Animals that have their body parts arranged around a central point are A. spherically symmetrical. B. bilaterally symmetrical. C. radially symmetrical. D. asymmetrical.

The source of variation in asexual reproduction is B) mutation of DNA.

Variation is crucial for the survival and evolution of species. In sexual reproduction, variation originates from several mechanisms, including meiosis, crossing over during prophase I, and random assortment of chromosomes during metaphase I. These processes create a diverse set of genetic combinations in offspring, contributing to the population's adaptability. On the other hand, asexual reproduction generally produces genetically identical offspring, known as clones. The primary source of variation in organisms reproducing asexually is mutations. Mutations are spontaneous changes in the DNA sequence and can be beneficial, neutral, or harmful. Though mutation rates are relatively low, over time, they serve as the fundamental source of genetic variation in asexually reproducing populations.

Heterotrophs are organisms that cannot produce their own food, relying on other sources. They can be chemoheterotroph which are heterotrophs that use chemical energy  as energy source or photohetrotroph which are those that uses light. They are secondary and tertiary consumers. Most types of living organisms, including all animals and fungi, are heterotrophic.

Answer:

Both are heterotrophs.

Explanation:

I took the test and got it right. Have a great day

Cats and dogs are considered part of the same group at the Order level, which is Carnivora, with differences emerging at the Family level.

In the hierarchical taxonomic classification system, cats and dogs are considered to be part of the same group starting at the Order level, specifically the Order Carnivora. This group is characterized by organisms that have a diet primarily of meat, though not all members are strict carnivores.

Within the Order Carnivora, cats and dogs are further they are subdivided into the different Families, with cats are belonging to the Family Felidae and dogs to the Family Canidae, highlighting their differences at the more specific taxonomic levels.

Insects and dogs belong to the same kingdom (Animalia) but different phyla. Dogs belong to the phylum Chordata, while insects belong to the phylum Arthropoda.

Insects and dogs share a common ancestor, but they are quite distant relatives.

Kingdom: Both insects and dogs belong to the Kingdom Animalia, meaning they are both animals.

Phylum: This is where they diverge. Insects belong to the Phylum Arthropoda, which includes animals with exoskeletons and jointed legs. Dogs, on the other hand, belong to the Phylum Chordata, which includes animals with backbones.

So, while they both belong to the broad category of animals, they branched off into entirely different paths of evolution a long time ago. This is why they have such different physical characteristics and adaptations.

Answer:

Temperature change

Explanation:

The nurse is caring for a child with epiglottitis. The three major symptoms are drooling, fever, swallowing. Nursing interventions will be

Further Explanation:

The epiglottis is a kind cartilage’s flap at the bottom of the tongue at the backside of the throat. While swallowing, epiglottis stops food from passing inside the windpipe or the trachea. When epiglottis becomes inflamed and swollen this is condition is referred as epiglottitis. This condition makes difficulty in-breath and spread very rapidly. The major reason behind the development of the epiglottitis condition in children is due to bacterial infection which can be easily spread by the upper respiratory tract. Main symptoms of epiglottitis are:

Nursing interventions would be:

Learn more:

Answer Details:

Grade: High school

Subject: Biology

Chapter: Respiratory System

Keywords:

Condition, restless, blue skin coloring, drooling, fever, muffled voice, respiratory tract, child, condition, nurse, bacterial infection, breath, spread.

Homeostasis in plants includes the regulation of carbon dioxide and water levels necessary to perform photosynthesis. Homeostasis in plants also allows plants cells to store the proper amount of water in their cells to help keep them from wilting and dying during times of drought.

Answer: To make food for the plants

Explanation:

The homeostasis the process by which the plants maintain the various types of metabolic activities in their body. The plants maintain homeostasis by making food by the help of the process known as photosynthesis.

This process helps in producing glucose for the plant body which can be used to maintain the various cellular processes inside the plant body.

Hence, photosynthesis is essential for plant body to make food for the plant.

if this is multiple choice you could try shape and movement

The correct answer is Option A , B, C. Scientists use characteristics like shape, method of obtaining energy, and movement to identify specific prokaryotes. Color is not a primary distinguishing feature. These criteria help classify prokaryotes accurately.

