Robert Hooke made this drawing after using a microscope to observe dead cork bark. What does Hooke's drawing show? A. Cell division
B. Cell organelles
C. Living cells
D. Cork cells
Answers
Answer:
THE Awnser is D
Explanation:
A.P.E.X
Answer:
d
Explanation:
dead cork cells
Related Questions
What happens when green plant leaves absorb energy from the Sun?
A. Plants get too warm.
B. Sugars are produced
C. More green color is produced.
D. Green leaves turn red.
Answers
Answer:B. Sugar are produced
Explanation: when green leaves absorb sunlight it is converted to Energy by photosynthesis.
Answer:
I'm pretty sure it's C.
Explanation:
Plants don't get to warm unless they don't have oxygen, sugars are produced, but only during all of photosynthesis, and green leaves don't turn red unless the season is changing. But sun light gives chlorophyll what it needs to produce that green color. Therefor, C is your answer.
The organelles of eukaryotic cells interact with each other to maintain homeostasis within the cell . The nucleus, endoplasmic reticulum, Golgi apparatus, chloroplast, and mitochondria, all contribute to proteins transport, packaging, export, and energy harnessing. According to the Endo, symbiotic theory, certain organelles are proposed to have evolved from free living bacteria that were engulfed by a larger cell. these organelles have multiple membranes, their own circular, DNA, and can replicate by binary fission. The origin of which organelles are likely explained using the Endo symbiotic theory?
Answers
Answer:Mitochondria
Explanation: The have their own DNA and can replicate on their own. Additionally they have a double membrane different from any other organelle.
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Which of the following conditions leads to hurricane season in the Atlantic region? Question 1 options: high pressure zones over the Atlantic Ocean high wind speeds in the upper atmosphere above the Atlantic Ocean warm waters in the Atlantic Ocean wind speeds in the Atlantic Ocean
Answers
Answer:
high wind speeds in the upper atmosphere above the Atlantic ocean
Answer:
High pressure zones over the Atlantic
Explanation:
Orchids have developed an elongated petal that holds nectar to lure pollinators into carrying their pollen. Only certain species, such as the sphynx moths, with a long proboscis, can reach the nectar. A honey bee that usually gathers nectar from flowers like dandelion smells the nectar and attempts to reach it but cannot due to its lack of a long proboscis. What barrier is this an example of? *
Answers
Answer:
Explanation:
This is an example of a mechanical barrier. The orchid has evolved a specific petal shape that holds nectar to attract only certain pollinators with a long proboscis, such as the sphynx moths. The honey bee, on the other hand, cannot reach the nectar due to its lack of a long proboscis. This mechanical barrier ensures that only specific pollinators can access the nectar and transfer pollen between flowers of the same species.
Orchids evolving an elongated petal that holds nectar to attract specific pollinators, such as sphinx moths with a long proboscis, while discouraging others, such as honey bees is an example of a physical barrier.
In this scenario, the physical characteristic of the elongated petal and the position of the nectar acts as a physical barrier to prevent honey bees from accessing the nectar.
The petal is elongated and the nectar is placed deep inside, which can only be reached by pollinators like sphinx moths with a long proboscis. Honey bees, which have a short proboscis, are unable to reach the nectar, thus creating a physical barrier.
This is an example of a natural selection process where the orchids have evolved a specific feature to attract only specific pollinators, which in turn increases the likelihood of successful pollination.
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DNA replicates in the
nucleus cytoplasm
endoplasmic reticulum
cell membrane
where does it replicate?
Answers
Answer:
Nucleus
DNA replication happens in the nucleus of human cells. It will also take place within mitochondrial matrix.
Explanation:
DNA replication occurs during the S-stage of interphase. DNA replication (DNA amplification) can also be performed in vitro (artificially, outside a cell). DNA polymerases isolated from cells and artificial DNA primers can be used to start DNA synthesis at known sequences in a template DNA molecule.
About:
In molecular biology, DNA replication is the biological process of producing two identical replicas of DNA from one original DNA molecule. DNA replication occurs in all living organisms acting as the most essential part for biological inheritance.
