What would happen to the propagation of a neural impulse if the membrane potential (voltage) at the synaptic terminal did not cross the threshold to open voltage-gated calcium channels

Answer:

The following organism that does not produce spores is the evergreens.

Answer:

A

Explanation:

Answer:

78 chromosomes

Explanation:

Since the number of chromosomes in a dog are diploid, we have 2n chromosomes where n = number of chromosome pairs.

Since n = 39.

The number of chromosomes is 2n = 2 × 39 = 78 chromosomes

So, a dog has 78 chromosomes.

Answer:

Its location.

Explanation:

The main difference between pyrogenesis and setting garbage on fire in a landfill is that pyrogenesis process occurs on the surface whereas garbage on fire in a landfill occurs inside the soil at certain depth. Pyrogenesis is an extreme thermal process that converts organic matter into gas made up of hydrogen and oxygen whereas garbage on fire in a landfill decomposes garbage that breaks down materials in simpler substances.

Answer: 4. Retroviruses

Explanation: Retroviruses are among the most widely used viral vectors in gene therapy. They produce faithful transmission of the transgene into the transduced cell progeny by integrating their complementary DNA into the host genome during their life cycle

Answer:

C

Explanation:

Process of elimination

A= Evolution

B= Should have nothing to do with plants

C= Makes sense

D= Variation

Please give me 'Brainliest'

actually it should be a formation of bubbles that identifies a chemical reaction.

Answer:

it's B

Explanation:

We can conclude that method of testing substances is a sure way to identify a chemical reaction formation of bubbles.

Answer:

So, heating a magnet disrupts the domain walls and it becomes easy for the magnetic domains, which are ordinarily lined up, to rotate and become misaligned. They are now less aligned and point in the opposite direction to their neighbors, causing a decrease in the magnetic field and loss of magnetism.

Answer: The statement is TRUE.

Explanation:

The thin, yellowish milk which may appear at any time from late pregnancy to few days right after birth is known as Colostrum milk.

During pregnancy, progesterone and oestrogen cause the milk glands to develop in the mother's breast. Immediately after birth, the anterior lobe of the pituitary releases a hormone, prolactin, which stimulates milk production. When the baby suckles at the mother's nipples, the milk flows out.

This first yellowish milk known as colostrum, contains all the essential nutrients that a newly born baby needs. It also provides antibodies and immune cells that protect the infant from disease. The milk is rich in protein and fats than normal milk. It is the first immune system defense they receive after birth. Therefore the above statement about the first thin yellowish milk is TRUE.

Answer:

Crossing-over between homologous chromosomes (prophase 1), the random lining of homologous chromosomes (metaphase 1), and random fertilization are the mechanisms involved in genetic variation.

Explanation:

Crossing-over between homologous chromosomes (prophase 1), the random lining of homologous chromosomes (metaphase 1), and random fertilization are the mechanisms involved in genetic variation.

The Crossing-over events occur between two homologous chromosomes in the equatorial plane and make the daughter cells genetically different from the original one. The Chiasma is the position where two homologous chromatids interchange genetic information, giving a place for new genetic material or information to be provided to descendants. After crossing over, homologous chromosomes get separated again.  

On the equatorial plane, homologous paired together, randomly aline with their kinetochores facing opposite poles. The random arrangement of tetrads is different in every cell going through the meiosis process. There is no equal alinement between two cells. When tetrads aline in the equatorial plane, there is no predetermined order for each of the homologous chromosomes of each tetrad to face one of the poles and then migrate to it while separating.  Chromosomes of the homologous pair arrange to face any of the poles to migrate forward to it. Each of the chromosomes has two possibilities for orientation at the plane. When the new haploid cells are formed, the number of variations in each cell is also different and depends on the chromosomes that form that cell. The order in the equatorial plane is what introduces variation into the gametes, being almost impossible for two gametes to have the same genetic charge.  

Independent assortment occurs when the alleles from two or more different genes distribute in gametes independently from each other. In other words, a gamete receives an allele from a gene that does not depend on nor influence the allele of another gene in the same gamete. This can only be applied to independent genes. An organism gets only one of the members of the chromatids pair of each parent.  

