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Electrons can be either passed on to the electron transport chain by NADH⁺ at the first complex (NADH⁺-coenzyme Q oxidoreductase) or at the second complex(FADH⁺-coenzyme Q oxidoreductase). I think that's what you're referring to.

Answer:

1)200

Explanation:

The Sargasso Sea is constantly considered a lifeless environment, due to its high salinity and temperature, which are considered inhospitable for most species. However, the Sargasso Sea is rich in local species, accounting for more than 200 of them, composed of algae, crustaceans, fish, microorganisms, among others.

Answer:

True

Explanation:

When threatened, ostriches run away, but they can cause serious injury and death with kicks from their powerful legs. Contrary to popular belief, ostriches do not bury their heads in sand to avoid danger. This defensive behavior of lying low, so that they may appear from a distance to have their head buried.

Answer:

Adaptive or acquired immunity is that we acquire throughout our lives through vaccines (active), breast milk (passive) or injection of specific artificial or natural antibodies to a certain pathogen (passive).

The two great arms of this immunity are the humoral and the cellular.

The humoral refers to the cytokines and immunomodulatory molecules that are responsible for transmitting fundamental messages between defense cells in order to coordinate the destruction of the pathogen between them.

Instead, cellular immunity speaks about cell lineage such as b, t, tcd4 lymphocytes, natural killers, plasmacytes, etc.

It can be said that the humoral factor is the one that coordinates the pathways and the relationships between the cells of the acquired immunity, both are important because the two need each other for adaptive immunity to work.

Explanation:

Examples of the humoral factor: pro and anti inflammatory cytokines, interleukins, complement chain, antibodies, TNF alpha, beta, etc.

Examples of cellular factor: plasmacyst, b lymphocyte, t lymphocyte, NT lymphocyte

Answer:

animalia

Explanation:

Answer:

True

Explanation:

The attached image shows a table that displays the eight (8) planets, their respective average distance from the sun and their respective orbital speeds.

The question only relates the orbital speed of planets Uranus and Venus, which is 7km/s and 35km/s respectively.

40% of the orbital speed of planet Venus is:

= 40/100 × 35

= 0.4 × 35

= 14

According to the table in the image, Uranus orbits around the sun at a speed of 7km/s, which is lesser than 40% of Venus's orbital speed (14km/s).

Therefore, it is TRUE that Uranus orbits the sun at less than 40% of the orbital speed of Venus.

Answer:

True

Explanation:

I tested it on IXL

Answer:

They use different detecting methods to assess neuronal circuits

Explanation:

Chemogenetics is a technique widely used in neuroscience research to explore signaling interactions by means of genetically modified receptors capable of interacting with small molecules. Chemogenetics was first used to determine the function of the chalcone isomerase gene by inducing mutations that altered its substrate specificity. On the other hand, optogenetics is a bioluminescence-driven genetic technique used to control genetically modified neurons that express light-gated ion channel genes. This technique is also used to monitor neuronal networks. In consequence, optogenetic and chemogenetic techniques have recently been combined in order to analyze neuronal circuits, it by analyzing the same actuator molecule.

Answer:

The amount of lipids stored as an energy reserve far exceeds the energy stored as glycogen since the human body is simply not capable of storing as much glycogen compared to lipids. Lipids yield 9 kcal of energy per gram while carbohydrates and proteins yield only 4 kcal of energy per gram.

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Question 79 1 pts Both a breathing guinea pig and burning charcoal give off the same amount of heat energy when the same amount of Oz is used up. Which of the following statements is most closely related to this observation? In ordinary changes energy may be transferred from one form to another, but it is not destroyed. In ordinary changes matter is neither created nor destroyed. As a product of a reaction accumulates, its abundance automatically cuts down the formation of the product. The smaller the mammal, the higher its metabolic rate. D Question 80 1 pts During respiration the amount of Oz consumed can be calculated from the amount of CO2 produced.

Explanation:

PlZzzzz follow me

The statement which is most closely related to this observation is that In ordinary changes energy may be transferred from one form to another, but it is not destroyed.

This states that energy can neither be created nor destroyed but can be converted from one form to another.

This explains why a breathing guinea pig and burning charcoal give off the same amount of heat energy when the same amount of oxygen is used up.