Scientists use several characteristics to identify specific prokaryotes:

Color is generally not a primary characteristic used for identifying prokaryotes because different species can exhibit similar colors due to external factors and staining methods.

Complete Question is:

Which characteristics do scientists use to identify specific prokaryotes?  

A. movement  

B. shape  

C. method of obtaining energy  

D. color

DNA condenses into a chromosome during cell division through a series of steps, including unwinding, helicase opening, stabilization by binding proteins, wrapping around histone proteins, coiling into chromatin fibers, and ultimately forming the condensed chromosome with sister chromatids.

Steps of DNA Condensing into a Chromosome

During the process of cell division, DNA condenses into the familiar X-shaped structure known as a chromosome. This process involves several key steps:

DNA unwinds at the origin of replication.

Helicase opens up the DNA to form replication forks, initiating the replication process.

Single-strand binding proteins stabilize the DNA strands to prevent them from reannealing.

After replication, double-stranded DNA wraps around histone proteins to form nucleosomes, appearing as "beads on a string."

The nucleosomes coil into a 30-nm chromatin fiber, further compacting the DNA.

During mitosis, the chromatin fibers condense even more, resulting in the fully formed X-shaped chromosome structure, which consists of two identical sister chromatids held together at the centromere.

It's important to note that chromosomes only take on this highly condensed form during cell division. In the interphase of the cell cycle, the DNA decondenses, allowing for gene expression and DNA replication.

Answer:

Option C is the correct answer  the bacteria cells to maintain homeostasis

Answer:

True

Explanation:

Answer:

Flagellate

Explanation:

Answer:

C.The ashes that result are toxic.

Explanation:

Answer:

Radioactive decay is the process in which the nucleus of an unstable isotope spontaneously changes, releasing particles and energy. An unstable isotope will continue to decay until it reaches the stable form of either a different isotope of the same element that is stable or a different element that is stable.

Explanation:

Its on Edge 2020

Answer: prey predator

The interaction the prairie dogs have with rattlesnake is prey predator interaction.

In a Food chain the prairie dog is primary consumer that feeds on the producers or plants and rattle snakes are secondary consumers that feed on prairie dogs. Hence the prairie dog is prey and rattlesnake is predator which preys on prairie dog.

Answer:

Bone tissue consists of some metabolically active cells which are responsible for bone remodeling which include the formation of new bone cells and degradation of old bone cells.

The most important cells in bone remodeling are osteoclast and osteoblast cells. Osteoblast cells play important role in the formation of new bone cells by releasing an osteoid matrix that contains proteins and minerals.

Osteoclast cells have opposite role than osteoblast cell because they release the calcium and minerals from old cell in the blood and cause bone mineralization.

Therefore for the first approach, we need to study the osteoblast cell because it helps to build the bone and for the second approach we need to study the osteoclast cell that would likely respond to drug 2 as it is responsible for the breakdown of bones.

Final answer:

A nerve impulse is the movement of an action potential along the axon of a neuron, which occurs due to changes in electrical charge facilitated by sodium and potassium ions across the cell membrane.

Explanation:

A nerve impulse describes the movement of an action potential along the cell membrane of a neuron. When a neuron receives a chemical stimulus, it triggers a change in the permeability of the neuron's cell membrane to sodium (Na+) and potassium (K+) ions. This change in permeability starts an action potential at one location. The action potential then travels down the neuron, passing along the cell membrane to the axon terminal. This process involves a rapid change in electrical potential across the membrane, where sodium ions flow into the cell, causing the inside to become positively charged relative to the outside. Subsequently, potassium ions flow out, and the charge is reversed again. The nerve impulse moves as a wave of electrical charge along the outside and inside of the membrane.

The correct answer is c. the movement of an action potential along the axon. Option a is incorrect as it denotes the crossing of the synaptic cleft, which occurs after the nerve impulse has traveled down the axon. Option b refers to the input at the dendrites, which is the receiving end of a nerve impulse and not the impulse itself. Lastly, option d describes an action potential along nerves, which are bundles of axons, and though it involves an action potential, it does not precisely define a single impulse along the axon membrane.