Answer:

C.

Explanation:

Homeostasis refers to the tendency for the human body to attempt to maintain a certain state even during changes in environment, activity, intake, etc. Options A, B, and D all refer to instances where the body departs from its usual state. While the scenario in Option C does describe a change in environment, it also describes the reaction of the body that brings its internal systems back to a certain state of fluid level.

The main diffrence between their tissue is

1.Plant structure is different from the animal skeletal structure. A plant tissue is different from those in animals. Plant tissues are basically divided into two: Meristematic tissue and Permanent tissue.

Meristematic tissue: These tissues comprise of cells which have the dividing capacity. They are immature and help plants to divide continuously throughout the life. Depending on the site of location, it is of three types. Apical, lateral and intercalary meristems. These meristems enlarge the cell and increase the length and width of the stem, roots and leaves.

Permanent tissue: Permanent tissues are derivative of meristematic tissue. They don’t have the dividing capability but aid in other functions like conduction of substances, storage of food etc. Two types of permanent tissues are found in plants i.e. simple and complex permanent tissue. Simple permanent tissues include parenchyma, collenchyma and sclerenchyma while complex tissues are xylem and phloem.

Animal body is made of four different types of tissues.

Epithelial Tissue

Muscle Tissue

Connective Tissue

Nerve Tissue

Epithelial Tissue: All organs in the body are lined with a group of tissues called epithelial tissues. They cover the surface of all internal as well as external organs. There are four types of epithelial tissues: Squamous epithelium, Stratified epithelium, Cuboidal epithelium and Columnar epithelium. They may be cuboidal, columnar or even flat. The main functions of these tissues involve protection, secretion, absorption, sensation etc..

Muscle Tissue: This type of tissue forms three types of muscles, namely skeletal (striated or voluntary) muscle, smooth (unstriated or involuntary) muscle and cardiac (heart) muscle. They help in movement by contraction and relaxation of muscles.

Connective Tissue: As the name suggests, they connect the different tissues, organs and parts of the body. Different types of connective tissues are Areolar tissue, Adipose tissue (fat), Blood, Lymph, Bone and Cartilage. They connect and support organs and also transport substances between organs.

Nervous Tissue: These tissues are made up of specialised cells called nerve cells (neurons). They conduct and transmit electrochemical impulses between neurons.

Answer:

nuts

Explanation:

not dairy. that's the only thing i can think. hope it helps.

Answer:

I HATE CHEESE BUT I ALSO HATE CURD

UwU But it is nuts

(Now! imma play Beat Sabor on my Oculus)

(I got the BTS pack)

Explanation:

[tex]\sf\purple{C.\:Multiple \:organisms\: may\: be\: affected \:by \:the \:loss \:of \:a \:plant\: species.✅}[/tex]

[tex]\circ \: \: { \underline{ \boxed{ \sf{ \color{green}{Happy\:learning.}}}}}∘[/tex]

Answer:

glucose

Explanation:

Answer:

Oxygen and Glucose

Explanation:

Oxygen and glucose are both reactants in the process of cellular respiration. The main product of cellular respiration is ATP; waste products include carbon dioxide and water.

Answer:

the wind belts would usaully shift counter clockwise in the norther hemishphere.

Explanation:

this is because the earth rotates making the coriolis effect

rush rust maybe 360 degress but also 120 degress bc thats close to half of the 360 s maybe

Answer:

You may become dehydrated because your kidneys will not hold onto enough water.

Explanation:

Answer:

If thick-shelled snails have thick-shelled offspring and thin-shelled snails have thin-shelled offspring then this is good evidence that shell thickness is heritable.

