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In the 1800s, scientists studied how fat-soluble substances and water-soluble substances interact with cell membranes. Their studies provided
evidence that cell membranes are structured to perform certain functions. What function did these studies suggest that cell membranes
perform?
carry materials throughout the interior of the cell
control the cell's activities
control which substances enter the cell
form proteins from fat-soluble substances

The red shift of light from distant galaxies provides evidence that these galaxies are increasing in distance from the earth. Option D

The red shift of light from distant galaxies is an indication that that these galaxies are moving away from us.

This is because the red shift is caused by the Doppler effect, tells of the  change in the frequency of a wave due to the relative motion of the source and the observer.

In a situation of light from distant galaxies, the source is moving away from us, which causes the light to be red shifted.

The answer above is dependent on the full question below;

The red shift of light from distant galaxies provides evidence that these galaxies are A.) decreasing in size B.) increasing in size C.) decreasing in distance from the earth D.) increasing in distance from the earth

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When the object is placed on the slide and is in focus for each objective, the space between the slide and the objective lens gets reduce, so the microscope shouldn't be set exact at the edge.

As the objective magnification increases, the working space also increases. Therefore, you need to change it to a higher power target.

Change the focus knob to increase the stage as you look at the objective lens and stage from the side. Without permitting the objective to make contact with the coverslip, increase it as high as it can go. The sample's focus or the condenser and light intensity might need to be arranged.

Thus the accurate way to focus is that adjustments need to be made effectively and smoothly

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Answer:

An increase in the rate of oxygen that has been removed from hemoglobin could increase the supply of oxygen by the cardiovascular system.

Explanation:

Hemoglobin is a protein, present in the cardiovascular system, whose main function is to remove oxygen from the lungs and take it to the tissues of the human body. Therefore, the more oxygen is removed from the hemoglobin, the greater the oxygen supply. This applies even in the situation presented in the question above, where cardiac output did not increase in the same way as oxygen consumption. In this case, if oxygen consumption is high, the removal of oxygen from the hemoglobin must be increased to supply this consumption.

Answer:

depression, low self-esteem, hostility, and jealousy

Explanation:

The statement that best describes what causes an organism to change over time is Cells gain new DNA as they grow, so as the DNA changes, it gets the new instructions it needs to build the complex tree.

Deoxyribonucleic acid (DNA) is described as a polymer composed of two polynucleotide chains that coil around each other to form a double helix.

In a cell, we have between 20-200 different types of cells each with its own DNA. Those different cells divide and spread their different DNA to various types of the body.

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(1) between 419-359 million years ago (Mya). (2) 145-66 million years ago (Mya). (3)  between 65 million years ago (Mya) to the present (BP). (4) 250-65 million years ago (Mya) and between 541-250 million years ago.

By accretion from of the solar nebula, Earth was created about 4.54 billion years ago, or roughly 1/3 the age of the universe. Although the early atmosphere had very no oxygen, it is likely that volcanic outgassing produced the primordial atmosphere first, followed by the ocean.

The answers given below,

1. Based on the timeline, animal life on land emerged during the Devonian period, between 419-359 million years ago (Mya).

2. The first flowering plants emerged during the Cretaceous period, between 145-66 million years ago (Mya).

3. Primates emerged during the Cenozoic era, between 65 million years ago (Mya) to the present (BP).

4a. The period most likely referred to as the Age of the Dinosaurs is the Mesozoic era, between 250-65 million years ago (Mya). This era is characterized by the rise and fall of the dinosaurs, as well as other reptilian groups.

4b. The period most likely referred to as the Age of Fish is the Paleozoic era, between 541-250 million years ago (Mya). This era saw the diversification of fish, as well as the emergence of plants and land animals.

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Answer:

I think the answer is A

Explanation:

hope its right

Answer: D. the unequal heating of Earth’s atmosphere.

Explanation: It mixes, boom! air pressure.

Explanation:

Ans= n2

Nitrogen gas is an element and not a compound

hope it helps. Please mark brainliest

Answer:

N2

Explanation:

Nitrogen is an element, not a compound. It is found in nature as nitrogen gas, also called dinitrogen, with the chemical formula N2, and makes up 78% of the atmosphere. It is a diatomic element because it is composed of two nitrogen atoms chemically bonded.

