What is the contribution made to the development of the microscope by Charles Spencer?
A. first to document careful observations of different cell types
B.identifying the first cell
C. used mathematics to improve the focus of the lens
D. created the first microscope
E. discovered the electron microscope
F. built microscopes capable of magnification of up to 1250 x using regular light
Health impact assessment: a tool to help policy makers understand health beyond health care
Answer:
Marketing
Explanation:
The field of genetics that studies the molecular mechanisms by which environments trigger genetic expression is known as:
Starch, which can be obtained from bread, rice, and potatoes, is a
The starch that is obtained from bread, rice and potatoes is a complex carbohydrate. A complex carbohydrate are being turned to or formed into glucose in which is essential for an individual in order to have energy that is important in our every day activities.
how are limestone and shells connected to the carbon cycle plz answer and fast
Limestone and shells are connected to the carbon cycle through the process of carbon sequestration. Marine organisms extract calcium carbonate from the water to build their shells, which eventually accumulate on the ocean floor and form limestone deposits. This process helps to remove and store carbon from the atmosphere.
Explanation:Limestone and shells are connected to the carbon cycle through the process of carbon sequestration. When carbon dioxide dissolves in water, it reacts with water molecules to form calcium carbonate, which is a major component of limestone and shells. Marine organisms, such as clams and corals, extract calcium carbonate from the water to build their shells. Over time, these shells accumulate on the ocean floor and form limestone deposits. This process helps to remove and store carbon from the atmosphere, contributing to the carbon cycle.
The test that determines the amount of different types of immunoglobulins in the blood is ________.
How does heat transferred through radiation different from conduction and convection /7622668/12287573?utm_source=registration
The three different ways of heat transfer include radiation, conduction, and convection of heat energy.
What are the processes of heat transfer?There are three ways in which heat is transferred into and through the atmosphere including radiation, conduction, and convection.
Radiation is energy which comes from a source and travels through the space at the speed of light. This energy has an electric field and a magnetic field which are associated with it, and has wave-like properties.
Conduction is the process through which heat energy is transmitted through collisions of particles between neighboring atoms or molecules. Conduction occurs more readily in solids and liquids, where the particles are more closer together than in that of gases, where particles are further apart from each other.
Convection is the process of heat transfer through the bulk movement of molecules within fluids such as gases and liquid molecules. The initial heat transfer between the objects and the fluids takes place through conduction, however the bulk heat transfer happens due to the motion of fluid.
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What is the term for an organism that makes its own source of chemical energy?
Are characterized by being mostly aquatic and microscopic, having zoospores and gametes with flagella.
When you perspire on a hot humid day drinking water will restore?
Dr. Jenkins just completed an experiment. The variable that was measured in her experiment is referred to as the _____ variable.
The variable that is measured in an experiment, which reflects the potential effect of the independent variable, is referred to as the dependent variable.
Explanation:The variable that was measured in Dr. Jenkins experiment is referred to as the dependent variable. In any experimental study, there are typically two kinds of variables: independent and dependent. The independent variable is the one that is manipulated or controlled by the researcher. In contrast, the dependent variable is what the researcher measures to see the effect of the independent variable. For instance, in a study exploring the effect of study hours on test scores, the amount of studying would be the independent variable (as it is what is being changed or controlled), while the test scores would be the dependent variable (as it is the outcome that is being measured).
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The nurse is caring for a patient who has been diagnosed with pneumonia. the patient reports intermittent episodes of cough accompanied with thick yellow sputum. on auscultation, the nurse finds abnormal lung sounds (crackles) in the left base and both upper lobes. a chest x-ray reveals infiltrations in both upper lobes and the left lower lobe. which instructions given by the nurse are appropriate for this patient? select all that apply.
What major geographic event took place during the Mesozoic Era?
Which cells does the nurse identify as producing thyrocalcitonin hormone?
The measure of an organism's ability to compete in the struggle for existence is known as
What law BEST explains why we would expect 75% of the offspring to have large teeth? A) Law of Dominance B) Law of Segregation C) Law of Filial Generations D) Law of Independent Assortment
Correct answer: A). Law of Dominance
The Mendel's law of dominance states that when a cross is done between the parents that are true for characteristics traits, then under such a situation only one of the trait will be dominant and appear in the next generation, and the other will be hidden. It will appear in the trait that is dominant.
