Chapter 9: Gender, Gender Identity, Gender expression and sexism

Answer:

Reducing the amount of light improves contrast, making the specimen "stand out" against the background. Some microscopes have an annular condenser, which is a plate under the stage that can be rotated. The plate consists of holes of different diameter.

Explanation:

The correct description is:

Aristotle’s and Linnaeus’s classification systems both divided all life into two groups: plant and animal: option B.

Aristotle was a Greek philosopher who studied life and living things to be able to explain their behavior.

Linnaeus was a Biologist who studied and classified living things into plants and animals.

Aristotle and Linnaeus both classified living things into plants and animals.

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If a 6 foot-tall woman steps on a tack, it will take for that information to travel to her brain on:

(a) myelinated: 0.02 seconds

(b) unmyelinated: 2 seconds

What is Myelination?
Formed around nerves, particularly those in the brain and spinal cord, myelin serves as an insulating coating or sheath. It is composed of fatty and protein components. Electrical impulses may move swiftly and effectively along nerve cells because to its myelin layer. These impulses become slower if myelin is compromised.

In a manner comparable to the insulation found surrounding the wires in electrical circuits, myelin, a membraneous coating created by glial cells around axons, serves as an insulator. The transmission of signals between neurons can be greatly sped up by this "myelination" process (known as action potentials).

Therefore, Option C is correct.

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When individuals with certain inherited traits are more likely to survive and reproduce than those with less favorable traits, natural selection occurs.

Natural selection is a fundamental concept in evolutionary biology proposed by Charles Darwin. It is the process by which certain heritable traits become more or less common in a population over successive generations. Natural selection occurs when individuals with advantageous traits have a greater chance of surviving and reproducing, passing on those traits to their offspring.

The key components of natural selection are as follows:

1. Variation: Individuals within a population exhibit variation in their traits. These variations can be due to genetic differences, environmental factors, or a combination of both.

2. Selective Pressure: Environmental factors, such as predation, competition for resources, or changes in habitat, create selective pressures that affect the survival and reproductive success of individuals with different traits.

3. Differential Survival and Reproduction: Individuals with traits that are better suited to their environment have a higher probability of surviving and reproducing. They pass on their advantageous traits to their offspring, increasing the frequency of those traits in subsequent generations.

4. Heritability: The traits that confer a survival or reproductive advantage must have a genetic basis and be heritable, meaning they can be passed from parents to offspring.

Over time, through the accumulation of small changes and the elimination of less favorable traits, natural selection can lead to the adaptation of populations to their specific environments. This process is a driving force behind the diversity and complexity of life on Earth.

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Answer:

Sry JK

Answer: In contrast to a mitotic division, which yields two identical diploid daughter cells, the end result of meiosis is haploid daughter cells with chromosomal combinations different from those originally present in the parent. In sperm cells, four haploid gametes are produced.

The product of meiosis is four haploid daughter cells with genetically different as compared to their parents.

Meiosis may be defined as the type of cell division in which a parent cell is able to synthesize four daughter cells that are haploid in nature. These daughter cells are genetically dissimilar with respect to their parents. It is also known as reductional division.

The process of meiosis generally occurs in the germ cells (sex cells) of males and females. The division of cells occurs twice in meiosis. Meiosis is generally completed in two steps that are as follows:

These steps are further divided into Prophase, Metaphase, Anaphase, and Telophase. Overall, it significantly determines the nature as well as the characteristics of a cell

Therefore, the product of meiosis is four haploid daughter cells with genetically different as compared to their parents.

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The question seems incomplete. Your complete may be as follows:

Which of the following describes the products of meiosis?

The enzyme for which nucleotides are the substrate would be DNA polymerase.

DNA polymerase is an enzyme primarily responsible for the elongation of nucleotide chains of the daughter strands during the process of DNA replication. In other words, DNA polymerase is saddled with the responsibility of replicating DNA correctly from parent DNA strands.

During DNA replication, the double helix structure of the DNA is unwound using enzymes. An RNA primer then binds to the leading strand at the origin of replication while it binds to the lagging strand at multiple regions. A primer represents a short nucleotide sequence.  

Thereafter, the DNA polymerase elongates the primer by adding complementary nucleotide bases of the parent strand to the primer. Thus, to cut the long story short, the DNA polymerase needs nucleotides as its substrate in order to function.

