This plant produces cones but not flowers. To which of the following groups does this plant belong?
Answer: Gymnosperm
Explanation:
Gymnosperm are the flowerless plants that does not produce flowers but only produces cones.
The term gymnosperm means naked seeds. The seeds of the gymnosperm are not encased within an ovary.
They cones of the plant sit exposed to the surface of the leaf like structure known as bracts.
Example: Conifers, cycads, Ginkgo,
Which characteristics work well in a dichotomous key?
a) smooth or rough
b) green or round
c) triangle or purple
d) tall or bumpy
The correct answer is:
a) smooth or rough
Explanation:
A dichotomous key is a tool that facilitates the user to ascertain the status of items in the natural world, such as trees, wildflowers, mammals, reptiles, rocks, and fish. Keys consist of a series of choices that lead the user to the correct name of a given item. "Dichotomous" means "split into two parts.
The only foods we need to eat are meat, milk, cheese, eggs, and potatoes. true of false
Answer:
False
Explanation:
I recommend eating mostly vegetables, fruit, and whole grains, healthy fats, and healthy proteins. Drinking water instead of sugary beverages. It’s also important to stay active and maintain a healthy weight.
Which option associates a type of animal cell with the genetic condition of another kind of animal cell?
Haploid cells contains a single set of chromosomes. A single set is represented as n and there are 23 chromosomes, also called the haploid number. In humans, n = 23. Somatic cells are not haploid, they are diploid (2n). However, we have another kind of animal cells that are haploid: the Gametes.
What ions must routinely move across cell membranes?
a. True
b. False. immunizations provide lifetime immunity against all preventable childhood diseases.
Final answer:
The statement that immunizations provide lifetime immunity against all preventable childhood diseases is false. Some vaccines require booster shots to maintain immunity, and not all diseases have been eliminated; thus, continuous vaccination is necessary to prevent resurgence and maintain public health.
Explanation:
The statement, "Immunizations provide lifetime immunity against all preventable childhood diseases," is false. Immunizations work by utilizing a component of a pathogen to elicit an adaptive immune response in the body, helping to develop immunity to diseases such as measles, mumps, and chickenpox. However, the duration of immunity can vary. Some immunizations may indeed provide lifetime protection, while others might require periodic booster shots to maintain effective immunity. Additionally, it's crucial to note that immunization usually requires a few weeks to develop full immunity after administration.
Immunization has been instrumental in preventing infectious diseases, saving millions of lives annually, and contributing to the eradication of smallpox and the near elimination of diseases like polio and measles. It's also important to acknowledge that not all diseases have been eliminated, and thus, immunization remains a crucial part of public health.
Furthermore, statements such as "Tuberculosis is a disease that we no longer have to worry about contracting here in the United States" and "Children do not need to be immunized because most diseases preventable by vaccine have been eliminated in the United States" are misconceptions. Continuous vaccination is necessary to keep these diseases at bay and to prevent their resurgence.
Water intoxication occurs when _______.
Water intoxication occurs when a person consumes excessive water in a short period, causing electrolyte imbalances, primarily sodium, in the body. Certain conditions like diabetes insipidus or habits like excessive alcohol consumption can contribute to this. This can disrupt the functions of vital organs, particularly the brain and kidneys, causing severe health issues.
Explanation:Water intoxication, or water poisoning, occurs when an individual consumes water in excessive amounts over a short period of time. Our body's balance between water and electrolytes can get disrupted, potentially leading to serious, even fatal, health issues. This is because excess water consumption can lower the concentration of electrolytes in the blood, particularly sodium, causing cells to swell. This swelling can cause multiple health problems, particularly affecting the kidneys and brain.
Conditions like diabetes insipidus, resulting from chronic underproduction of ADH or a mutation in the ADH receptor, can also contribute to water intoxication. In such cases, the kidneys cannot retain water, causing an imbalance. Also, alcohol consumption inversely affects ADH production, which helps our bodies retain water, further contributing to the risk of water intoxication.
Bodies, whether human, animal, or plant, manage their water and electrolyte balances through various mechanisms. In the absence of these mechanisms, or when they are damaged due to a condition or disease, the body's tendency to accumulate excess water can manifest as water intoxication.
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Which lists the correct order of processes that occur as water moves from a pond to a cloud and then forms rain
ya call this the water cycle.
