle fibers in order to cause movement. And in the case of a neuron communicating with gland cells, the electrical and chemical signals are sent to the gland cells in order to cause the gland to secrete certain hormones.

Learn more about axon, here:

https://brainly.com/question/28234182

#SPJ2

Answer:

Store it as starch

Explanation:

When a plant produces too much sugar during photosynthesis, it is transported through the phloem and is stored as starch in the roots. It can then be turned back into sugar when the plant needs it.

A plant with excess sugar will store it in the form of starch or glycogen in its tissues which can be used for energy later. The sugars are transported from where they are produced (sources like leaves) to where they are needed (sinks like roots and fruits) across the plant.

When a plant produces excess sugar, it has mechanisms in place to utilize this surplus. The sugar serves as a vital source of energy, critical not only for immediate physiological processes but also for the plant's growth and maintenance. In conditions of high light and temperature, such as in C4 plants like maize and sugarcane, the production of sugar can be significantly higher when compared to C3 plants.

These sugars generated via photosynthesis in the leaves, which act as sugar sources, are allocated across the plant body to areas known as sugar sinks. Sinks are parts of the plant such as roots, stems, and developing fruits and seeds that need external sugar supply to meet their energy requirements. When reserves are abundant, excess sugars can be stored in the form of compounds like starch or glycogen, which provide a reservoir of energy that the plant can draw upon in times of scarcity or during the night when photosynthesis is not possible.

Answer:

To an evolutionary taxonomist, recent common ancestors determine whether 2 species are in the same genus. Derived character. A trait that arose in the most recent common ancestor of a particular lineage and was passed along to its descendants. An example of a derived character is the loss of a tail, a trait that first appeared in an ancestor of apes and man.

A derived character is a trait present in an organism but not in its ancestral form. It is a novel feature that evolved, distinguishing it from other organisms. They are important in constructing evolutionary trees, mapping out relationships among organisms.

A derived character is a trait or characteristic that is present in an organism or species, but was not present in its ancestral form. It is a novel feature that evolved in an organism or lineage and thus distinguishes it from other organisms or lineages. An example of a derived character could be the opposable thumbs in humans that were not present in our early primate ancestors.

These characteristics are crucial in the study of evolutionary biology, as they help in constructing evolutionary trees, also known as phylogenetic trees. These trees map out the evolutionary history and relationships among different organisms, and a derived character is often used as a key piece of evidence in these diagrams.

https://brainly.com/question/32030451

#SPJ6

Answer:D

Explanation:

I did the test

Answer:

theyd most likely be able to adapt to the environment they are in and there would be natural selection involved

Explanation: