Answer:
B - Prokaryotes are the most important photosynthesizers.
Explanation:
There are some phototrophic prokaryotic organisms such as cyanobacteria and photosynthetic bacteria that carry out photosynthesis through chlorophyll-like pigments (bacteriochlorophylls) that enable them to absorb light and by using water as an electron donor in a similar way to plants. These organisms contain specialized plasma membranes which contain these photosynthetic pigments. Nonetheless, it is important to highlight that algae are the most important photosynthetic organisms in aquatic environments, while plants are the most important photosynthesizers in terrestrial environments.
The lac operon is regulated by both the availability of lactose and glucose. How does E. coli regulate transcription of the lac operon?
Answer:
E. coli regulate transcription of the lac Operon through the production of a small molecule called cyclic AMP (cAMP).
Explanation:
The lac operon is regulated by both the availability of lactose and glucose. E. coli regulate transcription of the lac Operon through the production of a small molecule called cyclic AMP (cAMP).
This cAMP acts a signaling agent which is made by E. coli anytime glucose levels are low In the cells which helps regulate the transcription process as glucose is needed for it .
11. An example of an atom that has no charge is one that has
A. 3 protons, 2 electrons, and 1 neutron.
B. 1 proton, 2 electrons, and 3 neutrons.
C. 2 protons, 2 electrons, and 1 neutron.
D. 3 protons, 1 electron, and 3 neutrons.
Answer:
C. 2 protons, 2 electrons, and 1 neutron.
Explanation:
Which of the following adaptations is characteristic of plants in the taiga biome?
A) low growing
B) perennial
C) waxy needles
D) survive on limited nutrients
Which of the following is NOT another name for sustainable agriculture?
O Conventional farming
O Industrial farming
O Traditional agriculture
O Modern agriculture
Answer
The answer is Industrial farming.
Explanation:
Industrial farming is the only one that harms our earth in the process.
What is the best way to record observations related to growth over time?
Which of the following is not part of cell theory?
A: Cells are the basic unit of life in all organisms
B: All living things come from one or more cells
C: All cells must be able to make their own food
D: All cells come from existing cells
Answer:
c) All cells must be able to make their own food
Explanation:
this is not there
Identify the inputs and outputs of the muscular
system
(part 2)PLEASE HELP! IN A HURRY! WILL GIVE BRAINLIEST!
Answer:
i say 'a' lower cased
Explanation:
brainlest?
One reason male peacocks spread their tail feathers is to
attract a mate. How does choosing a male with a bright,
full tail increase a peahen's chance of producing healthy
peachicks?
Answer:
the appearance of the peacock shows he is healthy, and if the peahen mates with him, it is likely that their offspring will also be born healthy. you would want to reproduce with the fittest individuals of your species and guarantee your species will continue to thrive.
Explanation:
Darius created what economy for the use of coins for goods ?
A. Trade
B. Barter
C.Capitalist
D. Money
Answer:
The correct answer is - A. Trade
Explanation:
Darius the emperor of the Persian empire was the first Persian emperor to use a coin system for goods, services, and even for tax which makes his economy large and developed his empire, and created a new capaital. Darius used a gold minted coin system for trade for the goods and services and salaries to the army which made his empire popular and a large economy. His economy was a trade economy as coins were used for the different type of goods, foods and services.
The main function of the circulatory system is to
O transport gases into and out of the body.
O transport nutrients, gases, and wastes.
O diffuse gases from the blood to lungs.
O filter water and wastes.
Answer:
Transport nutrients gas and waste. im pretty sure hope its right !
A spring toy is moving down steps, What happens to the energy of the toy?
A. The toy gains energy as it moves.
B. The toy loses energy to the steps.
C.The amount and type of energy of the toy stays the same.
D. The amount of energy the toy has stays the same, but it changes form.
Answer:
Option (d) is correct.
