The study of chemistry begins with the basic unit of matter, the ?
a. cell
b. atom
c. nucleus
d. enzyme

Answers

Answer 1

Answer:

B

Explanation:

Chemistry starts with the atom as this is the building block of all chemistry.

The cell, nucleus, and enzyme are all part of biology and not chemistry (at this level at least)

Answer 2

Answer:

B. an atom

Explanation:

Hope that helps!


Related Questions

all of the following conditions helps preserve organisms as fossils EXCEPT A)quick burial by sediments B) hard parts. C) protection from scavengers. D) activities of microorganisms

Answers

Answer:

D) activities of microorganisms

Explanation:

CORRECT

What 3 systems get put to work when feeding and how does each one work when you eat?

Answers

Answer:Digestive and muscular systems would be working together to chew food and work it down to the stomach to be digested. The digestive system and circulatory circulatory system would be working together to break food down and move nutrients to cells. The nervous system decides what to eat and when to chew.

Explanation:

natural selection is an example of a mechanism of evolution. does this mechanism produce a change in individuals or populations? explain

Answers

Natural selection refers to the procedure where the species better amended to their surrounding appear to survive and generate more offspring. Natural selection refers to one of the mechanisms that make modifications in the frequencies of genes in populations and thus, it is the mechanism of evolutionary change.

However, the phenomenon of genetic drift and natural selection cannot take place unless and until there is a genetic variation, that is unless some individuals are genetically distinct from others.

How does the process of DNA replication impact mutations in an individual?
a All DNA replication stops when there is a mutation so the mutation wont hurt the individual
b Replication only produces new DNA strands so the old stand with the mutation is destroyed

c Since replication keeps the old strands as templates mutations maybe earned into future stands
d Mutations are often lost since the cell will die doring the replication process if the DNA is mutatie.​

Answers

Answer: A mutation is a change that occurs in our DNA sequence, either due to mistakes when the DNA is copied or as the result of environmental factors such as UV light and cigarette smoke. Mutations can occur during DNA replication if errors are made and not corrected in time.

Explanation:

provides protection and a space to move and breathe *

Umbilical cord
Amniotic sac
Amniotic fluid
placenta

Answers

amniotic sac is the answer <3
I think it’s B but I’m not fully sure

Under identical conditions, which surface will reflect the greatest amount of insolation?

Answers

Answer:

Earth's surface

Explanation:

Will be receiving the greatest amount of isolation

Organize the steps of primary succession to describe how the empty rock
landscape transformed into mature forest communities.
First
1
Rock is broken down and converted into soil
N
Lichen and other pioneer species grown on the rocks
3
Small pine trees grow in the soil
4
Grasses and flowering plants grow in the soil
5
The glacier retreated, leaving barren only rock
6
Shrubs and small trees grow in the soil
7
::::
A climax community develops
Last

Answers

Answer:

A climax community develops

The glacier retreated, leaving barren only rock

Lichen and other pioneer species grown on the rocks

Rock is broken down and converted into soil

Grasses and flowering plants grow in the soil

Shrubs and small trees grow in the soil

Small pine trees grow in the soil

Explanation:

hope its correct can i get brainliest i spend a lot of time on it

21.As mentioned in the video, the environment can also affect an organism's traits. The example of nourishment was used in the case for Spike, as this could affect his growth and size. This can also occur in humans. UV light was not mentioned in the video. How could UV light potentially affect an organism's trait? Provide one example.

Answers

Answer:

UV light can modify the DNA of a human being, provoking mutations that affect the traits. For example, exposure to the sun's UV rays affects the DNA of the skin cells, causing mutations that can lead to cancer.

Explanation:

An environmental factor that can affect humans traits is the exposure to UV light that the sun radiates. The DNA in our skin cells absorbs the UV rays. As a result, the DNA can suffer modifications that result in skin cancer. Also, the absorption of UV rays causes wrinkles since cell components are affected due to the accumulation of UV light.