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Answer:

1) Purines contain only four ring nitrogen atoms while Pyrimidines contain only two nitrogen ring atoms

2) Purines contain two heterocyclic rings while Pyrimidines contain one heterocyclic ring

Explanation:

Purines and Pyrimidines are two classes of nitrogenous bases that make up nucleic acids. They are both heterocyclic aromatic compounds which contains nitrogen atoms in their structure. Although, they are similar but have distinct features namely:

Purines are ring molecules which consists of four (4) nitrogen atoms in their aromatic structure. They are structures with two heterocyclic rings consisting of five (5) carbon and four (4) nitrogen atoms. Adenine and Guanine are the purines in nature.

On the other hand, Pyrimidines are another ring molecules consisting of two (2) nitrogen atoms in their aromatic structure. Their only ring i.e. 1, is also heterocyclic in nature and contains four (4) carbon and two (2) nitrogen atoms. Cytosine, Thymine and Uracil are the pyrimidines.

Answer:

Aluminum cans are one of the most recyclable materials, as they are 100% recyclable and can be reprocessed over and over again2. Turning recycled aluminum cans into new cans uses 95% less energy than making new ones.

Answer:

Aluminum cans are one of the most recyclable materials, as they are 100% recyclable and can be reprocessed over and over again

Explanation:

Answer:

The correct option is E: Limulus - Book Lungs

Explanation:

The structure of a book lung is made so as to maximize the efficiency of gaseous exchange in arachnids. An externally located structure, book gills, aids in this process. Limulus are horseshoe crabs that still makes use of book gills. Its a marine creature (an arthopod, to be specific) that has 5 pairs of book gills on its body.

Answer:

o negative

Explanation:

Answer:

As somatic cells are diploid (2n) 2n=56

gametes receive only haploid set so, n=28

The number of chromosomes carried by the gametes produced by elephants would be :  28

Given that The elephants posses 56 chromosomes in its somatic cells and somatic cells are known as diploid cells ( i.e. 2n ) while the gametes will only carry a haploid set of chromosome ( i.e. n ).

Determining the number of chromosomes contained in the gametes

 since ; 2n ( chromosomes of a somatic cell ) = 56

∴ n ( chromosomes contained in a gamete ) = 56 / 2 = 28

Hence we can conclude that The number of chromosomes carried by the gametes produced by elephants would be :  28.

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Answer:

d

Explanation:

Blood usually contain, white blood cells, red blood cells, and platelets.

Hope this helps:)

Answer: A, a clear fluid that carries proteins, water, white blood cells, fat, dead cells, and toxins that drain from the fluid between the cells of the body

Explanation:

edge 2021

Answer:

match the following from definition

first chloro peak bearing organism lekin truls rate root all leaves have frock so thin second a brown pigment of the algae or one of the container

chlorophyll-bearing organisms lacking true stems, roots, or  leaves - Algae

a brown pigment of the algae  - fucoxanthin

any one of certain large, tough, brown seaweeds; the source of potassium, iodine, algin, and sodium carbonate - kelp

a red pigment found in red algae and in a few cyanobacteria - phycoerythrin

Answer:

Explanation:

Well the question was a little unclear, but for disaccharides:

(alpha) Glucose + (alpha) Glucose = Maltose

(alpha) Glucose + Fructose = Sucrose

(alpha) Glucose + Galactose = Lactose

Answer:

Vernix Caseosa

Explanation:

it's a waxy white substance that covers the babies skin.

Answer:

The skin is covered by VERNIX CASEOSA.

Explanation:

A waxy cheese like white substance.

This is produced by dedicated cells and have some protective roles during fetal development.

Answer:

The third option

Explanation:

geosphere- the volcano

Hydrosphere- the rain

Biosphere- the plants

The spheres of the Earth that interacts in this scenario are geosphere, hydrosphere and biosphere.

The Earth is categorized into spheres as follows:

According to this question, a volcano erupts, and particles of rock and ash were released into the atmosphere. After this, water droplets form around the rock and ash particles and fall to Earth as rain. The rainwater helps plants grow.

This suggests that spheres of the Earth that interacts in this scenario are geosphere (rock), hydrosphere (water) and biosphere (plants).

