Prokaryotic cells are surrounded by a cell membrane.
True
False
Answer:
True
Explanation:
They are surrounded by a plasma membrane.
How are seeds produced?
Answer:
When the ovum is fertilized by pollen tube core, it starts a process of differentiation which leads to the seed generation. In angiosperms, the fruit formation occurs from the ovary of flowers, simultaneously and in a similar way to the formation of seeds.
Explanation:
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Which organisms use photosynthesis to make their own food
Why is environmental science important environmental science addresses (1)____ strategies so we utilize our natural resources efficiently. It also provides us with knowledge on how to lead an (2)_____ lifestyle
1. Recycling, business, social
2.luxurious, healthy, eco-friendly
Environmental science deals with biology along with geography and the environment. It addresses a recycling strategy and aids in leading an eco-friendly lifestyle.
What is a recycling strategy?A recycling strategy is a technique that includes the waste material into reusable material so that the pollution is reduced and the product is used efficiently.
The sciences aid in leading an eco-friendly life as they reduce the negative impact on the environment and make the world a better place.
Therefore, recycling and eco-friendly are the correct blanks.
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Which of the following are part of what makes up a seed? (Choose all that apply)
endosperm
seed coat
pollen tube
embryo
Answer:
embryo, seed coat, endosperm
Answer:
endosperm
seed coat
embryo
Explanation:
correct
A researcher places part of a plant cell in a beaker of water. She observes that the plant leaves release bubbles of gas when she shines a light on the beaker. The leaves do not release gas when the beaker is placed in the dark. Based on her observations, which of the following is the most logical inference?
Answer:
Explanation:
a
A researcher places part of a plant cell in a beaker of water. She observes that the plant leaves release bubbles of gas when she shines a light on the beaker, and this is due to the plants going through photosynthesis, which is in Option B.
What is the product and the bubble formation in photosynthesis?The bubbles that are seen in water when plants are kept in light are actually oxygen bubbles. During photosynthesis, plants use sunlight, carbon dioxide, and water to produce glucose (sugar) and oxygen. The oxygen produced during photosynthesis is released into the surrounding environment as a waste product. When plants are submerged in water, this oxygen can accumulate and form bubbles. This process is called bubbling. The bubbles that are seen in the water are an indication that the plant is actively photosynthesizing and producing oxygen.
Hence, she observes that the plant leaves release bubbles of gas when she shines a light on the beaker, and this is due to the plants going through photosynthesis, which is in Option B.
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modeling DNA Mutations Table
base sequence of mutated strand
Answer: Only a single codon in the gene sequence is changed in base substitution mutation. Although a base substitution alters only a single codon in a gene, it can still have a significant impact on protein production.
Explanation:
Which of the following statements best describes the role of adenylyl cyclase in
the epinephrine signaling pathway?
A.It converts a polymer to its monomer subunits.
B.It moves substances across the plasma membrane.
ect!
C.It accelerates the production of a second messenger.
D.It transfers phosphate groups from to protein substrates.
Answer:
C.It accelerates the production of a second messenger.
Explanation:
Adenylyl cyclase is an enzyme that catalyzes the conversion of adenosine triphosphate (ATP) to cyclic adenosine monophosphate (cAMP), a second messenger that activates the protein kinase A (PK-A) protein by dissociation of its regulatory subunit from the catalytic subunit. The first step of the epinephrine signaling pathway consists of the hormone binding to the epinephrine receptor localized on the cell surface. This binding activates a G protein inside the cell, which in turn activates the adenylyl cyclase enzyme. Subsequently, adenylyl cyclase converts ATP molecules into cAMP molecules. Since cAMP transports the message of the epinephrine hormone within the cell this molecule (cAMP) is considered to be a second messenger. Finally, cAMP activates the PK-A enzyme which phosphorylates different proteins and thus triggers different biological processes.
When would the carrying capacity of an area be most likely to change?
when resources remain the same
after a fire or flood
if emigration takes place
for all species at the same time
Answer:
Required Answer:-An increase in population, resources, natural disasters, and catastrophic events. Weather, natural disaster, human activity. As a population reaches its carrying capacity, resources become more scarce.
help please its timed
Answer:
1st pic- transcription
2nd pic -3
3rd pic- 2
4th pic -1
Explanation:
SUPER EASY BRAINLYIEST Buffer systems in the body maintain proper pH balance in order for life processes to proceed. Proteins found in the blood plasma are often used as buffers.