The alleles that are expressed in are called as dominant while the characteristics that do not got express is called a recessive trait.
Microbial mats differ from biofilms in that they __________.
a chunk of an asteroid that has broken off in outer space is called a
Silicon dioxide, SiO2, is a(n) _____.
Answer:
The correct answer would be- compound.
Explanation:
SiO2 or silicon dioxide is an oxide of silica that is a compound commonly known as silica. It is normally present in quartz and in different organisms naturally.
It is a major constituent of the sand. This compound has two molecules of oxygen and one molecule of silica and one of the abundant compounds present on the earth.
Thus, the correct answer is - compound.
Which type of microscope should sherman use to try to see the 3-dimensional shape of a virus in the patient's sample?
Answer: Scanning electron microscope
Explanation:
How has nearly all the food we eat been "genetically modified" in the broadest sense of the term?
how do you make babies
What type of a trait results in the large variation in shoe size among humans?
Which enzyme is responsible for unzipping the dna double helix?
The enzyme responsible for unzipping the DNA double helix is DNA helicase.
What is DNA?It stands for deoxyribonucleic acid and is a genetic material.It is a long chain of polynucleotide.Each nucleotide consists of: deoxyribose sugar (carbon-containing compound), phosphate group and nitrogenous bases (nitrogen-containing compound).Nitrogenous bases is of two types: Purines (consisting Adenine and Guanine) and Pyrimidine (consisting Cytosine and Thymine).It is a double helical structure in which Adenine pairs with Thymine by forming two hydrogen bonds whereas Guanine pairs with Cytosine by forming three hydrogen bonds.In order to start replication this DNA helix should be unwind. This is done with the help of enzyme DNA helicase.What is DNA helicase?"It is a class of enzymes that catalyze the separation of duplex nucleic acids into single strands in an ATP-dependent reaction."Hence, the enzyme used for unzipping DNA double helix is DNA helicase.
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How did whales evolve from land mammals? Reason
Which of the following would mostlikely increase the rate of photosynthesis?
A. Decreasing the temperature within the plant's environment B. Decrease the availability of water to the plant C. Changing a plant's light source to a lower brightness D. Exposing a plant to a higher light intensity
Within ecosystems, high quality energy is constantly ____.
a. being recycled
b. becoming low quality energy
c. being destroyed
d. becoming matter
e. being made
As a result, the amount of energy delivered diminishes as we travel up the trophic levels. In the food chain, grass has the most energy and lions have the least. Thus, option B is correct.
What alters in change in quality of energy in an ecosystem?The result is that the lowest quantity of energy is accessible to carnivores (secondary consumers) that feed on herbivores and detritivores, as well as those that devour other carnivores (tertiary consumers).
To create organic matter from carbon dioxide and water, producers like plants, algae, and cyanobacteria utilize the energy from sunshine.
A trophic pyramid is a basic interactional structure shared by all biological populations.
Therefore, High-quality energy is constantly converting to low-quality energy inside ecosystems.
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The irregular ridge on the midline of the scrotum, formed from fusion of the urethral folds during development is the
which function function for prokaryotes is described by binary fission?
Answer:
Binary fission or bipartition is a way of asexual reproduction
Explanation:
Most bacteria depend on binary fission to spread. Conceptually, this process is simple; The cell simply needs to grow twice its size and then divides into two. But, in order to remain viable and competitive, the bacteria have to divide at their own time, in their own place, and they must provide each stem. The cell division of the bacteria is studied in many parts of the world. This research is revealing the genetic mechanisms that direct and regulate bacterial cell division. Understanding the mechanisms of these processes is of great interest because this allows the development of chemical products and new antibiotics aimed at interfering with the cell division of bacteria.
Before binary fission occurs, the cell must copy its genetic material (DNA) and deposit it at the ends of the cell, likewise copying the different types of proteins that the new cell division machinery will include.
To study cells with a light microscope different types of stains are usually available. why is it generally more useful to stain eukaryotic cells than prokaryotic cells?