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Answer:

All of the cells found in the blood come from bone marrow. They begin their life as stem cells, and they mature into three main types of cells— RBCs, WBCs, and platelets.

Answer and Explanation:

Crossing over occurs during meiosis. When homologous chromosomes are aligned and they stick together by the chiasma point.  At this point, the homologous chromosomes chains break and get recombined with the broken portion of its homologous. The result is that one of the progenitor´s chromosome will have a portion of the other progenitor´s chromosome, and vice-versa.  

If crossing-over does not occur, the independent assortment of the homologous chromosomes in a cell will produce two different genotypes that equals the ones of the progenitors. So, there will be two genotypes, one of them equals the female´s genotype and the other is like the male´s genotype.

Answer:

b. Phosphofructokinase;  Fructose-1,6-bisphosphatase

Explanation:

Glucagon is a hormone which functions to initiate gluconeogenesis whwreas insulin functions to initiate glycolysis.

Fructose-2,6-bisphosphate (F26BP) is an allosteric regulator of the glycolytic and gluconeogenic enzymes phosphofructokinase-1 (PFK-1) and fructose-1,6-bisphosphatase (FBPase-1).

It stimulates glycolysis and inhibits gluconeogenesis by binding to its allosteric site on phosphofructokinase-1 reducing its affinity for the allosteric inhibitors ATP and citrate .

It is formed by phosphorylation of fructose-6-phosphate catalyzed by  phosphofructokinase-2 and is broken down by fructose-2,6-bisphosphatase which are two separate enzymatic activities of a single, bifunctional protein (PFK-2/FBPase-2).

Phosphorylation of PFK-2/FBPase-2 due to glucagon release enhances its FBPase-2 activity thereby stimulating gluconeogenesis and inhibiting glycolysis.

Dephosphsorylation of PFK-2/FBPase-2 due to insulin release enhances its PFK-2 activity, thereby stimulating glycolysis and inhibiting gluconeogenesis.

Answer:

oxygen molecules

Explanation:

The arrows in the photo itself gives you the hint as you know in the picture they showed an arrow in which the tree is releasing something and we know that trees release oxygen gas which will be afterwards absorbed by the amimals and human beings.

Hope this helps and pls mark as brainliest :)

Answer:

changing environment can cause certain traits to be favored through selection.This can lead to changes in variation.

Answer:

Autosomal dominant and recessive: Autosomal dominant states a pattern of inheritance in which an individual carries one normal gene and one copy of a mutant gene while autosomal recessive states a pattern of inheritance in which an individual have two copies of the mutant gene.

Incomplete dominance:  Incomplete dominance states a heterozygous condition in which both the alleles present are partially expressed and produces intermediate phenotype.

Codominance: In codominance and individuals receive alleles, if both the alleles are different including dominant and recessive, dominant allele will be expressed while recessive will be masked.

Multiple alleles: organisms with multiple alleles exist with two copies of every gene present in a population with variation in genes.

Sex linked gene: In humans and some other organisms, sex linked genes are influenced by genes on the X chromosome. for example: If a gene is present on the X chromosome only and not the Y chromosome.

Answer:

Gypsy moth is a pest which destroy trees.

Explanation:

Gypsy moths are harming human residents and industries because gypsy moth is a pest which destroy trees which are present in human residents. These trees are responsible to clean the environment if these trees are destroyed, the health of the people are adversely affected. It also destroy many important crops such as cotton crop so the destruction of cotton crop leads to the destruction of textile industry. Its caterpillar also produces toxin which affect human skin when they comes in contact.

Answer:

The rise of the gypsy moth population will eventually kill many trees, as they won’t be able to perform photosynthesis. This event will negatively affect the lumber and construction industries, as well as the beauty of public and private landscapes.

Explanation:

Answer on edmentum.

Answer:

i think that it's false.

Explanation:

Natural law is a theory in ethics and philosophy that says that human beings possess intrinsic values that govern our reasoning and behaviour. Natural law maintains that these rules of right and wrong are inherent in people and are not created by society or court judges.

The Interests Theory Approach. Advocates of the interests theory approach argue that the principal function of human rights is to protect and promote certain essential human interests. Securing human beings' essential interests is the principal ground upon which human rights may be morally justified.