which feature is believed to have been the first step in the evolution of land plants from the green algae?

Answer:

46

Explanation:

Answer:

Chloroplasts convert light energy to chemical energy to supply food to the plant through a process called photosynthesis

Water and Sunlight

Answer:

the property of high heat capacity allows highly regulated internal body temperatures.

Explanation:

Answer:

oxygen po

Explanation:

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The upper and lower teeth are embedded in alveolar processes. The correct answer is D.

The structure that secures the roots of your teeth is known as the alveolar process, commonly referred to as the alveolar bone. For both your top and bottom rows of teeth, you have a thick bone alveolar process.

The area directly above your top row of teeth and beneath your bottom row. The bottom process is situated directly over your jawbone, whereas the top process is more precisely situated beneath your maxillary sinus.

The arrangement of your teeth and the performance of your periodontal ligament depend on the alveolar process, which joins your teeth to your jawbone (PDL). Due to its special ability, the alveolar process can tolerate the forces that chewing places on your mouth.

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The type of bone that is arranged in concentric layers is called compact bone or cortical bone. Compact bone is denser than spongy bone, making it stronger and more resistant to bending or fracturing.

The concentric layers, also called lamellae, are made up of collagen fibers and mineral deposits that provide structural support to the bone.

Red marrow is found inside the spongy bone, specifically in the cavities of long bones such as the femur and the humerus, as well as in the flat bones of the skull, pelvis, and ribs. Red marrow is responsible for producing red blood cells, white blood cells, and platelets, which are necessary for oxygen transport, immune function, and blood clotting. In contrast, yellow marrow is found in the central cavity of long bones and is primarily composed of adipose tissue (fat).

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Answer:

d) Beta-lactams

Explanation:

Beta-lactam antibiotics include compounds such as penicillins, and cephalosporins.

To express the blood antigen, the product H substance is required. A cross between IA I B Hh and IA I B hh should result in 1/4 AB, 1/8 A, 1/8 B, and 1/2 O make up the blood types.

Gene. A and B antigens are synthesized on RBCs by particular glycosyltransferases that are encoded by the ABO locus. The presence of the H antigen is a prerequisite for the creation of the A/B antigen. The H locus in RBCs is responsible for encoding the enzyme that produces the H antigen (FUT1).

Generally utilized Optimistic: 35% Negative O: 13% 30% are favorable 8% is unfavorable. Mumbai is where the Bombay Blood, often known as the hh blood group, was initially identified (then called Bombay). It was found in 1952.

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Correct Question:

The product H substance is needed to express the blood antigen. A mating of IA I B Hh X IA I B hh should produce what ratio of blood types?

In the western Grand Canyon hundreds of volcanic eruptions occurred over the past two million years. At least a dozen times, lava cascaded down the walls of the Inner Gorge, forming massive lava dams that blocked the flow of the Colorado River. ... 1064 a series of eruptions built the park's namesake cinder cone.

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Answer:

In the western Grand Canyon hundreds of volcanic eruptions occurred over the past two million years. At least a dozen times, lava cascaded down the walls of the Inner Gorge, forming massive lava dams that blocked the flow of the Colorado River.

Explanation:

The diameter of hair is 50 micrometers.To convert micrometers to kilometers we have to divide the value in micrometers by 10^9 (1 kilometer = 10^9 nanometers).50 micrometers = 50/10^9 kilometers= 0.00000005 kilometersb.

The diameter of a hydrogen atom is 10 nanometers.To convert nanometers to meters we have to divide the value in nanometers by 10^9 (1 meter = 10^9 nanometers).10 nanometers = 10/10^9 meters = 0.00000001 metersc. The density of ice is 920 kilograms per cubic meter.

To calculate the mass of a 0.20 cubic meter block of ice we can use the formula;mass = volume × density = 0.20 cubic meters × 920 kilograms/cubic meter = 184 kilograms Therefore, the mass of the 0.20 cubic meter block of ice is 184 kilograms.

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The most powerful way to infer evolutionary relationships relies on genetic evidence.

Genetic evidence, specifically DNA sequencing and analysis, is considered the most powerful and reliable method for inferring evolutionary relationships. By comparing the DNA sequences of different organisms, scientists can identify similarities and differences in their genetic makeup. The more closely related two species are, the more similarities their DNA sequences will have.

This allows researchers to construct phylogenetic trees and determine the evolutionary relationships between different species. Genetic evidence provides a molecular-level understanding of evolutionary history and can reveal hidden connections and patterns that may not be apparent through other types of evidence, such as anatomical or behavioral traits.

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The correct answer is d. Nuclear pores apparently permit the passage of only proteins inward and outward, but RNA only outward.

Nuclear pores are small channels in the nuclear envelope that allow for communication between the nucleus and cytoplasm. While some molecules can freely pass through these channels, others require specific transport proteins to regulate their movement. In the case of nuclear pores, proteins can move in and out of the nucleus, but RNA can only move out. This helps to ensure that the proper molecules are present in the right location within the cell. A nuclear pore is a component of the vast protein complex known as a nuclear pore complex, which spans the nuclear envelope, the double membrane that encloses the nucleus of eukaryotic cells.

