An oxygen atom with a charge of (+2) has ______________________.
a. two more protons than the neutral atom
b. two fewer protons than the neutral atom
c. two more electrons that the neutral atom
d. two fewer electrons than the neutral atom
Compare the parts of a lily (flower) and an apple (fruit).
Lilies and apples serve different roles in plant reproduction, with lilies being flowers that attract pollinators, and apples being fruits resulting from mature ovaries. Lilies have petals, sepals, stamens, and pistils, while apples have an exocarp, mesocarp, endocarp, and seeds. The main difference is their function and structure related to the plant's reproductive process.
Comparing the Parts of a Lily (Flower) and an Apple (Fruit)
Both lilies and apples are parts of plants but serve different purposes and have different structures. Let's break down their main components:
Main Parts of a Lily
A lily is a type of flower, which has several essential parts:
Petals: Often colorful to attract pollinators.
Sepals: Protect the flower bud before it opens.
Stamens: The male reproductive part, producing pollen.
Pistils: The female reproductive part, which includes the ovary, style, and stigma. Lilies are an example of a superior flower, where the ovary is above other flower parts.
Main Parts of an Apple
An apple is a fruit, which means it is a mature ovary that was once part of a flower. It consists of:
Exocarp: The outer skin.
Mesocarp: The fleshy part that we eat.
Endocarp: The inner part surrounding the seeds.
Seeds: Found inside the core of the fruit.
The fruit develops after pollination and fertilization, signifying the transformation from a flower's ovary to a fruit.
By comparing these two, we can see that while a lily focuses on reproduction through its vivid and structured flower parts, an apple represents the post-fertilization stage containing seeds for further plant growth.
In a lab you are conducting tests with various chemicals and neurotransmitter receptors. you notice that exposed frog muscle cells depolarize when you add the chemical nicotine to the acetylcholine (ach) receptors. what does this tell us about the relationship between neurotransmitters and their receptors?
Which is an example of an abiotic factor interacting with a biotic factor? Insects carry seeds to new places, which allow new plants to grow. People plant trees in a city park. A drought dries up a river, so deer have less water to drink. A fungus causes a grove of trees to die.
An example of an abiotic factor interacting with a biotic factor is a drought affecting the water supply for deer. Abiotic factors like temperature and water availability significantly influence the dynamics of ecosystems, affecting both the living organisms and the environment they reside in.
An example of an abiotic factor interacting with a biotic factor is a drought drying up a river, which consequently leads to deer having less water to drink. In this instance, the abiotic component (drought) has a direct impact on the biotic component (deer). Ecology examines these interactions extensively, noting that abiotic factors like temperature and water availability significantly affect the life and behavior of organisms within an ecosystem.
Additionally, an increase in rainfall would dramatically alter the ecosystem by affecting both abiotic and biotic components. Increased rainfall might enhance soil moisture and potentially support more aquatic habitats, which could lead to the growth of certain plant species, in turn influencing the types and numbers of animals that inhabit the area.
How does the second line of host defense relate to the warmth and redness of the skin around the wound?
Which is Not a feature associated with valley glaciers
Answer:
cirque
arroyo
horn
arête
Explanation:
Arroyo is the correct answer
Hope it helps!
what measurement best describes the results of a scientific experiment regarding volume
Suppose a group of bobcats that normally live and hunt in the tops of mountains, start hunting prey at the base of the mountain and move into the valley below. Which of the following will most likely happen to the prey in the valley? a. Their numbers will soon increase. b. Their numbers will soon decrease. c. They will move to the tops of the mountains. d. They will remain unchanged.
Answer:
A predator is an organism which kills other organism to obtain it as food, whereas as a prey is the inferior organism which is incapable of defending itself and being killed by the predator.
The group of bobcats being predating the prey at the top of the mountain when moves to valley below is likely to decrease the population of the prey in the valley because although the bobcat change the location of their habitat the urge for getting food by hunting will be retained in them.
Define accommodation. which part of the eye serves this function? how does its shape change with the distance between you and the object you are looking at?
Bacillus anthracis, the bacterium that causes the deadly disease anthrax produces thick endospores. What is the significance role of spore formation in the reproductive cycle of this bacterium?
Because the bamboo plant on which the panda feeds is now scarce naturalists are worried about their chances of survival
Final answer:
The subject of the question is the impact of bamboo scarcity on panda survival due to deforestation and other human activities, which is a matter of biological and environmental concern.
