L Pretest Unit 4
than this trilobite fossil?
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PARLA
A 18
B. 4​

Answer:

ribsomes makes proteins needed by the cell

Explanation:

Answer:

The correct answer is Tectonic plate movement is a long-term environmental change.

Explanation:

When tectonic plates in the earth started to move, this process helped the planet to evolve and to shape the continents as exist today.

Different investigation teams have discovered that plates move approximately 2.5 centimeters per year. This movement is the key to the evolution of life and the development of the planet. This slow process involves mountain formation, rocks exposure, and chemical reactions that could stabilize the temperature on the earth´s surface for millions of years. And this stable weather is essential for the evolution of life. Plates movement carries carbon inside and outside of the planet, regulating the amount of carbon dioxide in the atmosphere (greenhouse effect). In this way, it can regulate the temperature. This regulation influence in precipitations,  chemical reactions that involve carbon release and minerals such as calcium, the water flow, volcanic eruptions, among other events. Plates tectonic is also responsible for life, as weathering and mineralization of the rocks release elements and nutrients that are necessary for the life of different organisms.    

So, up to this point, we can say that tectonic plates movement can not be prevented with planning, it does cause environmental change by regulating temperature, and hence it affects organisms.

There are short term effects and long term effects provoked by tectonic plates movement. Earthquakes are examples of short term effects, while mountain formation, ocean formation and, clime regulation are examples of long term changes.

Plates tectonic movement is a very slow process, that might last many years. The Andes formation, for example, started approximately 200 years ago, and these mountains are still rising. The subduction process has not finished as the plates are still moving.  

Answer:

its D

Explanation:

Answer:

A. dog chasing its tail

Answer:

D

Explanation:

One who arrives first has the best chance for success, 

Answer:

A. necklace

Explanation:

Necklace  is most likely made from both metals and gemstones.

A necklace might be a straightforward chain made of gold or silver, a string of beads or diamonds, or a pendant suspended from a rope. It qualifies as a necklace as long as it is worn around the neck.

Unless you are a professional or amateur geologist—or perhaps you earned a merit badge studying them as a scout—you probably won't be able to explain the differences between these four hard natural materials: minerals, rocks, gemstones, and crystals.

The different types of necklace are chocker, Matinee and opera. Long and functional, opera length necklaces. The necklace should hang below the bust when worn as a single strand.

Therefore, Necklace  is most likely made from both metals and gemstones.

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Answer:

Choice A

Explanation: This is because the main purpose of the cell cycle is to create new cells for the organism via mitosis or meiosis.

The cell cycle illustrates the procedures, which occurs as a cell produces new cells.

It refers to a series of events, which occurs in a cell as it grows and differentiates.

A cell devotes majority of its time in the phase known as interphase, and during this time it develops, divides its chromosomes, and prepares for the division.

After that the cell leaves interphase, and goes through the process of mitosis, and completes the process of division.

It can be said that the prime task of cell division is to produce novel cells.

Thus, the correct answer is option A, that is, forms new cells.

Find out more information about cell cycle here:

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Answer:

some species have chloroplasts

Explanation:

Answer:

Dna molecule

Explanation:

Answer: Plant cell.

Explanation: Robert Hooke first studied cork cells which were a type of plant material.

Answer:

D. Microtubules

Explanation:

Microtubules are made of proteins (largely) that make up a cell's cytoskeleton, which provides the internal support framework for the cell.

The correct option is, (D) microtubules.

Hence, microtubules is used as cellular support for cells and unicellular organisms.

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Answer:increase

Explanation:

Answer:

The rate would increase

Explanation:

the answer would be in the nucleus

Answer:

Bubbles in the water is the air that was displaced by water and leaving the surface of water

Answer:

Deuteromycotes

Explanation:

Kingdom Fungi consist of eukaryotic organisms grouped into 3 phyla, with one group that doesn't fit into any of the grouped three. Each group of fungi were classified into phylum based on their reproductive life cycle. The three phyla are Zygomycotes, Ascomycotes, Basidiomycotes.

Zygomycotes produce their spores by meiosis in a structure called Zygosporangium. Ascomycotes produce their spores via meiosis in ascus (sac-like). Basidiomycotes produce their own spores via meiosis in club-like basidium.

However, a fourth group exists that has no known sexual reproductive structure (meiospores), instead it is known to reproduce asexually via mitospores. This group is called DEUTEROMYCOTES or commonly known as FUNGI IMPERFECTI. It is a group of miscellaneous fungi that doesn't fit into the classification basis of the other three phyla.

Answer:

The renewal of a forest after a fire: The fire itself destroys a majority of different types of trees and plant life. Because seeds and roots and other plant and tree parts remain in and on the soil, gradually the plants and trees begin to grow again and eventually returns to the state of the original ecosystem.

The renewal of a crop after harvesting: Without new seeds being planted, the crop can regenerate the following year due to the plants and seeds that remained after harvesting.

A forest renews after logging: Lots of trees were chopped down by loggers to create building materials. Over time, trees grow in and the area returns to its previous state.

A volcanic eruption: In an area where a volcano erupts, lava may cause some damage to the plant and tree life. Over a span of years, however, if there was land that had been affected by the eruption but not necessarily covered in new volcanic rock, the seeds and plant parts and roots in the soil could renew.

On the island of Lawahii, several centuries ago, a fire erupted that caused the destruction of all plants and vegetation. Many years later, the plants and vegetation had grown back in, as the nutrients, seeds and soil remained.

