What is an ecosystem?

Answer:

The main difference between these two types of neurons is the speed of conduction of impulse. ... Majority of the neurons in the central and peripheral nervous system are myelinated since they require fast conduction speeds. A neuron with unmyelinated axon has a comparatively lower speed of conduction of the nerve signals.

Explanation:

Answer:

a. Her mother has zig-zag antennae.

b. Her brother has zig-zag antennae.

Explanation:

Available data:

Maternal effect: Refers to the influence of the “environment provided by the mother” on the progeny phenotype. The mother´s genotype directly determines the progeny phenotype. Even though the progeny has a different genotype, it is irrelevant, as well as the father´s genotype or phenotype. This means that no matter what is the genotype of the offspring, all of them will express the same phenotype as their mother. The maternal effect is commonly seen in insects and might be seen in some mammals and plants.

So, if a female has zig-zag coils, this means that the mother also has zig-zag antennae and that all the brothers and sisters of this female ant have zig-zag antennae, independently of their genotype.

a. Her mother has zig-zag antennae ⇒ True. The trait is inherited from the mother.  

b. Her brother has zig-zag antennae ⇒ True. The whole progeny will express sig-zag antennae.

c. This female carries the zig-zag allele ⇒ Not necessarily.

d. This female's offspring will have zig-zag antennae ⇒ Depends on it´s genotype

Answer:

The cell membrane consists of a double layer of lipid molecules covered by two layers of proteins. The lipid molecules are parallel to each other and perpendicular to the membrane.

Answer:

The cardiac muscle is made up of branched muscle cells, which have 1 or 2 nuclei and which the contact area between the heart fibers gives rise to specialized regions at the level of the plasma membrane called intercalary discs. The intercalary discs unite the cardiac muscle cells with each other, which provides greater adhesion to the tissue and intervenes in the rapid communication between cells. This allows its simultaneous contraction and the production of the beat.

Explanation:

The intercalary discs are the union systems that associate the cardiac muscle cells to form the myocardial fibers, the cardiac muscle is the muscle tissue of mixed components, which is located exclusively in the walls of the heart. For this reason, it has the function of generating the necessary contractions for the blood to reach all parts of the body.The intercalary discs are a special type of intercellular junction, a gap that guarantees electrical communication between these cells; and on the other hand, it provides places of adhesion and anchorage of one cell with another. The intercalary discs provide the structural foundation that allows the heart to behave as a functional syncytium.

Answer:

At the end of mitosis, the two daughter cells will be exact copies of the original cell. Each daughter cell will have 30 chromosomes.

Answer:  

32% population would be heterozygous for this gene.

Explanation:

Due to technical problems, you will find the complete explanation in the attached files

Answer:

yes

Explanation:

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C. Growth hormone promotes the closure of the epiphyseal plate.

The closure of the epiphyseal plate is NOT an effect of growth hormone (option c).

The epiphyseal plate is a layer of hyaline cartilage between the epiphyses and metaphyses at the ends of long bones.

The epiphyseal plate is completely closed when bone growth is completed (around age 18 to 21 years).

Different hormones (i.e., testosterone and estrogen) released at puberty initiate the closure of epiphyseal plates.

In conclusion, the closure of the epiphyseal plate is NOT an effect of growth hormone (option c).

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Answer:

She is at risk for future obesity

Explanation:

The correct conclusion could be drawn is she is at risk for future obesity. BMI is a body mass index that is derived from the mass and height of the person.

The formula is BMI = kg/m2

Where kg is a person’s weight in kilograms and m² their height in meters squared.

Thus, it is concluded that Ariella is at a risk for future obesity according to her BMI percentile.

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Answer:

c oooooooooooookkkkkkkkkkk

Answer:

it would reason that the first sentence is the most evidentiary, since it is fact based verses the second sentence which is theory.

Answer: The mountains are continuously increasing in size. and Periodic earthquakes occur in the region.

Explanation: i literally got my question wrong because i listened to that other guy and he was completely wrong. dont make my mistake and listen to silly people.

neurotransmitters are often reffered to as the body's chemical messangers. They are the molecules used by the nervus system to transmit messages between neurones, or from neurones to muscles. Communication between two neurones happens in the synaptic cleft (the small gap between the synapses of neurones).

Answer:

33 percent is wright

hope it may help you

Answer:

 length of earthworm in picture will be 45 mm. Hope this helps you.

Answer:

you can see below

Explanation:

Basic Definitions:

Cell Membrane = the semi-permeable structure that surrounds the cell and keeps all of the cells organelles from exploding everywhere.

Cell Wall = the rigid 'armor' of the cell that surrounds it after the membrane. Usually made up of cellulose and ONLY found in plant cells.

Nucleus = A really dense organelle of the cell usually surrounded by two membranes. They contain and protect your genetic material. Basically everything that makes you, you.

Cytoplasm = The watery, salty, and protein filled 'soup' that fills the cell. All organelles float happily in this.