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Answer:

(c) the kidneys

Explanation:

Your kidneys remove wastes and extra fluid from your body, basically filtering fluids

Answer:

C

Explanation:

Bones in the legs, arms, spine and pelvis grow at different rates, so option a is correct answer as during childhood and adolescence, bone growth is actively occurring, and different bones may experience growth spurts at different times.

Long bones, such as those in the legs and arms, typically undergo rapid growth during puberty. These bones have growth plates, also known as epiphyseal plates, located near the ends. The growth plates are responsible for the lengthening of the bones. As individuals reach adulthood, usually around the age of 18-20, the growth plates close and bone lengthening ceases.

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The statement 'neutral mutations (mutations that have neither a positive or negative effect) accumulate at an exponential rate over time' is False.

A mutation is any alteration in the nucleotide (DNA) sequence of an organism's genome.

Mutations can be neutral, beneficial, or deleterious depending on the environment in which an organism lives.

In conclusion, the statement 'neutral mutations (mutations that have neither a positive or negative effect) accumulate at an exponential rate over time' is False.

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It is known as "groundwater"

Hope this helps

~Knyx~

The option which is not a routinely observed fact, instead is a conclusion about evolution is: (C) Evolution can be guided by intelligent breeders.

Evolution is the process of changes in the inherited traits for several successive generations of an organism. Evolution is a gradual and slow process. Evolution is a natural process where mating between two individuals must be random.

Breeders are the organisms that participate in the process of breeding or mating. In the process of evolution, mating must be random. If only intelligent breeders are involved in mating, then it must be non-random and hence this is not a regularly observed fact.

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Answer:

They are similar yet different because

Explanation:

the male reproductive organ has to send male reproductive cells to the female reproductive organ and fertilise the female reproductive cell

but in animal they are two different organisms yet the same spicie but in flower it can be the same flower

The phonological processor allows us to do the following:
a. perceive sounds
b. remember sounds
c. interpret sounds
d. produce speech

The phonological processor plays a crucial role in processing and understanding spoken language, as it enables us to perceive, remember, interpret, and produce speech sounds.

When a person hears a word or sentence, the phonological processor first analyzes the incoming sound signal and identifies the phonemes (the smallest unit of sound in a language) that make up the word. It then applies a series of phonological processes (such as assimilation, deletion, and substitution) to the phonemes to create a phonetic representation of the word that reflects the specific speech sounds that were produced.

Similarly, when a person produces speech, the phonological processor selects the appropriate phonemes for the intended word or sentence and applies phonological rules to transform the phonemic representation into a phonetic representation suitable for articulation.

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Answer:

the first one :))))))))

The binding of CRP (cAMP receptor protein) to DNA in the lac operon is a key regulatory mechanism in E. coli that controls the expression of the lac genes involved in lactose metabolism.

The lac operon is a genetic regulatory system found in E. coli that controls the expression of genes involved in lactose metabolism. The lac operon consists of three main components: the promoter, the operator, and the structural genes (lacZ, lacY, and lacA). The binding of CRP, also known as CAP (catabolite activator protein), to DNA plays a crucial role in regulating the lac operon.

In the absence of lactose, the lac repressor protein binds to the operator, preventing the transcription of the lac genes. However, when lactose is present, it is converted to allolactose, which binds to the lac repressor and induces a conformational change, causing it to release from the operator.

CRP, on the other hand, requires the binding of cAMP (cyclic adenosine monophosphate) for activation. In the presence of glucose, cAMP levels are low, and CRP remains in an inactive state. However, when glucose is scarce, cAMP levels rise, leading to the activation of CRP. Active CRP then binds to a specific DNA sequence called the CRP binding site upstream of the lac promoter. This binding enhances the binding of RNA polymerase to the promoter, resulting in increased transcription of the lac genes and thus increased expression of the enzymes involved in lactose metabolism.

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All - growth, exchange of gases, excretion, reproduction, and death (option d).

All living organisms undergo various life processes to maintain their existence. Let's analyze each option to determine which life processes are carried out by an organism's cells:

A. Only growth and exchange of gases: While cells are involved in growth and exchange of gases, they also participate in other life processes. This option is incomplete.

B. Only growth, exchange of gases, and reproduction: Cells play a crucial role in reproduction as they are responsible for the production of gametes and the process of cell division. However, there are additional life processes that cells also undertake.

