Answer:
c
Explanation:
The lower limit should be small enough for the cell to move in the fluid efficiently. Therefore, option (D) is correct.
The major consideration in setting the lower limit of cell size is the need for the cell to move in fluid efficiently. As cells become smaller, their surface area-to-volume ratio increases, allowing for more effective exchange of nutrients, gases, and waste products across their membrane.
This is particularly important for cells living in fluid environments where diffusion plays a crucial role in these exchanges. Small cells have an advantage in absorbing and expelling substances due to their larger surface area relative to their volume. Therefore, the efficiency of nutrient uptake and waste removal becomes more effective with smaller cell sizes, making efficient movement in fluid environments a significant factor in determining the lower limit of cell size. Thus, option (D) is correct.
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Two noncellular agents, smaller than viruses, are infectious RNA strands called ___ and infectious proteins called ___. prions; viroids prions; phages viroids; phages viriods; prions prions; capsomeres
Answer:
A. prions; viroids
Explanation:
Along one side of a DNA molecule, the nucleotides are connected to each other by ________ bounds between _______
Answer:
Nucleotides are joined together by covalent bonds between the phosphate group of one nucleotide and the third carbon atom of the pentose sugar in the next nucleotide.
Explanation:
Along one side of a DNA molecule, the nucleotides are connected to each other by covalent bonds between the phosphate group pf one nucleotide and the third carbon atom of the pentose sugar (deoxyribose sugar) in the next nucleotide.
How nucleotides are arranged in DNA?Two nucleotides are attached via a phosphodiester bond to form dinucleotide. Another nucleotides are added in same manner to form polynucleotide chain.
In this polynucleotide chain, the nucleotides are connected to each other by covalent bonds between phosphate group of one nucleotide and third carbon atom of deoxyribose sugar and forms a phosphate backbone of DNA.
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The place where a group of organisms lives is called the ___________. The combination of the community and habitat is called the ___________.
Answer:
the first blank is biodiversity. I think like that
The place where a group of organisms lives is called the habitat. The combination of the community and habitat is called the ecosystem.
What is habitat and ecosystem?An ecosystem is basically the neighborhood where animal lives. The habitat is the animal's address in that neighborhood. Some animals can survive in more than one habitat. Other animals are limited to certain habitats. For example, moose habitat is more specific than gray squirrel habit.
Moreover, ecosystem is defined as the interrelationships between the biotic and abiotic component of the environment. Whereas habitat is defined as the natural environment in which a particular species of plants and animals lives.
Therefore, a habitat is a place where an organism makes its home. A habitat meets all the environmental conditions an organism needs to survive. For an animal, that means everything it needs to find and gather food, select a mate, and successfully reproduce.
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g. What is the function of CU?
Answer:
to give education ,to make all the people educated ,to make society good
The control unit (CU) is a component of a computer's central processing unit (CPU) that directs operation of the processor. It tells the computer's memory, arithmetic/logic unit and input and output devices how to respond to a program's instructions
Think back to the activity from the beginning of the lesson. After what you have
learned about substances and mixtures, how have your ideas changed?
Answer:
......what lesson....
Explanation:
would you mind clearing up the question a little
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What is Cost ???
Answer:
An amount that has to be paid or spent to buy or obtain something is called cost.
Answer:
brainliest me
Explanation:
thx for the points
Modern scientists can splice DNA from different species together to produce what is referred to as ______ DNA.
Answer
Recombinant DNA. a genetic material that has been spliced together from multiple types of organisms. Transgenic organism. an individual that receives recombinant DNA
Explanation:pa brainliest asnwer po
when not engaged in the processes leading to cell division, how many chromosomes from your mother are present in the nucleus of each of your somatic cells?
Answer: the answer is
23
how many alleles for each gene does an organism carry?
You’re pretty Without (c)
You are du(m)b
True or false: The size and complexity of organisms is directly related to the number of total chromosomes it has. If false, make it a correct statement
I think the answer to this is true, but I'm not really for sure
please help me!!!
Oral groove in paramecium is situated on
a.Dorsal side
b.Lateral side
c.ventral side
d.none
What causes a substance’s identity to change during a chemical change?
During cellular respiration, most of the ATP energy generated comes from the electron transport chain. True false question. True False
Answer:
A true
Explanation:
only 4 at is created outside the electron transport chain
but cellular respiration produces at net gain of 36 atp
thus the other 32 atp comes from the electron transport chain
Which would be least likely to be affected by a density-dependent limiting 4
factor?
O a small population of tigers scattered across a wide area
O a rapidly reproducing population of bacteria
a large, dense population of fish in a pond
a population of birds with a high immigration rate
Answer: a small population of tigers scattered across a wide area
Explanation:
Hope this helps
Answer:
The answer is a. a small population of tigers scattered across a wide area
the baglike, muscular organ that mixes and chemically changes protein is the
The __________ __________ of the midbrain receive auditory input and trigger the head-turning auditory reflex.