DNA replication takes place in the nucleus of the cell. Thus, the correct option for this question is A.
What is DNA replication?DNA replication may be defined as the process through which the genomic DNA successfully gets copied into cells during the mechanism of cell division. It is a process of creating two identical replicas of DNA from one original DNA molecule.
According to the context of this question, the process of DNA replication takes place during the S-phase of interphase. During this phase, the amont of genetic content doubles in the cell which is then separated into daughter cells equally followed by cytokinesis.
Therefore, DNA replication takes place in the nucleus of the cell. Thus, the correct option for this question is A.
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Which of the following is found in RNA but not in DNA?
a. guanine
b. thymine
c. uracil
d. cytosine
e. deoxyribose
Answers
Answer: C. Uracil
Explanation:
Option c. uracil is the nucleotide base that is found in RNA but not in DNA. RNA uses uracil instead of thymine, which is present in DNA.
Uracil and thymine are similar in structure but have different functions in RNA and DNA, respectively. RNA is involved in the transfer of genetic information from DNA to proteins, while DNA serves as the primary repository of genetic information in cells. The different nucleotides in RNA and DNA are essential for their Uracil unique functions, and the presence or absence of specific nucleotides helps to distinguish between these two types of genetic molecules.
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Alex was brought into the clinic by his
football coach that stated that Alex is
delirious, has intense cramps and has been
vomiting since he drank over 1000 mL of
water in under 45 minutes at football
practice.
Normally, the sodium concentration inside
the cells is equal to the sodium
concentration outside of the cell. However,
drinking this much water in a short amount
of time will cause the inside
of the cell to become diluted.
To compensate, water from
the outside of the cell will
rush into the cell, causing
water intoxication.
Which cell
organelle
allows this to
happen?
Answers
Answer:blood
Explanation:
The cell membrane allows water to rush into the cell when it becomes diluted due to excessive water intake.
The cell organelle that allows water to rush into the cell when it becomes diluted due to excessive water intake is the cell membrane. The cell membrane is selectively permeable, meaning it controls what substances can enter and leave the cell.
In this case, the dilution of the cell causes the concentration of solutes inside the cell to be lower than the concentration outside, leading to osmosis, where water molecules move from an area of higher concentration to an area of lower concentration through the cell membrane.
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Which of the following could be present in a eukaryotic cell? *
Ribosomes
Cell Wall
Cell Membrane
Nucleus
Membrane-Bound Organelles
DNA
Answers
Answer:
Ribosomes
Membrane-Bound Organelles
Nucleus
Explanation:
Each eukaryotic cell has a plasma membrane, cytoplasm, a nucleus, ribosomes, mitochondria, peroxisomes, and in some, vacuoles; however, there are some striking differences between animal and plant cells.
What societal change would likely cause a decrease in the birth rate?
A. Reducing the availability of family planning programs and contraception
B. Increasing the education and employment opportunities for women
C. Encouraging women to marry at a young age
D. Providing tax breaks to families for each child they have
Answers
Answer:
The societal change that would likely cause a decrease in birth rate is;
B. Increasing the education and employment opportunities for women
Explanation:
Changing the nature and proportion of participation of women in education and occupation by increasing the education and employment opportunities for women such that the way women participate in the labor force changes with more women obtaining a higher education by spending more time in schools and at their places of employment will lead to the following demographics
1) A higher number of university educated women
2) Increased urbanization, as more women gain employment in urban areas
3) Reduced fertility, as more time is spent by women in school and employment thereby reducing the available period for child bearing and birth rate
The person above is correct because the more education women has, the lesser chance at them having a baby(babies) out of the blue. They have more focus on education and this also risks marriage at a young age. Therefore the answer is indeed B.
glucose molecuels are small enough to pass through the membrane what transport has been used
Answers
Answer:
Because most cells, including erythrocytes, are exposed to glucose concentrations outside the cell that are greater than those within, facilitated diffusion leads in net glucose inward movement.
