Various factors influences the fluidity of the phospholipid bilayer of the cell membrane. If we were to chart the composition of cell
membranes in organisms as we move north from the equator to higher latitudes around the Arctic circle, we would expect to find
phospholipids with
A)
fewer hydrophilic heads.
B)
fewer interspersed cholesterol molecules.
both saturated and unsaturated fatty acid tails.
D
an increase in the length of the fatty acid tails.

Answer:

Ss (male) × Ss (female)

Explanation:

This question involves a single gene coding for hair length in guinea pigs. Based on the information in this question, the allele for short hair (S) is dominant over the allele for long hair (s). This means that a guinea pig will only be phenotypically long-haired if the genotype is "ss".

According to this question, Two short-haired guinea pigs are mated several times. Out of the 100 offsprings produced by this cross, 25 of them have long hair (recessive). This means that the phenotypic ratio of this cross is 3 short hair : 1 long hair i.e. 100 - 25 = 75 short hair. 75/25 = 3/1 = 3:1

To produce this phenotypic ratio, the parents must both be heterozygous (Ss) for the hair length gene.

Answer:

Water is capable of dissolving a variety of different substances, which is why it is such a good solvent. And, water is called the "universal solvent" because it dissolves more substances than any other liquid. ... This allows the water molecule to become attracted to many other different types of molecules

Explanation:

not sure

Answer:

distribute body weight over a large area

Explanation:

This one's fairly simple. If you have large feet, then your body weight is distributed over a large area (you don't sink as much in sand). If your toes were small, massive body weight would sink the feet into sand.

Answer:nikhi

Explanation:

The major organic product (other than ethanol) formed in the given reaction is 2-methylpropene.

Assuming we have alcohol, such as ethanol (CH3CH2OH), reacting under suitable conditions, such as in the presence of an acid catalyst like sulfuric acid (H2SO4), we can describe a dehydration reaction that could yield 2-methylpropene as the major organic product.

In the presence of an acid catalyst, the hydroxyl group (-OH) of the ethanol molecule can undergo protonation, making it a better-leaving group. This protonation occurs due to the acidic nature of the catalyst. The resulting species is an oxonium ion.

Next, the protonated ethanol molecule loses a water molecule (H2O) in a dehydration process. This process involves the removal of a hydroxyl group (-OH) and a hydrogen atom (-H) from adjacent carbon atoms. This results in the formation of a carbon-carbon double bond (C=C) between the two carbon atoms.

Considering the structure of ethanol, the formation of 2-methylpropene (CH3C=CH2) is a probable major organic product. It is formed by the elimination of a water molecule from the ethanol molecule, leaving behind the C=C bond.

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The complete question is:

Draw the major organic product (other than ethanol) formed in the following reaction

Answer:

Explanation:

Nucleic Acids. There are two types of nucleic acid and they are DNA and RNA. DNA is the basic instructions for living things. It is passed down from parent to offspring and is found in the nucleus of the cell. RNA is very important for making proteins in a cell and can be found floating around in the cytoplasm of a cell.but mainly regulates cell processes

Photosynthesis is the process by which plants convert sunlight into energy to fuel their growth and development. While seeds contain the potential to become plants, they do not photosynthesize until they germinate and grow into seedlings with leaves.

To confirm whether photosynthesis had any effect on the study results, researchers could conduct a control experiment where they expose seeds to light but prevent photosynthesis from occurring, such as by adding a chemical that inhibits chlorophyll production.

If the results of this experiment differ from the original study, it would suggest that photosynthesis may have played a role in the initial results. However, since photosynthesis does not occur in seeds, it is unlikely to have any significant impact on a study of seed properties or characteristics.

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If the background extinction rate of birds is 5 per 1,000 years and 17 birds went extinct during the twentieth century, we can calculate the extinction rate of birds during this time period. To do this, we need to convert the time period from years to centuries since the background rate is given in terms of 1,000 years.

