Answer:
Ribosomes
Explanation:
Prokaryotic cells do have a primitive form of ribosomes. Thus, the correct option for this question is A.
What are Prokaryotic cells?Prokaryotic cells may be defined as the types of cells that lack a well-defined nucleus and other membrane-bound cell organelles. The genetic material of a prokaryotic cell is a single chromosome made up of a single strand of DNA.
A Prokaryotic cell typically has a cell membrane or plasma membrane that functions or operates like a protective cover. Golgi apparatus, mitochondria, and chloroplasts are significantly absent in prokaryotic cells. This is because they are membrane-bound cell organelles.
The traces of ribosomes are required for the process of protein synthesis in order to accomplish metabolic activities required for the survival of prokaryotic organisms.
Therefore, prokaryotic cells do have a primitive form of ribosomes. Thus, the correct option for this question is A.
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Suppose you have two liquids. One has a pH of 2. The other has a pH of 9. What can you tell from those pH?
Answer:
The liquid with a pH of 2 is an acid. The liquid with a pH of 9 is a base.
Explanation:
pH Scale:
1 2 3 4 5 6 7 8 9 10 11 12 13 14
A pH scale ranges from 1 - 14.7 is neutral.Any number on the scale less than 7 is acidic (acid).Any number on the scale more than 7 is basic (base).Describe how the following are important in the makeup of the cell membrane: 1. Phospholipid bilayer 2. Proteins 3. Carbohydrates 4. Cholesterol
Answer:
1. Phospholipid bilayer - The lipid bilayer acts as a barrier to the passage of molecules and ions into and out of the cell
2. Proteins - Membrane transport protein (or transporter) is a kind of membrane protein that involved in the movement of ions, small molecules, or macromolecules across a biological membrane.
3. Carbohydrates - Carbohydrates covalently linked to proteins (glycoproteins) or lipids (glycolipids) are also a part of cell membranes, and function as adhesion and address loci for cells.
4. Cholesterol - Cholesterol reduces permeability of lipid membranes. ... Cholesterol plays has a role in membrane fluidity but it's most important function is in reducing the permeability of the cell membrane.
Explanation:
is Wood Block a mineral or non-mineral
Answer:
Non-mineral
Explanation:
Wood is not a mineral. Minerals are rock and other types, but wood is not a rock.
whos trying to helps me ?
Answer:
1.9mL to 8.7mL (Answer A)
Answer:1.9ml to 8.7ml
Explanation:
Why were Oparin and Darwin's ideas about the Origins of Life not immediately considered to be part of a scientific theory about the origins of life on Earth?
Answer:
Darwin's opinion seems to have changed over time from his original remark in the 1861 3rd edition of The Origin of Species.
Oparin and Darwin’s ideas about the Origins of life are not immediately considered to be part of a scientific theory about the origins of life on earth because the ideas they proposed were difficult to test or observe.
What is Oparin's hypothesis regarding the origin of life?According to the Oparin hypothesis life originate from inorganic molecules, like amino acids considered to be formed first, and then combines to form complex polymers.
This hypothesis has no scientific proof due for this reason the idea of Oparin idea was not immediately considered to be part of a scientific theory.
The theory given by Darwin challenged the idea that God is the creator of all animals and plants that are present on earth and there were no proper pieces of evidence to prove this theory when it is published to convince several scientists.
Due to a lack of pieces evidence and scientific proof, Oparin and Darwin's ideas about the Origins of Life on earth are not immediately considered to be part of scientific theory.
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What is the importance of studying fossils? * A. To provide information about current life forms and current environmental conditions B. To provide information about how life and environmental conditions may have changed C. To provide information about how previous life forms would exist in current environmental conditions D. To provide information about how current life forms would exist in previous environmental conditions
Answer:
The answer D
Explanation:
Paleontologists find and study fossils all over the world, in almost every environment, from the hot desert to the humid jungle. Studying fossils helps them learn about when and how different species lived millions of years ago. Sometimes, fossils tell scientists how the Earth has changed.