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Fever  is referred to as the systemic effects of inflammation in this type of scenario and is therefore denoted as option 2.

This is referred to the way the immune system responds to foreign bodies through the body's white blood cells protecting from infection or diseases which are caused by invaders.

When the immune system attacks the foreign bodies, there is usually a change in temperature because it helps in initiating the response which occurs so that the body can heal itself in this type of condition which is why fever was chosen as the most appropriate choice.

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Answer:

Heterozygous = When the offspring inherits two different alleles

Probability = The mathematical chance that something will happen

Trait = Characteristics of an organism that makes it unique

Dominant = The allele that always shows up and hides the weaker allele

Recessive = The allele that is always masked in the presence of the stronger allele

Heredity = The passing of traits from parent to offspring

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It is extremely unethical to market dangerous products to people. By deceiving consumers into purchasing a product that could be harmful to their health, it influences their purchasing decisions.

The fundamental justifications for consumer ethics were unethical practices such as selling dangerous goods, lying and treating customers unfairly in advertisements, manipulating prices, etc.

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Answer:

Withering, erosion, and deposition is constantly changing earth’s surface because the system is constantly breaking away slowly and transferring little bits of rock, dirt or other objects to different places.

Explanation:

I’ve had this question before.

For an active transport system to transport nutrients into a cell, the following conditions must exist:

1. Energy source: Active transport requires an input of energy to move substances against a concentration gradient. This energy can come from ATP hydrolysis, the electrochemical gradient, or the coupling of an exergonic and endergonic reaction.

2. Carrier protein: Active transport systems use a carrier protein to move substances across the cell membrane. The carrier protein undergoes a conformational change to transport the substrate across the membrane.

3. Specificity: Active transport systems exhibit specificity for a particular substrate. This specificity is due to the shape and charge of the carrier protein and the substrate.

4. Saturation: Active transport systems exhibit saturation kinetics. This means that the rate of transport is limited by the number of available carrier proteins.

5. Competition: Active transport systems may be subject to competitive inhibition, where a structurally similar molecule inhibits the transport of the desired substrate.

Overall, active transport systems are essential for the uptake of essential nutrients, ions, and molecules into the cell against their concentration gradient.

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The actions listed can be classified into two phases of pulmonary ventilation: inhalation and exhalation.

During inhalation, the diaphragm moves inferiorly and the external intercostal muscles contract, causing the ribs to move up and out. This results in an increase in the width and volume of the thorax. This allows air to flow into the lungs. Therefore, the following actions are associated with inhalation: diaphragm moves inferiorly, external intercostals contract, and thorax increases in volume.

During exhalation, the diaphragm moves superiorly, the internal intercostal muscles contract, and the ribs move down and in. This results in a decrease in the width and volume of the thorax, which forces air out of the lungs. Therefore, the following actions are associated with exhalation: diaphragm moves superiorly, internal intercostals contract, and ribs move down and in.

The actions of external intercostals contracting, diaphragm moving superiorly, and internal intercostals contracting are associated with exhalation. The actions of diaphragm moving inferiorly, external intercostals contracting, and thorax increasing in volume are associated with inhalation.

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Answer:

Sugars provide living things with energy and act as substances used for structure. When sugars are broken down in the mitochondria, they can power cell machinery to create the energy-rich compound called ATP (adenosine triphosphate).

Explanation:

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Crown me as brainliest:)

Answer:

Covalent

Explanation:

A covalent bond, also called a molecular bond, is a chemical bond that involves the sharing of electron pairs between atoms.

Answer: A

Explanation:

Answer: echo sounding

Explanation:

Answer:

something that is a system of mapping the ocean is "echo sounding"

Answer:

why don't you want people to send you links?

Answer:

False

Explanation:

Two events cannot happen at the same time if they are mutually exclusive or discrete. So, the given statement is False.

The events are not autonomous because they are disjointed. When two events are independent, the probability of one is unaffected by the occurrence or non-occurrence of the other. On the other hand, different events do not have equal outcomes, although this does not always mean independence. Events that are mutually exclusive are called disjoint events because they cannot happen at the same time. In other words, if one thing happens, it cannot happen at the same time as another thing.

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Genes are fragments of DNA that contains the information needed (nucleotides) to build up proteins through the action of different molecules, like RNA that transcribe that information which eventuallyise transducedinto amino acids in the ribosomes of the cell to form polypeptides or proteinss The correct answer then is the first one: proteins..

Transcription and translation are processes that happens in both prokaryotes and eukaryotes, but in eukaryotic cells they take place in different sites than in prokaryotic cells. Therefore, C is incorrect.

In eukaryotic cells, the mRNA is extensively processed before it is ready to be translated, not in prokaryotic cells. Therefore, D is incorrect as well.

In eukaryotic cells, transcription and translation are separate processes, transcription takes place in the nucleus and translation takes place in the cytoplasm. In prokaryotic cells, transcription and translation both takes place in the cytoplasm, being a continuous process. Therefore, A is incorrect, E is wrong too and the correct answer is B. Transcription and translation are continuous processes in prokaryotes but not eukaryotes.