Answer: UV light can modify the DNA of a human being, provoking mutations that affect the traits. For example, exposure to the sun's UV rays affects the DNA of the skin cells, causing mutations that can lead to cancer.

Explanation: An environmental factor that can affect humans traits is the exposure to UV light that the sun radiates. The DNA in our skin cells absorbs the UV rays. As a result, the DNA can suffer modifications that result in skin cancer. Also, the absorption of UV rays causes wrinkles since cell components are affected due to the accumulation of UV light.

How does reproductive isolation affect the gene pools of two or more populations?

Answers

How does reproductive isolation affect the gene pools of two or more populations? ... These changes may prevent individuals from each population from being able to mate successfully with each other. If this happens, the two populations are considered to be distinct species. I hope this answer helps you out. Have a great rest of your day. ☺️
These changes can prevent individuals from being able to successfully mate with one another from each population. If this occurs, it is considered that the two populations are distinct species.

2. Jellyfish are one of the oldest species on Earth. In what time period did they first appear? A. Precambrian Time B. Paleozoic Era C. Mesozoic Era D. Cenozoic Era​

Answers

Answer:

A. Precambrian Time

Explanation:

Fossil evidence of jellyfish dates back to the Cambrian Period, 500 million years ago.

HELPPPPPP.......30 points DONT ANSWER IF YOU'RE NOT GOING TO HELP I WILL REPORT YOU
The image shows a lake, a factory, a cloud in the sky, a cow, dead organisms, a tree, and the sun. An arrow from the sun to the tree is labeled A. An arrow from the sky to the tree is labeled B. The sky is labeled C above the cloud. The letter D is in the air and an arrow points from it down to dead organisms. An arrow points from dead organisms to the ground labeled E. An arrow points from the cow into to the sky labeled F. An arrow points from the factory to the sky labeled G. An arrow from the sky to the lake is labeled H above the lake.


Using the diagram above, match the description to the corresponding location in the carbon cycle model. Provide the letter only.

Carbon dioxide is converted to sugar used for food.
Carbon trapped in fossil fuels is converted to carbon dioxide.
Organic carbon is converted to fossil fuels.
Carbon dioxide is converted to carbonates.
Sugar is broken down and converted to carbon dioxide.
Location ________
Location ________
Location ________
Location ________
Location ________

Answers

Answer:

A - 1. Carbon dioxide is converted to sugar used for food (this is process of phosynthesis).

G - 2. Carbon trapped in fossil fuels is converted to carbon dioxide (this is combustion of fuel).

E - 3. Organic carbon is converted to fossil fuels.

H - 4. Carbon dioxide is converted to carbonates.

F - 5. Sugar is broken down and converted to carbon dioxide (this is breathing).

Explanation:

hope this helps

Which countries allow designer babies?

Answers

Answer:

Thus, Sweden became one of four countries that allow the production of designer babies. The others are Belgium, the United Kingdom, and the United States. In Spain, the first designer baby was born in Tenerife in 2005, although she was produced in the Chicago Reproductive Genetics Unit in 2004.

Explanation:

Is the ocean a carbon sink or a carbon source

Answers

Answer:

Explanation:

The Carbon CycleChanges to The Carbon CycleThe Ocean and CarbonBiological Pump

The ocean plays an important part in the carbon cycle. Overall, the ocean is called a carbon ‘sink’ because it takes up more carbon from the atmosphere than it gives up.Carbon dioxide from the atmosphere dissolves in the surface waters of the ocean. Some of the carbon dioxide stays as dissolved gas, but much of it gets turned into other things. Photosynthesis by tiny marine plants (phytoplankton) in the sunlit surface waters turns the carbon into organic matter

the ocean is a carbon sink

PLEASE HELP!!!
List three factors that affect soil formation and explain “how” in 2 sentences each!

