Answer:
The correct answer is - they lack a nucleus, DNA, and organelles like the endoplasmic reticulum or mitochondria
Explanation:
Red blood cells are considered as the cells, carry oxygen with the help of hemoglobin protein present in it to the various parts of the body from the lungs and carry CO2 back to the lungs.
These cells are different from the normal cell as they do not participate in the protein synthesis due to the fact that they lack various cell organelle and cell components required. Nucleus and DNA are major components or organelle missing from these cells. In addition to these two, endoplasmic reticulum and mitochondria also missing from RBCs.
Use the picture below to help you answer the question.
Which container holds a gas?
Question 24 options:
(A)
(B)
(C)
D.None of the above.
Answer:
A
Explanation:
Because the particles are quite away and look alike as gas diagram
Compare and contrast passive transport, active transport, and osmosis
Answer:
Passive transport moves molecules and ions from a higher concentration to a lower concentration without any energy while active transport does the same thing only it uses energy. Osmosis deals with the net movement of solvent molecules through a membrane with a higher solute concentration. Osmosis and active transport both work together, while osmosis does its own movement the active transport moves the dissolved solutes across a membrane against a concentration gradient.
Active transport and passive transport are almost the same they function the same only one doesn't require energy while the other one does. Hence why active transport and osmosis work well together it's because of the energy that helps transport dissolved solutes.
Hope this helped :)
Which of the following is a characteristic of all reptiles?
Select one:
a.
lack vertebrae
b.
use gills to breathe
c.
are fully aquatic
d.
are ectothermic
Answer:
D - Are ectothermic; (took the test)
Explanation:
Reptiles are cold-blooded, scaly vertebrates.
Reptiles are the Chordata that belongs to the animal kingdom and are covered with the scaly body. All reptiles are ectothermic or cold-blooded. Thus, option d is correct.
What are the characteristics of reptiles?Reptiles are the vertebrates that have backbones and scaly bodies hence Chordates. The dry skin of the reptiles is covered by scales and bony plates. They have four legs and have intermediate properties between mammals and amphibians.
They breathe through the lungs, and almost all reptiles lay eggs and hence are oviparous. They have cold-blooded metabolisms and hence are ectothermic. They regulate and maintain the internal body temperature according to the external environment.
Therefore, all reptiles are ectothermic (cold-blooded).
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DNA structure diagram
Here is a diagram of DNA structure
It can go 5' to 3'(Parallel) or 3' to 5'(Anti-Parallel)
What organelle do you think this represents?
What is the analogy?
the atom below has an incomplete valence shell
Answer:
No it actually doesn't
Explanation:
You can thank later
Which statement describes carrying capacity as it relates to a group of prairie
dogs?
A. The amount of food and water available for prairie dogs in an area
B. The amount of space available for prairie dogs to live in an area
C. The maximum number of prairie dogs that an area can support
D. The maximum number of predators that can live in an area without
killing off all the prairie dogs
Answer: Option C
I hoped that helped!
The maximum number of prairie dogs that an area can support.
What affects wearing capability?Wearing potential, or the wide variety of individuals that an environment can sustain over time without destroying or degrading the environment is determined via some key elements: meal availability, water, and area.
How do you degree the carrying ability of a habitat?Wearing ability may be anticipated via calculating the total vicinity and an overall populace of that place.
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DNA Relicase and DNA Polymerase are both important molecules that play a role in the process of DNA replication What types of molecules are polymerase and helicase?
A: acids
B: bases
c: enzymes
d: water
Answer:
enzymes
Explanation:
Predators Contribute to a Stable Ecosystem
In nature, energy flows in only one direction. Transfer of energy must occur in an ecosystem
because all life needs energy to live, and only certain organisms can change solar energy into
chemical energy. Producers are caten by consumers that are, in turn, caten by other consumers,
Stable ecosystems must contain predators to help control the populations of consumers. Since
ecosystems contain many predators, exterminating predators would require a massive effort that
would wipe out predatory species from barnacles to blue whales. Without the population control
provided by predators, some organisms would soon overpopulate,
Explain the phrase "only certain organisms can change solar energy into chemical energy," in the
underlined portion of the first paragraph. In your answer be sure to identify:
1)the type of nutrition carried out by these organisms
2)the process being carried out in this type of nutrition
3)the organelles present in the cells of these organisms that are directly involved in changing solar
energy into chemical energy
The phrase "only certain organisms can change solar energy into chemical energy," is about the plants which means producer organisms.
