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Answer:

a. (black fur): phenotype

b. (AA, Aa, aa): genotypes

c. (Aa): heterozygous

d. (aa): hom0zygous recessive

e. (AA): hom0zygous dominant

Explanation:

Answer:

Voluntary

Explanation:

Because some of the muscle attached to the skeleton is voluntary

Answer:

1=65

2=50

3=true

Explanation:

i think answer D( convection currents in liquid iron in the outer core generate an electric current , which produces a magnetic field)

Answer:

The plots with no fertilizer

Explanation:

In an experiment, the control group is used as a comparison for the experimental group (the group being actively changed and observed).

So, in this experiment, the control group is the plots with no fertilizer.

This acts as a good control group because it provides a normal standard to show the effect of fertilizer on the tomato plants.

So, the control group in this experiment are the plots with no fertilizer.

Answer:

Letter c

Explanation:

tissues and organs

Answer: hi, im here to help :3

so, you can either use plants, use pesticides and fertilizers less often or the one thing i know is consider a rain barrel.

Answer:

in my opinion

I think that there is a difference between the both

Explanation:

since living refers to the present time as we do things , move , talk and so on ..whereas life is placed within us like we have life with us even when we sleep.. we breath in the oxygen which is the atmosphere we breath in order to live .. but both have some common similarities

Explanation:

Facultative carnivores are those that include significant amounts of plant material in their diet. Most dogs (canids), for example, are facultative carnivores, though gray wolves and African wild dogs (painted hunting dogs) are hypercarnivorous.

Answer:

B. Using protective barriers to hold the soil sites exposed by construction activities.

Answer:

Explanation:

Researchers use a clock to estimate the date a rock or fossil was produced in order to ascertain its age. Radiometric dating methods, which are based on the natural radioactive decay of specific elements like potassium and carbon, are widely used by geologists to date ancient events.

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Answer:

D. Oxygen is DEPLETED

Explanation:

iT NEEDS OXYEN TO SUSTAIN IN A CLOSED ENVIRONMENT

A sealed ecosphere is able to constantly continue life until oxygen is depleted. The correct option is A.

A sealed ecosphere is a name given to a sealed ecosystem designed and made by Ecosphere Associates, Inc. These are miniature ecosystems in glass containers.

These miniature ecosystems continuously need oxygen to survive, because it contains small plants or mosses, or algae to grow inside.

Thus, option A. Oxygen is depleted is correct.

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Carbon can easily make bonds with other atoms, allowing biomolecules like DNA and RNA, which are crucial for the development and replication that characterize life, to take on a variety of shapes and functions. Thus, option C is correct.

Carbon is an essential component for all living things. Due to its role in the production of numerous bonds and essential molecules in all living things, carbon is an important chemical.

Due to its unique chemical structure, carbon may combine with numerous other molecules to form a variety of compounds.

Because of its propensity to create stable bonds with other elements, including itself, carbon is the main component of organic molecules.

It makes up roughly 20% of an organism's weight and is necessary for them to survive, develop, and procreate.

Therefore, carbon provides structure for a cell.

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Answer:

increase Na+ levels in ECF compared to the original condition.

Explanation:

The increase in ADH secretion increases to regulate sodium balance. The will be increase sodium levels in ECF compared to original conditions. The is no additional water consumption in the reaction and electrolytes will be retained.

Answer:

overreacts to an antigen

Answer:

YES NO YES

Explanation:

Answer:

OptionA    because decomposers are associated

Explanation:

The role of the fungus in the food web shown is to recycle molecular building blocks. The correct option is A.

A food web is a diagram that depicts the interconnection of various organisms in an ecosystem via the exchange of energy and nutrients.

The food web is made up of several interconnected food chains that represent the flow of energy from one organism to the next.

Fungi are decomposers that play an important role in breaking down organic matter and recycling nutrients in many ecosystems.

The fungus in the food web is most likely breaking down dead plant or animal matter, releasing nutrients like carbon, nitrogen, and phosphorus back into the soil.

These nutrients are then absorbed by plants, which are then consumed by herbivores such as the coati and sloth.

Thus, the correct option is A.

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Answer:

Microbiology is the study of microscopic organisms, such as bacteria, viruses, archaea, fungi and protozoa. This discipline includes fundamental research on the biochemistry, physiology, cell biology, ecology, evolution and clinical aspects of microorganisms, including the host response to these agents.

it is the branch of biology that studies micro-organisms (very small organisms). ... The scientific study of microorganisms. (biology) The branch of biology that deals with microorganisms, especially their effects on man and other living organisms.

the study of all living organisms that are too small to be visible with the naked eye. This includes bacteria, archaea, viruses, fungi, prions, protozoa and algae, collectively known as 'microbes'.

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Answer:

The adaptive immune system.

Explanation:

Recognizes and attacks specific pathogens

Hope this helps!