This goes as follows:
Evaporation, Condensation, Precipitation.
69th answer btw lol
During what period of time would a behavior disorder most likely be treated with the surgical method called trephining?
PLEASE HELP ASAP!!!
1. Which of the following statements regarding science and technology is true? *
a) Scientific experiments are always aimed at meeting a human need.
b) Scientific inquiry is concerned with cost-effectiveness.
c) Science aims to answer questions whereas technology aims to solve problems.
c) Technology explains and predicts the physical, living and designed world.
2. Kolby wants to grow the tallest sunflowers. She would like to compare two plant foods on her sunflowers to see if either one will make her sunflowers grow taller. Kolby designs an experiment. She has three of the same type of sunflower plant. They all get the same amount of sun and water, and they are kept at the same temperature in the same type of soil. Kolby adds plant food A to plant A, plant food B to plant B, and no plant food to plant C. She measures the growth of the plants every week. *
Height measurements taken weekly during her experiment would be an example of
a) inferences.
b) qualitative data.
c) quantitative data.
d) background information.
3. __________ are a special class of proteins that help speed up chemical reactions inside living things.
a) Polypeptides
b) Amino acids
c) Polysaccharides
d) Enzymes
4. Which of the following is NOT one of the statements of the Cell Theory?
a) All living things are made of cells.
b) Cells are the building blocks of life.
c) All cells have a nucleus.
d) All cells come from existing cells
5. Which group of organisms does NOT have eukaryotic cells? *
a) Protists
b) Animals
c) Bacteria
d) Fungi
6. The main difference between active and passive transport is
a) active transport requires ATP to move substances across the nuclear membrane.
b) passive transport requires ATP to move substances across the nuclear membrane.
c) active transport requires ATP to move substances across the cell membrane.
d) passive transport requires ATP to move substances across the cell membrane.
7. The power of ATP is released when *
a) it is oxidized.
b) an oxygen group is lost.
c) a phosphate group is added.
d) a phosphate group is lost.
8. To maintain equilibrium, cells must be in a(n) _________ solution. *
a) hypertonic
c) hypotonic
c) isotonic
d) pure water
What are the structural components of myofibril?
A scientist studied four fossils of a marine mammal dating back to 50 million years, 45 million years, 40 million years, and 30 million years ago. Which fossil is most similar to the present-day mammal?
Heart sound 2 (choose all correct) is generated by the closing of the atrioventricular valves occurs when the aortic and pulmonary valves backfill with blood marks the beginning of isovolumic relaxation is associated with turbulence during atrial contraction
What is empirical evidence? A prediction of test results before an experiment A retest of experimental results to make them reliable A conclusion derived from evidence and logical reasoning Knowledge gained by observation or measurement
Answer:
The answer under is the incorrect answer I got wrong cuz of him there is proof under and the real answer is
Knowledge gained by observation or measurement
What clinical findings correlate with m.k.'s chronic bronchitis?
Newton's _________ Law of Motion states that "The acceleration of an object as produced by a net force is directly proportional to the magnitude of the net force, in the same direction as the net force, and inversely proportional to the mass of the object." Question 2 options: First or Fourth or Third or Second
Answer:
Second Law
Explanation:
Newton's second law states that acceleration is produced when a force acts on a mass. The greater the mass (of the object being accelerated) the greater the amount of force needed (to accelerate the object). The second law gives us an exact relationship between force, mass, and acceleration.
Force = Mass × Acceleration
1st law - tells us that acceleration and force are related
2nd law - tells us how acceleration and force are related
3rd law - tells us that all forces come in pairs
Molecules inside a liquid _____.
are packed closely together
have a random structure
can slip and slide past each other
are not attracted to one another
Answer:
The molecules inside a liquid can slip and slide past each other.
Explanation:There are three states of matter, these are solid, liquid and gases. The molecules in the matter at these states are arranged differently as the result of the chemical bonds that exist within the molecules. For liquids, the inter molecular forces that exist within them is such that they are able to move about to some extent, that is, the molecules of liquids are able to slip and slide past each other as they move about but they are still held together by inter molecular forces that exist within the liquid.
Wireshark's ability to capture traffic is greatly hampered by __________ because only packets destined to and from an attached system are forwarded.