What is an example food chain?An example of this type of process is: plants generate their own food and are part of the feeding of insects, which are consumed by frogs. They serve as food for snakes, a source of nutrition for birds, which are consumed by decomposers.
Organisms of this level are classified as autotrophs, that is, they are living beings capable of producing their own food, not being necessary to feed on another living being. Plants and algae are organisms classified as producers.
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I need this asaapp!!!
C I think I hope my answer helps
What type of stress is happening at the San Andres Fault ?
Answer:
Shear stress (strike slip fault)
Explanation:
The organism shown is_________ , and it is a ___________.
A.Multicellular A.Bacteria
B.Unicellular B.Fungi
C.Plant
Which of the four molecules has the highest amount of stored energy? Carbon dioxide water oxygen glucose
Answer:
Glucose
Explanation:
Glucose has the highest amount of stored energy that the others because glucose posses more chemical bonds which can undergo rearrangement as a result of chemical reactions. When the bonds are rearranged there is release of energy meaning that the bonds in glucose consist of stored energy. Water, carbondioxide and oxygen does not have much chemical bonds compared to glucose, hence they don't have stored chemical energy.
group of the same kind of individuals in a given space at a given time is known as a(an) _______________.
Air, water, soil and light are examples of ___________ factors in an ecosystem.
In a food chain, how much energy would be passed to the secondary consumers if you had 1,000 producers?
True or False. Dead leaves on the forest floor become new soil through the action of decomposers.
True or False. Heterotrophs get the energy to produce their own food from the sun.
An herbivore is also classified as a __________ consumer.
A food ________ shows all of the feeding relationships in an ecosystem.
All of the plant and animal populations living and interacting in a given physical environment is known as a(an) ____________.
True or False. An ecological niche is a feeding pattern exhibited by species that form a community.
The path in which energy is transferred from one organisms to another through feeding patterns is known as a(an) _________________.
Answer:
Dead leaves on the forest floor... is true
What is meant by Earth's "Lag Period"?
Answer:
This lag phase is the period when the bacteria are adjusting to the environment. Following the lag phase is the log phase, in which population grows in a logarithmic fashion. As the population grows, the bacteria consume available nutrients and produce waste products.
Explanation:
hope it helps:)
.
hi someone pls help <3
The answer is Bread Is Baked, If it's wrong I'm sorry but I'm pretty sure it's bread is baked because the yeast consumed the sugar creating new substances and the reaction can not be reversed.
Which of these would provide the best evidence for the theory of evolution?
A
fossils of ancient tigers that had larger ears than tigers have today
B
oil found deep under the ice sheets of Antarctica
C
a person’s hair growing faster in the summer than it does in winter
D
ancient maps that show that countries had different borders long ago
Answer:A
Explanation:
The meaning of evolution-the process by which different kinds of living organisms are thought to have developed and diversified from earlier forms during the history of the earth.
So, B is incorrect since it is talking of the present. C, shows the growing of hair, but has no answer to evolution, since it does not show an organism growing from the past to present. D, shows evolution of land but no “living organism”
In conclusion, the best answer is A.
what could cause a population to reach it's carrying capacity
Answer:
As competition increases and resources become increasingly scarce, populations reach the carrying capacity (K) of their environment, causing their growth rate to slow nearly to zero. This produces an S-shaped curve of population growth known as the logistic curve (right).
Explanation:
hope this helps
Answer:
people having kids with everyone ,
Explanation:
1. As food availability increases, carrying capacity increases in all ecosystems.
2.Animals who feed on the predators of the fish will increase in number.
3.As population density increases, the spread of disease is increased
4.How is disease affected by a population's density?
5.The population has a limited food supply.
6. Natality - birth rate
Mortality - death rate
Immigration - an individual enters the population
Emigration - an individual leaves the population
I give out brainlist
Mendel allowed the F1 plants to cross. What was the name he gave to the offspring of the F1 generation?
The next generation
The grandkids
The second filial generation or the F2 generation
All of the above
Answer:
The second filial generation or the F2 generation
Explanation:
Plants that live in hot, dry climates have evolved mechanisms to help conserve limited water supplies. One example is the closing of leaf openings by guard cells during the day to decrease water loss from their leaves. This detection of and response to an environmental stimulus is an example of
Answer:
feedback mechanism
Explanation:
Feedback mechanism: In biology, the term "feedback mechanism" is described as a physiological loop that is responsible for bringing up the body either away or towards the steady or normal state. The feedback mechanism is also denoted as "feedback loop" and is responsible for either inhibiting or amplifying a specific biological pathway. Therefore, these pathways tend to return the body towards "homeostasis".
