Answer:
a
Explanation:
In 1940 matthew and marion stirling found ________ at the site of ________.
In 1940, Matthew and Marion Stirling found a series of stone carvings and monuments at the La Venta site in Mexico. This site is significant in history because it was a major location of the Olmec civilization.
Explanation:In 1940, husband and wife archaeologist team, Matthew and Marion Stirling, discovered a series of stone carvings and monuments at the La Venta site in Mexico. The La Venta site is notable for being one of the primary locations of the Olmec civilization, one of Mesoamerica's earliest and most influential cultures. The Stirling's findings at La Venta included upright stone monuments or 'stelae', altars, and large stone heads, which have since become iconic representations of the Olmec civilization.
In 1940, Matthew and Marion Stirling found artifacts at the site of Machu Picchu, a fifteenth-century Incan site located in Peru.
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what lipids make up the cell membrane? how many layers does it hare? what are the functions of the cell membrane?
The Cell membrane is a continuous double layer of lipid molecules in which membrane proteins are embedded. The cell membrane regulates the transport of materials entering and exiting the cell.
The cell membrane, also known as the plasma membrane, is found in all cells and serves to separate the cell's interior from the outside environment. A semipermeable lipid bilayer forms the cell membrane. The cell membrane controls the flow of materials into and out of the cell.
The cell membrane is mostly made up of lipids, specifically phospholipids. Phospholipids are made up of two hydrophobic (water-repelling) tails and a hydrophilic (water-loving) head. The hydrophilic head has a phosphate group that attracts water, whereas the hydrophobic tails have fatty acid chains that repel water.
The cell membrane primary roles are Selective permeability, Maintaining cell integrity, Cell signaling, Cell adhesion, Cell recognition.
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If it is not watered, a tulip plant wilts because it
A tulip plant wilts when it is not watered because it loses turgor pressure and cannot properly perform photosynthesis. Watering restores turgor pressure and enables photosynthesis.
Explanation:Turgor pressure is the force within the cell that pushes the plasma membrane against the cell wall, and it is chiefly maintained by water. So, when a plant doesn't get enough water, it loses this pressure and starts to wilt.
Moreover, water is crucial for the plant's ability to perform photosynthesis. This process, which involves converting sunlight into chemical energy, requires water. When a tulip plant doesn't have enough water, it will stop photosynthesizing for extended periods until it has adequate water to resume doing so. Thus, watering the wilted plant restores both turgor pressure and its ability to photosynthesize.
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Some plants (grasses) tend to contain a greater concentration of chlorophyll than others (pines). can you develop a hypothesis to explain this? would it be testable?
The element argon has _____ valence electrons. (Input only a whole number, such as 7.)
Answer:
18
Explanation:
What do the properties of waves moving through aquatic environments tell us about the organisms living in those environments?
As someone moves up the managerial hierarchy, which skills become relatively more important?
What are the three main concerns with nuclear energy?
Are factors related to climate, such as rainfall and temperature, biotic, or abiotic factors?
Which of the following best describes the interaction between Earth’s crust and living organisms?
a.
Raw materials essential for life are cycled through Earth’s crust.
b.
Fossil fuels are a valuable energy source for the biosphere.
c.
The continental crust allowed the evolution of life on land.
d.
The crust recycles the organic materials in sedimentary rock.
Answer: b. Fossil fuels are a valuable energy source for the biosphere.
Explanation:
The living organisms are dependent upon the earth crust for their food and resource needs. The earth crust is mined for a variety of inorganic and organic reserves like minerals, fossil fuels like petroleum, gasoline, natural gas and coal. The fossil fuels are non-renewable resources which are produced after million's of years the complete degradation and decomposition of the organic matter of dead animals and plants. This act as source of energy by the living organisms in biosphere.
Question 1 vascular plants are divided into two main groups: seedless vascular plants, including ferns and club mosses; and seed plants. the seed plants are further divided into gymnosperms (seed plants that do not produce flowers) and angiosperms (seed plants that produce flowers). part a - gymnospe
Vascular plants are divided into seedless vascular plants and seed plants. Seed plants are further classified into gymnosperms (no flowers produced) and angiosperms (flowers and seeds produced). Examples include pines and fruit trees respectively.
Explanation:Vascular plants are predominantly divided into two core groups: seedless vascular plants and seed plants. The seedless vascular group includes species such as ferns and club mosses. The seed plants are further classified into gymnosperms and angiosperms. Gymnosperms are plants that produce seeds but do not produce flowers, while angiosperms are plants that produce both flowers and seeds. Notable gymnosperms include pines and spruces, whereas examples of angiosperms include fruit trees and flowering plants.
