An ion is an atom or a molecule that has lost or gained one or more electrons. So the correct option is A.
What is an ion?An atom or molecule which has a charge is referred to as an ion. Usually, the number of electrons and protons in an atom is equal. While electrons are present in the atomic shells, protons are present in the nucleus.
Because, the electrons are negatively charged and the protons are positively charged, the loss of one or more electrons would mean that the atom will now be positively charged. This will be called a positively charged ion.
Also, the gain of one electron would mean a gain of an additional negative charge. So the atom will now be negatively charged and will be called a negatively charged ion.
This is true for an atom individually or an atom which is part of a molecule. In that case loss or gain of one electron would result in the development of a positive or negative charge on the molecule.
Therefore the correct option is A.
Read more about ions, here
https://brainly.com/question/1488567
#SPJ2
why is caffeine unlikely to cross through the phospholipid bilayer?
Because caffeine is a big polar molecule and it can't pass directly through the phospholypid bilayer so it needs to pass through a channel.
Whats TWO Answer Giving Brainliest To first Correct AnSwEr:D......... HELP PLS
Answer:
b and c :)
Explanation:
It's gonna be B & C - Stay indoors and protect yourself.
Which of these organisms would best survive if the measure pH level of the lake is 5.87
A) Bass
B) Mayfly
C)Perch
D)Reactivate
1) Which interaction illustrates a terrestrial-aquatic food relationship? *
O A. A bear eating a fish in a river
O B. A turtle burying eggs in the sand
O C. A fish eating plankton in the ocean
O D. A bird laying eggs in a nest in a tree
please help me if your right ill give you anything please hellppp
Answer:
C
Explanation:
An ecosystem food chain always starts with producers
Consumers then consume the energy from producers (prey on them)
Decomposers are organisms which break down dead material and provide energy to the environment for which producers can use which creates a looped cycle
A clear sign that a subduction zone occurs in the ocean is the existence of a ______________________. *
Answer:
Where two tectonic plates converge, if one or both of the plates is oceanic lithosphere, a subduction zone will form. An oceanic plate will sink back into the mantle. Remember, oceanic plates are formed from mantle material at midocean ridges.
answer asap!! please for question 10 which is the right answer
23. In a grassland ecosystem, organisms of the same species eat the same food. When there is a lack of rain, which is
MOST likely increased?
A carrying capacity
B population density
D competition for resources
C competition for space
Answer:
D competition for resources
Explanation:
1.- How does photosynthesis contribute to the survival of humans?
2.- Explain the effect cyanobacteria had on the early atmosphere of Earth and the evolution of life?
3.- Suppose chromosomes in skin cells are damaged by ultraviolet radiation. If the damaged gene does not affect the cell cycle, do you think the cell will become cancerous?
4.- How is mitosis involved in the healing of a wound?
5.- How is the cell cycle-related to the growth and maintenance of an organism?
6.- What role does differentiation play in the cell cycle?
7.- Explain the connection between the cell cycle and cancer development?
8.- Must the cell cycle always proceed in the same direction, or is it possible for the cell cycle to proceed in the opposite direction? Explain your reasoning.
9.- Explain how crossing over provides evidence to support the claim that meiosis increases genetic variation.
10.- Why is it important that human gametes have half a set of DNA instead of a full set of DNA?
11.- In what ways is ATP like a fully charged battery?
Answer: By storing carbon above and below the ground, the trees and plants in forests contribute to the production of oxygen as a byproduct of photosynthesis. ... Photosynthesis provides most of the oxygen that humans and animals breathe.
HELP PLEASE GIVING BRAINLIEST EXPLAIN YOUR ANSWER NO GO.OGLE
Answer:
B
Explanation:
18. Which of the following describes a community?*
a. The plants, animals, fungi, and bacteria living in an area
b. The plants, animals, fungi, bacteria, rocks, sunlight, water, and climate in an area
C. A group of brown pelicans that live in the same area and reproduce
d. When a snake and a hawk compete for the same prey item.