Renewal after disease: A plant population can be very negatively affected by a variety of infectious plant diseases. If the entire population dies, but the soil and roots remain, it is possible for secondary succession to occur and for the population of those plants to to return.

A flood can ruin farmlands. However, because the soil remains after the waters recede, over the course of many years a natural secondary succession can occur and the vegetation that had previously grown there can grow again.

Plants can be very susceptible to attack from pests, particularly if there is an overpopulation of those pests. When this occurs, the plant population in one area can be completely destroyed. However, when the pest overpopulation is resolved, the plants are able to live again and thrive in the soil in which they previously had lived.

Potato scab is a tuber disease that grows on potatoes. If this disease affects a large amount of potatoes, the potatoes may not grow or may be harvested and thrown away. Over time, once the disease has been eradicated, healthy potatoes can grow again.

And also human activities can harm the environment and cause secondary secession.

Explanation:

because it’s true. source: https://examples.yourdictionary.com/examples-of-secondary-succession.html

Answer: XHXh (Note: the H's are superscripts.)

Explanation:

Hemophilia is a sex-linked recessive trait which means that the males having one altered copy of the gene is enough to cause the medical condition( as they have only one X chromosomes and females have two)

In this case the genotype of father and son is such that they are affected by hemophilia.The son has mother's X chromosome and father's Y chromosome.

XhY is the genotype of father and son. As mother would be heterozygous because she is not affected, her genotype will be XHXh.

Answer:

Explanation:

1) d

2) a

3) b

4) b

5) c

6) a

7) a

8) d

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Answer:

Option A

Explanation:

The primary and Secondary structure are essential and present in all proteins and also include tertiary.

The primary structure is the amino acid sequence of the protein. This is the basic part of the protein.

The secondary structure are local folded structures that form within a polypeptide as a result of a couple of interactions between atoms of the backbone giving rise to the alpha helix and the beta pleated sheets in protein structures.

Answer:

New virgin queens develop in enlarged cells through differential feeding of royal jelly by workers. When the existing queen ages or dies or the colony becomes very large, a new queen is raised by the worker bees. When the hive is too large, the old queen will take half the colony with her in a swarm.

Explanation:

Answer:

The weather change as the earth warms because since,20th century due to human activities, particularly fossil-fuel burning which increases heat- trapping greenhouse gas levels in Earth's atmosphere.

Answer:Either homosexuailty or Male and Female?

Explanation:

The ecological effects of acid rain are most clearly seen in aquatic environments, such as streams, lakes, and marshes where it can be harmful to fish and other wildlife. As it flows through the soil, acidic rain water can leach aluminum from soil clay particles and then flow into streams and lakes. The more acid that is introduced to the ecosystem, the more aluminum is released, die of biodiversity in environment and other organism that supports decomposition of material

Answer:

Explanation:

Circular and yellow seeds are overwhelming and wrinkled and green seeds are passive. It is vital to keep in mind that resective characteristics are as it were displayed when the sibling has two passive alleles for those characteristic, in the event that the descendant includes a latent allele and a overwhelming allele, the characteristic that will be presented is the overwhelming one. For this reason, able to say that a cross between RRYY x RrYy plants, would not create any descendant with wrinkled and yellow seeds. Typically since, the descendant of a crossing, must show an allele of each parent. One parent as it were has overwhelming alleles (RRYY), so able to say that all descendant will get 1 overwhelming allele for color and a overwhelming allele for seed surface, anticipating the sibling from communicating latent characteristics.

Answer:

0%

Explanation:

Edge

Answer:

spears

Explanation:

Answer:

They are in equilibrium

Explanation:

This is because they compete for resources such as food,water,mates e.t.c. hence only the fittest survive.Also the organisms that die are replaced by newborn ones.An ecosystem can support a specific number of organisms without depleting its resources.

Answer:

1, 2 and 3

(1) Translation always begins with an AUG start codon.

(2) The start codon establishes the reading frame of mRNA.

(3) The mRNA molecule is read one codon at a time until a stop codon is reached.

Explanation:

Translation is the second stage of the gene expression process which involves the synthesis of amino acid sequence (protein) from an mRNA transcript. During translation, the nucleotide sequence are read in a group of three nucleotides called CODON. The codon are found on the mRNA molecule and each one specifies an amino acid.

Translation starts with a start codon, which is AUG coding for methionine. Due to the fact that translation will start with an AUG codon, it automatically sets the reading frame of the mRNA molecule i.e. the pattern the mRNa will be read during translation. The start codon (AUG) determines how the reading frame will progress considering it is read first or initiates the translation process.

Translation continues in the RIBOSOME, where each codon is read by the tRNA one at a time until a stop codon is encountered. A stop codon signals the end of the translation process, and releases the peptide sequence. The mRNA stop CODON specifies no amino acid and are UAG, UAA, and UGA.

Answer:

secondary succession happens more often because it occurs after some kind of distribution that still leaves the soil intact (mudslide,bulldozing,shoveling,or scraping off an area)

Explanation:

Answer:

Secondary succession

Explanation:

Succession may be defined as the change in the biological species community with time. Primary succession and secondary succession are two main types of succession.

Secondary succession is the succession that occurs most often in nature because this succession occurs when the climax community is disturbed by the natural and man made disturbances. The secondary succession has almost every thing to start the new succession again in the destroyed land.\

Thus, the correct answer is secondary succession.

Answer:

In the picture provided.

Answer:

I would say polar beats

Explanation:

As polar bears actually don't have to get in water..

Not sure ok sorry