Answers

Parent material. Few soils weather directly from the underlying rocks. ...Climate. Soils vary, depending on the climate. ...Topography. Slope and aspect affect the moisture and temperature of soil. ...Biological factors. Plants, animals, micro-organisms, and humans affect soil formation. __________________FOLLOW ME

frank has type A blood (AA or AO) and margarita has type B (BB or BO) blood. They have a new baby. Vinnie, with type O blood. Is this possible or should frank accuse margarita of cheating?

Answers

Answer:

It is technically possible, if and only if, both parents have AO and BO blood.

Explanation:

the only way (most of the time) a child can get O blood is if both genes accepted by the parents are O.  That would mean both parents would have to have O recessive genes.

Forms across a plant cell during cytokinesis.
A. cleavage furrow
B. pinching in
C. cell plate

Answers

Answer: A. a ring of actin filaments forms at the metaphase plate. The ring contracts, forming a cleavage furrow, which divides the cell in two. In plant cells, Golgi vesicles coalesce at the former metaphase plate, forming a phragmoplast.

Explanation:

hope this helps have a great day❤️❤️❤️

Answer:

ty for helping me now ill help you

a

Explanation:

cytokensis is the physical process of cell division. It divides the cytoplasm of a parental cell into two different daughter cells.

In plants, a cell wall forms. Cytokensis occurs in mitosis and meiosis. The objective for cytokensis is to divide the parent cell into two daughter cells. So cytokensis in plants is when a cell wall forms in between the daughter cells. Plant cells have walls, so they CANNOT divide using a cleavage furrow. A cell plate forms across the cell during telophase.

In animal cells, cleavage furrow forms. This pinches the cell in half and forms two different cells.  

Jill uses a magnet to pick up a nail. Then, she touches the nail to a paper clip and picks up the paper clip. What will most likely happen when she pulls the magnet away from the nail?

The paper clip will stay attached to the nail because the nail is now a permanent magnet.
The paper clip will stay attached to the nail because the paper clip is now a permanent magnet.
The paper clip will fall off of the nail because the nail was only a temporary magnet.
The paper clip will fall off of the nail because the nail is now magnetized in the opposite direction.

Answers

Answer:

C but see below.

Explanation:

e. The paper clip will likely fall off because it wasn't attached to the nail long enough to be magnetized.

The same answer would apply to the nail. It likely was not held onto the magnet long enough to pick up a magnetic force that would be strong enough to overcome the gravitational force pulling on the clip.

Of the four answers you have given us, I would agree with C.  But as I've argued above, the real reason is likely there.

Answer:

C

Explanation:

Edge 2021

2. How do gene splicing and gene therapy differ? How are they alike?

Answers

Gene therapy and gene splicing are separate but linked processes. A new organism can be created by cutting and recombining genetic material from two separate sources, a process known as gene splicing.

What is gene splicing ?

It is a technique that scientists utilise in the lab to develop new organisms with desired features. On the other side, a healthy gene is introduced into the patient's cells during a medical process called gene therapy to treat diseases and disorders.

Gene splicing and gene therapy share certain similarities despite their distinctions. Both procedures entail the modification of genetic material, frequently derived from several sources, in order to produce the desired outcome.

The goal of gene splicing is the development of a new creature or its modification.that of an active organism. Treatment of a disease or disorder is the intended outcome of gene therapy. Both procedures also entail the manipulation of genetic material using specialised methods, such as recombinant DNA technology. Finally, for both methods to be effective, a good understanding of genetics is necessary.

Learn more about  gene splicing at:

https://brainly.com/question/31075704

#SPJ2

A stick insect has body parts that look like sticks and are a similar color to the trees
they live in. How does this help the stick insect to survive?

Answers

Because they can camouflage and hide from other animals trying to eat it

Which type of electromagnetic wave has the lowest frequency?
A. Ultraviolet
B. Visible light
C. Gamma rays
D. Microwaves

Answers

Answer:

D

Explanation:

Answer : D —>microwaves

9. A
is an example of an organism that performs
photosynthesis.

Help plz

Answers

Any plant. You could say a tree. Photosynthesis is process of using light for energy
Photosynthesis is the process that plants do to create there food, so the only organisms that can perform photosynthesis is plants

1. Describe the relationships between the

cell cycle and cell differentiation and

how they maintain complex organisms.

