Which statement describes thylakoids?
A Glucose is formed here.
B Water molecules are formed here.
C Only photosystem II functions here.
D Photosystems I and II function here.
Answers
Answer:
D. Photosystems I and II function here.
What are thylakoids?
A flattened sac or vesicle lined with a pigmented membrane that is the site of photosynthesis, in plants and algae occurring in interconnected stacks constituting a granum of chloroplast, and in other photosynthesizing organisms occurring either singly or as a part of the cell membrane or other structure.
The thylakoid system is a collection of membranous sacks called thylakoids. The chlorophyll is found in the thylakoids and is the sight for the process of light reactions of photosynthesis to happen. The thylakoids are arranged in stacks known as grana. Each granum contains around 10-20 thylakoids.
What is photosynthesis?The complex process by which carbon dioxide, water, and certain inorganic salts are converted into carbohydrates by green plants, algae, and certain bacteria, using energy from the sun and chlorophyll.
Photosynthesis l and ll are
1=light reactions/light dependent reactions. 2=the calvin cycle/light independent reactions.The Calvin Cycle is a biochemical pathway of photosynthesis in which carbon dioxide is converted into glucose using ATP and NADPH.
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Answer: the answer D. Photosystems I and II function here.
Explanation:
Related Questions
Interpret the following scenario to distinguish between recessive and dominant forms of inheritance. Two unaffected parents that are heterozygous for a genetic disease have a child with the genetic disease. This form of inheritance follows a _____ form of inheritance.
Answers
Interpret the following scenario to distinguish between recessive and dominant forms of inheritance. Two unaffected parents that are heterozygous for a genetic disease have a child with the genetic disease. This form of inheritance follows a recessive form of inheritance.
What is genetic disease?A person needs two recessive alleles to display a recessive trait, yet only one dominant allele can express a dominant trait. Dominant alleles serve as a cover for recessive alleles.When a gene is inherited from only one parent, and a normal gene is inherited from the other parent, the offspring will not have the condition. When a gene is inherited from either parent, the offspring will inherit that genetic condition or characteristic.Long DNA strands are arranged into genes on chromosomes that code for particular characteristics. These particular features can be passed down through the genes as well.When present, dominant behavior is always apparent. Only when dominant genes are absent does recessive gene expression occur.Learn more about inheritance here:
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Which process that causes changes in Earth's orbit was found to coincide with 100,000-year glacial cycles? Answer Options: A. Axial precession B. Precession of the ecliptic C. Apsidal precession D. Obliquity
Answers
Answer:
Apsidal precession
Explanation:
Apsidal precession is the process that causes changes in Earth's orbit and was found to coincide with 100,000-year glacial cycles. Thus, the correct option is C.
What is the Glacial cycle?The glacial cycle may be defined as a significant global climatic oscillation of the order with a specific rate that is developed by the ice age.
Apsidal precession is the precession of the line that links the apsides of an astronomical body. The regular cycle of apsidal precession takes about 100,000-year.
Therefore, the correct option for this question is C.
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which part of the cell membrane does not mix with water
Answers
Hope it helps
Answer:
FATTY ACIDS
Explanation:
Cellular respiration uses one molecule of glucose to produce.
Answers
Answer:
36 ATP
Explanation:
Botox specifically blocks what process at the neuromuscular junction?
Answers
Botox specifically blocks the release of acetylcholine at the neuromuscular junction.
Botulinum toxin, one of the most poisonous biological substances known, is a neurotoxin produced by the bacterium Clostridium botulinum. C. botulinum elaborates eight antigenically distinguishable exotoxins (A, B, C1, C2, D, E, F and G). All serotypes interfere with neural transmission by blocking the release of acetylcholine, the principal neurotransmitter at the neuromuscular junction, causing muscle paralysis. The weakness induced by injection with botulinum toxin A usually lasts about three months. Botulinum toxins now play a very significant role in the management of a wide variety of medical conditions, especially strabismus and focal dystonias, hemifacial spasm, and various spastic movement disorders, headaches, hypersalivation, hyperhidrosis, and some chronic conditions that respond only partially to medical treatment.