Explanation:

Inheritance is a natural mechanism by which genetic information contained in the DNA sequence is passed from parents to offspring. Moreover, heritability is a measure of the genetic influence on the variation in a particular phenotypic trait (e.g., height, eye color, etc.) between individuals in a population. The values of heritability for a particular phenotypic trait range from zero (when all variation in a population comes from environmental factors and therefore is not heritable) to one (when all variation in a population comes from genetic factors and therefore is heritable). For example, in this case, if parental snails always have offspring with the same phenotype for the trait ‘shell thickness’, it would indicate that the heritability for this trait is equal to one, thereby evidencing that all of the variability for the trait 'shell thickness' comes from genetic differences.

Answer:

Due to unfavourable environmental conditions.

Explanation:

The panda populations in the wild are still threatened because of unfavourable environmental conditions to the survival of panda. The panda become endangered species due to unfavourable and bad environment of the surrounding which occurs because of the human activities. Destruction of habitat is the main reason which is responsible for the decrease occur in the population of panda so we can say that the surrounding unfavourable environment still threatened the panda in the wild.

Answer:

Nitrogen and the Oxygen cycle :)

Explanation:

Answer:

Yes

Explanation:

If there is no variation, then they won't be change in species. Meaning that the species won't change traits.

Answer:

The East coast is warmer because it is affected by the warm gulf stream current, while the West Coast cities are cooler because they are affects by the cool California Current.

Answer:

double-stranded RNA (dsRNA) homologous to the gene of interest

Explanation:

RNA interference (RNAi) is a naturally occurring mechanism used by eukaryotic cells to suppress gene expression through regulatory non-coding RNAs (e.g., small interfering RNAs, siRNAs) that are complementary to the target gene of interest. These non-coding RNAs can bind to target messenger RNAs (mRNAs) in the cytoplasm in order to trigger mRNA degradation and/or block translation. The RNAi mechanism is widely used in molecular biology laboratories in order to inhibit the expression of target genes and thus understand gene function. The RNAi mechanism can be induced by transfecting into cells long double-stranded RNA (dsRNA) molecules that are complementary to the target mRNA sequence to be degraded. RNAi is initiated by the enzyme Dicer that cleaves dsRNAs into siRNAs (19 to 25 nucleotides), which are then incorporated into an RNA-induced silencing complex (RISC) in order to suppress gene expression at the post-transcriptional level (i.e., the mRNA is degraded after transcription).

In order to use RNA interference (RNAi) to reduce the expression of a gene in an organism, you should inject a double-stranded RNA (dsRNA) hom-ologous to the gene into the organism.

Gene expression can be defined as the transcription of a gene into a messenger ribonucleic acid (mRNA), followed by its subsequent translation into proteins. Thus, gene expression is typically controlled on two (2) main levels and these are:

RNA interference (RNAi) is also referred to as post-transcriptional gene silencing (PTGS) and it can be defined as a biological process in which the expression of a gene in an organism with respect to in which RNA molecules are sequentially reduced (suppressed) by double-stranded RNA (dsRNA), through transcriptional or translational repression.

This ultimately implies that, you should inject a double-stranded RNA (dsRNA) hom-ologous to the gene into the organism, if you wish to use RNA interference (RNAi) to reduce the expression of a gene in an organism.

Read more: https://brainly.com/question/17973556

Answer:

joe

Explanation:

Answer:

The central dogma of molecular biology suggests that the primary role of RNA is to convert the information stored in DNA into proteins.

hope this helps

have a good day :)

Explanation:

Answer:

The primary functions of RNA are as follows:

Facilitate the translation of DNA into proteins

Functions as an adapter molecule in protein synthesis

Serves as a messenger between the DNA and the ribosomes.

They are the carrier of genetic information in all living cells

Promotes the ribosomes to choose the right amino acid which is required in building up of new proteins in the body.

Explanation:

According to the Big Bang theory, if you reverse the galaxy motion and go back in time A. Everything would become condensed into one dense point.

The Big Bang Theory simply explains how the universe was formed from a large explosion. According to the Big Bang theory, the universe was formed as a result of the explosion of particles.

The reverse of the Big Bang Theory simply means the scenario where the expansion of the universe reverses. This is also called the Big Crunch. This will lead to the recollapse of the universe.

In this case, the cosmic scale also reaches zero. Then, everything would become condensed into one dense point.

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