C. Only growth, exchange of gases, excretion, and reproduction: This option includes excretion in addition to growth, exchange of gases, and reproduction. Cells participate in excretion by eliminating waste materials. However, there is one more life process that cells experience.

D. All - growth, exchange of gases, excretion, reproduction, and death: This option encompasses all the mentioned life processes. Cells are involved in growth as they undergo cell division and increase in number. They exchange gases through processes like respiration. Cells excrete waste products. They participate in reproduction through the formation of gametes and cell division. Lastly, cells also experience death as they have a limited lifespan.

Therefore, the correct answer is D. All - growth, exchange of gases, excretion, reproduction, and death.

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Answer:

Absorption: The process of absorbing nutrients occurs primarily in the small intestine. Once the food is broken down into smaller molecules through digestion, these molecules are absorbed into the bloodstream. For example, carbohydrates are broken down into simple sugars, proteins into amino acids, and fats into fatty acids and glycerol.

Circulatory System: The circulatory system, composed of the heart, blood vessels, and blood, plays a crucial role in transporting absorbed nutrients. The blood vessels form an extensive network that reaches all tissues and organs in the body.

Hepatic Portal System: After absorption, most of the nutrients are transported to the liver through a specialized system called the hepatic portal system. This system ensures that the liver, which performs various metabolic functions, receives a concentrated supply of nutrients before they are distributed throughout the body.

Bloodstream Transport: Once in the bloodstream, nutrients are carried by the plasma, the liquid component of blood. Different nutrients use specific mechanisms for transport:

Glucose: It is transported by facilitated diffusion or active transport, depending on the concentration gradient, with the help of insulin.

Amino Acids: They are transported through the bloodstream by specific carrier proteins.

Fats: Dietary fats are initially packaged into structures called chylomicrons and transported through the lymphatic system before entering the bloodstream. Once in the bloodstream, fats are carried by lipoproteins such as low-density lipoprotein (LDL) and high-density lipoprotein (HDL).

Distribution to Tissues: As the blood circulates, nutrients are distributed to various tissues and organs according to their specific needs. Nutrients are delivered to cells through the capillaries, the smallest blood vessels in the body, which have thin walls that allow for the efficient exchange of nutrients and waste products.

Cellular Uptake: Nutrients are taken up by cells through various mechanisms. For instance, glucose enters cells with the help of insulin, while amino acids are transported into cells through specific carrier proteins. Fats are taken up by cells through receptor-mediated endocytosis or by diffusion.

Metabolism: Once inside the cells, nutrients undergo metabolic processes to produce energy or build new molecules. Glucose, for example, can be metabolized through glycolysis, the Krebs cycle, and oxidative phosphorylation to generate ATP, the cell's energy currency.

Waste Removal: Metabolic byproducts, such as carbon dioxide and urea, are generated during nutrient metabolism. These waste products are transported back into the bloodstream and eventually eliminated from the body through the lungs (carbon dioxide) or the kidneys (urea).

It's important to note that different nutrients may have different transport mechanisms and pathways. The body's ability to efficiently transport and utilize absorbed nutrients is vital for maintaining proper functioning and overall health.

Answer:

The father most likely has HH and cc as its genotypes.

Explanation:

Answer:

C

Explanation:

because a population is a group of the same species that lives in a given area

Here are the appropriate statements about an unknown specimen grown on Indole media based on your observation: B. The organism tested converts tryptophan to indole.C. This media is inoculated by stabbing the agar in the tube.E. This is a picture of a positive test result.F. The organism tested fermented indole.

The indole test is used to determine an organism's ability to decompose the amino acid tryptophan into indole. The indole production is detected by adding Kovac's reagent, which contains p-dimethylaminobenzaldehyde, to the medium after incubation.

Tryptophan is an amino acid that is the precursor to indole production in this test. The amino acid tryptophan is a prerequisite for indole production. It is for this reason that organisms that can break down tryptophan into indole are positive.

This is the appropriate response to the student's question:

An unknown specimen was grown on Indole media. Based on your observation of this specimen choose the appropriate statements. B. The organism tested converts tryptophan to indole.C. This media is inoculated by stabbing the agar in the tube.E. This is a picture of a positive test result.F. The organism tested fermented indole.

