Answer:
_____ phase is the period during the life of a cell between the end of mitosis and the synthesis of more genetic material. G0 phase G1 phase G2 phase S phase
G 1 phase
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Cellular respiration is a process involving the breakdown of glucose molecules in order to generate energy for cellular activities. Given the general reaction below, which of the following best describes the products labeled x and y?
C6H12O6 + O2 → _x___ + __y___ + energy
a. The products are CO (carbon monoxide) and H2O2 (hydrogen peroxide), which then decompose into carbon dioxide (CO2) and water (H2O).
b. The products are H2O (water) and CO2 (carbon dioxide), which then undergo anaerobic respiration.
c. The products are CO2 (carbon dioxide) and H2O (water), which then become the reactants for photosynthesis.
d. The products are O2 (oxygen) and H2O (water), which are then used for growth and to keep the organism hydrated.
Crossing over occurs when
A- sister chromatids are pulled apart at the centromere during anaphase II
B- homologous chromosomes join together to form tetrads during prophase I
C- chromosomes are grouped together into new nuclei during telophase II
D- tetrads of homologous chromosomes randomly line up in metaphase I
The correct answer is B: homologous chromosomes join together to form tetrads during prophase I
A trait is likely to be heritable if _____ are more similar in that trait than _____.
a. dizygotic twins; monozygotic twins
b. monozygotic twins; dizygotic twins
c. ordinary siblings; dizygotic twins
d. dizygotic twins; ordinary siblings
Does cow liver have prokaryotic cells
Approximately ________ percent of lung cancer deaths are caused by smoking
Select all the concepts that biology can help you understand?
Patterns of inheritance in your family
Medicine
Personal health
Physics
Astronomy
Living things
Answer:
Biology is the branch of science that helps us to understand about the living system and helps in the detailed study of the body of an organism.
The living things, medicine, personal health, patterns of inheritance in the family are some of the factors that can be answered by the help of biology.
The terms such as astronomy and physics cannot be answered by the help of biology.
One human impact on the phosphorus cycle occurs through:
a. burning of fossil fuels.
b. the erosion of agricultural lands.
c. the greenhouse effect.
d. global warming.
e. depletion of the ozone layer.
Remote controls use invisible light of frequency just below the visible range. This part of the electromagnetic spectrum is called A) infrared B) microwaves C) ultraviolet D) x-rays
Answer:
a
Explanation:
What trophic leek do herbivores occupy in a food chain?
A- primary consumer
B- producer
C- secondary consumer
D-decomposer
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The major factor keeping forests from growing in grassland areas is _____.
grazing
grass fires
rainfall
soil structure
During dna replication in a bacterium a g is mistakenly inserted into the newly-synthesized dna strand opposite a t in the template dna strand. if this mistake is not repaired before the next round of dna replication, what mutation will eventually result?
The mutation will be one base substitution mutation.
Explanation:In the newly forming strand only one G is inserted mistakenly.As we know DNA replication is a semi conservative model.In which two strands of double stranded DNA will be two separate templates for the two newly strands of DNA.As one of the strand has one wrong nucleotide in its sequence. As if it is not repaired the substitution will become the part of newly formed strand formed from this mutated strand.And this mutation will pass onto next generation with half correct DNA and half wrong DNA.According to maslow, all humans acquire a similar set of motives through genetic endowment and social interaction.
a. True
b. False
Sort the descriptions into the appropriate bins, which illustrate the types of biaxial movement.
Biaxial Movement in Biology - Explanation of biaxial movement in biology and examples of synovial joints that exhibit this type of movement.
Explanation:Biaxial Movement in BiologyIn biology, biaxial movement refers to the ability of certain joints to move in two different planes. The synovial joints, such as the condyloid joint in the fingers and the saddle joint in the thumb, are examples of joints that exhibit biaxial movement.
For example, the condyloid joint allows for flexion and extension, as well as abduction and adduction. This means it can move forward and backward as well as side to side. Similarly, the saddle joint in the thumb allows for flexion and extension, as well as opposition and repositioning. This allows for a wide range of movement and dexterity in the hand.
Overall, biaxial movement in biology refers to the movement of joints in two different planes, enabling greater flexibility and range of motion.
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Why are people (agents) needed "on the ground" in order for the stuxnert virus to work?
The Stuxnet virus requires physical access to target systems for it to work, which is why people are needed "on the ground".
Explanation:The Stuxnet virus is a complex computer worm that was designed to specifically target and disrupt industrial systems, particularly those used in Iran's nuclear program. The reason people, or agents, are needed "on the ground" for the Stuxnet virus to work is because it requires physical access to the target systems in order to be introduced. Stuxnet was primarily spread through the use of infected USB drives, which means someone had to physically insert the infected drive into the target system for the virus to be unleashed.
Without this physical access, the Stuxnet virus cannot be deployed and will not be able to carry out its intended purpose of sabotaging the targeted industrial systems.
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The Stuxnet virus requires physical access to the target system in order to propagate and spread. Agents 'on the ground' are needed to introduce the virus into the targeted environment, by deliberately infecting USB drives or other removable media that are later connected to the targeted computers. This physical element is crucial because it differentiates the Stuxnet virus from other malware that spreads solely through online networks or the Internet.
Explanation:The Stuxnet virus is a complex computer worm that was specifically designed to target and disrupt industrial systems, including those used in nuclear facilities. It requires physical access to the target system in order to propagate and spread. Thus, people (agents) are needed 'on the ground' to introduce the virus into the targeted environment.