Mack's guatar fabrication shop producns low cost, highly durable guatars for beginners. Typicaly, out of the 100 gutars that begin productioh each monthy only 78 percent are considered good enous to sell. The other 22. percent are scrapped due to qually problems that are lidentfed after they have completed the production process. Each gular sels for $240. Becaute some of the production pecoss is automaled, esch gutar only requites 8 labor hours. Each enployee works an averoge of 160 hours per month. Labor is pald at 39 per hour, materials coat is $39 per gutay, and overtiest is $4.200. a. The labor productily rato for Mack's guitar Labrication shop is 5 per hour. (Enter your response rounded to fap decimal places.) b. Ahar some shady, the operation manager Darren Funk recommends 3 optons to improve the conpany's mulfasko productily. * Option ti increase the sales price by 15 percent - Option 2: impeove qualy so that eny 15 percent are sefective, er > Opton 3 reduce labor, materials, and overthead costs by 15 percont Finter your respone nounded to tak decimal places)
Answers
a. The labor productivity ratio for Mack's guitar fabrication shop is approximately 0.5 guitars per hour. b. The new sales price per guitar would be $276, the new percentage of guitars considered good enough to sell would be 85% and the new costs per guitar would be $ 33.15.
a) In order to calculate the labor productivity ratio,
Labor Productivity Ratio = Number of Guitars Produced / Total Labor Hours
Labor Productivity Ratio = 78 guitars / (160 hours/employee)
Labor Productivity Ratio = 0.4875 guitars per hour
Rounding to one decimal place, the labor productivity ratio for Mack's guitar fabrication shop is approximately 0.5 guitars per hour.
b) Option 1: Increasing the sales price by 15%:
The new sales price per guitar would be $240 + (15% of $240) = $276.
Option 2: Improving quality so that only 15% are defective:
The new percentage of guitars considered good enough to sell would be 100% - 15% = 85%.
Option 3: Reducing labor, materials, and overhead costs by 15%:
The new costs per guitar would be $39 - (15% of $39) = $33.15.
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Please use the graph to the
left to help you answer this
question.
Which of the following
describes the DEPENDENT
variable?
A. the group in which the conditions
were not changed
B. the variable that is changed by the
person doing the experiment and
located on the x-axis
C. the variable that is observed or
measured by the experimenter and
located on the y-axis
9
D. the observation that the
experimenter made that started the
experiment
Answers
Answer:
C
Explanation:
The dependent variable is always the outcome, data, or what is being measured in an experiment.
The wings of birds and butterflies have the same function they enable the organisms to fly which statement can be made about the evolutionary relationship between these organisms
A Birds and butterflies have homologous organs, which indicate they share a common ancestor
B birds and butterflies have analogous organs which indicate their wings evolved differently
C Where is the butterflies have Homologous organs because their wings involved from the same ancestral species
D . Birds and butterflies have analogous organs because they belong to the same species
Answers
The statement that can be made about the evolutionary relationship between these organisms is birds and butterflies have analogous organs, which indicates their wings evolved differently. The correct option is B.
What is the analogy?The analogy is having organs with similar functions, but their evolution and structure are totally different. Analogous organs are those organs that have similar functions but have different structures.
Examples are the fin of a whale and dolphin, the wings of birds and butterflies, etc. There is no evolutionary relationship between these organs and the structure is also different, this shows variation.
Thus, the correct option is B. birds and butterflies have analogous organs, which indicate their wings evolved differently.
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Hair grows in__________
Answers
Answer:
Hair grows in follicles
Answer:
Explanation:
follicicles
List three effectors that are used to lower your body's temperature
Answers
Answer: To lower your body's temperature, there are three main effectors that can be used: sweating, vasodilation, and shivering. Sweating allows the body to release heat through the evaporation of water on the skin's surface. Vasodilation dilates the blood vessels in order to increase blood flow to the skin and allow more heat to be lost from the body. Lastly, shivering increases metabolism and generates heat that can be released from muscle activity.
Explanation:
what type of experiment is an obsevational study?