Vascular plants are divided into two main groups: seedless vascular plants, which include ferns and club mosses, and seed plants. Seed plants are further divided into gymnosperms, which are seed plants that do not produce flowers, and angiosperms, which are seed plants that do produce flowers.
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plants utilize chlorophyll containing chloroplasts and mitochondria. what is the purpose of motochodria when a cell already has chloroplasts?
Answer:
its b to turn sugars into energy
Explanation:
i got it right
Which statement is an example of mutualism? Bees sting other organisms when they sense danger. Bees pollinate flowers while obtaining nectar. Bees have black and yellow stripes that warn other organisms of danger. Bees help maintain an ecosystem’s native cacti species through pollination. NextReset
Compression fractures associated with osteoporosis of vertebral bodies can distort the normal thoracic curvature of the vertebral column in a posterior direction. such a distortion is called
For a particular species of wolf, 55% are female, 20% hunt in medium-sized packs, and 15% are both female and hunt in medium-sized packs. the proportion of wolves that are female but do not hunt in medium-sized packs is
1. Probability of neither female nor hunting in medium-sized packs: 0.40.
2. Probability of female given hunting in medium-sized pack: 0.75.
1. To find the probability of wolves that are neither female nor hunt in medium-sized packs, we can use the principle of complementary probability. We start by finding the probability of wolves that are either female or hunt in medium-sized packs or both, then subtract this probability from 1 to get the probability of wolves that are neither female nor hunt in medium-sized packs.
Probability of wolves that are either female or hunt in medium-sized packs or both:
= Probability of females + Probability of hunting in medium-sized packs - Probability of both
= 55% + 20% - 15%
= 60%
Now, the probability of wolves that are neither female nor hunt in medium-sized packs:
= 1 - Probability of wolves that are either female or hunt in medium-sized packs
= 1 - 0.60
= 0.40
Therefore, the probability of selecting a wolf that is neither female nor hunts in medium-sized packs is 0.40.
2. To find the probability of selecting a wolf that is female, given that it hunts in a medium-sized pack, we use conditional probability. We divide the probability of wolves that are both female and hunt in medium-sized packs by the probability of hunting in medium-sized packs.
Probability of selecting a female wolf given that it hunts in a medium-sized pack:
= Probability of both / Probability of hunting in medium-sized packs
= 15% / 20%
= 0.75
Therefore, the probability of selecting a female wolf given that it hunts in a medium-sized pack is 0.75.
Complete Question :
For a particular species of wolf, 55% are female, 20% hunt in medium-sized packs, and 15% are both female and hunt in medium-sized packs. Answer to 2 decimal places, not as a percent.
1. What is the probability of wolves that are neither female nor hunt in medium-sized packs?
2. What is the probability of selecting a wolf that is female, given that it hunts in a medium-sized pack?
In an ocean ecosystem, which is necessary to begin a food web?
Answer:
Phytoplankton
Explanation:
Formed by unicellular eukaryote microalgae, phytoplankton is defined as the portion of planktonic organisms capable of photosynthesis, constituting the basis of the food chain in aquatic ecosystems. For this reason, we can say that in an ocean ecosystem, phytoplankton production is necessary to start a food chain.
Phytoplankton are composed of individuals from different taxonomic groups that have some common characteristics: they all have individualized nucleus and complex organelles in their cytoplasm, as well as photosynthetic pigments (chlorophyll a, b, carotenoids). These organisms, predominantly autotrophic, can also ingest particles, being characterized in some cases as myxotrophic.
The two main human sources of primary air pollutants are:
What is the expected effect of hyperventilation on heart rate? why does this change occur?
Drag each tool below into the box corresponding to the step in the dmaic cycle where it is most likely to be used.
Define (articulate the problem, objectives, resources, project, etc):
-Quality Circles
-Flow charts
Measure (collection of data, establish base lines for improvement):
-Pareto Charts
-Check Sheets
Analyse (identify, validate):
-Cause-and-effect diagrams
Improve (test and implement solutions):
-Brainstorming
Control (monitoring improvements and ensure continuing success):
-Control Charts for new Process
John and sue are expecting a child, but are concerned about a rare autosomal recessive disease that is present in both of their families. in the pedigree below, john is represented as individual iii-11 and sue is represented as individual iii-12. john\'s sister, iii-10, and sue\'s brother, iii-13, both do not show evidence of the disease, but john\'s paternal grandmother and sue\'s maternal grandfather both had the disease. assign the appropriate symbol to each individual in the pedigree.
