What is a photosystem?
a structure which contains stroma
b structure where the dark reaction occurs
c structure through which H+ flows to form ATP
d cluster of the light-absorbing molecules called pigment
Thanks!
What is the relationship between changing co2 concentration and temperature?
Answer:
When the carbon dioxide concentration goes up, temperature goes up. When the carbon dioxide concentration goes down, temperature goes down
Explanation:
part of earth that contains all ecosystems
Answer:
biosphere
Explanation:
biosphere
The biosphere is made up of the parts of Earth where life exists—all ecosystems.
I think the answer is the Biosphere
Which of the following is a cell that has NO specific function?
• Stem cell
•Specialized cell
•Prokaryotic Cell
•Eukaryotic Cell
Answer:
stem cell
Explanation:
it has no specific function because can rise into any typical cell function
what is the result of water flowing down gently sloping land?
High energy or low energy
Answer:
i belive its low energy
Explanation: If the water is sloping the land gently its not using much energy.
what is a tool that shows phenotypes of genetically related family members
Answer: A Tool that Shows Phenotypes of Genetically Related family Members, Are A pedigree.
Explanation:
On the Galápagos Islands, Darwin observed tortoises with domed and saddle-shaped shells. How did Darwin’s observations of these tortoises help him form the theory of evolution by natural selection?
Explain how form and function are related in human cells. Include examples.
Compare and contrast epithelial and muscle tissues.
PLEASE HELP ME!
Answer:
The cell structure is formed according to their function.
Explanation:
Form and function are related to each other in human cells because the cells structure is formed according to its function. epithelial tissue are the group of cells that act as coverings of the body and controlling the movement of materials across their surface whereas muscle tissues are group of cells that are responsible for the movement of the body. Both tissues has different structure which allows it to perform different function.
5. Which is an example of an epidemic?
a. Dengue fever in a small African town
b. Swine flu cases reported in multiple countries
c. Smallpox outbreak on several continents
D. Worldwide deaths from tuberculosis
Answer:
A: Dengue fever in a small African town
Explanation:
The seed capsules of the Himalayan balsam plant explode when touched and can eject seeds as far as 16 feet from the parent plant. Is this a structural adaptation, behavioral adaptation, or both?
Answer:
behavioral adaptation
Explanation:
A structural adaptation is defined as the adaptation in which physical features of organisms or plants while behavioral adaptation is defined as the activities an organism or plant do to survive.
The Himalayan balsam plant is an example of behavioral adaptation because it disperse its seeds when it ripe and touched by someone, for its survival it shows it dispersal behavior and spread seeds as far as 16 feet from the parent plant. In the fear of someone can harm by touching it, the survival instinct of balsam plant shows behavioral adaptation.
Hence, the correct answer is " behavioral adaptation".
How is active transport different from simple diffusion and facilitated diffusion?
Answer:
Active transport is when substances move against the concentration gradient and go from low to high. Diffusion is when substances move with the concentration gradient and go from high to low.
Explanation:
Which type of bacteria is used to make cheese, sauerkraut and
fruit juices?
Answer:
the type of bacterias to make cheese is lactobacillus, lactococcus, and streptococcus.
What is Lucy? This is for Science they said it’s a gorilla I think I just need confirmation.
Explain how a chemical reaction occurs using the following terms
Reactant
Product
Activation energy
Bond
Endothermic
Exothermic
Rate
A chemical reaction is a process where two or more reactants are converted to one or more products at a given rate, which requires a minimum amount of energy.
A reactant is a starting substance in a chemical reaction, whereas products are formed at the end of the reaction.The rate of reaction is the velocity of the chemical reaction.Activation energy refers to the minimum amount of energy required to activate reactants and thus start a chemical reaction. The chemical reactions store/release energy by destroying/building chemical bonds between atoms/molecules.Exothermic reactions release energy when the bonds are formed; whereas endothermic reactions consume energy.In conclusion, a chemical reaction is a process where two or more reactants are converted to one or more products at a given rate, which requires energy. These reactions can be exothermic processes or endothermic processes.