In the question above, the given statement is an example of a "feedback mechanism".
When using a light microscope, focus the specimen with the scanning objective lens first.
Answer:
Explanation:
PLACE THE SLIDE ON THE MICROSCOPE STAGE SUCH THAT THE PORTION OF THE SLIDE YOU WANT TO VIEW IS UNDER THE OBJECTIVE. 5. FOCUS ON SPECIMEN, FIRST USING THE COARSE AND THEN THE FINE FOCUS CONTROLS. YOU MAY HAVE TO MOVE THE SLIDE AROUND ON THE STAGE OF THE MICROSCOPE TO BRING THE SPECIMEN INTO THE VIEWING AREA.
can i have brainliest
First, we have to place the slide on the microscope. There are different types of microscope such as simple microscope, compound microscope.
What is a light microscope?Light microscope is a biological instrument which uses visible light to see the objects. Light microscope works on the principal of reflection and refraction. It is composed of objective lens and eyepiece lens.
Steps for using light microscope:
Place the slide on the microscope.Focus the specimen, first using the coarse and then the fine focus controlMove the slide around on the stage of microscope.Applications of light microscope:
It is used for determining the morphologies of living cells.It helps in studying structure of locomotion.Therefore, First we have to place the slide on the microscope. There are different types of microscope such as simple microscope, compound microscope.
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what is the cleanest in a school meaning less bacteria?
The cleanest in a school is the sinks. Or the bottles of Hand Sanitizer.
BIOLOGY STUDENTS CLICK MY QUESTION PLEASE
Three plants were grown to study the effects of nitrate and magnesium ion deficiency on their development. They were kept in the same conditions, except for the types of minerals supplied.
Use
Plant A was provided with all essential minerals.
Plant B was given all minerals except nitrate ions. Plant C was given all minerals except magnesium ions. State three conditions, other than water and the concentration of mineral ions, that would need to be kept the same for all the plants, in order to make the investigation a fair test
Answer:
Periods of light-timeTemperatureSubstrate/Soil typeExplanation:
Controlled variable: Variables that are controlled and have no influence on the results of the experiment. These variables do not affect the change in the dependent variable values.
These variables must be the same for all the subjects or groups (control and experimental). In the case of plants, controlled variables are probably those needed by the plants to correct development.
All plants should be exposed to the same period of light-time and the same temperature. Also, the substrate or soil where the plants are growing should be the same.
Within the chemical bonds of CaCl2, the electrons are what?
A at rest.
B shared.
C transferred.
D Electrons are not involved in this bond.
Answer:
NOT B. OR D. MAY BE C.
Explanation:
hope this helps ya
The process of osmosis is best illustrated by the movement of a. water into root hair cells b. oxygen intro red blood cells c. carbon dioxide through stomates d. glucose through phloem
Answer:
a. water into root hair cells
Explanation:
Osmosis can be defined as a process which typically involves the movement of a solvent molecule such as water through a semi-permeable from a region of high concentration to a region of lower concentration.
Hence, the process of osmosis is best illustrated by the movement of water into root hair cells because they are used by the plants to absorb water from the soil.
List six alternative energy sources.
Answer:
Tidal power, solar power, energy, wind power, biofuel, and hydrogen are six alternative energy sources.
cell body-__________ of the neuron
Answer:
soma
Explanation:
I give out brainlist
Mendel's work formed the foundation of genetics, the scientific study of heredity
True
or
False
2. The nucleus of an atom contains
1 point
O protons and neutrons
protons and electrons
O neutrons and electrons
O protons, neutrons, and electrons
(GIVING BRAINLIEST!! Who ever trys to steal the points will get reported)
Why do the northern United States get more snow than the southern states?
A) Because there are colder temperatures in the winter months in the northern states
B) Because there are colder temperatures in the winter months in the southern states
C) Because there are warmer temperatures in the summer months in the northern states
D) Because there are warmer temperatures in the summer months in the southern states
Answer:
A
Explanation:
because it doesn't snow if it is warm so c and are wrong and the question said why does the northern states get more snow not southern so b is wrong so A is the correct answer