Now Specific Locations:

Eukaryotic cells

have plasma membranes

please mark me brainliest or mark me thanks at leat

only have cell walls if the cells are plants.

They do have a nucleus.

They have cytoplasm

Prokaryotic cells

have plasma membranes

cell walls are usually chemically complexed.

don't have a nucleus

have cytoplasm

Animal cells

only have the plasma membranes.

No cell wall

have a nucleus

have cytoplasm

Plant cells

have both the cell wall

and have a plasma membrane

have a nucleus

have cytoplasm

Answer:

cells are the basic building blocks of all organisms , whether living or dead.

atoms are the basic building blocks of matter(non-living things) . every item , for eg, chair, book, toothbrush are made of atoms?

Answer:

Bone marrow is a source of adult stem cell

Answer:

Triacylglycerols

Explanation:

Triacylglycerols are the main form of lipid found in the body and in the diet. Fatty acids and glycerol are the building blocks of triacylglycerols. Glycerol is a thick, smooth, syrupy compound that is often used in the food industry.

Answer:

Evidence of fossil apes and hominids in both East and West of the great rift valley

Explanation:

The East Side Story hypothesis opined that a tectonic plate movement created a seismic split in the earth, thus deepened the rift valley and created a geographical barrier between the east and the west of the great rift valley. The barrier created a kind of geographical isolation between the ancestors of hominids, dividing them into two with each population taking different evolutionary paths.

Thereafter, the ancestors in the western side of the rift valley evolved into the chimpanzee's family while those in the eastern side ultimately evolved into humans.

Thus, providing the fossils of apes and that of hominids in both East and West sides of the great rift valley will render the hypothesis invalid.

Answer:

a because it harm the people

Answer:

The underlying principle of SEC is that particles of different sizes elute (filter) through a stationary phase at different rates. This results in the separation of a solution of particles based on size.

hope it helped

Size exclusion chromatography (SEC) separates molecules based on their size by filtration through a gel.

Size exclusion chromatography (SEC) splits molecules based on their size by filtration via a gel. The gel consists of spherical beads including pores of specific size distribution. Separation happens when molecules of various sizes exist included or excluded from the pores within the matrix.

Size exclusion chromatography exists named gel filtration chromatography because the gel effectively allows for the filtering of molecules from a sample based on molecular size. However, unlike other methods, the larger molecules elute first.

Size-exclusion chromatography (SEC), also understood as molecular sieve chromatography, exists a chromatographic procedure in which molecules in solution exist separated by their size, and in some cases molecular weight. It exists usually applied to large molecules or macro molecular complexes such as proteins and industrial polymers.

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Answer:

The correct answer is - A. prokaryotic.

Explanation:

Monera is the kingdom that has not complete cell organization as eukaryotic cells and shows similar cell organization like prokaryotic cells with no clear nuclear membrane and a unicellular body.

The true bacteria and cyanobacteria are the member of this group. The nature of the organisms is either autotrophic or heterotrophic. Thus, the correct answer is - prokaryotic.

The organisms in Kingdom Monera do not have complete cell. They are called

B. prokaryotic

Answer:

El agua es un medio ideal para reacciones químicas, ya que puede almacenar una gran cantidad de calor, es eléctricamente neutral y tiene un pH de 7.0, lo que significa es que no es ácida ni básica. Además, el agua participa en muchas reacciones enzimáticas como agente para romper enlaces o, al eliminar de una molécula, para formar enlaces.

Explanation:

Answer:

0.104M

Explanation:

The following equation is given in this question:

mava=mbvb

Where;

ma = molarity of acid (M)

mb = molarity of base (M)

va = volume of acid (ml)

vb = volume of base (ml)

According to this inputted values;

max5.0ml=5.2mlx0.10m

ma = unknown molarity of acid

mb = 0.10M

va = 5.0ml

vb = 5.2ml

Hence, ma x 5.0ml = 5.2ml x 0.10m

5ma = 0.52

ma = 0.52 ÷ 5

ma = 0.104M

Answer:

c. Both (a) and (b)

Explanation:

Diagnosis of bacterial disease can be made by finding bacteria in pathological fluids and by isolation of bacteria by culture from exudates or blood.

Answer:

Zygote

Explanation:

Answer:

D seems to be best answer if that was my test

Explanation:

makes the most sense

Answer:

D

Explanation:

Answer:

There have been many issues that have been seen to arise due to the over use of pesticide including:

Explanation:

Overuse has been linked to cancer, Alzheimer's Disease, ADHD, and even birth defects. Along with being reporting to have the potential to harm the nervous system, the reproductive system, and the endocrine system.

Answer:

Pollution.

People applying them are exposed to toxic chemicals. People who live nearby can be exposed too with wind blowing them around.

With rain or just watering of plants, the pesticides 'run off' and end up in water supplies, rivers, lakes, and eventually oceans.

Also, organisms can mutate and make pesticides useless.