Biology College

Pure substances can be classified as or compounds. Answer here

Answers

Answer 1

Pure substance can be classified as or compounds?

Answer: elements

Answer 2

Answer:

Elements

hope it helps....

Related Questions

Which of the following factors is most likely to decrease the stability of an ecosystem?
A
The removal of a species
B
An increase in plant biodiversity
C
The removal of an individual animal
D
An increase in animal biodiversity

Answers

Answer:

Explanation:

The removal of a species can reduce the food source of another species, which can cause that species to slowly die out, where other animals that consume the dying species start dying out... ect.

So it decreases the biodiversity which can mess with populations.

If the species is a herbivore, it could cause the plants that are eaten by that herbivore to get out of control in population, which can fight for sunlight and resources with other species causing ecosystem collapse.

In an ecosystem, the removal of a species can decrease the stability. Thus, option A is correct.

What are the biotic factors of an ecosystem ?

Biotic factors are the basic unit of ecosystem where the living beings interact with each other and their environment.

There are two components of an ecosystem such as biotic and abiotic components, include distribution of energy in our environment.

Biotic components can be classified into autotrophs, heterotrophs and decomposers based on mode of nutrition.

Autotrophs are producer such as plants as they produce food through the process of photosynthesis.

Heterotrophs are the consumer depend on producer for their nutrient, which is further classified into three categories.

Primary consumers are herbivores rely on producers for food while secondary consumers depend on primary consumers. They can be carnivores or omnivores.

Tertiary consumers depend on secondary consumers for food. some quaternary consumers are also seen in some food chains.

Decomposers include saprophytes such as fungi and bacteria which lie on decaying organic matter and essential for the ecosystem

Hence, option A is correct.

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What are some examples of disturbances that lead to secondary succession

Answers

Answer:

Secondary succession occurs when the severity of disturbance is insufficient to remove all the existing vegetation and soil from a site. Many different kinds of disturbances, such as fire, flooding, windstorms, and human activities (e.g., logging of forests) can initiate secondary succession.

Explanation:

Which of the following is a central idea of cell theory? (5 points)
All living things are made of at least two cells.
O Cells cannot live alone as single organisms.
O All living things have five or more types of cells.
Cells are the basic unit of structure and function in living things.

Answers

it’s cells are the basic unit of structure and function in living things

A healthy, stable ecosystem is one in which many kinds of plants and animals -

A) Lack what they need to live

B) Produce only a few offspring

C) Are protected from all diseases

D) Are able to meet their needs

Answers

Answer:

D) Are able to meet all their needs

Explanation:

the description sounds like a pretty healthy ecosystem to me

Planets that orbit the sun is a gas giant, terrestrial, or dwarf planet.

Answers

Answer:

Terrestrial i think:)

Explanation:

A solar system is made up of a star and the planets that orbit it. Our solar system’s four inner planets—Mercury, Venus, Earth, and Mars—are closest to the sun. They are called terrestrial planets, and are largely composed of rock and metal. The four outer planets—Jupiter, Saturn, Uranus, and Neptune—are gas giants.

it's known that only 9 planets orbit the Sun. There have been many solar system objects that have been discovered recently, but none of them have been classified as planets.

Gas dwarf A low-mass planet composed primarily of hydrogen and helium.

Gas giant A massive planet composed primarily of hydrogen and helium.

If the fatty acid palmitate (16:0) radiolabeled with 14C in C-16 were metabolized by mammalian cells under anaerobic conditions, what compounds would be tagged with 14C and in what position

Answers

The options are missing from the question,

Below are the options.

A) Tag would be CO2

B) Acetate in C-2

C) 1 uvate in C-3

D) pyruvate in C-3

E) oxaloacetate on C-1

F) palmitate in C-16

The correct answer to the question is option B

ACETATE IN C-2

If palmitate (16:0) which is a fatty acid radiolabeled with 14C in C-16, when metabolized under anaerobic conditions by mammalian cells,the compound that will be tagged with 14C will be ACETATE and the position it will be will be C-2

In an anaerobic condition, anaerobic CoA which is formed after the oxidation of fatty acid will now move into the Kreb cycle as a result of oxygen deficiency, taking the form of acetate,it will enter cytosol and will further be used for other purposes.

What is one of the ways we can conserve?
A. use more nonrenewable resources
B. use products made with plants or animals from the rainforest
C. use recycling centers

Answers

It’s either A or C not sure tho

because using recycling centers can help things be reused.

what genetic information can be obtained from a Punnett square? What genetic information cannot be obtained from a Punnett square?