From this information, John and Sue have a 25% probability (1 in 4) of having a child with the disease (aa), a 50% probability (2 in 4) of having a child who is a carrier (Aa), and a 25% probability (1 in 4) of having a child who is neither affected nor a carrier (AA). This is figured through a Punnett Square analysis of two heterozygous carriers (Aa x Aa).
In this, we are dealing with a pedigree that represents an autosomal recessive disease. Let's first understand the symbols used in a pedigree:
Squares represent males and circles represent females.A horizontal line between a male and a female indicates marriage or mating.Vertical lines connected by a horizontal line indicate siblings.Shaded symbols represent individuals who are affected by the disease.In order to assign the appropriate symbols to each individual, we need to identify their genotypes. Since the disease is autosomal recessive, it means that the disease allele is represented by 'a', and the normal allele is represented by 'A'. Therefore:
AA (homozygous dominant) means the individual does not have the disease and is not a carrier.Aa (heterozygous) means the individual does not have the disease but is a carrier.aa (homozygous recessive) means the individual has the disease.Given the information:
John (iii-11) and Sue (iii-12) do not show evidence of the disease but have a family history of it. Therefore, they are likely heterozygous carriers (Aa).John’s sister (iii-10), who does not show evidence of the disease, is likely also Aa, since the disease is present in the family but she herself is unaffected.Sue’s brother (iii-13) also does not show evidence of the disease and is likely Aa for the same reason as John’s sister.John’s paternal grandmother and Sue’s maternal grandfather had the disease, meaning they are aa.With this knowledge, we can deduce the following genotypes:
iii-11 (John): Aa (heterozygous carrier)iii-12 (Sue): Aa (heterozygous carrier)iii-10 (John’s sister): Aa (heterozygous carrier)iii-13 (Sue’s brother): Aa (heterozygous carrier)John’s paternal grandmother: aa (homozygous recessive)Sue’s maternal grandfather: aa (homozygous recessive)Why must predators in ecosystems with low npp cover huge ranges to survive?
The idea that species evolve at a slow constant rate is called
Answer: The correct answer is -
Gradualism.
Gradualism can be described as an evolutionary theory according to which evolution of organisms/species proceeds continuously at a slow and steady rate that is without any sudden formation of new biological features or sudden formation of new species from one generation to the next generation. The approach in which Charles Darwin proposed the emergence of new species (over many generations) from already existing species is attributed to gradualism.
In other words, species evolving at slow and constant rate is known as gradualism.
Identify how a hormone molecule performs its function.
What three events occur during the light reactions of photosynthesis?
is the spinal cord part of the peripheral nervous system
An advantage allowing the seed plant to greatly surpass the seedless vascular plants in colonizing the land was the evolution of:
"which part of the brain controls the autonomic nervous system?"
The hypothalamus is the key part of the brain that controls the autonomic nervous system, managing involuntary functions and maintaining homeostasis.
Explanation:Which part of the brain controls the autonomic nervous system?The autonomic nervous system (ANS) manages involuntary functions such as heart rate, blood flow, and digestion. The hypothalamus is the primary structure in the brain that coordinates these functions. The hypothalamus integrates sensory information and cognitive processes to manage the ANS. It sends signals via the medial forebrain bundle and the dorsal longitudinal fasciculus to brain stem and spinal components of the ANS. This integration allows for the control of the lungs, heart, smooth muscle, and glandular functions without our conscious input. It is crucial for maintaining homeostasis in the body through its regulation of the sympathetic and parasympathetic nervous systems, which have often opposing effects to balance the body's internal environment.
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Large herbivores migrate to find____.
more suitable temperatures
safe breeding grounds
food and water
Answer: Food and water
Explanation: Every life form on earth survives because of food and water. It is the basic need and cannot be ignored by an organism.
The larger herbivores will migrate to another places in search of food and water. Huge body have huge requirement of energy and hence, this requirement will be fulfilled only food and water.
Why do people with “inherited cancer” often develop cancer at a relatively young age
Which autonomic nerve innervates the urinary bladder, uterus, and external genitalia?
Answer:
Autonomic splanchnic nerve innervates the urinary bladder, uterus, and outside genitalia, thoughtful nerve that begins from the paravertebral thoracic ganglia, however does not innervate thoracic viscera, but rather stomach.
Explanation:
There are two splanchnic nerves: more noteworthy (of the V-IX ganglia) and minor (of the X and XI ganglia). In some cases, a third shows up, the most caudal, called imo (ganglion XII). Every one of them end in the celiac plexus.Dysautonomia or autonomic brokenness is a condition in which the autonomic sensory system (ANS) does not work legitimately. ... Various illnesses can highlight dysautonomia, for example, Parkinson's malady, HIV/AIDS, different framework decay, autonomic fa