You are a virologist interested in studying the evolution of viral genomes. You are studying two newly isolated viral strains and have sequenced their genomes. You find that the genome of strain 1 contains 25% A, 55% G, 20% C, and 10% T. You report that you have isolated a virus with a single-stranded DNA genome. Based on what evidence can you make this conclusion
Answer:
See the answer below
Explanation:
In double-stranded DNA, the ratio of purine bases (Adenine and Guanine) and that of pyrimidine bases (Thymine and Cytosine) is 1:1 according to Chargaff's rule. This means that the percentage of Adenine must be equal to that of Guanine while that of Thymine must also be equal to Cytosine.
However, in the case of the newly isolated viral strain, the amount of Adenine (25%) and Guanine (55%) vary while that of Thymine (10%) and Cytosine (20%) also vary. This is in contrast to Chargaff's rule. Hence, the isolated virus is a single-stranded DNA virus instead of a double-stranded.
Explain in detail the inter-relationship
between the food chain and food
web.
Answer:
A food web consists of many food chains. A food chain only follows just one path as animals find food. eg: A hawk eats a snake, which has eaten a frog, which has eaten a grasshopper, which has eaten grass. A food web shows the many different paths plants and animals are connected.
explain why it is important for a scientist to be both logical and creative.
What is a trophic cascade?
How could you model this process in a different way? Explain how you’d design this model so that the entire process is clear to the reader.
Answer:
Edmentum and Plato sample answer
Like and Rate
An illustrated diagram would be helpful in understanding the transmission. The diagram would show an adult, with the major parts of the nervous system highlighted. The nerve pathways involved in stimuli processing and response would be highlighted in different colors to show autonomic and somatic and parasympathetic and sympathetic parts of the nervous system.
Describe the function of each organelle.
Nucleus
awnser:
The main function of the cell nucleus is to control gene expression and mediate the replication of DNA during the cell cycle. The nucleus is an organelle found in eukaryotic cells. Inside its fully enclosed nuclear membrane, it contains the majority of the cell's genetic material.
Answer:
The nucleus is the central and most important part of an object, it controls and regulate the activity of cells. The nucleus also carries the genes.
Explanation:
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4. What statement best describes the composition (parts that make up) of an
ecosystem?
a. Animals and rocks
b. Bacteria and fungi
C. Sunlight and water
d. Biotic and abiotic factors
Answer:
D
Explanation:
This includes all things living and not.
Only green organisms have chloroplasts, so do green frogs and toads have chloroplasts??
Answer:
Chlorophyll is a cell that comes from plants not animals.
Explanation:
Chlorophyll is the part of chloroplast and is the light absorbing pigments which provide green color to the plants, but chloroplast traps the solar energy, which is the site of photosynthesis and other chemical reactions and works as the ‘powerhouse of the cell’ like mitochondria.
When you first see something, the cornea projects an image onto your:
A. optic nerve
B. occipital lobe
O c. retina
D. iris
Answer:
C
Explanation:
Retina
-Give an example of a scientific law.
-Give an example of a theory in science.
Please help :)
Answer:
An example of a scientific law is Newton's first law.
Explanation:
It says that every object will remain at rest or in uniform motion in a straight line unless forced to change direction by the action of an external force.
An example of a theory in science is the Big Bang theory. It is something that someone came up with that is a rational explanation to explain why or how something happened or came into place.
Urgent I’m so confused
Homeostasis is when an internal stimulus causes an external response.
True or False???
______ is a part of all organic compounds, which make up living things.
Answer:
Carbon.