The twentieth century spans from 1901-2000, which is 100 years. Therefore, the extinction rate of birds during the twentieth century is:
(17 extinctions / 100 years) x (1,000 years / 1 century) = 170 extinctions per 1,000 years
To determine how many times greater the extinction rate is than the background rate, we can divide the twentieth century extinction rate by the background rate:
170 extinctions per 1,000 years / 5 extinctions per 1,000 years = 34 times the background rate
Therefore, the extinction rate of birds is now about 34 times greater than the background rate. This is a concerning trend as it suggests that birds are at a higher risk of extinction due to human activities and other factors.

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The molecules requiring active transport to move across plasma membrane are Na+, K+, calcium and white blood cells.

Active Transport:

Active transport is the movement of molecules across the plasma membrane from lower concentration to Higher concentration active transport requires energy (ATP) for the movement of these molecules.

There are many molecules which requires energy for moving across the plasma membrane some of those molecules are sodium and potassium, movement of calcium ions in cardiac muscles, amino acid transport across intestinal linings in human gut and this active transport also takes place in white blood cells to defend attacking diseases.

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As it increases blood supply to the cell, drenaline can enhance the probability that its heart will resume a regular beat. Neurological harm by decreasing blood supply to these other systems, including the brain.

The smallest unit in biology that can sustain life on its own and did make up all living things as well as the body's tissues. The epithelial tissue, the nuclear, and the cytoplasm are the three primary components of a cell. The chemicals that enter and leave the cell are governed by the cell membrane, which encloses the cell.

At one time, scientists believed that life spontaneously developed from nonliving objects. experiments, as well as the development of the microscope.

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Cloning eukaryotic genes in bacteria for protein production requires the removal of introns, which is done by producing complementary DNA (cDNA) copies from the mRNA using retrovirus reverse transcriptase.

Cloning eukaryotic genes in bacteria involves the transfer of a specific gene from a eukaryotic organism into a bacterial host for the purpose of producing a desired protein. One of the challenges in cloning eukaryotic genes is the presence of introns, which are non-coding regions within the gene sequence.

In eukaryotic organisms, genes are composed of both coding regions (exons) and non-coding regions (introns). However, bacteria lack the necessary machinery to process and remove introns. Therefore, before cloning a eukaryotic gene in bacteria, the introns need to be removed to obtain a functional gene sequence that can be efficiently transcribed and translated in the bacterial host.

To achieve this, researchers use a technique called reverse transcription to synthesize complementary DNA (cDNA) from the mature mRNA molecule. Reverse transcription involves the use of an enzyme called retrovirus reverse transcriptase, which catalyzes the synthesis of a single-stranded cDNA molecule using the mRNA as a template.

The cDNA molecule lacks introns and contains only the exonic regions of the gene. Once the cDNA is synthesized, it can be inserted into a suitable cloning vector and introduced into bacteria for replication and protein production.

In summary, cloning eukaryotic genes in bacteria for protein production requires the removal of introns, which is accomplished by producing complementary DNA (cDNA) copies from the mRNA using retrovirus reverse transcriptase. This allows for the generation of a functional gene sequence devoid of introns, which can be efficiently expressed in the bacterial host.

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Answer:

The earth has an atmosphere: satellites don't. Plus, the planet and satellites are made up of completely different things, which can affect the emission spectra of light.

Explanation:

Answer:

Archaea bacteria

Explanation:

just search each answer choice asking if its eukaryotic or prokaryotic and it will tell you

Bacteria and Archaea are groups of organisms that are prokaryotic, which means that their cells do not have cellular organelles or a delimited nucleus in the cytoplasm.

The prokaryotic cell is characterized by not having a cell nucleus, therefore its ribosomes are smaller and its genetic material simpler.

Prokaryotes are, in most cases, unicellular microorganisms.

The bacteria is a unicellular and prokaryotic microorganism, which means that it does not have a nucleus, they are a few micrometers long and various shapes including spheres (cocci), rods (bacilli) and helices (spirils).

A diversity of unicellular microorganisms that make up the archaea kingdom lacking nuclei (prokaryotes) is known as archaea.

Their cells are surrounded by a covering (cell wall) made of various materials that give them high resistance against antibiotics or other harmful substances.

Therefore, we can conclude that bacteria and archaea are groups of organisms that are prokaryotic, which do not have a defined nucleus and or organelles surrounded by a membrane.