The list of possible new indications is rapidly expanding. The cosmetological applications include correction of lines, creases and wrinkling all over the face, chin, neck, and chest to dermatological applications such as hyperhidrosis. Injections with botulinum toxin are generally well tolerated and side effects are few. A precise knowledge and understanding of the functional anatomy of the mimetic muscles is absolutely necessary to correctly use botulinum toxins in clinical practice.
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What is true about prokaryotic cells?
Answers
Answer:
they have a nucleoid.
Explanation:
Unlike eukaryotes, they do not have a separated nucleus or organelles bound inside a membrane, so they have to keep their DNA and other genetic materials within a nucleoid.
Why is the digestive system important?
A
It carries blood through the body to bring oxygen, water and nutrients to cells.
B
It changes food into molecules that cells can use for energy, growth and healing.
C
It regulates the functions of all the other body systems.
D
It interprets information provided by the senses and sends messages throughout the body.
Answers
the answer would be b. you need food in order to do regular everyday things!
have a nice day <3
Cytokinesis describes the movement of a cell?
true
false
Answers
The part of a transfer rna molecule that binds to the codon is the:.
Answers
Answer:
The part of a transfer rna molecule that binds to the codon is the anticodon
Which of these is a layer inside Earth that provides energy that drives plate tectonics?
A. mantle
B. lithosphere
C. magnetosphere
D. continental crust
Answers
Cancer is a disease related to the cell life span and cell division. If cancer cells were added to the data table, predict what would be written under the columns headed “Life Span” and “Cell Division.” Explain the reasoning underlying your predictions.
Answers
Many people live much longer than 5 years after their cancer diagnosis. The term does not mean a person will only survive for 5 years.
For example, 90% of people with breast cancer will be alive 5 years after the diagnosis of cancer.
Cell Division:Cancer is unchecked cell growth. Mutations in genes can cause cancer by accelerating cell division rates or inhibiting normal controls on the system, such as cell cycle arrest or programmed cell death. As a mass of cancerous cells grows, it can develop into a tumor.
Cancer is a disease caused when cells divide uncontrollably and spread into surrounding tissues.
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Which component of physical fitness is skill related? A.Flexibility B.cardiorespiratory C.muscular strength D.agility
Answers
Answer:
D.agility
Explanation:
D.agility
Answer:
D Agility
Explanation:
physical fitness components related to skills, including: explosive power, speed, agility, coordination, speed, reaction and balance.
Why is the mammalian circulatory system described as a double circulation?
A Blood flows twice through the heart in one complete cardiac cycle
B Blood flows twice through the heart in one complete circuit of the body.
C Blood remains within arteries, capillaries and veins.
D Blood transports both oxygen and carbon dioxide
Answers
B Blood flows twice through the heart in one complete circuit of the body.
(Double = twice)
Hope this helps!
Answer:
B. Blood flows twice through the heart in one complete circuit of the body.
What is the mammalian circulatory system?The circulatory system of mammals, whose central organ is a four-chambered heart, is a perfectly organized system of blood vessels: arteries, veins and capillaries.
Double circulation is the a circulatory system in which blood flows through two separate circuits, as pulmonary and systemic.
What is the circulatory system?The system of organs and tissues, including the heart, blood, blood vessels, lymph, lymphatic vessels, and lymph glands, involved in circulating blood and lymph through the body. The circulatory system allows blood to circulate throughout the body and transport nutrients, oxygen, hormones, carbon dioxide and blood cells to every part of the body in order to nourish it and help the body fight diseases. it also helps stabilize the normal body temperature and pH, maintaining homeostasis.
Which of the following best describes the division of cytoplasm and the cell membrane?
a:Cytokinesis
b:Sister chromatid
c:Spindle fiber
d:Centromere
Answers
Answer:
A: Cytokinesis
Explanation:
the cytoplasmic division of a cell at the end of mitosis or meiosis, bringing about the separation into two daughter cells.