Answers
Answer:
onsider someone on the busy street of a New York neighborhood asking random people that pass by how many pets they have, then taking this data and using it to decide if there should be more pet food stores in that areac
Explanation:
I googled it!! (study.com)
Explain why the plants from year 2-4 may not be
present in year 25-50
Answers
Answer:
ecological succession.
Explanation:
The plant may not be present in 25-50 years due to ecological succession. in ecological succession, the vegetation such as small plants that is present replaces by the more suitable vegetation such as trees because the vegetation (small plants) did not receive nutrients and sunlight so they are unable to grow and finally dies due to lack of basic needs. So that's why plant may not be present 25-50 years.
What is the Purpose of the "DNA extraction liquid"?
Answers
Answer:
plase bear with me i know this is a long answer
Explanation:
The purpose of DNA extraction liquid is to break open cells and dissolve cellular membranes, proteins, and other cellular components in order to release DNA from the cell. This is an essential step in DNA extraction procedures, as DNA is tightly packed within the cell and needs to be isolated and purified for further analysis.
There are many different types of DNA extraction liquids that can be used depending on the type of sample and the downstream application. Commonly used extraction liquids include phenol-chloroform, ethanol, and various commercial kits that utilize a variety of chemical agents and protocols.
The DNA extraction liquid typically contains a combination of reagents that help to disrupt the cell membrane and denature cellular proteins, allowing the DNA to be released and separated from other cellular components. These reagents can include detergents, salts, enzymes, and organic solvents. After the DNA has been released from the cell, it can be further purified using various methods, such as precipitation or column-based purification, depending on the specific application.
In summary, the purpose of DNA extraction liquid is to break open cells and release the DNA for further analysis. It is a critical step in many molecular biology and biotechnology applications, including genetic research, diagnosis of genetic diseases, and forensic analysis.
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Chyla’s mother is an educator, and Chyla saw how much her mother loved it when students were able to grasp difficult subjects. Chyla wanted a career that would be that satisfying. She was drawn to animals, though, and loved to learn more about how to take care of different creatures. As she went through school, Chyla kept the same interests and felt torn when it came down to deciding on a career path. In what career might Chyla be able to combine her two passions?
A.
a microbiologist in a veterinary science lab
B.
a professor at a veterinary college
C.
an inspector for a government organization
D.
an exotic animal veterinarian at a wildlife rescue
Answers
Chyla should be a professor at a veterinary college. So the correct option is B.
What is a veterinarian?
A veterinarian is a medical expert who safeguards both the health and well-being of animals and humans. They cure ill and damaged animals as well as detect and manage animal diseases. They also provide advice to owners on how to properly care for their pets and animals.
Veterinarians work in a variety of settings, including private practice, education, research, government service, public health, military duty, private enterprise, and others.
A veterinarian promises sincerely to apply his or her scientific knowledge and abilities upon taking the veterinarian's oath. It states "for the benefit of society, through the protection of animal health, the relief of animal suffering, the conservation of animal resources, the promotion of public health, and the advancement of medical knowledge."
Therefore the correct option is B.
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What happens during S phase?
O A. Chromosomes are duplicated.
O B. DNA separates into two nuclei.
O C. The cell splits in two.
O D. Cytoplasm is manufactured.
Answers
Answer: A. Chromosomes are duplicated.
Explanation: This is the correct answer on the quiz.
Chromosomes are duplicated in S phase. Therefore, option (A) is correct.
What do you mean by S phase?
Between G1 phase and G2 phase, DNA replication takes place during S phase of the cell cycle. The processes that take place during S-phase are tightly controlled and highly conserved.
The cell replicates its genetic material entirely during the S phase of DNA synthesis; At the end of S phase, a normal diploid somatic cell with a DNA complement of 2N acquires a DNA complement of 4N.
DNA synthesis or replication occurs during the S phase of the cell cycle, which occurs prior to the interphase. Before entering mitosis or meiosis, the cell's genetic material is replicated in this manner, leaving enough DNA for daughter cells to divide.
