Answer:
c
Explanation:
1. Describe how chemical changes
are
different from physical changes.
Answer:
Physical changes only change the appearance of a substance, not its chemical composition. Chemical changes cause a substance to change into an entirely substance with a new chemical formula.
Explanation:
Answer:
In a physical change the appearance or form of the matter changes but the kind of matter in the substance does not. In a chemical change, the kind of matter changes, and at least one new substance with new properties is formed.
Explanation:
Physical changes are limited to changes that result in a difference in the display without changing the composition.
hope that helped!
on what basis are populations assigned to the same biological species?
Answer: On What Basis Are Populations Assigned To The Same Biological Species? Answer A Very Similar Appearance Being Able To Interbreed And Produce Fertile Offspring Relating To The Environment In The Same Way Sharing A Common Ancestor Having 99% Of Their Genes In Common
Who discovered mercury and what is your source?
Answer: Sumerians
Explanation: www.whodiscoveredit.com/who-discovered-mercury.html
Answer:
Galileo Galilei first discovered mercury my source https://www.nhm.ac.uk/discover/planet-mercury.html#:~:text=Mercury%20is%20one%20of%20the,Galileo%20Galilei%20and%20Thomas%20Harriot. that link
Explanation:
Hope di helps
what is the difference between ribose and deoxyribose
The process of making sugars in the chloroplast is called??
Answer:
Chloroplasts work to convert light energy of the Sun into sugars that can be used by cells. ... The entire process is called photosynthesis and it all depends on the little green chlorophyll molecules in each chloroplast.
Which of the following does not directly cause erosion?
O Ice
OLichen
ОSun light
oChemicals
Answer:
a ice
Explanation:
ice doesnt cause erosion directly
Under the hypothesis of blending inheritance, what color(s) would the offspring of a black cat and a white cat be
Under the hypothesis of blending inheritance, the offspring of a black cat and a white cat would be GREY. This theory is not now accepted.
Blending inheritance is an erroneous theory from the 19th century that proposed that offspring inherit phenotypic traits as 'average values' observed for such traits in their parents.
Mendel's laws of heredity (i.e., the Law of Segregation and the Law of Independent Assortment) showed that blending inheritance is based on erroneous concepts.
Moreover, incomplete dominance is an inheritance pattern different from blending inheritance because incomplete dominance refers to the observation that in certain traits both gene variants or 'alleles' are expressed in heterozygous individuals.
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What is a force that opposes motion through direct contact?
A. Friction
B. Pull
C. Push
Answer: a) Friction
Explanation: Friction is a force that opposes motion. When two objects are in contact, friction is acts in a direction opposite to the motion of the object.
Which aquatic ecosystem is often compared to a tropical rain forest why?
Answer:
Coral reefs is the answer.
Explanation:
Coral reefs are often called the "tropical rainforests of the sea" for their astounding richness of life. Due to their structural complexity, corals are one of the most productive ecosystems on Earth, providing important services to mankind including fisheries, coastal protection, medicines, recreation, and tourism.
Source: Internet
Plz answer this question: Read the passage and examine the photos. Then, suggest two reasons that scientists think developing pollen grains made vascular plants the most successful plants that live on land.
Answer:
Vascular plants are successful due to better transportation for water, nutrients and reproduction.
The xylem and phloem of the vascular bundles allow for distribution of water and food to all parts of the body.
Fill in the Blanks
Cancer occurs when there is a _____________ in the gene. Division in cancer cells is _______________. Cancer cells crowd out other __________cell and function _________________. They can also _____________the correct functioning of major organs.
Answer:
Disease
Propatogenic
Cell
include
a human red blood cell is placed in a solution whose solute concentration is twice as great as the concentration of the cell cytoplasm. The cell membrane is selectively permeable allowing water but not the solutes to pass through. What will happen to the cell? a.) No change b.) the cell will shrivel because of osmosis c.) the cell will swell because of osmosis d.) the cell will shrivel because of active transport of water e.) the cell will swell because of active transport of water
Answer:
the cell will shrivel because of osmosis, moving to the region of higher concentration, and it shrivels due lost of water
According to the food chain shown, about how much energy from the grasshopper trophic level is transferred to the frog trophic level?
The amount of energy transferred to frog is 10% of the energy contained in grasshopper.
This is a representation of energy levels and distribution in a food chain in an Ecosystem. When a group of organism represent the same level in a food chain, in an ecosystem ,this is trophic level. Food chain represent a linear representation of nutrients and therefore energy distributions in an ecosystem.
Basically, in an ecosystem, there is always reduction in energy transfer from one trophic level to another by 10%. This is because, as the energy is transferred from the producer (green plants) to the primary consumer, the hopper, only 10% of the available energy will pass through to the hopper because 90% of the energy will be used by the green plants for metabolic and other physiologic activities. As this is transferred to the next trophic level, the Frog, this will be reduced (for the same reasons) so that 10% of the energy received by the grasshopper is transferred to the frog.