Brighter feathers, however, give male birds a reproductive advantage and assist them attract female birds for mating. Because of this, populations of birds with brighter plumage continue to exist despite having a higher risk of being eaten by a predator.

They are used to entice prospective partners. Birds may recognize their own species by using colors and patterns. Birds can camouflage themselves against predators by using different colors. When courting, colors are utilized to draw attention (ie: courtship displays).

Some animals are colored for physical protection, and some frogs can change the color of their skin to regulate their body temperature. Pigments in the skin of some animals prevent sunburn.

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Answer: Its D- become the dominant bird in the population

Explanation: I got it right on the test

Answer: The tissue structure of the liverworts restricts them to a type of environment that affects their size.

Explanation:

Nonvascular plants, also called the Bryophytes in Kingdom Plantae, are simple plants that grow in damp places on land and as the name implies, are non vascular plants( that is, they lack vascular tissues). There are three types of nonvascular plants which includes:

--> Mosses

--> liverworts and

--> hornworts.

Liverworts are restricted to a particular size through the type of tissue they have ( non vascular) because it predisposes them to lack conducting vessels like the phloem and xylem found in vascular plants which aids in conducting water and food to various parts of the plants. Also they do not grow tall like the vascular plants because they lack the qualities that will enable them do so, such as roots, stems and leaves.

Nonvascular plants are low-growing, reproduce with spores, and need a moist or damp environment.

Answer:

ghjk.

Explanation:

ghm,.

emm yeah so it can't killing right?

Tamias striatus commonly known as Eastern chipmunk is a member of the order Rodentia, that is to say, is related to mice. It can be found in eastern North America (the US and Canada), in deciduous forests and urban parks. Its diet consists mainly of seeds, fruits, green plants, mushrooms, and sometimes small invertebrates and eggs, so can be considered as a primary consumer.

Answer:

a. analogous

b. homologous

c. analogous

d. homologous  

e. homologous

f. homologous  

Explanation:

a. Analogous. Porpoises are mammals while salmon are fish. In this case, fins are analogous structures that evolved separately in both groups.

b. Homologous. Pectoral fins evolved from the forearms of tetrapods, and early tetrapods evolved from fish.

c. Analogous. These structures evolved independently through convergent evolution in both groups.

d. Homologous. They are homologous structures that were inherited from a common ancestor (primates).

e. Homologous. Bright red bracts (modified leaves) of poinsettia and green leaves of rose share a common ancestor (i.e., angiosperms).

f. Homologous. They are homologous structures that were inherited from a common ancestor (i.e., angiosperms).

Answer:

what's the question?

Explanation:

Answer:

Big Ideas: All living things have certain traits in common: Cellular organization, the ability to reproduce, growth & development, energy use, homeostasis, response to their environment, and the ability to adapt. Living things will exhibit all of these traits

Explanation:

Answer:

no it can lead to defects as well as leading to evolution, such mutations can happen from more than one factor as well such as environmental factors personal factors ect

Answer:

the answer is c I promise

Explanation:

I just took the test

Answer:

The four eukaryotic kingdoms include animalia , plantae, fungi and protista. they are all organisms with cells that have nucleui

Answer:

D.Sharks are streamlined for active swimming at mid-depths, while skates move about mostly on the ocean bed.

Explanation:

Sharks are known to be active off the bottom of oceans and in mid depth which has a high salinity and the streamlined body helps it to move in this kind of saline conditions.

The Skates however don’t move much and are always at the ocean bed.

This is why Sharks are streamlined for active swimming off the bottom, while skates have flat bodies move about mostly on the ocean bed is the right choice.

Answer:

Explanation:

Glucose isn't among the products of glycolysis as the glucose is usually

converted to other products.

Glycolysis contains metabolic pathways which converts glucose to ATP

which is a form of energy. Glycolysis comprises of series of reactions and

enzymes which catalyzes every stage.

Glycolysis converts one mole of glucose into products which include ATP,

pyruvic acid and NADH

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Answer:

meiosis can only produce egg and sperm cells for sexual reproduction. Meiosis begins following one round of DNA replication in cells in the male or female sex organs.