Answer:inferior colliculi
Explanation:
Given that the fossil record provides the key evidence for evolution, what is the importance of the theory of evolution?
Answer:
It represents our understanding of the process by which evolution occurs.
Explanation:
which animal is one of only two mammals that lay eggs?
Explanation:
the echidna is the answer
Answer:
Platypus
Explanation:
A cross in which only a single trait with two variations is considered is called a(n) cross or single factor cross.
Answer:
Monohybrid
Explanation:
One antibody type has thousands of antigen receptors on its cell surface. How many types of antigens will typically fit these receptors
Answer:
one
Explanation:
what insects don't have piercing and sucking mouth parts?
.
Answer:
lice
Explanation:
they bite and chew on their host skin
A neuron conducting an impulse from the CNS to the detrusor muscle of the urinary bladder would be classified as a(n) ____________ neuron
Answer:
! autonomic motor
Explanation:
which statement regarding normal microbiota of the human respiratory system is false?
Given what we know about the respiratory system, we can confirm that the statement regarding normal microbiota of the human respiratory system that is false is option B " The upper respiratory tract is mostly sterile".
As far as the human respiratory tract and system, it was previously believed that the upper tract contained bacteria while the lower respiratory tract was sterile. Recently, however, this has been proven to be false. Bacteria are in fact present in the entire respiratory tract even in healthy individuals. For this reason, options a, c, and d are true, and the only false option present is b.
This question was answered based on the complete question found online that states:
Which statement regarding normal microbiota of the human respiratory system is FALSE?
a) The trachea normally may contain a few bacteria.
b) The upper respiratory tract is mostly sterile.
c) The ciliary escalator in the bronchial tubes keeps the lower respiratory tract nearly sterile.
d) Potentially pathogenic microorganisms are present in non-sterile portions of the respiratory tract but usually do not cause disease.
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What type of organism in the ocean food web is the most numerous
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[tex] \large \text \purple{producers : }[/tex]
Producers are described as autotrophic, which means they are able to make their own food. Just like producers on land, producers in the marine environment convert energy from the sun into food energy through photosynthesis. Phytoplankton are the most abundant and widespread producers in the marine environment
hope it helps ❤~
Answer:
above answer may help youWho 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
In an experiment that compares a combination mental-physical practice condition to an all-mental practice condition, an all-physical practice condition, and a no practice condition, the typical results show that participants in the combination mental-physical practice condition would learn the skill
a. as well as or better than those in the all-physical practice condition.
b. about as well as those in the all-mental practice condition.
c. about as well as those in the no practice condition.
d. The results would depend on the combination of the amount of mental and physical practice.
The combination mental-physical practice condition is effective to learn the skill as well as or better than those in the all-physical practice condition. Mental-physical practice enhances both cognitive and physical skills.
Mental practice, also known as mental/skill rehearsal, refers to the cognitive (i.e., thinking) rehearsal of a given skill prior to its execution.
It has been shown that mental practice can be effective for enhancing the performance of both cognitive and physical skills.
The mental-physical practice has been shown to be helpful to enhance self-motivation, confidence, and reduce feelings of anxiety.
Mental practices always must be employed to supplement physical practices instead of replacing such physical exercises.
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how is cell division normally controlled or regulated
Answer:
A variety of genes are involved in the control of cell growth and division. ... Tight regulation of this process ensures that a dividing cell's DNA is copied properly, any errors in the DNA are repaired, and each daughter cell receives a full set of chromosomes.
Explanation:
Mark me brainly please.
Does surface area increase permeability of membrane
Answer:
The magnitude of the concentration gradient depends on the membrane permeability. The concentration gradient changes the available surface area. It is suggested that a high-permeability compound is absorbed mainly from the top of the villi, while a low-permeability
Explanation:
1. Will loves to go fishing in the coastal estuary. He brings home his catch every weekend and bakes the fish for dinner. The next time he goes to his favorite fishing area, a sign is in place, warning residents of high heavy metals in the water. Which statement best explains the impact of eating fish from the estuary?
Heavy metals can biomagnify in large fish, making human consumers ill.
Heavy metals are water soluble; humans can eat them in small amounts.
Large fish will die from the heavy metals, but small fish can be consumed.
Will should avoid small fish but can collect large fish with less heavy metals.
2. fisherman collecting shellfish notices that many are very small and lack the thick hard shell he is accustomed to seeing in the species. Which statement best explains what may be impacting the shellfish population?
Ocean acidification
Ocean warming
Coral bleaching
Climate change
Answer:
Ocean Acidification
Explanation:
The high level of acid in the ocean has caused the shellfishes shell to wear down.