If the current trend continues, can the temperature be expected to increase/decrease or stay the same in the next twenty years? Anssssswer please only 8 minutes left !!!

Answer: there are only 20 different amino acids but 64 possible codons

Explanation:

Answer:

The correct option is a. "increased cortical mass, increased numbers of neurons, increased synaptic connections, increased neurotransmitter amounts, and increased myelination. "

Explanation:

Rodents that have been raised in enriched environments were found to have thicker cerebral cortex containing approximately 25% more synapses in a study conducted by Mark Richard Rosenzweig. This increase in synapses implies in an increase in neurons and neurotransmitters, which also indicates an increase in myelination.

Answer:

Explanation:

Gene interactions happen between genes at different levels and have implications in the phenotypic expression, causing a wide genetic variability.

Epistasis means "interruption" and refers to interactions between genes located in different loci in the same chromosome. An “epistatic gene” can alter, influence, or suppress the expression of a "hypostatic gene". When the epistatic gene is recessive, the interaction is known as "recessive epistasis". In duplicate recessive epistasis, two genes are involved in the same metabolic path.  Two recessive alleles in any of the two loci can suppress or inhibit the phenotype, in this example, tomato color.

Tomatoes that express the absence of color in the fruit have the following genotypes: aa B_, A_bb y aabb. Tomatoes with these genotypes are white, while tomatoes with A_B_ genotypes are red.

Cross 1:

Parental) aaBB   x   AAbb

Gametes) aB  aB    Ab  Ab

Punnet Square)    aB          aB

                   Ab    AaBb     AaBb

                   Ab     AaBb     AaBb

F1) 100% AaBb, red tomatoes

Cross 2:

Parental)  AaBb    x    AaBb

Gametes) AB Ab aB ab

                AB Ab aB ab

Punnet Square)   AB      Ab      aB      ab

                 AB    AABB  AABb  AaBB  AaBb

                 Ab   AABb  AAbb  AaBb  Aabb

                 aB    AaBB  Aabb   aaBB  aaBb

                 ab    AaBb  Aabb   aaBb   aabb

F2)  9/16 A-B-

      3/16 A-bb

      3/16 aaB-

      1/16 aabb

Genotypes A-bb, aaB- and aabb express white or absence of color.

Genotypes A-B- express red color.    

We know that in the F2 generation there are 219 plants with red fruit and 173 with white fruit.

The total number of plants is 392 (219 + 173), which is 100% of the F2 generation. So:

392 plants ----------- 100% F2 ---- 16

219 red plants--------56% F2------- 9

173 white plants------44% F2 ------ 7  

There is a  proportion of 9:7 because of the interaction between the two genes.            

Answer:

bile from liver helps in the digestion of lipids through emulsification i.e. by keeping the lipids droplets separate from one another.

bile has no enzymes but contains but contains bile salts for the emulsification of lipids. It helps the lipid-digesting enzymes to attack on lipids

Answer:

A tube that extends from a bacterium

Explanation: A tube that extends from a bacterium

Answer:

A tube that extends from a bacterium

Explanation:

Answer:

A rose grower should use Muriate of potash, Potassium sulfate, Potassium nitrate, Sulfate potash magnesia, Kainite etc.

Answer: C :Skeleton

Explanation: The skeleton is the frame work of the body of an organism. Among other functions the skeleton gives the body shape, support, rigidity and protect the body's delicate organs.

Answer:

Explanation below

Explanation

It should be understood that respiration is the process whereby organisms exchange gases with their environments.

And the two types are aerobic and anaerobic respiration.

Aerobic respiration is the type of respiration that occurs in the presence of oxygen, while the anaerobic respiration is the type of respiration that occurs in the absence of oxygen.

The examples of organisms that are used in making alcohol and yoghurt are Sacharomyces cerevisae, which is yeast, and Lactobacilli spp respectively.

Answer: blood travels from the heart through arteries and blood travels to the heart through the veins.

I hope this helps

Answer:

The structure in the picture shows arms of an octopus.

