What is paleoanthropology?
a. it is practiced by archaeologists only.
b. it is defined as the study of early humans.
c. it is practiced by physical anthropologists only.
d. it is concerned with fossilized skeletal remains only.
e. it is defined as the study of fossilized non-primate mammals?
Hormones can interact with virtually any cell in the body except for the white blood cells.
a. True
b. False
Cyanobacteria can make their own food because they contain what
Unscarable this word
Prhhlllooyc
The discoveries of these men lead to development of what theory?
The discoveries by Greek scientists led to the development of the atomic theory, which was later empirically proven with modern chemistry. Other significant contributions during the Enlightenment and modern era, including Darwin's theory of evolution, also represent major developments in science that were influenced by observation and theoretical framework.
Explanation:The discoveries made by Greek scientists, and their use of inductive reasoning to create theories based on observations of natural phenomena, were essential in the development of the atomic theory. This theory, initially proposed by Greek philosophers Leucippus and Democritus, suggested that everything is made up of tiny particles called atoms. Although it took centuries and the advent of modern chemistry for the atomic theory to be empirically proven, these early contributions paved the way for our current understanding of matter and its composition.
In addition to atomic theory, other scientific and philosophical advancements during the Enlightenment and modern era, including Charles Darwin's theory of evolution, have been fundamental in shaping the scientific field. Whereas Darwin's work provided a systematic explanation for the existence of fossils and biological adaptation, setting the groundwork for modern biology and genetics. Collectively, these historical scientific achievements demonstrate the power of observation and theory in advancing human understanding of the natural world.
Which structural feature of the cell membrane allows molecules such as oxygen and carbon dioxide to diffuse into and out of the cell? *
The cell membrane contains proteins molecules.
The cell membrane contains cholesterol molecules.
The cell membrane is made up of two layers of phospholipids.
The cell membrane is anchored to the cytoplasm by the cytoskeleton.
The two layers of phospholipids in the cell membrane allow molecules like oxygen and carbon dioxide to diffuse into and out of the cell.
Explanation:The correct structural feature of the cell membrane that allows molecules such as oxygen and carbon dioxide to diffuse into and out of the cell is the two layers of phospholipids. The cell membrane is composed of a phospholipid bilayer which has a hydrophobic interior and hydrophilic exterior. This arrangement allows small, nonpolar molecules like oxygen and carbon dioxide to easily pass through the membrane by simple diffusion.
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What kind of inhibitor is a transition state analog usually classified as? noncompetive inhibitor?
A transition state analog is classified as a competitive inhibitor, not a noncompetitive inhibitor, because it competes with the substrate by structurally mimicking its transition state during an enzyme-catalyzed reaction.
Explanation:A transition state analog is commonly classified as a type of competitive inhibitor. This is because it structurally mimics the transition state of a substrate during an enzyme-catalyzed reaction. It competes with the substrate by binding to the active site of the enzyme, thereby inhibiting the enzyme and slowing down the reaction rate.
Essentially, it's not a noncompetitive inhibitor because a noncompetitive inhibitor changes the shape of the enzyme's active site by binding elsewhere, thereby preventing the substrate from binding.
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what region of the brain is responsible for complex thinking such as memory, speech, emotion, planning, and reasoning
If the na+ voltage-gated channels in a muscle cell open, what will be the result?
If planets do not produce their own light, how are we able to see mars and Venus in the night sky
Most stars have planets moving around them. Planets are round objects that orbit a star. They don't create their own light. They only reflect light from stars.
Reflect - to bounce back
An 83-year-old woman is placed at a small table in a dark corner of a trendy nightclub and is ignored by the staff. her shoddy treatment is probably due to her age, which is a(an) ______________ status.
The elderly woman's poor treatment is due to her ascribed status of age, leading to ageism. Ageism involves discrimination and stereotyping that result in unequal treatment and can affect health, healthcare, and financial security for the elderly.