Practically, if 100,000Kcal of energy was obtained by hopper from the primary producer,10,000kcal(10%) of 100,000 will be transferred to frog.
This 10% occurs at each trophic levels.
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below is a view at 1000x magnification of a gram stain of the cerebrospinal fluid. what type of white blood cell predominates in charlie’s csf?
The type of white blood cell that predominated in charlie's CSF is neutrophils.
Cerebrospinal fluid (CSF) is a transparent, colorless plasma ultrafiltrate with little protein and few cells. It is produced in the choroid plexus in the ventricular brain system.
The type of white blood cell that predominated in charlie's CSF is neutrophils. They are granular leucocytes, with active phagocytes. In the cytoplasm, there is the presence of neutral staining granules whose phagocytic activities are integral to subdue the invasion of pathogens.
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PLEASE HELP ME IM TIMED!
Answer:
D
Explanation:
Actually fat is the best source of energy, since it is time consuming to break down a molecule of fat, carbohydrate is now used as an alternative to that since the molecules are broken down quicker.
can anyone explain for me number 2 and 3
Answer:
wassup bro,
could you share the whole screen thing so I can try
thnx
Enzymes transferring electrons at the start of the ETS are referred to as ________, whereas enzymes transferring electrons to the terminal electron acceptor are designated as ________.Question 40 options:a) sulfatases; nitrogenasesb) lyases; hydrolasesc) permeases; proton pumpsd) dehydrogenases; oxidasese) oxidases; dehydrogenases
Answer:
dehydrogenases; oxidases
Explanation:
What are the three general classes of neurons that correspond to the three major aspects of nervous system function
mucous membranes are an example of which type of tissue?
Answer:epithelial
Explanation:
is there a nutritional difference in brown and white eggs
Answer:
there is no significant difference in nutrients between brown and white eggs.
One function of the nervous system is to maintain ____________________, or stability within the body
Answer:
Answer: Maintain body homeostasis with electrical signals.
Explanation:
Your nervous system is your body's command center. Originating from your brain, it controls your movements, thoughts and automatic responses to the world around you. It also controls other body systems and processes, such as digestion, breathing.
Which is transported in the xylem of a plant?
Answer:
B. Nutrients
Explanation:
Xylem transports water upwards through the stem from the soil
Dissolved in this water are nutrients such as nitrates which are vital for plants
Help me with this please
Answer:
4.Red
5. gamma waves
5. Gamma waves
Explanation:
if you look at the visible light they label all the colors for you red is at the end closest to increasing wavelength
Which type of cell is shown in the figure?
A: Triploid cell
B: Diploid cell
C: Polyploid cell
D: Haploid cell
Answer:
Haploid
Explanation:
Mutations in proto-oncogenes are generally _____ whereas mutations in tumor-suppressor alleles are generally _____.
Answer:
mutations in proto-oncogene are generally cancerous while mutation in tumor-suppressor alleles are recessive and result lost of function
All of the following among A-D apply to toll-like receptors EXCEPT A. they bind to PAMPS B. they induce the release of cytokines when activated C. they directly lyse bound pathogens D. when stimulated, they activate the immune system of the body E. there are no exceptions, A-D are all true
The toll-like receptors do NOT directly lyse bound pathogens (Option C). These protein receptors play fundamental roles in the innate immune system.
Toll-like receptors (TLRs) are single-pass membrane-spanning protein receptors that play fundamental functions in the innate immune system.
TLRs are differentially expressed on the surface of antigen-presenting cells (i.e., macrophages and dendritic cells) in order to recognize evolutionary conserved antigenic domains in different pathogenic microorganisms (e.g. bacteria).
TLRs initiate innate immune responses such as, for example, inflammatory responses, by identifying conserved pathogen-associated molecule patterns (PAMPs).
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4. What are the four components of the Earth system?
Lithosphere (land), hydrosphere (water), biosphere (living things), and atmosphere (air)
What percentage of body water loss can impact athletic performance?
is SARS a common virus?
Answer: SARS is not a common virus, it is a viral respiratory illness that was recognized as a global threat. it is spread through close contact. Although it is a very serious illness, it is rare to get. only eight persons were laboratory-confirmed as SARS cases.
Explanation:
Two brothers have thick hair that grows over their faces and most of their bodies.
This human disorder, called Ambra's Syndrome, shows X-linked dominant inheritance. The
mother of the boys is also affected by Ambra's Syndrome, although her excessive hair growth
occurs in various, scattered patches on her skin rather than a continuous coverage like her sons.
What is the most likely explanation for the patchy expression of hairlessness on the mother's
skin?
The most likely explanation for the irregular expression of hairlessness on the mother's skin is codominance
Codominance is a biological term to refer to the hereditary pattern that is characterized by:
In the heterozygous state, there is no recessive allele, but both behave as dominant. Codominance is characterized by the manifestation of both characteristics as dominant, without mixing.According to the above, the irregular expression of the lack of hair in the mother is a manifestation of the codominance of the hair gene and the hairless gene that do not mix but are seen independently.
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