An octopus has six or eight arms and perform several functions such as:

Answer:

to move around

Explanation:

Answer:

20%

Explanation:

6 ÷ 30 × 100

1÷5 × 100

20%

Answer:

B

Explanation:

Its 23 in mitosis cell division

Answer:

A

Explanation:

Butter, as good as it is, is not exactly good for us. Butter is an animal fat, or a saturated fat. This means that at room temperature these fats will remain solid. There is some science behind it and ill say this quickly, it has to do with the carbon atoms being packed with hydrogen atoms. This allows them to intertwine and be solid. The Vegetable Oil being unsaturated, a plant fat, is good for us! These are missing some of the atoms needed to make them stand up straight and be solid. So these are always liquid at room temperature! :)

We have that for the Question "Both vegetable oil and butter are made up of fats.  Why is butter a solid at room temperature, while vegetable oil is a liquid?"

Answer:

Explanation:

Butter contains more saturated fat., vegetable oil contains more unsaturated fat.

Melting point of Saturated fat less than melting point of Unsaturated fat

Intermolecular interactions in saturated fats greater than Intermolecular interactions in Unsaturated fats

Saturated molecules are so close and forms a solid.  UnSaturated molecules are not so close and forms a liquid at room temperature

For more information on this visit

https://brainly.com/question/23379286

Answer:

My answer to you is that the positive willing to do tests and experiments over and being okay with being wrong if you are.

Answer:

evolutionary

more

Explanation:

In this lecture you learned that due to evolutionary descent, organisms share many of the same genes and proteins. However, distantly related organisms have more DNA differences than closely related organisms.

Organic evolution general refers to the descents, with modification, of organisms from common ancestors. Hence, organisms that share the same ancestors share several similar genes and proteins due to their common lineage. The closer the organisms, the more similar their genes and proteins, and the distant the organisms, the more dissimilar their genes.

Answer:

A. making new molecules for growth

Explanation:

Answer:

A

Explanation:

Gel electrophoresis is an amazing technique that allows for DNA separation based on size (as in, length). Using electricity (and keeping in mind that DNA has a negative charge because of the phosphate groups), the shortest pieces will migrate the farthest.

So we can tell that the pieces are in ascending order of size. 4>3>2>1, in length.

A. Strand 1 is the smallest.

Answer:Given results of gel electrophoresis shows that strand 1 is smallest. The pieces are arranged in ascending order of size 4>3>2>1 . Thus,option A is correct.

Explanation:

What is Gel electrophoresis?

Gel electrophoresis is a laboratory technique used to separate mixture of DNA ,RNA or protein according to their molecular size.

The gel used in this technique is composed of polyacrylamide or agarose.

The main application of gel electrophoresis has been in the seperation of molecules and in restriction mapping.

The main advantage of gel electrophoresis is its capability to

simultaneously separate various samples in one round.

Therefore, strand 1 is the smallest according to the result of gel electrophoresis  shown in figure. Thus, option A is correct.

Learn more about gel electrophoresis here:https://brainly.com/question/16797106

#SPJ5

Answer:

I think it is a

Explanation:

Answer:

False

Explanation:

Gram stain technique is a method use to classify bacteria into large groups base on their different cell wall components. It differentiate gram positive and gram negative by coloring them with red or Violet colors.

Gram stain is use for identification and classification of bacteria.

Gram positive stain violet due to presence of thick layers of peptidoglylcan in their cell walls and gram negative stain red due to thin layers of peptidoglylcan in their cell walls.

Answer:

c. A drop in pH would make protonation more likely, and a protonated proximal histidine would not be able to hydrogen bond to O2 to stabilize its binding to the heme due to its positive charge.

Explanation:

Protonation refers to the addition of proton or H+ to the atom or molecule. If the pH of blood drop means acidic so it causes adverse effect on the function of proximal histidine because the proximal histidine gain proton and become cation. Due to this proton, proximal histidine is unable to make hydrogen bond between heme and oxygen and the blood is unable to transport more oxygen with hemoglobin from the lungs.

Answer:

b. Some genes have dominant and recessive alleles.

C. Unit factors occur in pairs.

e. During mitosis and meiosis, when chromosomes are visible in their characteristic shapes. members of a homologous pair have different sizes and exhibit opposite centromere locations

f. Different gene pairs on non-homologous chromosomes will separate independently from each other during meiosis.

g. Alleles segregate from each other during gamete formation at anaphase

Explanation:

Mendel's postulates of inheritance are: (1) Principles of Paired Factors (2) Principle of Dominance(3) Law of Segregation or Law of Purity of Gametes (Mendel’s First Law of Inheritance) and (4) Law of Independent Assortment (Mendel’s Second Law of Inheritance).

Each of these laws provide information on how inheritance of traits by offspring from parents occur.

