Which procedures were followed in this lab to decrease experimental error? Check all that apply. using only two types of seeds, both from the same source having one student count every sprout in every quadrat using adjacent plots of land for both groups increasing the sample size by combining data from multiple groups repeating the experiment indoors under growth lights measuring plant height the same way and at the same time for both groups

Answer:  A) once, during interphase I

Explanation:

Meiosis is a form of eukaryotic cell division which results in four daughter cells, each of which has half the number of chromosomes as their parent cell.

There are two major phases that a cell goes through during meiosis. About 80% of of the total cell division is interphase.

Its during interphase 1 that the cell replicates its chromosomes, where each of the chromosome has a couple of sister chromatids.

Also, the chromosomes replicate only once.

The correct answer is option A. During the process of meiosis, chromosomes replicate

once, during interphase I.

Cause it does not have to be followed by and believed by the theory itself.

Hello!

The answer should be the third option C.

Drug abuse is best defined as; "the nonmedical or improper use of a drug that can interfere with a healthy life".  

Hope this helps!

Thank you for posting your question at here on Brainly.

Have a great day!

-Charlie

I believe the answer is C as that is the definition. Even if it was a subscription, the constant use of it without stopping can interfeer with a haelthy life.

hope this helps :)

convex lens

A convex lens is thinner at the edges and thicker towards the center.

It spreads light rays apart producing an image smaller than the actual object. Nearsighted people (people who see close objects fine but distant objects appear blurry) have concave lenses in their glasses to correct their vision.

Convex lens is the right answer since it is thicker in the center while concave is thinner in the center

Answer:

B Makes food during photosynthesis

Explanation:

The answer should be positively because eating is good....if not I'm super sorry. its a 50/50 chance lol

Answer:

The food pyramid is an example of science positively influencing society.

Explanation:

We consider something as a positive influence, when it results in improvements for society and citizens as a whole. In this case, we can say that the food pyramid is an example of science that positively influences society. This is because the food pyramid informs how people should eat healthily, without excesses and supplying all the needs of their body, leaving the population more healthy and nourished.

Answer:

The correct answer is option D-the underside of the sporophyte.

Explanation:

Ferns are pteridophytes which evolved earlier than the flowering plants. They do not produce seeds and reproduce through spores.

These spores are usually present on the underside of fern leaf also called "fronds" in sporophytic structures called sori. When these spores are ripened they are released from the capsule which germinates to produce prothallus, a gametophyte from which gametes are produced.

Thus, option D-the underside of the sporophyte is the correct option.

The phosphorus cycle

Hope this helps :)

Answer:

An example of indirect observation is: Using a live video to observe nesting owls.

Explanation:

Indirect observation is the way we can analyze the behavior of a specific subject by the means of recorded video, narration or register of the natural environment of the subject. It could be in the form of written text, video, audio, or even a presentation. However, they have to reflect the specific scenario and behavior of the subject. They can't be manipulated all has to be presented as the original event.

Answer:

B

Explanation:

I did it on A-pex and i did A because it's what the 1st one said and its wrong It was actually

B- To determine if one trait could affect the inheritance of another trait.

convolutions

explanation

The convolutions is basically  consist of grooves called sulci and raised ridges in between called gyri . A convolution is a curvature of a surface. Picture a fully inflated beach ball. It has no convolutions - it is entirely convex. Now, take out some of the air, and fold the surface of the ball. Each place you make a valley in the surface, you make a convolution

The answer is Convolutions

Convolutions are located in the cerebral cortex area of the brain. This area has a wrinkled surface , hence named as Convoluted part or convolution. Convolutions contain ridges and grooves. Deep portions or grooves are called sulci Whereas raised portions or ridges are called gyri. Basically gyri are the specific area of the brain where memories are stored.

Answer: Energy stored in plants is transferred to humans and animals that eat them.

Biosphere is a sphere on earth where living organism forms a biotic community. It is the sum of all the ecosystems. Various life processes occurring in a biosphere are dependent on other spheres on earth that are lithosphere (rocks), hydrosphere (water) and atmosphere (air). In biosphere living beings interact and fulfill their energy requirements.