--Applepi101

Answer:

a  Citric acid is added to the solution, but the pH of the solution does

not change.

Explanation:

Answer:

Explanation:

Answer:

hydrophilic and face outward toward the aqueous solution on both sides of the membrane

Explanation:

The cell membrane is mainly composed of phospholipids, which are arranged in a lipid bilayer. In general, phospholipids consist of a glycerol unit, a phosphate group, and two fatty acids. In a lipid bilayer, hydrophilic (polar) phosphate heads are always oriented outwards and interact with surrounding water molecules; whereas hydrophobic fatty acid tails are oriented towards the center of the lipid bilayer away from water. It is for that reason that phospholipids are considered to be amphipathic molecules, where fatty acids confer hydrophobic properties and polar phosphate groups confer hydrophilic properties.

Answer: At low temperatures the fluidity of the membrane decreases and it favors fluidity. The higher the concentration of unsaturated fatty acids, the less tightly the phospholipids can bind and the more fluid (more permeable).

Explanation:

The plasma membrane is a lipid layer that delimits the entire cell, dividing the extracellular medium from the intracellular (the cytoplasm of a cell). They are composed of phospholipids, which are molecules composed of glycerol, a phosphate group and two lipid chains (such as fatty acids). Glycerol is a three-carbon molecule that functions as the backbone of this membrane. A geometry is formed that allows the phospholipids to line up side by side to form broad sheets. They are insoluble in water, but their unique geometry causes them to aggregate in layers without any energy input, as they possess a hydrophilic phosphate head and a hydrophobic tail consisting of the two fatty acid chains. The hydrophilic heads of the phospholipids in a bilayer membrane face outward and are in contact with the aqueous fluid inside and outside the cell. Because water is a polar molecule, it readily forms electrostatic (charge-based) interactions with the phospholipid heads.

Selective permeability is a property of the plasma membrane and other semipermeable membranes that allow only certain particles to pass through them. In this way, those particles that are needed by the cell can enter the cell and those that are not useful to the cell are prevented from entering. In the same way, the cell can eliminate the particles it has produced as waste. In this way, the entry and exit of substances through the membrane is regulated and the correct functioning of the cell is achieved.

For a particle to be able to cross the plasma membrane it must have a size equal to or smaller than the pores of the membrane, it must have the opposite charge to the charge of the membrane or simply have a neutral charge, and if it is larger than the pores it must be dissolved in a solution, decreasing its size and thus be able to enter the cell through the membrane.  

Plasma membranes are fluid and this fluidity depends on their lipid composition and temperature. Depending on the temperature, membrane lipids can be found in two different states or phases: gel (solid-like, with more rigid hydrocarbon chains) and liquid crystal (more fluid, with more mobile hydrocarbon chains). At low temperatures the fluidity of the membrane decreases and in these conditions the increase of its concentration favors fluidity. The temperature at which the transition from one state to the other occurs is the phase transition temperature (Tc). At values below Tc, the bilayer is in the gel state and at higher values it passes to the liquid crystal. It should be noted that there is an equilibrium between the gel state and the liquid crystal state and that the characteristics of the lipids of the bilayer condition the transition temperature. In the case of bilayers consisting of only one type of lipid, the Tc is well defined. But biological membranes are complex lipid mixtures and the transition from one state to another occurs over a range of temperatures. The presence of short-chain or unsaturated fatty acids reduces the transition temperature, while saturated fatty acids and the increase in the length of the hydrocarbon chains cause this temperature to rise. Then, phospholipids with unsaturated fatty acid tails cannot bind as tightly due to the bent structure of their tails. For this reason, a membrane of unsaturated phospholipids remains fluid at lower temperatures than a membrane of saturated phospholipids.  

The fluidity of a membrane is the ability of a molecule to move through it. In short, the higher the concentration of unsaturated fatty acids, the less tightly the phospholipids can bind and the more fluid (more permeable) the membrane will be even at low temperatures. However, at low temperatures the fluidity of the membrane decreases (lower permeability) but the effect will depend on the composition of the fatty acids. To determine the exact permeability, it is necessary to relate the concentration of unsaturated bonds and the length of the fatty acids in the phospholipids and the temperature.

Answer:

Negative feedback mechanisms actually control a process; it can turn it off, whereas positive feedback accelerates the process, allowing the cell no control over it.

Explanation:

Answer:

compound light microscope

Explanation:

:)

The light microscope was in the late 16th century that allowed scientists to study organisms at a new level.

Thus, The microscope revolutionized the field of biology by enabling researchers to observe and study tiny structures, cells, and microorganisms that were previously invisible to the eye.

This technological advancement marked a significant milestone in the history of science.

It paved the way for discoveries and insights into the microscopic world of living organisms.

Thus, The light microscope was in the late 16th century that allowed scientists to study organisms at a new level.

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Answer: its the top one