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1) Well ; 2) Micropipette; 4) Sticky end ; 6) CRISPR ; 7) Gene ; 9) Plasmid ; 10) Recombinant DNA ; 13) Variants ; 14) Recipient ; 15) GMOs ; 16) DNA ligase

1. The answer to the first down question, "depression in a gel," is likely "well." In biology experiments, researchers will often create wells in a gel to contain samples for analysis.

2. The second down question, "measures tiny quantities of liquid," could refer to a few different scientific instruments, but the most likely answer is a micropipette. Micropipettes are used to measure and transfer small volumes of liquid with high precision.

4. "DNA cut to a step-like end" refers to a specific type of DNA cutting technique called a blunt end cut. This type of cut results in a flat or "step-like" end on the DNA strand, rather than a staggered or "sticky" end.

6. The down question "a way to edit DNA" likely refers to the CRISPR-Cas9 system, a relatively new technique that allows scientists to target and edit specific genes within an organism's DNA.

7. "A chunk of DNA" could refer to any segment of DNA, but in the context of molecular biology experiments, it likely means gene.

9. The down question "circular DNA that self-replicates" describes a plasmid. Plasmids are small, circular pieces of DNA that exist independently of the chromosomal DNA in a cell. They often contain genes that confer specific traits or allow for certain metabolic functions.

10. "DNA and a plasmid together" could describe a number of things, but the most likely answer in the context of molecular biology is a recombinant DNA.

13. The down question "organisms that belong to the same species with different traits" describes variants.

14. "Receives foreign DNA" could describe recipient.  In molecular biology experiments, this is often accomplished through a process called transformation, in which a cell is exposed to DNA from another organism and takes it up into its own genome.

15. The down question "organism that contains foreign DNA" could describe a genetically modified organism (GMO). GMOs are organisms that have had their genetic makeup altered through the introduction of foreign DNA, often for specific research or agricultural purposes.

16. "Couples DNA outside of cell" could refer to a few different processes, but in the context of molecular biology, it likely means DNA ligase. DNA ligase is an enzyme that can join together two DNA strands, creating a single, continuous molecule. This process is often used to create recombinant DNA molecules in the lab.

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Answer:

21.553125

Explanation:

You can round to whatever you feel, but this is the answer when you multiply 2.75 x 2.75 x 2.85

:D

Answer: it controls genes that get used.

Explanation:

Answer:

False

Explanation:

Distilled water is neutral by nature. We can verify it by litmus test. Water does not change the colour of either red or blue litmus.

Answer:

False

Explanation:

Because if it's a neutral solution, then it's not an acid nor an alkaline. It will stay colourless

If a chimpanzee bone marrow cell in prophase of mitosis contains 48 chromosomes, it contains a total of 96 chromatids (2 chromatids per chromosome).

Mitosis is the process by which cells divide to form two identical daughter cells. It is a fundamental process of cell division that occurs in all eukaryotic cells and is essential for the growth, repair, and reproduction of cells and tissues. In the prophase of mitosis, each chromosome consists of two identical sister chromatids that are joined together at the centromere. During mitosis, the sister chromatids will separate and move to opposite poles of the cell, forming two identical daughter cells with the same number of chromosomes as the original cell. This process ensures that each daughter cell receives an exact copy of the genetic material from the parent cell.

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Answer:

habitat destruction

Explanation:

it would be hard for them to be able to make another habitat all over again after all of the hard work that was put in to it but yet again trapping and taking away the animal from their family is very hard to

A 20-year-old man made the decision to plunge into the icy lake. In order to keep more blood in the warm centre of his body, many of the capillaries in the extremities will close down.

Two scientists, Schleiden (1838) and Schwann, put out the cell idea (1839). The basic unit if life, the cell, is described as being present in all plants and animals. Virchow (1855) added to the cell theory by proposing that all cells originate from pre-existing cells.

The largest cells are seen in ostrich eggs. The largest cell is the zebra egg, which is between 15 and 18 centimeters in length in width. Its longest cell type is the nerve cell. The largest cell in the human body is the female ovum.

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The statement which is true regarding asexual reproduction is the last one, which says that the offspring are clones of the parents. This is because this process only takes part the genetic pool from one parent, not from two, as occurs in sexual reproduction. Here (in asexual reproduction), the process that occurs is mitosis, that is a replication of the parent information, and it's found in organisms like bacteria (by binary fission), and only in a few animals, as geckos, that reproduce themselves without a mate by parthenogenesis.