6. Which form of renewable energy converts sunlight into electricity?
hydroelectric
solar power
geothermal
biomass
7. What renewable biomass fuel source has been used for thousands of years?
corn
straw
sugarcane
wood
8. Which renewable form of energy is found in the Earth's crust?
coal
petroleum
geothermal
natural gas
9. What effect does the Earth's surface have on solar radiation?
Half of the solar radiation is absorbed and converted to infrared (heat).
Nearly all solar radiation is reflected back into space by the ground.
The ground absorbs half the solar radiation and stores it as infrared radiation for centuries.
10. Which greenhouse gas has the greatest effect on climate?
nitrous oxide
hydrofluorocarbons
water vapor
carbon dioxide
Answer:
6) Solar power
7)sugarcorn
8) geothermal
9)C
10) CARBON DIOXIDE
Which of the following lists the two particles found together inside the nucleus of an atom?Photons and ionsNeutrons and electronsProtons and neutronsElectrons and protons
Answer:
protons and neutrons.
Explanation:
What is a couplet in the taxonomic key?
Answer:
A couplet is a pair of sentences in a taxonomic key that are mutually exclusive and contrasting to each other. Couplet is a method belonging to dichotomous keys with two parallel statements that present the user with two choices for a specific characteristic trait or a qualitative or quantitative feature.
Explanation:
Answer:
A couplet in the taxonomic key is dichotomous.
the first living organism on earth was probably a(n) ___ because the fossil remnants indicate a single-celled prokaryote.
Which of the following statements is a principle of the cell theory that supports the idea that new cell will replace damaged cells in a scraped knee
The result of photosynthesis as glucose and oxygen
A oxygen
B products
C gas exchange
D chlorophyll
Answer:
A
Explanation:
Organ systems in the human body perform vital functions. Which organ system directs all the other organ systems and is the control center of the human body?
a. nervous system
b. RespiratorySystem
c. Circulatory System
d. Reproductive System
The Devils Hole pupfish is one of the world's rarest fishes, spending most of its life in the top few meters of very warm waters of a cavern located in the middle of the Mojave Desert. Devils Hole,
a geologic pool, is the only naturally occurring habitat for the endangered Devils Hole pupfish. This fish's habitat is one of the smallest natural ranges known for any vertebrate. Devils Hole is an
extreme environment, with water temperatures and dissolved oxygen concentrations near the lethal limits for most fish species.
Which of the following statements best explains why the Devils Hole pupfish are able to live in this environment?
Answer:
Thermal invasive
Explanation:
Devils Hole pupfish can live in this environment because they have adapted genes, which offer resistance to their bodies to the harsh environment where they live.
We can come to this answer because:
A living being can only live in an inhospitable environment if its organism allows for an adaptation.In this case, we can say that Devils Hole pupfish had a population with different genetic compositions, where some had genes adapted to this environment and others did not have these genes.Devils Hole pupfish that didn't have the adapted genes didn't resist the environment and died.The Devils Hole pupfish that possessed the genes survived and passed those genes on to their descendants.In this case, Devils Hole pupfish that received the genes adapted to the environment developed resistance that allows them to live amidst extreme resources.
More information:
https://brainly.com/question/18972693?referrer=searchResults
answered
Whats TWO Answer Giving Brainliest To first Correct AnSwEr:D......... please help :C
Answer:
c
Explanation:
Winter crops grow well in western part of nepal
The westerlies wind from Mediterranean sea cause the more rainfall in winter in western part so winter crpos grow well in western part of nepal.
Hope this helps you.Plz mark me as brainliest if this helps you.
How does genetic variation help a species survive through an environmental change
Answer:
Look at explanation
Explanation:
Genetic variation helps a species survive through environmental changes because some individuals can adapt to a changing environment. Genetic variation allows more variations within phenotypes.
Need help with question 23.
Which is an appropriate conclusion for the data shown?
The decrease in carbon dioxide (CO2) for the leaf was less than the decrease for the stem.
- More oxygen was produced in the stem than in the leaf.
-There was no photosynthesis taking place in the roots.
- The stem was performing photosynthesis at a faster rate than the leaf.