In your laboratory journal, describe the two tools of molecular biology that are often described as the scissors and glue for manipulating dna. describe how these tools of molecular biology combined with plasmids can be used to make copies of an important gene.
The "scissors" of the molecular biology are: DNA Restriction enzymes.
A restriction enzyme is a protein capable of cleaving a DNA fragment at a characteristic nucleotide sequence called a restriction site. Each restriction enzyme thus recognizes a specific site. Several hundred restriction enzymes are currently known.
Naturally present in a large number of species of bacteria, these enzymes have become important tools in genetic engineering.
The "glue" of the molecular biology are: DNA ligase
In molecular biology, DNA ligases are ligase-class enzymes that catalyze the formation of a phosphodiester bond between two segments of DNA. DNA ligases are involved in several essential cellular processes of DNA metabolism: in DNA replication, suture of Okazaki fragments, and in DNA repair and homologous recombination.
The use of these tools in molecular biology: Cloning
Molecular cloning is one of the bases of genetic engineering. It consists of inserting a DNA fragment (called insert) in an appropriate vector such as a plasmid for example. The new plasmid thus created will then be introduced into a host cell, generally the Escherichia coli bacterium. This will then be selected and multiplied to obtain a large amount of the plasmid of interest. Cloning a gene involves inserting it into a plasmid. A clone will be the bacterial transformant that contains this particular plasmid. In this case we speak of clone because all the individuals of the bacterial colony are genetically identical. Molecular cloning is thus different from reproductive cloning (creating an individual genetically identical to another but of a different age) or therapeutic cloning (making tissues from stem cells to perform transplants compatible with the recipient).
Molecular cloning requires restriction enzymes capable of cleaving the DNA, and DNA ligase capable of re-gluing the DNA fragments. Ligase was isolated for the first time from T4 bacteriophage. This enzyme is involved in the repair and replication of DNA. It can bind DNA fragments with compatible sticky ends. At higher concentration, this enzyme is also able to bind two ends of DNA as shown here. T4 DNA ligase works using ATP and Mg ++. It has an activity optimum of 16 ° C, but remains active at room temperature.
The term scissors is used in molecular biology for an enzyme which is known as DNA restriction enzyme. The term glue is used in molecular biology for an enzyme which is known as DNA ligase. These enzymes are used for cutting and sticking the DNA during recombinant DNA technology.
Further Explanation:
Restrictionenzymes commonly known as the scissors in the molecular biology are the enzymes that are used to cut the DNA into smaller parts for cut the DNA from a target sequence. There are enzymes that act as molecular scissors and cut the DNA with overhanging strands. These strands are known as sticky ends. There are also the enzymes that cut the DNA with blunt ends and these ads are known as blunt ends. Restriction enzymes predominantly used in a molecular biology or recombinant DNA technology lab. EcoR1 is the most common example of a restriction enzyme.
DNA ligase commonly known as the molecular glue is used to stick the strands of DNA that are cut by the help of restriction enzymes. A single piece of DNA is formed by sealing the gap between the molecules which is only possible with the help of DNAligase.
Both these enzymes are widely used in the recombinant DNA technology laboratory for the cutting of specific part of DNA and the insertion of intended genes into the plasmid during DNA cloning.
Learn more:
1. Learn more aboutstructural component is found in DNA: https://brainly.com/question/334927
2. Learn more about DNA: https://brainly.com/question/2416343
3. Cell cycle and DNA replication: https://brainly.com/question/1600165
Answer Details:
Grade: High School
Subject: Biology
Chapter: Molecular Biology
Keywords:
Molecular scissors, molecular glue, restriction enzyme, DNA ligase, DNA strand, plasmid, DNA cloning, recognition sites, sticky ends, blunt ends.
What stage were most of the onion root tip cells in? does this make sense?
During interphase, the genetic material of a typical eukaryotic cell is
During interphase, the genetic material of a typical eukaryotic cell is diploid.
What happens in the interphase?Interphase is the period of the cell cycle that occurs between two cell divisions. Cells are the functional and structural units of living beings, being responsible for several activities directly related to the survival of an organism.
What is a diploid cell?Diploid (2n) cells are those that have two sets of chromosomes, that is, the chromosomes in these cells are arranged in pairs.
With this information, we can conclude that during interphase, the genetic material of a typical eukaryotic cell is diploid.