Principle of paired factors:

A character is represented in an organism (diploid) by at least two factors. The two factors lie on the two homologous chromosomes at the same locus or position.

Principle of Dominance:

Dominant characters are those which always appear in every generatio whereas recessive characters may not appear in some generations e.g. F1 generation.

Law of segregation:

During the formation of gametes (egg or pollen), the paired genes separate or segregate randomly so that each gamete receives one or the other with equal likelihood

Law of Independent assortment:

During gamete formation, segregating pairs of unit factors (genes) assort independently of each other.

From the above consideration,

Option A is wrong because it doesn't correlate with the law of Independent assortment

Option B is correct based on the second postulate

Option C is correct based on the first postulate

Option D is wrong based on the law of segregation which assigns equal likely to gene separation

Option E is correct based on recent studies of genes

Option F is correct based on the law of Independent assortment

Option G is correct based on recent studies on genes

Option H is wrong because dominant genes remain dominant. Co-dominance occurs when allelic pairs are neither dominant nor recessive

Option 'e' is wrong because independent assortment occurs between pairs of genes with contrasting character not a gene pair having the same character where only segregation occurs.

Answer:

Germ cell

Somatic cell

Explanation:

If a gene is altered in a germ cell, the mutation is termed a germinal mutation.

If a gene is altered in a somatic cell, the mutation is termed a somatic mutation.

Answer:

Anaphase 1

Explanation:

Answer:

During secondary succession, the soil isn't damaged hence there is no need for pioneering species such as lichens to dissolve the damaged soil into organic ones that can sustain more complex plants.

Explanation:

Secondary succession, type of ecological succession (the evolution of a biological community’s ecological structure) in which plants and animals recolonize a habitatafter a major disturbance—such as a devastating flood, wildfire, landslide, lavaflow, or human activity (e.g., farming or road or building construction)—significantly alters an area but has not rendered it completely lifeless. Secondary succession is distinguished from primary succession, in which a biological community develops where no life had existed

Secondary succession, type of ecological succession (the evolution of a biological community’s ecological structure) in which plants and animals recolonize a habitatafter a major disturbance—such as a devastating flood, wildfire, landslide, lavaflow, or human activity (e.g., farming or road or building construction)—significantly alters an area but has not rendered it completely lifeless. Secondary succession is distinguished from primary succession, in which a biological community develops where no life had existed previously.

Secondary succession follows a major disturbance, such as a fire or a flood. The stages of secondary succession are similar to those of primary succession; however, primary succession always begins on a barren surface, whereas secondary succession begins in environments that already possess soil. In addition, through a process called old-field succession, farmland that has been abandoned may undergo secondary succession.

Secondary succession takes place where a disturbance did not eliminate all life and nutrients from the environment. Although fire, flooding, and other disturbances may bring visible ruin to a landscape, drive out many plants and animals, and set back the biological community to an earlier stage, the habitat is not lifeless, because the soil retains nutrients and seeds that were set down before the disturbance occurred. Buried seeds can sprout shortly after the effects of the disturbance pass, and some may have greater success from reduced competition and reduced shading. Some species may be adapted to the frequent passage of a particular disturbance. For example, the jack pine (Pinus banksiana), a tree species common in the northeastern U.S. and Canada, requires heat from a wildfire to open its cones (strobili) before seeds can be spread for new growth.

Answer:

The correct answer is option b, that is, a modification in the target of DNA gyrase, is an illustration of acquired resistance.

Explanation:

The activity of DNA gyrase gets inhibit by fluoroquinolones. The enzyme that combines with the DNA and prevents its supercoiling at the time of replication is termed as DNA gyrase. It is a heterotetramer, which is formed of two subunits of GyrA and two subunits of GyrB. Due to the mutation in gene gyrA, the development of resistance takes place in N. gonorrhea against fluoroquinolones.  

Post mutation, gyrA exhibits lesser binding capacity with the fluoroquinolones, and thus, the development of resistance takes place within the bacteria against the fluoroquinolones. The phenomenon of the development of resistance taking place in any microbe against the specific antimicrobial agent for whom it was vulnerable before is termed as acquired resistance, thus, the given case is an illustration of acquired resistance.  

Answer:

toxic buildup.

Explanation:

The excretory system has to do with excreting perilous, harmful materials from the body. If it malfunctions, these materials stay in the body. Therefore, the result of a malfunctioning excretory system would be toxic buildup.

Answer:

Rhinos are A endangered