Explanation:

Meiosis is a type of cell division that reduces the number of chromosomes in the parent cell by half and produces four gamete cells. This process is required to produce. I am not wrong so yeah.

Answer:

Sex cells

Explanation:

Meiosis is a cell division process. A single cell undergoes two divisions, and produces four sex cells or gametes. Sex cells are the sperm in males and the eggs in females. These cells have half of the genetic information.

These cells are used in sexual reproduction. When they fuse, or fertilize, a zygote is formed. The zygote gets half of the genetic information from the mom (egg) and the other half from the dad (sperm). The zygote will develop into an embryo and then a fetus.

Answer: Yes

Explanation: Monocots produce one cotyledon, while dicots produce two. Because seeds are reproductive structures and thus important to a species' survival, plants have evolved many mechanisms to ensure their survival. One such mechanism is seed dormancy. Dormancy comes in two forms: seed coat dormancy and embryo dormancy

Answer:Plants that reproduce by seeds. Seed plants have special structures on them where male and female cells join together through a process called fertilisation. After fertilisation, a tiny plant called an embryo is formed inside a seed.

Answer:

Brief description of the Orginal experiment state what was done

Explanation:

What did you change?

How did the changes help answer the question

Answer:

Heart malfunction

Explanation:

high-pitched, blowing, systolic murmur indicates that he was having a heart issue with initial could lead to heart malfunction because normal heartbeats don't have a high-pitched sound or blowing.

Transcription factors are proteins that bind to specific DNA sequences and regulate the expression of genes. They can activate or repress gene expression by interacting with other proteins and the RNA polymerase machinery. Three mechanisms by which transcription factors regulate eukaryotic gene expression are:

Enhancer or promoter binding: Transcription factors can bind to DNA sequences near the start of a gene, called the promoter region, and enhance or repress the transcription of that gene. Alternatively, transcription factors can bind to enhancer regions that are located upstream or downstream of the promoter region and increase the expression of the target gene. This binding can recruit other proteins, such as coactivators or corepressors, to help facilitate or inhibit transcription.

Chromatin remodeling: Transcription factors can also bind to chromatin, which is the complex of DNA and histone proteins that make up the structure of the genome. By binding to chromatin, transcription factors can recruit enzymes that modify the histones or DNA, such as histone acetyltransferases or DNA methyltransferases. These modifications can either make the chromatin more accessible or less accessible to the RNA polymerase machinery, thereby promoting or inhibiting gene expression, respectively.

Interactions with other transcription factors: Transcription factors can also interact with other transcription factors to form protein complexes that regulate gene expression. For example, some transcription factors can bind to DNA and recruit other transcription factors to bind nearby. These interactions can help to coordinate the expression of genes that are involved in the same biological process or developmental pathway.

Overall, transcription factors play a critical role in the regulation of gene expression in eukaryotes by controlling the accessibility of DNA and the RNA polymerase machinery, and by coordinating the expression of genes involved in related biological processes.

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Autotrophs are plants, algae, and other organisms that can make their own food.

These organisms are called autotrophs, which translates to "self-feeders." Autotrophs play a crucial role in ecosystems as primary producers, forming the foundation of food chains and providing sustenance for other organisms. Photosynthesis is a complex biochemical process that occurs in the chloroplasts of plant and algal cells.

It involves the conversion of light energy from the sun into chemical energy in the form of glucose. Autotrophs accomplish this by utilizing pigments, primarily chlorophyll, to absorb light energy. During photosynthesis, autotrophs take in carbon dioxide from the atmosphere and water from the environment. With the aid of sunlight, these raw materials are transformed into glucose and oxygen.

Glucose serves as an energy source for organisms, while oxygen is released back into the atmosphere as a byproduct. This ability to synthesize their own organic compounds from inorganic substances gives autotrophs a distinct advantage.

Autotrophs exist in various forms, including land plants, such as trees, grasses, and flowers, as well as aquatic plants like seaweeds and pond algae. Additionally, certain bacteria and protists are capable of photosynthesis, broadening the range of autotrophic organisms.

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