Answers

ANSWER.》 A Punnett square determines all of the ways in which alleles can combine. It may be used to predict ratios of offspring genotypes and phenotypes. Punnett squares cannot determine actual outcomes.

identify the remaining processes and componets of the carbon cycle

Answers

Answer:

Carbon is one of the most vital element for the existence of life. The carbon cycle is the one in which the carbon is transferred from the atmosphere to the living organisms i.e both plants, animals and to the earth and again back into the atmosphere, thereby maintaining a cyclicity.

Explanation:

A comet is a

meteoroid that travels through Earth’s atmosphere and hits the surface.

meteoroid that burns up in Earth’s atmosphere, producing a streak of light.

small, rocky object that orbits the Sun and is usually found in a belt between the orbits of Mars and Jupiter.

small object made of ice and dust that orbits the Sun and forms a coma as it approaches the Sun.

Answers

D) small object made of ice and dust that orbits the Sun and forms a coma as it approaches the Sun.

What are the adaptations that Embryophytes have for life on land?

Answers

Answer:

Explanation:

"Plants have evolved several adaptations to life on land, including embryo retention, a cuticle, stomata, and vascular tissue."

PLEASE HELP WILL GIVE CROWN

Answers

Answer:

C E A hope it helps

Explanation:

C e and a I’m pretty sure make sure to tell me if I’m right or wrong

The
of a bacterium controls transport of compounds into and out of the cell.
Select one:
O plasma membrane
O cell wall
O Golgi apparatus
O electron transport chain

Answers

It should be cell wall

The discovery of cells was made possible by the invention of microscopes. Today, several different types of microscopes are used by scientists. Which of the following best describes transmission electron microscopes? A.Transmission microscopes produce images of cell surfaces. B.Transmission microscopes produce three-dimensional images of cells. C.Transmission microscopes produce highly detailed images of cell structures. D.Transmission microscopes produce images of living cells.

Answers

Answer:

Explanation:

The statement that best describes transmission electron microscopes is:

C.Transmission microscopes produce highly detailed images of cell structures

A microscope is the instrument that is used to view microorganism and magnify them so that they cab be visible to the human eyes.

The transmission electron microscopes are those micrpsccp[es wjich makes use of a particle beam in order to produce a well magnified image and can magnify an object uo to two million times.

As a result of this, they produce highly detailed images of cell structures.

Therefore, the correct answer is option C

Answers

Answer:

The answer is A

Explanation:

The correct answer is A !

Which part of scientific design occurs when an experiment is conducted by more than one scientist to determine the validity of results?
Replication
Research
Trials
Variables
The answer is: Trials.

Answers

Trials part of scientific design occurs when an experiment is conducted by more than one scientist to determine the validity of results. Thus the correct option is C.

What is trail?

Researchers gather information, group volunteers according to broad characteristics, and compare changes over time.

Repeated trials are when researchers do a measurement multiple times - at least three, commonly five, but the more the better. When they measure something once, the chance that the number he get is accurate is much lower. But if researcher measure it several times, then he can take an average of those numbers and get a result that is much closer to the truth.

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Answer:

Explanation:

3. Name two organelles in a plant cell that contain their own genetic material and
ribosome.

Answers

Answer:

Both, mitochondria and plastid possess their own genetic material and ribosomes.

Explanation:

Analysis of mitochondrial DNA can answer interesting and important questions. For which of the questions would analyzing mitochondrial DNA be futile?

Answers

Answer:

to identify the father of the individual

Explanation:

Mitochondrial DNA (mtDNA) is the circular DNA molecule found in mitochondria, which is an organelle responsible for cell respiration by converting chemical energy from foods to ATP by the process of cellular respiration. In humans, mtDNA consists of about 16,500 base pairs (bp) and encodes for 22 tRNAs, 2 rRNAs and 13 proteins. In most of the species, including humans, mtDNA is inherited from the mother (i.e., it is maternally inherited), and therefore mtDNA cannot be used to trace the patrilineal ancestry of a given person or population.

the rain shadow effect is caused by

Answers

A rain shadow is a patch of land that has been forced to become a desert because mountain ranges blocked all plant-growing, rainy weather. On one side of the mountain, wet weather systems drop rain and snow. On the other side of the mountain—the rain shadow side—all that precipitation is blocked.

Using the above graph, look at the solid blue trendline. What is that telling us?

Group of answer choices

A. The deer population is highly unstable.

B. The deer population is reduced after the introduction of wolves.

C. The deer population and the wolf population are the same.

D. The deer population changes with the seasons.