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Which type of event is thought to have caused most species on Earth to have become extinct?
A. Air pollution
B. Volcanic eruptions
C. Climate change
D. Human activities
Answers
The type of event that is thought to have caused most species on Earth to become extinct is volcanic eruptions. Volcanic eruptions, in particular, can lead to extinction through a process known as volcanic winter. Hence option B is correct.
What is Extinction?Extinction refers to the complete disappearance of a species from the Earth. It can occur naturally or due to human activities. Natural extinction events have occurred throughout Earth's history, such as volcanic eruptions, meteorite impacts, and climate change.
These events can cause significant changes in the environment, including changes in temperature, sea level, and atmospheric composition, which can have a severe impact on the survival of many species.
Volcanic eruptions occur when massive amounts of ash and gases are ejected into the atmosphere, blocking out sunlight and causing a drop in global temperatures.
This can lead to widespread crop failure and loss of habitat, which can lead to the extinction of many plant and animal species. The most well-known example of this is the extinction of the dinosaurs, which is thought to have been caused by a massive asteroid impact that triggered a period of intense volcanic activity.
Hence option B is correct.
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What is the name of this apparatus that zandile set up the following apparatus to investigate how temperature affects transpiration rate
Answers
Potometer is the apparatus which was used to investigate how temperature affects transpiration rate.
What is a Potometer?This is also referred to as transpirometer and it measures the level of water uptake in a leafy shoot.
Increase in temperature will lead to transpiration which can be detected by using the potometer to measure the water level.
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what is the most probable sequence in which the following clades of animals originated, from earliest to most recent? tetrapods vertebrates deuterostomes amniotes eumetazoans
Answers
The most probable sequence in which the following clades of animals originated, from earliest to most recent, is eumetazoans, deuterostomes, vertebrates, tetrapods, and amniotes.
This sequence is bаsed on the evolutionаry history of these clаdes, with eumetаzoаns being the eаrliest to evolve аnd аmniotes being the most recent. Eumetаzoаns аre the first group to hаve true tissues аnd orgаns, аnd deuterostomes аre а subgroup of eumetаzoаns thаt hаve а unique developmentаl pаttern. Vertebrаtes аre а subgroup of deuterostomes thаt hаve а bаckbone, аnd tetrаpods аre а subgroup of vertebrаtes thаt hаve four limbs. Аmniotes аre а subgroup of tetrаpods thаt hаve аn аmniotic egg, which аllows them to reproduce on lаnd.
So the sequence of the clades, from earliest to most recent, is eumetazoans -> deuterostomes -> vertebrates -> tetrapods -> amniotes
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How is genetic variation beneficial to a population ?
Answers
Describe the steps in which a gene in passed from parent to offspring. Make sure to describe how the gene is duplicated, separated, and given to the offspring.
Answers
Answer:
Mitosis occurs in somatic cells; this means that it takes place in all types of cells that are not involved in the production of gametes. Prior to each mitotic division, a copy of every chromosome is created; thus, following division, a complete set of chromosomes is found in the nucleus of each new cell. Indeed, apart from random mutations, each successive duplicate cell will have the same genetic composition as its parent, due to the inheritance of the same chromosome set and similar biological environment. This works well for replacing damaged tissue or for growth and expansion from an embryonic state. Because the genes contained in the duplicate chromosomes are transferred to each successive cellular generation, all mitotic progeny are genetically similar. However, there are exceptions. For example, there are genetic variations that arise in clonal species, such as bacteria, due to spontaneous mutations during mitotic division. Furthermore, chromosomes are sometimes replicated multiple times without any accompanying cell division. This occurs in the cells of Drosophila larvae salivary glands, for example, where there is a high metabolic demand. The chromosomes there are called polytene chromosomes, and they are extremely large compared to chromosomes in other Drosophila cells. These chromosomes replicate by undergoing the initial phases of mitosis without any cytokinesis (Figure 2). Therefore, the same cell contains thick arrangements of duplicate chromosomes side by side, which look like strands of very thick rope. Scientists believe that these chromosomes are hyper-replicated to allow for the rapid and copious production of certain proteins that help larval growth and metamorphosis
Explanation:
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Match the abnormal urinary constituent with the possible cause: diabetes insipidus.