Explanation:
Human activities such as deforestation, pollution, hunting, and overpopulation are causing alarming declines in various species' populations. Bamboo, vital to the diet of pandas, is a monocarpic plant that flowers once after multiple years. Once flowering occurs, the bamboo plant dies, severely impacting the food source for pandas. These unique plants can take up to 70 years to reach this stage, forming extensive clones in the process. The scarcity of bamboo due to human-driven habitat destruction means that pandas could face difficulties in finding enough food to survive, which is a significant concern among conservationists.
Many species, such as tigers, gorillas, pangolins, and rhinoceroses are also suffering due to human activities. Contacting local wildlife organizations can be a crucial step in contributing to the conservation efforts necessary for the survival of these species.
Sodium chloride is made up of a positive sodium ion and a negative chloride ion. Therefore, it is an example of
Why are some oil tankers being built with two hulls? a. to make the tankers heavier b. to make the tankers easier to steer c. to help prevent nonpoint-source pollution d. to help prevent oil spills
Answer: Option d
Explanation: Some of the oil tankers are being built with two hulls in order to prevent the oil spillage.
The main problem that is associated with the transportation of the oil is its spillage because it is harmful for the environment, human beings, animals and moreover for the aquatic animals.
To prevent from these problems the oil tankers are being built with two hulls.
Which of the following statements is true?
a.Slow, deep breathing makes less gas available for gas exchange.
b.Breathing rate and depth do not affect gas exchange.
c.Rapid shallow breathing can reduce the amount of gas exchange without changing the total amount of gas moved in a minute.
d.Normal breathing rates and depth provide the most oxygen for exchange.
When you hyperventilate (breathe too fast), respiratory alkalosis (elevated blood ph) can occur, which can cause you to faint. a common but potentially dangerous method to reverse respiratory alkalosis is to hold a paper bag over your mouth and take normal breaths, thereby rebreathing the exhaled air. how might this method reverse respiratory alkalosis?
electron transport chain : _____ production :: Calvin cycle : _____ production
A neuron can fire up to a limit of about ____________ times per second
Cyclopropane is a highly strained molecule. why? select all that apply.
The cyclopropane molecule is highly strained due to the presence of bond angle 60. Another reason that makes it highly strained is the torsional strain that leads to the formation of eclipsed conformation of the hydrogen bond.
Further explanation:
Cyclopropane is an explosive, colourless gas that is used for medicinal purpose. It is a non-irritating to the mucous membranes and also affects respiration. It is highly strained molecule as the confirmation of cycloalkanes is stimulated by torsional angle, angle strain as well as steric edge.
Cycloalkanes are composed of more than three carbon atoms that are not flat molecule and they are puckered.
The three as well as four-membered ring compound consists of angle strain and also minimise the internal bond angles. Angle strain is formed due to the deviation of bond angles from an optimum tetrahedral angle such as 109.5ᴼ. Torsional stress is formed due to the eclipsing interactions while a steric strain is formed when the carbon atoms are forced towards each other.
Learn more:
Learn more about the treatment of eukaryotic cell with a drug https://brainly.com/question/10767798 Learn more about the proteins synthesis in a cell https://brainly.com/question/1420458 Learn more about exchange of gases by blood cells https://brainly.com/question/1213217
Answer Details:
Grade: Senior School
Subject: Chemistry
Chapter: Organic chemistry
Keywords:
Cycloalkanes, angle strain, torsional strain, puckered, tetrahedral angle, carbon atoms, deviation.
Why is a single base-pair deletion mutation within a protein-coding sequence more likely to be harmful than a single base-pair change mutation?
During the Cambrian period on Earth, the ___________ layer developed along with the massive production of oxygen.
A) ozone
B) ocean
C) mantel
D) carbon dioxide
Answer:
A) Ozone
Explanation:
I just took the test
2.What simple infection control procedure helped Dr. Ignaz Semmelweis save a number of lives in the 1800s?
Answer:
The correct answer is the - hand washing before lunch and clinical process.
Explanation:
Dr. Ignaz Semmelweis was a Hungarian physician that is known as father of the infection control by the hand washing. He is also known as the saviors of mothers as at that time mothers were dying after childbirth due to the infection.
Dr. Ignaz suggested the hand wash procedure before clinical procedures and eating helps in the saving life by preventing infection due to unhygienic hands.
Thus, the correct answer is - hand washing before lunch and clinical process.
- How "sartans" like Cardiosartan act in the renin-angiotensin-aldosterone system?
John and Pat are identical twins with identical DNA. John works in a movie theater, and Pat works as a lifeguard. They have very different skin pigmentation. Which is the best explanation of the difference?