Explanation:
Carbon is a part of all organic compounds.
why these animals have so much blubber
Answer:
Animals that have blubber live in cold habitats, for example, Antarctica. The blubber, or fat, protects them from the snowy and icy environment. Walrus' are a great example. Without blubber, their insides would get too cold, and they could freeze to death.
hope this helps
Answer:
Depends on which animal
Explanation:
some animals need lots of fat "excess skin" to survive in a certain environment or to adapt to a new habitat
identity
QUICK CHECK
temperature of the water
Choose the correct measuring device for gathering
data from the list of tools in the drop-down menu.
heartbeats per minute
volume of liquid
*
time
DONE
distance across the pond
Intro
Answer:
34
Explanation:
What trophic levels contain more energy? please help
A commercial advertising a diet pill says it is scientifically proven to help you lose weight. It is recommended by a doctor who observed that some of his patients lost weight after taking the pill for a week. Why is this claim considered pseudoscience?
Answer:
No it hasn't been recommended by a doctor.
Explanation:
This is considered pseudoscience because there is no proof that it has been scientifically proven.
does photosynthesis occur in mushroom.why?
Answer:
no
Explanation:
because it is fungi and it doesnt have chloroplast (which is needed for photosynthesis)
is suger a monomer and suger cube a polymer?
name the following the plant hormone which is responsible for the ripening of fruits
Answer:
ethylene
Explanation:
plant hormone responsible for fruit ripening as well as senescence of vegetative tissues.
Drag the tiles to the correct boxes to form correct pairs. Not all tiles will be used.
Match each example given to the type of scientific concept.
theory
hypothesis
law
observation
If the amount of daylight
increases plant growth, then
plants will have higher rates
of growth during the summer.
arrowBoth
The outer layer of the Earth is
divided into plates that move
due to convection currents
under the surface.
arrowBoth
For every action or force
in nature, there is an equal
and opposite reaction.
arrowBoth
Answer and Explanation:
If the amount of daylight increases plant growth, then plants will have higher rates of growth during the summer. hypothesis. The outer layer of the Earth is divided into plates that move due to convection currents under the surface. theoryFor every action or force in nature, there is an equal and opposite reaction. law A hypothesis is a scientific conjecture, not verified that requires corroboration. It is a possibility, but not a fact. A hypothesis must express what is expected to occur in a perfectly comprehensive manner. There must be a logical relation between variables. It must be objective. The researcher suggests a hypothesis in order to predict what is going to happen. There are different kinds of hypotheses: descriptive, correlative, differentiative, or causative. A law is an affirmation based on repeated experimental observations, it is not that might describe one aspect of a natural phenomenon. This means that it is corroborated by facts, and not only by logic. There is a relation cause-effect. The scientific theory is a conceptual framework used to explain facts or phenomena and to make predictions. The theory is fundamental to science because it allows scientists to organize and understand observations. The construction of a theory begins with a hypothesis. The scientist believes that a certain phenomenon occurs in a certain way and so he/she performs observations under the scientific method to prove that his/her hypothesis is valid or not valid. The systematization of the observations as well as of the empirical data collected might derive in a scientific theory that can explain the analyzed phenomenon. A scientific theory is a knowledge that was contrasted in several ways.
select the correct answer from each drop down menu. BLANK will develop pharyngeal arches. BLANK will develop a postnatal tail in the embryonic stage.
the first blank the opinions are
1. earthworms
2. barb fish
3. crabs
4. leeches
and for the second the opinions are
1. ladybugs
2. snails
3. sea cucumbers
4. newts
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Actually Welcome to the Concept of the Biology
1) Brab Fish
2) Newts
how do we know energy is transferred in an energy pyramid?
Answer:
While food chains and food webs show relationships between organisms, and energy pyramid quantifies the amount of energy transferred from one trophic level to the next, when one organism eats another, wherein approximately 10% of the energy available is retained and passed along.
Which of the following is qualitative information?
A. The mineral is red and hard
B. The mineral has a hardness of 8
C. The mineral has a mass of 2 grams
D. The mineral has a volume of 4 cm3
Answer:
option A. is correct.
hope it helps
Answer:
A, The Mineral is red and hard
Explanation:
Because the definition of qualitative is describing an object based on looking at it, and the other selections are just weight and feel.
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Which sphere was impacted the most?
Humans are part of the biosphere because we are living things. The biosphere includes ALL living things.