Answer:
A
Explanation:
In the investigation of oxygen dynamics in E. chlorotica cultures,
gross photosynthesis is reported after seven months in culture, even
in the apparent absence of oxygen production.
Which statement provides the best reasoning to explain this
observation?
A. The oxygen produced in photosynthesis is used in cellular respiration.
B. Photosynthesis can be sustained in the absence of oxygen production.
C. The plastids store oxygen for use in photosynthesis.
D. The ability to carry out photosynthesis is transferred from the
chloroplast to the mitochondria.
Answer:A
Explanation: Teacher gave me the answer
Which statement describes landforms
ill give brainly pls help
Explanation:
C: x25 for sure for sure...
The wing of a bee and the wing of a bird are considered to be - A B s C D
A.) Vestigial structures
B.) Homologous structure
C.) Analogous structures
D.) Evolutionary structures
Answer:
c.) analogous structures
Explanation:
A bee's wing shape is similar to bird wings but has an entirely different structure to it, this makes it analogous.
Select the correct answer.
Which part of the brain controls functions such as eye movement, body movement, and vision?
Α.brainstem
B.forebrain
C.midbrain
D.hindbrain
Answer:
Pons. A deep part of the brain, located in the brainstem, the pons contains many of the control areas for eye and face movements.
Explanation:
please give me brainlist and follow
Answer: C (Midbrain)
source: trust me bro
Use the same article to answer the following questions. Muscle Contraction What happens if there is not enough ATP available?
If there is not enough of ATP molecules available then, there is no muscle contraction.
What is Muscle contraction?Adenosine triphosphate (ATP) is a way to store and also uses this energy in the breaking down the complex compounds which are present in the food that we eat. If there is not enough amount of ATP present, then this could lead to a lesser oxygen available in the cell on the food being eaten. Hence, this will affect the energy that we can get from a certain type of food particles.
Muscle contraction is the process of tightening, shortening, or lengthening of the muscles when a person do some type of activity. Muscle contraction can happen when a person can hold or pick up something, or when a person can stretch or exercise with weights.
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A human disease termed cardioencephalomyopathy results from a genetic change in the normal function of mitochondria. Babies who are born with the disease generally die from it. Scientists who study this disease using a bacterium known as Paracoccus denitrificans. Scientists were able to produce the same change in the bacterium’s genes that they found in the mitochondria of their human patients.
What is the BEST explanation for why scientists can use a bacterium to study this human disease?
A
Bacterial genes are very similar in structure to human genes.
B
Bacteria can be used as a model to study more complex cells.
C
The genes and chemical pathways found in bacteria are similar to those in human mitochondria.
D
The eukaryotic cells of humans share many characteristics with bacterial cells, including single stranded DNA.
The eukaryotic cells of humans share many characteristics with bacterial cells, including single stranded DNA. Thus option D is correct.
what is the structure of DNA ?DNA is referred as deoxy ribo nucleic acid, which is a nucleic acid, with a left handed double helical structure, are the basic unit of every living cell
It carry all genetic material responsible for expression of a character of an living organism; It is made up of nitrogenous base, sugar mainly pentose sugar and phosphate.
Nitrogenous base are purine and pyrimidine such as adenine, guanine, thiamine, cytosine; Adenine can pair with thiamine by two hydrogen bond where as cytosine can pair with guanine by three hydrogen bond.
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Desmond is wearing a purple shirt to school. Which colors are being absorbed by the shirt to make it look purple? A purple, blue, yellow, red, and green B red, orange, yellow, green, and blue C blue, purple, red, green, and orange D orange, yellow, blue, purple, and green
An organism's phenotype depends on what?
A. Father's DNA
B. Genotype
C. Environmental factors
D. Genotype and Environmental factors
A “flight or fight” response occurs when the body perceives a type of threat. The hormone known as adrenaline is released which will affect a variety of body systems. Which system needs to increase its activity in order for the muscular system to respond to the perceived threat?
A)Endocrine
B)Integumentary
C)Excretory
D)Digestive
Answer:
It is the Endocrine System.
Explanation:
The Endocrine System controls and regulates almost all the hormones in your body.
Integumentary System = Skin Tissues
Excretory System = Release of Waste out of the Body
Digestive System = Breakdown of Food
Which statement is true about gravitational forces?
A.
Every mass exerts a gravitational force on every other mass.
B.
Only masses of equal size exert a gravitational force on each other.
C.
Only moving masses exert a gravitational force on stationary masses.
D.
Only large masses exert a gravitational force on small masses.
Given RRYY x Rryy, what will the parents be? Help (real answers only please)
what consists of 2 protons and neutrons and is positively charged
Hello my name is Tobie and I will be more than glad to help!
your answer should be alpha particle
consisting of two protons and two neutrons emitted by radioactive materials we get what is called a alpha particle
they are usually formed when identical to the nucleus of the helium-4 atom are emitted by radioactive matter !
What can they do to the body?
Since they have radioactive material in them they are very DANGEROUS! If they are inhaled swallowed or somehow get inside our bodies it can cause serious harm!They can harm sensitive living tissue and can go as far as to causing cancer !