Explanation:
When a spring toy is at the maximum point, it have maximum potential energy because it is given by :
PE = mgh where h is height and g is acceleration due to gravity
When it moves down steps, its potential energy decreases and kinetic energy increases and it is given by :
KE=1/2 mv^2 where v is velocity of the object
It means when it is moves down step, the potential energy gets converted to kinetic energy. So, the amount of energy the toy has stays the same, but it changes form. Hence, the correct option is (d).
in the mitosis of onion root experiment, why does the onion root have to be crushed into smaller pieces
A molecule _____..........
Examine a two-gene cross in which a mutation in HERC2 is epistatic to the OCA2 gene. In a cross between a blue-eyed OOhh woman and a blue-eyed ooHH man, what eye color will the progeny have?
a. 9 brown eyes: 7 blue eyes
b. 3 brown eyes: 1 blue eyes
c. All blue eyes
d. All brown eyes
In recessive epistasis, the epistatic gene -HERC2- in h0m0zyg0us recessive state inhibits the expression of the hypostatic gene -OCA2-. In the example, the F1 is heter0zyg0us for both genes. Option D. All brown eyes.
Epistasis
When talking about epistasis, we are referring to an interruption.
These are interactions between genes located in different loci in the same chromosome.
An epistatic gene can alter, influence, or suppress the expression of a hypostatic gene.
When the epistatic gene is recessive, the interaction is known as recessive epistasis.
Available data:Two genesHERC2 gene is epistatic to the OCA2 geneCross: blue-eyed OOhh woman and a blue-eyed ooHH manWe will assume that
H allele expresses colorh allele inhibits colorO allele expresses browno allele expresses blue.Genotypes Phenotypes
HHOO, HhOO, HHOo, HhOo Brown eyes
HHoo, Hhoo Blue eyes
hhOO, hhOo, hhoo Blue eyes
Individuals that are h0m0zyg0us recessive for HERC2 have blue eyes regardless of the genotype of the OCA2 gene.
This is, the genotype hh inhibits the expression of OO, Oo and oo.
Cross:
Parentals) OOhh x ooHH
Gametes) Oh, Oh, Oh, Oh
oH, oH, oH, oH
Punnett square) Oh Oh Oh Oh
oH OoHh OoHh OoHh OoHh
oH OoHh OoHh OoHh OoHh
oH OoHh OoHh OoHh OoHh
oH OoHh OoHh OoHh OoHh
F1) 100% of the progeny will be heter0zyg0us for both genes, expressing brown eye color.
Among the progeny, neither of the genes is in h0m0zyg0us recessive estate, meaning that the expression of brown eyes is possible.
The eye color among the progeny is expected to be 100% brown eyes. Option D.
You can learn more about epistasis at
https://brainly.com/question/1185116
https://brainly.com/question/26211354
Please help I’ll mark brainliest
Answer:
mark me brainliest
Explanation:
Why do Primary succession happen
Answer:
Explanation: Primary succession occurs when new land is formed or bare rock is exposed, providing a habitat that can be colonized for the first time. For example, primary succession may take place following the eruption of volcanoes, such as those on the Big Island of Hawaii. As lava flows into the ocean, new rock is formed.
A cell with mitochondria defect will have issues with Select one : a. ATP synthesis O bacid generation . O c. fermentation. O d. glucose generation .
Answer:
ATP synthesis
Explanation:
The mitochondria is responsible for making ATP so if a cell had a defective mitochondria it would have difficulty creating ATP or "ATP synthesis"
What experiment conducted by andre jagendorf with isolated thylakoid membranes proved that possibles solutions?A. Blue and red light, but not green, caused photosynthetic production of oxygenB. The ATP synthase complex functioned as a molecular rotary engineC. Molecular oxygen (O2) is derived from water, not CO2D. ATP and NADPH are the direct products of the light reactions, not sugar.E. ATP synthesis could be energized by a proton gradient.
Answer:
The correct answer is option E, that is, synthesis of ATP could be mediated by a proton gradient.
Explanation:
Andre Jagendorf inserted chloroplasts for many hours within a buffer of pH 4 and then instantaneously mixed that with the buffer of pH 8. He came to known that in the stroma, a change in pH was witnessed, that is, it moved to 8 while in the thylakoid space there was no change, that is, the pH remained at 4. He then isolated the thylakoid and put it in the dark, he noticed that it produced ATP. This proves the hypothesis of Peter Mitchell that the production of ATP is mediated by proton-motive force.