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During interphase in eukaryotic cells, the genetic material is in a relaxed state, characterized by two regions: darker-staining heterochromatin and lighter-staining euchromatin, with the latter showing active gene transcription. This phase includes growth, DNA replication, and final preparations for cell division.
Interphase in Eukaryotic Cells
During interphase, the genetic material of a typical eukaryotic cell is in a state of decondensation and is not visible as distinct chromosomes. This phase is crucial for the preparation of cell division and includes several subphases: Growth Phase 1 (G1), where the cell grows and performs routine metabolic processes; Synthesis Phase (S), where DNA replication occurs; and Growth Phase 2 (G2), where the cell makes final preparations for division. The eukaryotic chromosomes during interphase feature two distinct regions - heterochromatin, which is tightly packaged and stains darkly and euchromatin, which is less dense, stains lightly, and contains genes that are actively being transcribed.
Determine the approximate length of the rat's small intestine, which ends at the caecum. why is the small intestine so long? what is the function of the caecum? what is the function(s) of the large intestine (colon)? after examining the digestive system of the rat, can you tell if it is an herbivore or carnivore? how do you know?
Review Question: What is the basic pathway of food through the digestive system?
Answer: Mouth → esophagus → stomach → small intestine → large intestine →
anus
Which advance resulted from the development of a culture technique for muscle cells?
Answer:
C.) Polio Vaccination.
Explanation:
I got this question on my test
what is the most common task done by forensic odontologists?
The therapeutic effect of insulin in treating type 1 diabetes mellitus is based on which physiologic action
Final answer:
The therapeutic effect of insulin in treating type 1 diabetes mellitus is due to its role in promoting glucose uptake into cells and facilitating cellular respiration, reducing blood glucose levels.
Explanation:
Therapeutic Effect of Insulin in Type 1 Diabetes Mellitus
The therapeutic effect of insulin in treating type 1 diabetes mellitus is derived from its physiologic action on various cellular functions. Primarily, insulin facilitates the uptake of glucose into cells, which enables the cells to utilize glucose for cellular respiration. This process significantly reduces blood glucose levels. Insulin also assists in the transport of other molecules like amino acids, potassium (K+), calcium (Ca2+), phosphate (P), and nucleotides across the cell membrane. Insulin's action begins when it binds to the insulin receptor, which is a transmembrane protein located on the cell's plasma membrane. In people with type 1 diabetes mellitus, pancreatic insulin production is inadequate, resulting in high blood glucose levels. Insulin therapy replaces the missing hormone and reinstates its vital functions in glucose regulation.
Put all of the above household items in order from lowest to highest pH. A) Lemon juice, water, Tums B) Water, Tums, Lemon Juice C) Water, Lemon Juice, Tums D) Tums, water, lemon juice
Answer is A. Acids have a pH lower than 7.0. Water is a weak acid, making it the lowest.
pH levels:
Lemon- 2.0
Water- 7.0
Tums- 5.0
A solution's pH is a significant indicator of its chemical composition. The pH can have an influence on the biological operations that occupy place, the behavior of bacteria, and the conduct of chemicals. Thus, option A is correct.
What are the ranges varies of acid and bases in pH scale?The scale runs from 0 to 14, with neutrality represented by 7. PH levels below 7 indicate acidity, whereas pH values above 7 suggest baseness.
In realism, pH is a measure of the magnitude of complimentary hydrogen and hydroxyl ions in water.
Before and after the reaction, count the hydrogen atoms on each component to determine if it is an acid or a basic.
That substance is acid if the hydrogen content has dropped (donates hydrogen ions). That material is the base if there are more hydrogens now (accepts hydrogen ions).
Therefore, Lemon juice having minimum pH 2.0 and water- 7.0, Tums- 5.0
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Decomposers and detritivores break down organic material to help form topsoil. which layer of soil contains the decomposers and detritivores that aid this process?
Slow waves of the intestine are conducted through what type of cells? gastric cells microflora cells sxr cells cajal cells
WILL GIVE BRAINLEST ANWSER
What do limiting factors control?
the size of an organism
the size of a population
the size of an ecosystem
the size of a habitat
Answer:
size of population
Explanation:
because limiting factor constraints a populations size and slows or stops it from growing.
The green color of tree leaves is due to green light energy reflected from ____. a. auxins c. chlorophyll b. carbon dioxide d. gibberellins