Answers

In multicellular organisms individual cells grow and then divide via a process called mitosis, thereby allowing the organism to grow. Cellular division and differentiation produce and maintain a complex organism, composed of systems of tissues and organs that work together to meet the needs of the whole organism.

(GIVING BRAINLIEST!!)

A model of the water cycle was made by placing a heat lamp over a glass jar half full of water. Which part of the water cycle causes the water level in the jar to drop over time?

A) Collection
B) Condensation
C) Evaporation
D) Precipitation

Answers

A

evaporation.

Explanation:

Answer:

C. Evaporation

Explanation:

Hope this is helpful

Has anyone done this Sexual vs Asexual Reproduction before?

Answers

Answer:

Explanation:yes

Answer: for the genetic variation, the offspring gets a allele from each parent.

Explanation:

Yes

Individuals in a species have genetic variation that can be passed on to their offspring

Answers

Answer: Genetic variation within a species can result from a few different sources. Mutations, the changes in the sequences of genes in DNA, are one source of genetic variation. ... As a result, the tree-colored moths are more likely to survive, reproduce, and pass on their genes.

Explanation:

1. Choose the items that are Inferential Statistics. (Check all that apply)
Give the likelihood of data occurring by chance
Include the mean
Summarize the data
Tell you whether to call your mother about your results
Give a measure of statistical significance

Answers

Answer:

A, D, and E is correct

Explanation: I took the test and got this one correct.

The items that are inferential statistics among the options would be:

Give the likelihood of data occurring by chanceTell you whether to call your mother about your resultsGive a measure of statistical significance

This is largely due to the fact that inferential statistics refer to the branch of statistics that draws conclusions from a set of data. It is as opposed to descriptive statistics which focus on summarizing, describing, arranging, and or categorizing data in such a way that trends are shown at a glance.

Statistical parameters such as mean, mode, and median only measures attributes of data relating to the measure of central tendencies. Data summary is purely descriptive

Hence, the items selected are those that are conclusive and not descriptive.

More about types of statistics can be found here: https://brainly.com/question/1135243

If you rescue a snake and give them a home in your house will that cause them to not shed? And why!! Very important. Will mark brainless!!!

Answers

No snakes shed there skin when they grow it will eventually shed

Francis grew some plants for a science experiment. The sketch of his experiment after several days is shown. Which tropism is Francis most likely investigating?

Answers

The correct answer to this open question is the following.

Unfortunately, you did not provide the sketch or the photo that shows what Francis is doing. So we do not know what you are talking about.  

However, trying to help you, we did some deep research and can comment on the following.

If the photo shows a plan under the light of a lamp, moving towards the lamp direction, then tropism is Francis most likely investigating is phototropism.

To better understand the concept, Tropism is the movement of a plant towards the direction of an influence exerted on it. This means that an external factor is introduced in order to make the plant grow through an external influence.

So when we use the term phototropism, this means that the plant responds to the direction of the source of light and grows in that direction. That is what Francis is using in his science experiment.

Answer:

phototropism

Explanation:

if you want an in depth answer, look at the other one, not mine lol! (I attatched the image)

DNA strand: 5' GGC TAG ATC GGA TCA 3
mRNA strand:
Protein (amino acid chain):
Pls help

Answers

mRNA: ccg auc uag ccu agu
Amino acid: pro-ile -stop-pro-ser

A reaction that absorbs energy from the environment a reaction that requires an activation energy a reaction that releases energy into the environment a reaction that does not involve a change in energy

Answers

Answer:

Endothermic reaction

Explanation:

An endothermic reaction is a chemical reaction that takes energy from the atmosphere. It requires activation energy.  An exothermic reaction is the reverse of an endothermic reaction. Reversible reactions are where the compounds will react to the initial reagents.

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