How does the declining biodiversity affect us?
Answer:
Declining biodiversity can affect us because it can have changes in ecosystem services affect livelihoods, income, local migration and, on occasion, may even cause or exacerbate political conflict.
Explanation:
Hope it helps mark me brainlist plzzzzzzz
3. Which of these two longitudinal waves in the Figure below has
greater amplitude?
Answer:
the second one because the first one has very little amplitude compared to the second one.
Answer:
Wave b
Explanation:
How do you think earthworms help the process of composting
Answer: Worm composting is using worms to recycle food scraps and other organic material into a valuable soil amendment called vermicompost.
Explanation: Worms eat food scraps, which become compost as they pass through the worm's body
question : what’s the order?
Answer: i believe its like this:
The top one is Sugars (C6H12O6)
light energy+CO2-> H2O+O2
which part of photosynthesis produces sugars
Which constellation is connected with lines in the picture?
Answer:
big dipper
Explanation:
i took the test on k12
Heat energy is necessary for evaporation to occur. Energy is used to break the bonds that hold water molecules together, which is
why water easily evaporates at the boiling point. In fact, the process of evaporation removes heat from the environment. Which of
these every day examples illustrates how evaporation removes heat from the environment?
A)
sweating cools you
B)
fog forming over a lake in the early morning
C)
water that drips off the outside of your glass of water
D)
your glasses fogging up when you come inside to a warm house after a
cold run outside
Identify the organelles in the cell. Label A Label B Label C Label D
Answer:
This question is incomplete
Explanation:
This question is incomplete but the completed/similar question with the diagram is in the attachment below.
First of all, the cell is a plant cell because of the presence of the large central vacuole present and also the green colour of the outer part of the cell (which is not a coincidence). Let's proceed to identifying the organelles.
Label A is the large central vacuole. This is not the nucleus as might be confused with because the nucleus is the next big reddish organelle to the right of the vacuole.
Label B is the cell wall. Because this is a plant cell, it has a cell wall which can be clearly seen to be the most outermost layer. While the next yellow boundary line is the plasma membrane.
Label C is the chloroplast. Recall from elementary biology that the chloroplast stores the green pigment chlorophyll. The green colour of this internal organelle makes it identifiable as the chloroplast.
Label D is the starch granule. The shiny semicrystalline structure of this organelle makes it identifiable as the starch granule.
Answer:
Chloroplast, Vacuole, Cell wall, Endoplasmic reticulum
Explanation:
Label A: Chloroplast
Label B: Vacuole
Label C: Cell wall
Label D: Endoplasmic reticulum
The letters that make-up the genetic code for a trait
O a. genotype
O b. trait
O c. heterozygous
O d. phenotype
What are two tools used for sending information? cars and buses water and wind smoke and wood radio waves and lightwaves
Answer:
radio waves and lightwaves
Explanation:
Radio waves and light waves are both types of electromagnetic waves in the electromagnetic spectrum. Radio waves and light waves travel a particular distance and hence, are used to convey information over distances.
Based on this question, radiowaves and light waves are both tools used to send information. Radiowaves carry information from the station to the receiver, likewise light waves from one medium to another.
A student is investigating gas production of water plants of various sizes. She predicts that larger plants produce more oxygen. She places a test tube and funnel upside down over a water plant submerged in water. The test tube collects gas the plant produces when in sunlight. A diagram of her setup is shown below.
In this experiment, what is the independent variable?
A.The number of gas bubbles
B. The varying size of the plants
C. The test tube used to collect gas
D. The temperature of water in the beaker
Answer: The test tube used to collect gas (C)
Explanation: If you illuminate a plant (I presume you are using an aquatic/water plant) it will produce oxygen. You can put the plant under a funnel and collect the bubbles in an upturned test tube. If the gas is collected fresh, it will relight a glowing splint. However, if the gas takes more than 24 hours to collect, or if you leave it for several hours before testing it, you may not relight a glowing splint.