Greater activation of the ________ occurs when a person views pictures of people from his or her own race as opposed to pictures of people from other racial groups
a.corpus callosum
b.corpus callosum
c.temporal top cortex
d.fusiform face area
Answers
Greater activation of the Fusiform face area (FFA) occurs when a person views pictures of people from his or her own race as opposed to pictures of people from other racial groups.
The fusiform face area (FFA) is a region of the human brain, in the inferior temporal cortex, which is responsible for facial recognition. When you see faces, this part of the brain becomes active.
The FFA is also activated by facial features, particularly eyes, regardless of whether or not the face is familiar. Greater activation of the Fusiform face area (FFA) occurs when a person views pictures of people from his or her own race as opposed to pictures of people from other racial groups.
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what is the number one factor when descending to the bottom of the ocean floor ?
Answers
Question 4 of 10
If research is restricted, then the new discoveries made are limited. Which
action is most likely to increase the number of discoveries scientists can
make?
O A. Ignoring public opinion
O B. Increasing government funding of research
O C. Adding government regulations
O D. Eliminating private funding of research
Answers
What is cytoplasm? (simple definition)
Answers
Answer:
the material or protoplasm within a living cell, excluding the nucleus.
Explanation:
7.
Why is most bioluminescence blue in color?
Answers
Answer:
Bioluminescence is light produced by an organism using a chemical reaction. While usually blue in color, because this is the light that travels best through the water, bioluminescence can range from nearly violet to green yellow and very occasionally red.
Explanation: Might be wrong
Chimpanzees live in groups composed of:
Group of answer choices
one adult male plus one adult female and their young.
large communities of bonded males and females, plus young of all ages.
several adult females, one adult male, and any dependent young.
multiple other primate species.
one adult male, several females, and their young.
Answers
In groups, chimpanzees live, eat, hunt, and play. These clubs can expand to several dozen people but typically include 20 or 30 members. To alert one another to the availability of specific meals.
Are humans a species?The billions of individuals that currently inhabit the earth are all descendants of one species, Homo sapiens. Just like other animals, humans vary from one another in terms of anything from size and structure to light skin and eye color. But by a significant percentage, our commonalities outweigh our differences.
How many species were there among humans?300,000 years ago, nine different human species coexisted on Earth. There is now only one. The stocky hunters known as Neanderthals, or Homo neanderthalensis, were suited to the chilly steppes of Europe. While the more ape-like Homo erectus and Homo rhodesiensis thrived in Indonesia and central Africa, respectively, the related Denisovans dwelt in Asia.
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Cell theory is the current leading theory used to describe characteristics of living things. Which of the following is NOT part of the Cell Theory?
Answers
Answer:
it is accepted that cells contain DNA in chromosomes and RNA in the nucleus and cytoplasm, but only in the modern cell theory. the classical cell theory does not include this. but using either classical or modern theory, it is false that all cells have DNA surrounded by a nucleus.
Explanation:
I hope it helped
Answer:
The cell theory states that living things are composed of one or more cells, that the cell is basic unit of life, and that cells arise from existing cells. A component to the cell theory is that the cell is the basic unit of life.
Explanation:
Which of the following is a tissue in your body?
O Your kidneys.
O Your brain.
O Your bicep muscle.
O Your digestive system.
Answers
Answer:
A your kidneys
Explanation:
Pockets of the
Patagonian habitat would
collapse without green
backed firecrowns. No
other creature can
pollinate these plants.
What is the BEST definition of
*collapse" as it is used above?
Answers
The collaspse meaning is to break apart or be ruined.
