I need help with this please.

Answer:

based on the mass of the star

Answer:

6. antibodies and DNA for the question no.6

Absolute dating is the process of determining an age on a specified time scale in archaeology and geology. Some scientists prefer the terms chronometric or calendar dating, as use of the word "absolute" implies an unwarranted certainty and precision. Absolute dating provides a numerical age or range in contrast with relative dating which places events in order without any measure of the age between events. In archeology, absolute dating is usually based on the physical, chemical, and life properties of the materials of artifacts, buildings, or other items that have been modified by humans and by historical associations with materials with known dates. Techniques include tree rings in timbers, radiocarbon dating of wood or bones, and trapped charge dating methods such as thermoluminescence dating of glazed ceramics. Coins found in excavations may have their production date written on them, or their may be written records describing the coin and when it was used, allowing the site to be associated with a particular calendar year.

Answer: The products are spermatozoa that each have a head, midpiece and tail.

Explanation:

The spermatogenesis can be defined as the process of gamete production in human males. It takes place in the testes in males. In this process the spermatids are produced which are four in number through reductional cell division called as meiosis. Each spermatid is haploid in number and the genetic material present in each is diverse as a result siblings are not identical to each other. The spermatozoa is an immature sperm cell which develops head, middle piece and tail. But it is not a precursor of production of sperm cells via cell division.

Answer:

why an athlete would need to be concerned about twitches or contractions is because, whenever they perform, and such thing happens, it will most likely distract the athlete, and cause the athlete doing his/her performance to not be as good, and may lead to failure, for example, when someone is running very fast for a sprinting race, and he has a contraction in his leg it will cause him to react by showing signs of pain by slowing down or even tripping and falling, causing him to lose the race.

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This is called an ion. :)

Answer:

im like 99% sure its D

Explanation:

im sorry if its wrong :(

Answer:

A person standing on the ground is barely affected by surface gravity

Hemodialysis uses a machine to pull blood out of the body, filter it, and pump the clean blood back into the body again. The actual filtering happens in a part of the machine called a dialyzer, or artificial kidney. The dialyzer has two parts. One part is for blood.

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Answer:

Cytokinesis in eukaryotic animal cells do not have a cell wall, it occurs through a strangulation process carried out from the plasma membrane, this process is called segmentation. Plant cells are characterized by cytokinesis based on septate, since the cell wall does not allow strangulation.

Explanation:

Cytokinesis means: cell division, it is a cellular process parallel to mitosis whose purpose is the division of the stem cell's cytoplasm between daughter cells. In animal cells, cytokinesis occurs by cleavage. At the end of anaphase and during telophase, the central part of the cell narrows, forming the segmentation groove, which deepens (strangulation). Plant cells, as they lack centrosomes, will form the achromatic spindle from two polar caps. In this case, cytokinesis does not occur by strangulation, but a cell wall is formed between the two daughter cells. This septum, called a fragmoplast, is formed from vesicles from the Golgi apparatus.

The major difference during cytokinesis in eukaryotes with or without a cell

wall is in the formation of cell plate in cells with cell wall while in animal

cells cytokinesis occurs through the formation of a cleavage furrow.

Cytokinesis is the process of cell division in which the cytoplasm divides

into two. Plants have cell walls while animals lack cell walls.

Animal and plant cells form cleavage furrow and cell plate respectively

which aids division into two equal parts.

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Answer:

Genetics

Explanation:

A trait is a specific characteristic of an organism. Traits can be determined by genes or the environment, or more commonly by interactions between them. The genetic contribution to a trait is called the genotype. The outward expression of the genotype is called the phenotype.

Answer:

B

Explanation:

Answer: B

Explanation: Managing emotions is actually healthy, being able to control how you feel about a certain topic will make life much easier. Practicing this will only help in the future. Suppressing emotions will only stress you out more. Giving into emotions is obviously going in the wrong direction, don't give up.

Answer:

viton

Explanation:

viton

Answer:

Improving food storage facilities

Answer:

The messages carried by neurons are called nerve impulses. Nerve impulses can travel very quickly because they are electrical impulses. ... The sheath covers the axon, like the plastic covering on an electrical wire, and allows nerve impulses to travel faster along the axon.

Answer:

The messages carried by neurons are called nerve impulses. Nerve impulses can travel very quickly because they are electrical impulses. ... The sheath covers the axon, like the plastic covering on an electrical wire, and allows nerve impulses to travel faster along the axon.

Answer:

This cumbersome trait significantly decreases the male's chances of survival. ... natural selection: that is, that organisms better adapted to their environment would benefit from ... the individual's reproductive success, even at the expense of their survival (Darwin 1871). ... A successful male can potentially sire many offspring.

Explanation:

The beneficial trait increase the survival and potential reproductive success of the organism as they help organism to thrive in their unfavorable changing environment.

Hence, beneficial traits increase the rate of survival and reproduction of organisms.

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Answer:  Photosynthesis

Explanation: takes in the carbon dioxide produced by all breathing organisms and reintroduces oxygen into the atmosphere. Photosynthesis is the process used by plants, algae and certain bacteria to harness energy from sunlight and turn it into chemical energy.

Answer:

photosynthesis

Explanation:

hope it helps. if you need an explanation on what that is let me know!

Answer:

B would be the answer

Explanation:

Answer:

Scanning electron microscope and electron microscope.

Explanation:

Scanning electron microscope is a type of microscope which can produced the image of cilia. Electron microscope  is a type of microscope would be the best for studying cilia because it has higher magnification power i. e.  10,000,000x, which able us to study different parts of cilia so we can say that electron microscope is the right choice for studying cilia.

Answer:

well the chloroplasts are the part of the cell that make photosynthesis happen

Answer:

light energy, water, carbon dioxide, and chlorophyll.

Explanation:

Answer:

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Explanation:

that means i do not know what that means

During translation protein synthesis won't stop when it should so amino acids will continue to be placed and the peptide will be bigger.

Answer:

In genetics, a point-nonsense mutation is a point mutation in a sequence of DNA that results in a premature stop codon, or a point-nonsense codon in the transcribed mRNA, and in a truncated, incomplete, and usually nonfunctional protein product.

Explanation:

abrasion, pressure release, thermal expansion and contraction and crystal growth.

Answer:

solar system

Explanation:

Answer:

More than one t Type of mineral

Answer:

1)aggregate

2)color

3)mineral

Explanation:

Answer:

As is true for many fields of research, cell biology has always been ... Thanks to these advances we now have access to microscopes and ... You might then also realize that the new method, at least on paper, may have additional applications. ... which makes the technology attractive to yet more scientists.

Explanation:

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With the creation of the microscope, humans were able to observe plant and animal cells, and as technology advanced, scientists were able to learn more about these various types of cells.

A microscope is a device that can be used to examine small objects, including cells. The image of an object is magnified in the microscope by at least one lens.

In most cases, the light is focused on the sample by passing it through a condenser.

After passing through the sample, the light passes through the objective lens, which magnifies the image of the sample, and then to the oculars, where the enlarged image is viewed.

The discovery of the green fluorescent protein (GFP), the development of increasingly sophisticated microscopes, and the development of in vitro assays that faithfully reproduce cellular functions are just a few examples of technological advances that have fueled many areas of cell biology.

Thus, it can be concluded that the advancements in technology help scientists better understand process of cell division.

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