Answer: I think Its the stem was performing photosynthesis at a faster rate than the leaf. But I'm not 100% sure, but I think its that one. I hope this helped!
please help me only if you really know i will mark brainly
Answer:
A. Lactic acid.
Explanation:
HELPP PLEASE THIS IS VERY IMPORTANTT: Scientists on a space shuttle mission studying plant growth would probably see that the plants on the space shuttle do not grow in the same direction and pattern as those on Earth. Scientists working in space would MOST LIKELY be studying the effects of which of the following stimuli on plant growth?
A) gravity
B) oxygen
C) radiation
D) temperature
CAN SOMEBODY PLSSSS STILL ANWSER I NEED THIS ASAP BIOLOGY HELP!!!!!!!!!!!!!! BRAILIESTT
Question 32:lipids
Question 33:Chemical bonds
Plant c
question 35: Type A or Type B
Which statement best explains the importance of enzymes lowering the activation energy necessary for reactions to take place?
a Reactions that require less energy to begin are able to occur more quickly.
b Reactions produce heat, causing the chemical bonds to become strong.
c Reactions are able to proceed slowly to maintain the metabolism of the cells.
d Reactions requiring less energy are able to produce less product.
Answer:
A
Explanation:
because a enzyme simply speeds up a reaction and only does that by pressure and stress not by doing chemical changes
The statement which best explains the importance of enzymes lowering the activation energy necessary for chemical reactions to take place is: A. Reactions that require less energy to begin are able to occur more quickly.
A chemical reaction can be defined as a chemical process which mainly involves the continuous transformation or rearrangement of the ionic, atomic or molecular structure of a chemical element through a break down and formation of chemical bonds, in order to produce a new chemical compound.
As a general rule, the activation energy of a chemical reaction must first of all be reached by its combining chemical elements (reactants) before it can start or begin.
An enzyme can be defined as a biological catalyst that is used to speed up (increase) or catalyze (accelerate) the rate of a chemical reaction, by lowering (decreasing) the activation energy of its constituent chemical elements (reactants).
Hence, a chemical reaction that only require less energy to begin (start) are able to occur more quickly before those that require high energy.
In conclusion, the activation energy of a chemical reaction should be lowered in order for it to occur or take place fast (quickly) enough over a short period of time.
Read more: https://brainly.com/question/24212500
4. Classity as man-made or natural extinction: Habitat Destruction, removal of natural habitats.
Both
Neither
Man-made
Natural extinction
In the diagram below, C is the midpoint of AB. If AC is 8 centimeters, what is the length of CB?
A. 8 cm
B. 6 cm
C. 16 cm
D. 4 cm
Answer: 8cm
Explanation:
Since C is the midpoint of AB, it means that AC and CB are equal in length. So, if AC is 8 centimeters, then CB is also 8 centimeters.
What is a midpoint ?In geometry, a midpoint is the point that divides a line segment into two equal parts. In this diagram, C is the midpoint of the line segment AB, which means that the line segment AC is equal in length to the line segment CB.
We are given that AC is 8 centimeters in length. Since CB is also equal in length to AC, we can conclude that CB is also 8 centimeters in length. Therefore, the correct answer is A: 8 cm.
To summarize, when a line segment is divided into two equal parts at the midpoint, the two resulting line segments are also equal in length.
In this problem, we use this fact to determine that CB is also 8 cm in length since it is the other half of the line segment that is 8 cm long.
Learn more about geometry midpoint at:
https://brainly.com/question/29769002
#SPJ7
What is a mixture in which all the components are evenly spread out?
Answer:
A mixture is made when two or more substances are combined, but they are not combined chemically. There are two main categories of mixtures: homogeneous mixtures and heterogeneous mixtures. In a homogenous mixture all the substances are evenly distributed throughout the mixture (salt water, air, blood).
Answer:
homogenous mixture
Explanation:
A mixture is made when two or more substances are combined, but they are not combined chemically. There are two main categories of mixtures: homogeneous mixtures and heterogeneous mixtures. In a homogenous mixture all the substances are evenly distributed throughout the mixture (salt water, air, blood).