These agents might be individuals with access to the targeted facility, such as insiders or spies. They can deliberately introduce the virus into the system by infecting USB drives or other removable media that are later connected to the targeted computers. Once the virus enters the system, it can then spread within the network and carry out its destructive actions.
This physical element is crucial for the Stuxnet virus to work because it differentiates it from other malware that spreads solely through online networks or the Internet. The 'on the ground' component allows the virus to bypass potential barriers and security measures that might otherwise prevent a cyberattack from taking place.
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The _____ contains the pineal gland which secretes the hormone melatonin.thalamusepithalamushypothalamussubthalamus
___ enter the lymph and need transport carriers to circulate in the bloodstream.
What structural similarities do you observe between the lymph node and the spleen?
Final answer:
The lymph node and the spleen have several structural similarities. Both organs are part of the lymphatic system and are involved in the immune response. They both contain two types of tissue: red pulp and white pulp.
Explanation:
The lymph node and the spleen have several structural similarities. Both organs are part of the lymphatic system and are involved in the immune response. They both contain two types of tissue: red pulp and white pulp. The red pulp stores blood and removes damaged red blood cells, while the white pulp is rich in lymphocytes that remove antigen-coated bacteria from the blood. However, there are some differences between the two organs. The lymph node filters lymph, while the spleen filters blood.
Give an example of how cells structure relates to its functions in the body
Answer:
The structure of the cellular components in a cell determines the function of component.
Take the case of an organelle which produces energy in a eukaryotic cell called mitochondria. Mitochondria are structured in a way that it can synthesize a large amount of ATP in a small enclosed area.
The structure of mitochondria contains outer membrane, inner membrane and the matrix. The membranes are structured that they can hold and accumulate the protons and allow the flow of proton. Similarly, the inner membrane gets folded to increases the output of ATP synthesis by forming infoldings called cristae which embodies ATP synthase.
This shows how the structure and functions are related in a cell.
Because of retinal disparity, we can enjoy:
On day 2, how did the size of the mixed population compared to either one of the single species populations? it was the same size it was larger it was smaller
A researcher who studies neurodegenerative diseases has found that dying neurons contains a high concentration of miss-folded proteins in their cytoplasm. further experiments demonstrated that the lysosomes are working properly in these neurons. according to this information, which cellular structure is responsible for this disease?
What is the organelle that contains DNA?
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Which factors stimulate cell division when conditions are favorable?
Abnormal gametes associated with a heterozygous pericentric inversion result from
"the major promise of biometrics is to replace reusable passwords".
a. True
b. False
The major promise of biometrics is to replace reusable passwords - True
Biometric authentication is seen as a secure alternative to the traditional knowledge-based methods such as usernames and passwords. Biometrics relies on unique physiological traits like fingerprints, face recognition, voice recognition, and eye scans for verifying identity. Such traits are believed to be less susceptible to theft and duplication than passwords. In practical scenarios, devices like smartphones and laptops are already adopting biometrics in addition to or in place of passwords.
Biometrics offer a higher convenience, and for some users, an increased sense of security. However, it is important to note that if the biometric data is transmitted over a network, it could be just as vulnerable as passwords to certain types of attacks, and biometrics are not necessarily perfect and can sometimes be misled or have their data compromised.
Differentiate between the lithosphere and Asthenosphere.
The Lithosphere consists of the Earth's crust and the uppermost part of the mantle. It contains the tectonic plates. The Asthenosphere sits beneath the lithosphere and is a semi-fluid layer where heat convection occurs, driving tectonic movement.
Explanation:The Lithosphere and the Asthenosphere are two different layers of the Earth. The Lithosphere consists of the Earth's crust and the uppermost part of the mantle. It is broken up into tectonic plates; these plates are moving apart in some areas, like the Atlantic Ocean, and being forced together in others, such as off the western coast of South America. The Asthenosphere, on the other hand, is located directly below the lithosphere and is part of the upper mantle. It is regarded as the 'hot, weak layer' because of its physical state, which is plastic or semi-fluid. It is here that convection occurs, taking heat from the interior and transporting it to the upper mantle. This convection is the power source for the movement of the tectonic plates.
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Our bodies are "time capsules" that tell of critical moments in the history of our planet and of the distant past in ancient oceans, streams and forests. explain.
What are the main differences between eukaryotes, prokaryotes, and viruses?
The nurse is asked to obtain a urine sample from a school-age child for a urine culture to detect bacteriuria. which intervention does the nurse implement?
igneous rock can be changed into which type of rock through the application of heat and pressure?
A. Foliated igneous rock
B. Non-foliated igneous rocks
C. Clastic sedimentary rock
D. Metamorphic rock
Answer:
D. Metamorphic rock
Explanation:
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Igneous rock can be changed into metamorphic rocks by the application of heat and pressure. This changes the shape and size of rocks. Thus, the correct option is D.
What is Metamorphic rock?
Metamorphic rocks formation occurs when igneous rocks are subjected to very high temperature, pressure, and hot mineral-rich fluids. This leads to change in the shape and size of the rocks.
Metamorphism is a process which changes the pre-existing rocks into new forms because of the increase in temperature, pressure, and chemically active fluids. Metamorphism may affect different types of rocks like igneous, sedimentary, or other metamorphic rocks.
During this process, new minerals form, with different sizes, shapes, and orientations than those of the original ones. The chemical composition of the original rocks may also change, as elements are carried away and some are added by the fluids flowing to the rocks.
Therefore, the correct option is D.
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