The answer is:
A) Skin color, a polygenic trait, is also determined by environmental factors.
Hope it helps!
the first law of thermodynamics states that energy can't be created or destroyed. If people can't create energy, where do we get energy to do work
Organisms get energy from food (or sunlight for plants), converting it into ATP and usable forms, following the first law of thermodynamics—energy is transformed, not created.
The first law of thermodynamics, often referred to as the law of conservation of energy, states that energy cannot be created or destroyed; it can only be transferred or converted from one form to another. This principle applies universally to all energy transformations, including those within biological systems, where living organisms like humans derive energy from.
1. Metabolism: Organisms convert chemical energy stored in food (in the form of glucose, fats, and proteins) into usable forms such as ATP (adenosine triphosphate). ATP is the primary energy currency of cells and is used for various cellular processes and work.
2. Cellular Respiration: In aerobic organisms like humans, cellular respiration occurs in mitochondria, where glucose and oxygen are converted into carbon dioxide, water, and ATP. The breakdown of glucose releases energy that is used to synthesize ATP molecules.
3. Digestion and Absorption: The process starts with digestion, where complex molecules in food are broken down into simpler forms that can be absorbed into the bloodstream. These nutrients are then transported to cells where they undergo cellular respiration to release energy.
4. Photosynthesis (for plants): Plants and some bacteria convert light energy from the sun into chemical energy through photosynthesis. This energy is stored in glucose and other carbohydrates, which are then consumed by organisms higher up in the food chain.
What can we conclude about p. caudatum from this experiment?
This chart shows the types of ground tissue and their functions. mc012-1.jpgmc012-2.jpg Which row (A, B, C, or D) best matches each ground tissue with its function? A B C D
The right answer is A.
Let's resume Plant tissues and their roles:
* Meristems are devolved to growth by cell multiplication;
* The covering fabrics ensure the protection of the organs vis-à-vis the
external environment;
* Parenchyma represent the bulk of the organ volume; they are
formed of poorly differentiated cells and perform various functions:
chlorophyll assimilation, storage of reserves ...
* Support tissues are made of thick-walled cells of lignin or
cellulose, giving the organs a certain rigidity;
* The conductive tissues ensure the circulation of the sap, to the organs
aerial for raw or ascending sap, to underground organs for
sap developed or descending;
* The endoderm and the pericycle are two cellular bases surrounding the
central cylinder;
* The secretory tissues release various substances (nectar, latex ...).
The right answer is A.
Who reviews articles for peer-reviewed journals
Final answer:
Peer-reviewed journals utilize expert scientists to review articles, maintaining objectivity and advancing the field's knowledge; this system, while imperfect, is essential for vetting scientific research.
Explanation:
Articles for peer-reviewed journals are evaluated by other scientists, who are experts in the subject matter of the article. These peer reviewers rigorously assess the article's rationale, methodology, ethical standards, and the validity of its conclusions. Such a review process is crucial as it helps in advancing the discipline's knowledge and prevents the duplication of research findings, ensuring that each research article contributes new information to the scientific community.
The peer review system is maintained in anonymity, meaning that both the authors and the reviewers are unaware of each other's identities. This anonymity helps to maintain objectivity and reduce bias, which is especially important when high personal or financial stakes are involved. Instances of fraud, while not common, highlight the system's imperfections, emphasizing the need for integrity and honesty in scientific publication.
Peer review is not only a standard for scientific articles but also for grant proposals. This peer evaluation by qualified individuals ensures that the scientific work is original, significant, logical, thorough, and adds value to the field. While most scientific communication occurs through these rigorous channels, it is important to note that not all journals use a peer-review system; hence, the reliability of studies published without this process can be questionable.
Imagine that you are given some chemoorganotrophic bacteria to grow. what should you use as a source of energy for this type of bacteria? imagine that you are given some chemoorganotrophic bacteria to grow. what should you use as a source of energy for this type of bacteria? methane ammonia sugar hydrogen sulfide light
Stable isotopic analysis of oxygen from ice cores dating to the holocene indicates that:
The Milky Way is a _____ galaxy.
Answer:
Barred Spiral.
Explanation:
A barred spiral galaxy is a type of spiral galaxy which has a bar-shaped structure in the center which is made up of stars.
The milky way is a barred spiral galaxy because its appearance conforms to the classification of galaxies given by Hubble.
The milky way has spiral arms and a bulge in the center and one or more bars radiate out from this central bulge and hence it is a spiral barred type of galaxy.