Energy stored in plants is transferred to humans and animals that eat them here only biosphere is involved. As, energy produced by plants which is a living component of the ecosystem through photosynthesis is transferred to other living components of the ecosystem that are humans and animals. Therefore, only one sphere is involved in this process.

Answer:

The correct option is d. Energy stored in plants is transferred to humans and animals that eat them

Explanation:

Hello!

We will answer that!

We can divide the ecosystem into different parts: hydrosphere, it is the part that contains water; the atmosphere is the part that is the air; the lithosphere is the part that has the rocks; The biosphere is the earth and where the living beings are.

In the ecosystem, all parts coexist, help each other and connect.

Let's analyze all the options:

Plant roots take in water from the soil: in this option two parts act, the biosphere and the hydrosphere

Plants take in carbon dioxide from the air: in this option two parts act, the biosphere and the atmosphere

During photosynthesis, plants make food and release oxygen into the air: in this option two parts act, the biosphere and the atmosphere

Energy stored in plants is transferred to humans and animals that eat them: in this option they act only a part that is the biosphere

After the analysis, we conclude that the correct option is d. Energy stored in plants is transferred to humans and animals that eat them

D; Each daughter cell receives its own copy of the parent cell's DNA.

it would be D hope this helps

Your answer is C if its asking for trace in the human body and if its asking for normal trace such as (DNA) it would be A .

Brainiest Please?

The option C is correct. Iron is a trace element.

Trace elements are elements which are required in small amounts but they are essential to the body.

Carbon and hydrogen are needed in abundant amount because it is present in all organic compounds like sugars, and lipids.

Nitrogen is part of amino acids, building blocks of proteins.

Iron is essential only for some enzymes and hemoglobin. And it can also be recycled in the body.

The correct answer is: B. the lysosomes.

Lysosomes are single-membrane organelles found in eukaryotic cells. Lysosomes are specialized vesicles created in the rough endoplasmic reticulum (rER) with a variety of enzymes inside it. Their function is digestion: of the food or of the cell when it dies and that function is performed via enzymes.

Answer:

Biodiversity is defined as the diversity or variance found among the organisms living on Earth. It can be seen at various levels such as genetic level, spices level and ecosystem levels.

Biodiversity in an ecosystem increases its productivity, makes it more resilient and maintains the health of the ecosystem.

Increased diversity makes an ecosystem more resilient by following ways:

Answer:  The cell membrane; which is "selectively permeable" .

____________________________________________________

What are the options?

The correct answer is space satellite.

The on-orbit repairs becomes much easier if a satellite is attached to the spacecraft and if the spacecraft has a manipulator arm. Then this arm can be used to move large components around. This also provides astronauts with a surface to stand on and be attached to.

The plasma membrane is what allows things in and out of the cell. It has phospholipids and microvilli on it.

The plasma membrane, also known as the cell membrane, is a selective barrier that surrounds the cytoplasm of a cell, separating the cell's internal environment from the external environment. It is primarily composed of a double layer of phospholipids, which forms a lipid bilayer, with embedded proteins, cholesterol, and carbohydrates attached to some of the lipids and proteins.

Structure of the Plasma Membrane:

1. Phospholipid Bilayer: The bilayer consists of two layers of phospholipids arranged in an antiparallel fashion. Each phospholipid molecule has a hydrophilic (water-attracting) head and two hydrophobic (water-repelling) tails. The hydrophilic heads face outward, towards the aqueous environment inside and outside the cell, while the hydrophobic tails face inward, away from the water. This arrangement creates a stable barrier that is selectively permeable.

2. Membrane Proteins: These are embedded within or associated with the lipid bilayer. They can be classified into two types:

 - Integral Proteins: These are permanently anchored in the membrane and may span the entire width of the bilayer. They can function as channels, transporters, receptors, or enzymes.

 - Peripheral Proteins: These are temporarily associated with the membrane, either with the lipid bilayer or with integral proteins. They are found on the inner or outer surface of the membrane and are involved in signaling pathways or provide structural support.