A. Diabetes mellitus
B. Glomerulonephritis, severe hypertension, heart failure, often an initial sign of renal disease
C. Due to lack of adh receptors in the collecting duct
D. As in starvation and untreated diabetes mellitus match the abnormal urinary constituent with the possible cause: hemoglobin
A. Various: transfusion reaction, hemolytic anemia, severe burns, etc
B. Liver disease (hepatitis, cirrhosis) or obstruction of bile ducts form liver or gallbladder
C. Bleeding urinary tract (due to trauma, kidney stones, infection, or cancer)
D. Urinary tract infection
Answers
C. Due to lack of ADH receptors in the collecting duct
Diabetes insipidus is characterized by an abnormal urinary constituent related to the lack of antidiuretic hormone (ADH) receptors in the collecting duct. This condition causes the kidneys to be unable to properly concentrate urine, leading to excessive urination and increased thirst. The lack of ADH receptors in the collecting duct is the primary cause of this disorder, differentiating it from other urinary abnormalities like diabetes mellitus, glomerulonephritis, and hemoglobin-related issues.
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I need help with this biology worksheet
Answers
Answer:
Explanation:
I pretty sure its
4 Label the integumentary structures and areas indicated in the diagram hof Startow and Hai shaft dewel_hele ver dem Biol S. Label the layers of the epidermis in thick skin. Then, complete the statements that follow stolom Chambre - Wonfi๒๒า 96 10กว่า Se boste ww से Glands that respond to rising androgen levels are the glands are epidermal cells that play a role in the immune response b. c Tactile corpuscles are located in the d corpuscles are located deep in the dermis 6. What substance is manufactured in the skin and plays a role in calcium absorption elsewhere in the body
Answers
The integumentary structures and areas indicated in the diagram hof Startow and Hai shaft are labeled in the Biol S. The layers of the epidermis in thick skin are also labeled.
Which glands respond to rising androgen levels in the body?The integumentary structures labeled in the diagram hof Startow and Hai shaft would require visual reference to accurately label them.The layers of the epidermis in thick skin include the stratum corneum, stratum lucidum (only present in thick skin), stratum granulosum, stratum spinosum, and stratum basale.Glands that respond to rising androgen levels are the sebaceous glands, which secrete oily substances onto the skin. Langerhans cells are epidermal cells that play a role in the immune response, acting as antigen-presenting cells. Tactile corpuscles are located in the dermal papillae of the dermis, and they are responsible for detecting light touch and pressure.Pacinian corpuscles are located deep in the dermis and are sensitive to vibration and deep pressure.The substance manufactured in the skin that plays a role in calcium absorption elsewhere in the body is vitamin D. When exposed to sunlight, a precursor molecule in the skin is converted to vitamin D, which is then utilized in the absorption of calcium.
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In which type of environment are plants most likely to use a C4 pathway of carbon fixation?
cold and wet
cold and dry
hot and wet
hot and dry
Answers
Answer:
I would try the third one
the post darwinian view of the world included group of answer choices the age of the earth is billions of years old. species are related by descent. all of these. interplay of random variations and conditions of the environment produced environmental adapation.
Answers
The post darwinian view of the world included all of these.
Famous philosophers and biological scientists are believed to have suggested and declared post-Darwinian beliefs as instructional theories after the Darwinian Theory of Evolution was presented. Charles Darwin (1809–1882), an English naturalist, and others developed the Darwinism theory of biological evolution, which holds that all species of organisms arise and develop through the natural selection of minute, inherited variations that improve the individual's capacity for competition, survival, and reproduction.
Later, the term "Darwinism" was used to describe the particular ideas of natural selection, the Weismann barrier, or the core tenet of molecular biology. Although the phrase only ever relates to biological evolution, creationists have appropriated it to mean other things that are not biological evolution, such as the genesis of life or cosmic evolution.
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