What is their electric charge?
+2 e
What is their symbol ?
α, α2+, He2+
Hope this helps!
-Tobie The dog <3
Answer:
Alpha particle
Explanation:
A positively charged particle made up of two protons and two neutrons and released by a radioactive nucleus is the alpha particle.
I need an answer for Question 4 please:)
Answer:
c
Explanation:
mRNA is basically the same except it has U instead of T
Answer:
option C is correct answer
hope it helps
which of the following is not a virus?
Answer:
the answer is letter A
Explanation:
I hope this answer has helped you
Couples who both have normal colour vision and have a child with colour blindness. Explain how this may happen, and state that the sex of the colour blind child must be.
Please help me
Answer:
Im not sure what state but that is my reason
Explanation:
Maybe it has to do something with there gens or someone eles in there family ahd it and maybe it just got passed down to the baby instead of the parents i hate to say this but sometimes that happens.
factors influencing soil formation
Answer:
Soil Forming Factors
Parent material. Few soils weather directly from the underlying rocks. ...
Climate. Soils vary, depending on the climate. ...
Topography. Slope and aspect affect the moisture and temperature of soil. ...
Biological factors. Plants, animals, micro-organisms, and humans affect soil formation. ...
Time.
Explanation:
Which Asexual reproductive strategy involves dividing in two and regrowing into a separate organism
A. Budding
B. Parthenogenesis
C. Fragmentation
D. None of the above
D i think.. i hope you do good!!
Answer
d
Explanation:
i think its binary fission
what is osmosis ANSWER FAST
Three of these could be grouped into a similar category. Which one does not belong. Explain why? brain, liver, skin, and femur
Some desert plants respond to darkness by opening their flowers at night to lure in pollinators. In
this situation, a plant's response system is working in conjunction with the —
immune system.
vascular system.
reproductive system.
root system.
Answer:
B
Explanation:
In this situation, a plant's response system is working in conjunction with the vascular system. Therefore, option B is correct.
What is a vascular system?The complex network of conducting tissues known as the plant vascular system connects all organs and carries water, nutrients, organic compounds, and different signaling molecules throughout the body of the plant. The primary transport systems of plants, xylem and phloem, make up vascular tissue. They often coexist in vascular bundles that cross the roots, stems, and leaves of all plant organs. Water and dissolved ions are moved upward through the plant through the xylem, starting at the roots.
Clubmosses, horsetails, ferns, gymnosperms (including conifers), and angiosperms are examples of vascular plants (flowering plants). The group is known by its scientific names, Tracheophyta, and Tracheobionta.
Some desert plants respond to darkness by opening their flowers at night to lure in pollinators. In this situation, a plant's response system is working in conjunction with the vascular system. Therefore, option B is correct.
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Where do living things get their traits?
Answer:
genes containing dna.
Explanation:
during reproduction genes containing dna, are passed along to an organisms offspring. these genes ensure that the offspring will belong to the same species.
What happens in the gray zone between solid and liquid? Can we find a unified theory of physics?
The change of grey zone is very crucial which includes the inter molecular force perfroms on the molecules and each atoms which makes the change of condition from hot to cold and cold to hot.
In the wild, are all organisms likely to survive?________
Answer:Natural selection,
Explanation:
need this please thanks
Answer:
Sequence C
The career of Jacques Cousteau illustrates that
values can shift over the course of a career
focusing on a single task is the best strategy for change
only highly educated people can raise environmental awareness
publicity plays an insignificant role in advancing a scientist's causes
Needdd helllppp
Answer:
focusing on a single task is the best strategy for change
Explanation:
The career of Jacques Cousteau illustrates that focusing on a single task in life is the best strategy for the change in the social life of an individual as well as in the society. If a person performs many activities at the same time so its focus and concentration divides over the activities which is not more advantageous as compared to that person who focus on the single task until it is completed so focus on the single task in life is necessary for producing big change in life and in the society.
Cystic fibrosis is a genetic disorder. It is a recessive trait that is determined by two alleles. Suppose two parents each carry at least one recessive allele, but neither of them has cystic fibrosis. Which statement reflects the likelihood of a child of these parents having cystic fibrosis?
The child cannot have the disease because only the dominant alleles will be passed on.
The child will have the disease because only recessive alleles will be passed on.
The child may or may not have the disease because a recessive gene from each parent may be passed on.
The child may or may not have the disease because the disease does not depend on the alleles of the parents.
Answer: its C, The child may or may not have the disease because a recessive gene from each parent may be passed on.
Explanation: good luck
PLEASE HELP! i inserted a pic will give brainliest if right
A cold, dry air mass collides with a warm, humid air mass over the land. The warm air mass is forced upward quickly. As the air rises, it cools and condenses. What type of weather phenomena is forming?
A.
a hurricane
B.
a tsunami
C.
a thunderstorm
D.
a flood
Analyze
1. What are the biotic and abiotic factors the scientists monitor which influence this
bat population?