3. Cholesterol: Found among the phospholipid molecules, cholesterol helps to maintain the fluidity of the membrane, making it less viscous at low temperatures and preventing it from becoming too fluid at high temperatures.

4. Carbohydrates: Attached to some lipids and proteins on the outer surface of the membrane, carbohydrates play a role in cell recognition, cell signaling, and the formation of the extracellular matrix.

Functions of the Plasma Membrane:

1. Selective Permeability: The plasma membrane allows certain substances to pass through while blocking others. Small, nonpolar molecules can diffuse across the lipid bilayer, while ions and polar molecules require the assistance of membrane proteins to cross.

2. Transport: Membrane proteins facilitate the movement of substances across the membrane either down their concentration gradient (passive transport) or against their concentration gradient (active transport).

3. Cell Recognition and Communication: Glycoproteins and glycolipids on the cell surface serve as markers that allow cells to recognize each other. This is crucial for processes such as immune response and cell signaling.

4. Signal Transduction: Membrane proteins, particularly receptors, play a key role in converting external signals into cellular responses. This process is known as signal transduction.

5. Enzymatic Activity: Some integral proteins have enzymatic functions, catalyzing reactions at the membrane surface.

6. Cell Adhesion: Certain membrane proteins mediate cell-to-cell adhesion, which is important for maintaining the structure of tissues.

7. Energy Transformation: In some cells, such as those in the mitochondria and chloroplasts, membrane proteins are involved in the conversion of energy, such as during photosynthesis and cellular respiration.

In summary, the plasma membrane is a dynamic structure that serves as a protective barrier, regulates the movement of substances into and out of the cell, and plays a critical role in cellular communication and adhesion. Membrane proteins are integral to these functions, facilitating transport, signaling, and many other cellular processes.

When animals of the same species interact with each other they are called as intra specific interactions.

They produce the same species and compete for the limited resources available to them.

Air moves from higher pressure to lower pressure which causes the wind to flow in a particular direction.

Air density variations, which are connected to temperature, are what is causing this shift in pressure which creates a particular difference in air pressure gradient.

Because warm air's gas molecules move faster and further apart than those in cooler air, warm air is less dense than cooler air.

Air density has a direct relationship to pressure, and changes in temperature, humidity, and rising or sinking air are the main factors influencing air density.

Therefore air density is related to pressure so it moves from higher pressure to lower pressure.

Learn more about air, here:

https://brainly.com/question/11767207

#SPJ2

Changes in air density cause differences in air pressure.

Cold air is denser than warm air because gas molecules are at lower velocities and are compact to each other in cold air. Air flowing from high-pressure to low-pressure zone forms winds. Air density increases when the temperature is constant and pressure increases.

Similarly, if the temperature increases and pressure is constant the density will decrease. A 3% increase in temperature can decrease air density by 1%.

Thus, change in temperature and pressure can cause changes in air density which can cause differences in air pressure.

Learn more about Air density here:

https://brainly.com/question/30075980

#SPJ6

The right answer is D. modifying, sorting, and packaging proteins prior to transport.

The Golgi apparatus is one of the organelles necessary for the production of functional proteins.

The Golgi apparatus is a eukaryotic cellular organelle.

The Golgi apparatus is a transit and reservoir for proteins and lipids made in the endoplasmic reticulum. This is part of the network of internal membranes that have put in place to transport macromolecules.

In particular, it makes it possible to add post-translational modifications to the newly synthesized proteins.

1. C. Metaphase

2. F. Cytokinesis

3. D. Anaphase

4. E. Telophase

5. B. Prophase

6. A. Interphase

1) Metaphase

2)Cytokinesis

3) Anaphase

4)Telophase

5)Prophase

6) Interphase

oui :>

The answer is A) Sulfuric Acid.

Answer: A). Sulfuric Acid

Explanation:

The sulphur dioxide is a gas which is liberated from volcanic eruption and burning of the fossil fuels. This gas reacts with the water vapors present in the atmosphere. It forms sulphuric acid in the atmosphere. It falls along with rain water. The sulphuric acid along with rain water forms acid rain.