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Answer:

handy mandy

Explanation:

Answer:

reduced slopes, rubber membrane and a water tube

Explanation:

If any connective tissue remained attached to the follicle cells after a piece of hair is forcibly removed from the scalp, we would find the connective tissue known as Dermal papilla (DP).

The dermal papilla is made up of fibroblasts, collagen, and glycosaminoglycans. The blood supply to the hair is supplied by the capillary loops present in the papilla. The dermal papilla provides the hair follicle with nutrients that help it grow, and it is also responsible for controlling the hair cycle, which has three stages: the growth phase, the regression phase, and the resting phase.

The dermal papilla plays a significant role in hair growth, and it is where new hair growth begins. Thus, dermal papilla is the type of connective tissue that would be found if any connective tissue remained attached to the follicle cells.

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Answer:

Anaerobic means no oxygen

Aerobic means oxygen

Explanation:

Answer:

E

Explanation:

A mutation that confers phenotypic benefits to individuals or a group of individuals would be considered a beneficial mutation.

Mutation involves a sudden change to the gene coding sequence of the DNA. It can occur as a result of substitution, duplication, deletion, inversion, insertion, etc of purine or pyrimidine bases of the DNA.

These changes can be harmful, beneficial, or neutral to individuals. Those that have neutral effects in individuals are also called silent mutations.

In the case of a duplication causing trichomatic vision in humans, it represents a form of beneficial mutation because it enables humans to be able to distinguish between red, green, and blue colors. The ability to distinguish among these colors improves the quality of life of humans.

Answer:

power plants

i think but i dont really know sorry

Explanation:

Answer:

Biotic

Explanation:

broccoli is biotic because it can grow, reproduce, produce and use energy, if something is not living like rocks and dirt it would be abiotic.

Answer:

Biotic.

Explanation:

Broccoli is a crop, which means it is biotic, due to the fact that it is a living substance.

When two comparison groups within an experiment are identical except for one variable, the experiment is called a controlled experiment.

A controlled experiment is one in which all of the variables are the same or constant except for one.

In this type of experiment, a collection of data for a control group is considered, and one or more other groups are investigated. Except for one variable, all circumstances are similar to the control group and each other.

A controlled experiment might look like this:

What effect does soil type have on seed germination time?

A controlled experiment is put up to answer this question.

Four identical pots were used for the experiment, each filled with a different type of soil. Bean seeds were sown in each pot, the pots were placed in a sunny window, watered, and the time it took for the seeds to germinate was recorded.

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Answer:

A.cats

Explanation:

Answer:

Cats

Explanation:

Mitochondria

...

................

.........

To determine the mRNA strand and the resulting amino acid chain during protein synthesis, we need to transcribe the given DNA sequence into mRNA and then translate it into amino acids using the genetic code. These are fundamental steps that both occur during synthesis of protein.

Given the DNA sequence: AAA-GCT-CCA-TCG-GCT-AGG

1. Transcription:

During transcription, DNA is converted into mRNA. We create the complementary mRNA sequence by replacing each DNA base with its corresponding RNA base:

AAA-GCT-CCA-TCG-GCT-AGG (DNA)

UUU-CGA-GGU-AGC-CGA-UCC (mRNA)

2. Translation:

During translation, mRNA is decoded to produce an amino acid chain based on the genetic code. Each set of three mRNA bases, called a codon, corresponds to a specific amino acid. Here's how the mRNA sequence is translated into amino acids using the genetic code:

UUU | CGA | GGU | AGC | CGA | UCC (mRNA)

Phenylalanine-Arginine-Glycine-Serine-Arginine-Serine (we must look at a codon table to interpret what amino acids are corresponding)

Answer:

Therefore, the mRNA strand produced from the given DNA sequence is UUU-CGA-GGU-AGC-CGA-UCC, and the resulting amino acid chain during protein synthesis is Phenylalanine-Arginine-Glycine-Serine-Arginine-Serine.

Answer:

The lytic cycle involves the reproduction of viruses using a host cell to manufacture more viruses; the viruses then burst out of the cell. The lysogenic cycle involves the incorporation of the viral genome into the host cell genome, infecting it from within.

Explanation:

look it up I might have what your looking for