In an ecosystem, there are various species that interact with each other and also with their surrounding so an ecosystem is an interaction between the biotic factors and abiotic factors and there are many species that are very specific for their survival for example there are species present in the Patagonian habitat where are species like pockets plants can get pollinated only by the green-backed fire crowns and these species are specific to these creatures because no other than backed fire crowns can pollinate the species and in this case if anyone of the species is finished or endangered the other species survival is also in danger and in this case if the species backed fire crowns are under threat and are completed the Patagonian habitat would also collapse or will break apart and be ruined or exhausted because there will be no reproduction and due to this no generations and loss of species and then loss of habitat and these type of species are called as keystone species as for the petagonian habitat these are the only species forming up thge ecosystem in that area and if tthese two species collapse then the entire ecosystem will cease to exist altogether .
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In what class of organic molecules would hemoglobin, insulin, albumin, and Maltase, all of which are composed of chains of amino acids, be placed into
Answers
Hemoglobin is an example of a globular protein. Learn how hemoglobin proteins in the blood transport oxygen from the lungs to tissues throughout the body. Each hemoglobin molecule is made up of four heme groups surrounding a globin group, forming a tetrahedral structure.
calculate entropy change of the surroundings δssurr in j / k while the lava was moving toward the ocean.
Answers
Without additional information, it is not possible to calculate the entropy change of the surroundings (δs_surr) for the described process. To calculate the entropy change of the surroundings, we need to know the temperature of the surroundings and the system, as well as the amount of heat transferred between them.
Additionally, the description of "the lava was moving toward the ocean" is not specific enough to determine the exact thermodynamic process that is occurring. Depending on the specific conditions of the process, the entropy change of the surroundings could be positive, negative, or zero.Therefore, without more information about the specific conditions and process involved, we cannot calculate the entropy change of the surroundings (δs_surr).
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Communities where malaria is still a problem face a difficult choice. What factors should they consider when deciding whether to use DDT or not? What would you suggest?
Answers
DDT, as suggested by environmental health experts, can be used but only when needed and with great caution. It should be used only when there is no other safe, affordable and effective alternative available.
What is DDT?
DDT, dichlorodiphenyltrichloroethane, is an insecticide often used in agriculture. It was developed as the very first modern synthetic insecticide.
Initially, it was used with great effect to battle malaria, typhus, and the other insect-borne human diseases.
In 1972, EPA issued an order for cancellation of DDT based on its adverse effects on the environment, such as those to wildlife, as well as the potential human health risks it posed.
So, therefore, DDT, as suggested by environmental health experts, can be used, but only when needed and with great caution. It should be used only when there is no other safe, affordable and effective alternative available.
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Generalizations, explanations of natural phenomena, and additional hypotheses most often come about as a result of
A.
designing elaborate scientific investigations.
B.
the interpretation of experimental data.
C.
reading science fiction novels.
D.
consulting with nonscientific professionals.
Answers
Answer:
Perhaps it's A and B (viewpoint)
Asthma narrows airways to the lungs and in the lungs by contraction of muscles around the air passages, swelling of the airway lining, and build-up of excessive mucus. Because of this, asthma makes both the ___________ and ______________ systems work harder to deliver oxygen to the cells throughout the body. A) respiratory; nervous B) respiratory; muscular C) respiratory; digestive D) respiratory; circulatory
Answers
Help please this is my last question it’s question 4
Answers
Help please this is my last question it’s question 4
Answer:
C. Allele
which task in the kitchen is a example of physical change ?
frying a egg
baking a cake
melting butter
toasting bread
Answers
A task in the kitchen that represents an example of physical change is the melting of butter. Thus, the correct option for this question is C.
What is Physical change?Physical change may be defined as a type of change that does not alter the chemical properties of the matter or any compound. In these types of changes, the chemical composition of the matter remains the same.
Physical changes are generally utilized in order to discrete mixtures into their component compounds. Apart from this, it has no influential activity that separates compounds into chemical elements or simpler compounds.
Frying an egg, baking a cake, and toasting bread are examples of cooking food that significantly involves exemplification of chemical change.
Therefore, melting butter is a task in the kitchen that represents an example of physical change. Thus, the correct option for this question is C.
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