What makes a protein able to function as a buffer?
A.The protein’s molecular shape must enable it to bind with other proteins in the plasma.
B.The protein must be capable of both accepting and releasing protons.
C.The protein must maintain its ability to release various amino acids, thus changing its molecular shape.
D.The protein must take on a conformation change according to the activity of the associated enzyme in regulating the blood’s pH.
what is the function of the Articular cartilage.
Answer:
Articular cartilage is a thin layer of specialized connective tissue with unique viscoelastic properties. Its principal function is to provide a smooth, lubricated surface for low friction articulation and to facilitate the transmission of loads to the underlying subchondral bone.
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On a pH scale water is located at 7, hydrochloric acid (HCl) is located below 7 and sodium hydroxide (NaOH) is located above 7.
Group of answer choices
True
False
Why do certain volcanoes develop in the middle of tectonic plates
Answer:
Explanation:
because matter from both plates form the volcano....the magma is formed from the core.
CAN SOMEONE PLEASEEE HELP ME WITH THIS SCIENCE QUESTION THANK YOU !!
Answer:
The answer is D.
Explanation:
Farmers have to continuously use the pesticides once used the first time because they have become an indispensable part of an agricultural cycle.
#teamtrees #WAP (Water And Plant)
Which of these is NOT part of the digestive system?
pancreas medulla
teeth
small intestine
Explain what is meant by cotransport
Explanation:
Cotransporters are a subcategory of membrane transport proteins that couple the favorable movement of one molecule with its concentration gradient and unfavorable movement of another molecule against its concentration gradient
A researcher is investigating the of effects a chemical that makes thylakoid membranes permeable to hydrogen ions (H+). Which of the following is most likely direct effectof adding the chemical to plant cells?
Answer:
B. The chloroplasts will generate less ATP
Explanation:
Photosynthesis, occurs in the chloroplasts of plants. Solar energy is converted into chemical energy in the form of stable carbohydrates.
6 CO2 + 6 H2O + light → C6H12O6 + 6 O2
Carbon Dioxide + Water + Light Glucose + Oxygen
Chloroplasts, are small membrane-bound organelles of multi-folded membranes containing pigments, enzymes, and other molecules that facilitate the process. The thylakoid contains multiple folded membranes called granum stacked together. They contain light-absorbing pigments like chlorophyll.
Here, absorbed light is used in photolysis, to split water produce H+, O2 and high-energy electrons for the high-energy producing electron transport chain.
Protons are pumped into the stroma within granum, producing ATP. ∴ Without ATPase, less ATP is produced.
Chloroplasts are the membrane-bound organelles, which carry out the process of photosynthesis. The correct answer is:
Option B. The chloroplasts will generate less ATP.
Photosynthesis is the process of preparing the food in presence of sunlight. It occurs in the plant. The chloroplasts are the membrane-bound organelles, which consists of pigments, enzymes, and other molecules. The thylakoid membrane consist of stacked membranes, known as grana. The light-absorbing pigment, chlorophyll is found in grana.
The following points can be used to explain photosynthesis:
The absorbed light initiates photolysis, which is the breakdown of water molecule into hydrogen and oxygen. During photolysis, high-energy electrons are also released. These electrons are utilised in the electron transport chain to provide energy.Therefore, the permeability of the protons into the granum will yield ATP. The less ATP will be produced without ATPase.
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Jorge hits a drum as hard as he can, and it makes a loud sound. Then he hits the same drum with less strength, and it makes a quieter sound. Which statement best explains why hitting the drum at different strengths produces sounds at different volumes? A. The vibrations are the same at each strength. B. The vibrations are different at each strength. C. The pitch is the same at each strength. D. The pitch is different at each strengh
D is the answer
^_^
^ Above is the right answer
Benefits of building dams include
А.Provides year-round water supply for irrigation and use in cities
B.Can produce electricity
С.Can control flooding downstream
D.All the choices are benefits
Answer:
D. All the choices are benefits
Explanation:
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Answer:
F2
Explanation:
Answer:
F3
Explanation:
What is the representative organism of annelids?
Answer:
The annelids (Annelids, from Latin anellus, "little ring"), also known as the ringed worms or segmented worms, are a large phylum, with over 22,000 extant species including ragworms, earthworms, and leeches.