The 83-year-old woman's shoddy treatment at the nightclub can be attributed to her ascribed status, which is a position in society that one is given involuntarily, often based on characteristics such as race, ethnicity, gender, and age. In this instance, the woman's age is an ascribed status that has likely led to her experiencing ageism. Ageism involves stereotypes and discriminatory practices that result in unequal treatment of individuals because of their age. In many societies, including the United States, there are negative stereotypes about older adults being incompetent, physically weak, and unattractive.
Thus, the elderly, especially women and people of color, often face additional challenges related to health, healthcare, and financial security, which are compounded by a lifetime of inequalities. This not only affects their experiences in social settings like nightclubs but also has serious implications for their overall quality of life.
Used medically, narcotics are _____ habit forming.
Narcotics used medically are highly habit-forming and can lead to drug addiction.
Explanation:Narcotics, when used medically, are highly habit-forming. They can lead to drug addiction, which is the compulsive use of a substance despite negative consequences that may arise from such use. Prescription pain relievers like oxycodone and vicodin, as well as illegal drugs like heroin, are examples of narcotics that have the potential to cause addiction.
During _______________ the homologous chromosome pairs separate in a random fashion leading to genetic diversity among the offspring.
If a cell is placed in a hypotonic solution, the net movement of water would be
Which arrangement is represented in the periodic table?
A.
a repeating pattern of outer electrons
B.
random order for atomic mass
C.
a reverse sequence for the number of neutrons
D.
repeating patterns of isotopes
Answer: Option (A) is the correct answer.
Explanation:
Elements that belong to the same group show similar chemical properties.
This is because elements that lie in the same group have same number of valence electrons. Hence, they tend to show same type of reactivity which makes them exhibit similar chemical properties.
For example, all alkali metals are very reactive in nature as all of them contain 1 valence electron.
Therefore, in a group pattern of outer electrons is repeating.
Thus, we can conclude that a repeating pattern of outer electrons is the arrangement which is represented in the periodic table.
Which component of blood allows oxygen from the air to move from the lungs to cells of the body?
Answer:
Red blood cells
What is the chance that a human zygote will receive?
A 39-year-old woman was the victim of a violent assault 1 year ago and, in the ensuing period, has developed the symptoms of posttraumatic stress disorder (ptsd). additionally, she has become heavily dependent on alcohol and required multiple visits to the emergency department for alcohol poisoning. what category of dual diagnosis does this client exhibit?
A _____________ is a professional who draws blood for tests, transfusions, donations and research.
explain how humans can influence biodiversity by changing the environment.
The sensory experience of bending one's knees or raising one's arms illustrates _____.
Science has shown how information can only be gathered by the known laws of physics and chemisty.
true or false
Explain how the structure of dna and proteins can be used to document
What happens to the electronegativity as you go down a column or group?
explain how the movement of tectonic plates, volcanic eruptions, earthquakes and climate change can contribute to the earth's species ability to adapt to changes in environmental conditions
Answer:
he is right
Explanation:)
Is the cell wall or cell membrane composed of two layers of lipids and proteins?
The noble gas present in relatively large concentrations in the atmosphere is
The noble gas present in relatively large concentrations in the atmosphere is Argon. It makes up about 0.93% of the Earth's atmosphere and is the most abundant among the noble gases.
Explanation:The noble gas that is present in relatively large concentrations in the atmosphere is Argon (Ar). This is because Argon makes up about 0.93% of the Earth's atmosphere, making it the most abundant noble gas. The noble gases are typically unreactive due to their full electron shells and include Helium, Neon, Argon, Krypton, Xenon, and Radon. Of these, Argon is the most common in our atmosphere due to its stability and the fact that it is produced in significant quantities through the radioactive decay of Potassium-40.
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Foods made with solid fats and/or added sugar are considered to contain empty calories because
written description of how carbon moves through the biosphere, atmosphere, hydrosphere, and geosphere.
The ________ cell is interposed in the pathway between the photoreceptors and the ganglion cells.
The majority of mass in living things come from 6 elements. From the options below select 4 elements that are most commonly found in a living things.
A.) Sodium
B.) Sulfur
C.) Nitrogen
D.) Chlorine
E.) Potassium