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You find a rock sample with radioactive atoms present. 25% of the original radioactive atoms were present, how many half lives have passed
Answer:
Im literally taking a test that my teacher made and i have no idea what the answer is
Explanation:
where are peripheral proteins located
Answer:
Explanation:
Peripheral membrane proteins are found on the outside and inside surfaces of membranes, attached either to integral proteins or to phospholipids. Unlike integral membrane proteins, peripheral membrane proteins do not stick into the hydrophobic core of the membrane, and they tend to be more loosely attached.
could someone please help me with this. :’)
Answer:
cool paper
Explanation:
Chipmunks use cheek pouches to carry food and store for the winter. Is this a structural adaptation, behavioral adaptation, or both?
Answer:
structural adaption
please help meeee !
Answer: B - Thicker layer of blubber
Explanation: Seals are well adapted to cold polar environments with thick blubber layers that act both as a food reserve and insulation. Most seals also have a layer of fur, giving additional insulation on land.
Hope this helps :)
Which of the following would NOT be a density-dependent limiting factor?
Disease
Food
Water
Extreme weather
Answer:
factors. Some—such as competition, predation, parasitism, and disease—depend on population density. Others—including natural disasters and unusual weather—do not depend on population density.
Explanation:
.
Which of the following illustrations is an example of thigmotropism?
Image A
Image B
Image C
39 points
Answer:
C.
Explanation:
HELP ASAP!!!!
The image shows a facility that generates electricity.
miner
Which kind of energy does this facility harness?

Answer:
A) Gravitational potential energy of water
A female heterozygous for dark hair and freckles married a male also heterozygous for dark hair and freckles. What is the possibility of having offspring with no freckles and light hair?
•8/16
•3/16
•9/16
•1/16
Answer: I would say 3/16 but then again im not too sure you may want to wait until a second answer arrives :D
A class is debating the advantages and disadvantages of different types of reproduction. One student argues that organisms that reproduce asexually, like bacteria, have no advantage over organisms that reproduce sexually.
Which of the following choices below represents an argument for the advantages of asexual reproduction?
A. Organisms that reproduce asexually are likely to find a mate at a faster rate than sexually reproducing organisms, which allows them to reproduce faster.
B. Organisms that reproduce asexually are more diverse and are more likely to pass on key genes for survival to future generations, which aids in maintaining beneficial genes for survival in the gene pool
C. Organisms that reproduce asexually gain variation through processes like crossing over, which allows survival in instances of ecological change
D. Organisms that reproduce asexually create a large amount of offspring in a short period of time in order to maintain their population
Answer:
D
Explanation:
Ya que en todas las definiciones anteriores el contenido que poseen no son acordes a la reproducción asexual , en otras palabras no tiene sentido alguno
1) If the amount of algae in the ocean decreases by 50%, the population of its consumers, goby fish, will
A decrease to its carrying capacity.
B go extinct.
C increase by 50%.
D increase to its carrying capacity.
Answer: decrease to it’s carrying capacity
What are spring tides called (high tides or low tides)
Answer:
Spring tides have higher high tides and lower low tides
so spring tides or low and high just more extreme in either direction
BRAINLIEST PLEASE HELP ASAP NOW IMEDIATLY!!!!!!! ITS DUR RIGHT NOW!!!
How do minerals impact our daily lives? How are minerals used? Give three examples.
Answer:
Iron, manganese, selenium, and calcium all provide day-to-day nutrients that body needs in order to function. Foods that are full of micronutrients can help strengthen cells, fight against harmful viruses, and boost the immune system.
rate of reproduction to sexual reproduction in plants
Answer: Asexual reproduction
For example, sexual reproduction allows for variation, but gestation usually takes a long time and it requires heavy parental input. Asexual reproduction occurs quickly, but because all of the offspring have the same genetic information, individuals are more susceptible to disease.
Explanation:
Two plants were being tested for growth. Both were given water and proper soil, etc. However, one was placed in the closet, and one was placed in the window sill. Why did the one in the closet die? Question 4 options: It was not around other plants. It was not around people enough. It did not receive sunlight. It did not have chloroplasts.
Answer:
It did not receive sunlight
Explanation:
For photosynthesis to occur, there is a chemical equation it follows
carbon dioxide + water + sunlight -> (yields) glucose + oxygen
This equation requires the sun to create glucose. The sun provides the energy for the plant to feed itself and grow.
Answer:
c
Explanation:
I took the test
Fungi differ from plants in that they do not reproduce by seeds and lack ...
A) chitin
B) hyphae
C) cell walls
D) chlorophyll
Answer:
C) Cell walls
Explanation:
fungi differ from plants