Explanation:
Rank: Phylum
Organism classification: Leech
Displayed higher classification: Animal
Answer:
The annelids (Annelids, from Latin anellus, "little ring"), also known as the ringed worms or segmented worms, are a large phylum, with over 22,000 extant species including ragworms, earthworms, and leeches.
Explanation:
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The different types of electromagnetic radiation are usually organized on the electromagnetic spectrum from radio waves to gamma waves. Why are they arranged in this order? A. They are arranged in order of decreasing energy, B. They are arranged in order of decreasing frequency. C. They are arranged in order of how useful the light is. D. They are arranged in order of decreasing wavelength.
Answer: The electromagnetic spectrum is a continuum of all electromagnetic waves arranged according to frequency and wavelength. As shown in the image the order of increasing frequency is : Radio waves, Visible light, X-rays and Gamma rays.
Explanation:
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Muscles worksheet STEP 1: Fill in the blank with the name of the muscle.
1. flexion of the hip —————
2. extension of the thigh ——————
3. abduction of the thigh adduction of the thigh —————
4. extension of the arm —————
5. flexion of the arm —————
4. abduction of arm at shoulder ——————
5. rotation of the head ——————
6. flexion of abdomen —————-
7. lateral flexion of the abdomen ——————
8. lateral rotation of the abdomen
9. Elevation of the ribs
10. Elevation of the mandible
In which structure would you expect to find a chloroplast?
A. Blood cell from a dog
B. Cell from sunflower leaf
C. Human skin cell
D. Liver cell from a penguin
Answer:
b.cell from a sunflower leaf
The structure that can have chloroplast is the cell from sunflower leaf. The correct option is B.
What is chloroplast?Chloroplasts are chlorophyll-containing organelles found in plant cells; they are necessary for Earth life because photosynthesis occurs in chloroplasts.
Proplastids give rise to chloroplasts, as do chromoplasts, leucoplasts, as well as other plastids.
Chloroplasts are plant cell organelles that use photosynthetic energy to convert light energy into reasonably stable chemical energy.
They survive life on Earth by doing so. Chloroplasts also perform a variety of metabolic functions for plant cells, such as the generation of fatty acids and membrane lipids.
Chloroplasts are found in all green plants and algae. Chloroplasts can also be found in photosynthesis that don't appear green, such as giant kelp's brown blades or certain plants' red leaves.
Thus, the correct option is B.
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What part of the eye dilates and lets in the correct amount of light so
you can see properly
Answer:
The iris is the colored part of your eye. The iris controls the pupil to let the right amount of light into the eye. In bright light, the pupil narrows (constricts) to let in less light. In dim light, the pupil widens (dilates) to let in more light.
Explanation:
2. The experiment proceeded as normal, with the experimental group hearing about the
potential presence of a gun as the confederates left the study and the control group not
hearing about the gun. All participants returned on day two for the interview with the
police detective. After debriefing, none of the participants said they were aware that the
theft was staged. The researchers found that those in the experimental group did
incorporate the gun misinformation into their memories of the theft more than those in
the control condition. That is, the mean score that a gun was present was much higher for
the experimental group (M= 67%, SD = 12.4%) than the control group (M= 33%, SD =
11.16%).
a. Maturation
b. Regression to the mean
c. Selection
d. Mortality
e. Instrumentation
f. Testing
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Explanation:
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Explanation:
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If sunlight and a radio wave are both traveling through water, compare the speed of each wave. Explain how you know.
Answer:
Speed of both will be decreases when they travel through the medium of water.
Explanation:
Both sunlight and radio wave has the same speed in vacuum but both speed will be decreases when they travel through the medium of water because the consistency of water is more than air which make hard to travel for sunlight and radio wave. The speed of sunlight is slightly decreases but the radio wave can't go too far in the water and finally stops so we can say that sunlight can travel through water but radio wave none.
Indicate whether a solution will have more OH– or H+ if the pH value of the solution
is 10.
The solution with a pH value of 10 will have more OH- ions.
In chemistry, pH is described as a scale that is specifically utilized to specify the basicity or acidity of an aqueous solution. The pH of different solutions are described as follows:
Acidic solution: If a solution has pH<7, then the solution is acidic and tend to have more H+ ions than OH- ions Neutral solution: The solution is neutral when pH=7 and the concentration of H+ and OH- ions are the same Basic solution: If a solution has pH>7, then the solution is Basic and tend to have more OH- ions than H+ ionsThus, in this case, pH>7 and thus we can conclude that the solution will have more OH- ions than H+ ions.
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