In what way are autotrophic protists essential to the survival of aquatic ecosystems?
A. They remove toxins from the water.
B. They produce extensive reefs.
C. They serve as the base of the food chains.
D. They convert nitrogen gas into ammonia.
Who first recognized the cell as the universal unit of life?
Virchow
van Leeuwenhoek
Hooke
Schleiden and Schwan
Answer: Robert Hooke
Explanation:
He had observed the cells in thin sliced corks using a microscope.
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How long does it take to go through a complete cycle of phases, namely from one New Moon to another New Moon?
Based on what you learned about the roller coaster ride, which of the following statements
about energy transformations are true? select all that apply
-kinetic energy can be converted only into gravitational potential energy.
-an object’s kinetic energy changes whenever the objects speed changes.
-more than one type of energy can be converted into kinetic energy.
Answer:
I hope this really helps (A) is the answer
Explanation:
it can pysically
4 question brainly Est
The answer is
C. oxygen and sugar
Which statement is one component of the cell theory
Answer is that the cells exist inside the body
Explanation:
i went to science class 1 time in freshmen year
Answer:
All living cells arise from pre-existing cells is one component of the cell theory. The Cell Theory states: 1. All living organisms are composed of cells. They may be unicellular or multicellular. 2. The cell is the basic unit of life.
As blood volume decreases, blood pressure ____________ . If greater than ____________ of the blood volume is lost from the blood vessels, the ____________ division of the autonomic nervous system (ANS) is activated, bringing about ____________ vasoconstriction of blood vessels, increased heart rate, and force of heart contraction in an attempt to maintain blood ____________ . These processes are effective in maintaining blood pressure until approximately _______
Explanation:
Decreases, 40%, Sympathetic, Increased, Pressure, 10%.
Which of the following is the correct definition of biotechnology?
Answer: Biotechnology is the area of biology that uses living processes, organisms or systems to manufacture products or technology intended to improve the quality of human life.
Explanation:
Your welcome
Answer:
The cornea and the lens help to focus the light rays onto the back of the eye { RETINA}. The cells in the retina absorb and convert the light to electrochemical impulses which are transferred along the optic nerve and than to the brain.
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James is researching the advantages of varying beak sizes of four bird species in a local habitat. He records and graphs the data to show how many individuals there are in each species with different sizes of beak. The graph is provided. If all four species of birds are transported to a new habitat with completely new food sources, which species will most likely be able to avoid extinction?
Answer:
The birds with long pointed beaks.
Explain:
Birds beaks developed different tastes for fruits, seeds, or insects picked from the ground or cacti. Long, pointed beaks made some of them more fit for picking seeds out of cactus fruits.
Birds with larger, thicker beaks are better adapted to crush and open seeds and foods that are larger. So a bird with a small beak could not eat it.
The __________ communicates with the cerebrum. A. Brainstem B. Thalamus C. Hypothalamus D. Forebrain Please select the best answer from the choices provided A B C D.
Answer:
c
Explanation:
God bless I hope is it correct
Answer:
B
Explanation:
:)
Why does salt start to dissolve in water without being stirred or shaken?
Answer:
A common misconception about dissolving is that heating and/or stirring are required for the dissolving process to occur. In this study, quantitative experimental evidence was collected and analyzed to demonstrate that neither heating nor stirring is required for dissolving
Explanation:
The pattern observed when a heterozygote does not show the trait associated with the dominant allele is
Co-dominance will make the pattern expected for the dominant allele to control the observed trait not to occur.
What is allele?Genes occur in pairs. These pairs of genes determine which traits are expressed in an organism. The allele has a dominant gene and a recessive gene.
Sometimes, the pattern that is expected in which the dominant gene is expressed is not observed due to codominance.
Learn more about codominance: https://brainly.com/question/14053639
In pneumothorax, the lung collapses because ______.
Answer:
here's your answer hope it helps you
Explanation:
a pneumothorax occurs when air leaks into the space between your lung and chest wall. this air pushes on the outside of your lung and make it collapse.
It should be noted that In pneumothorax, the lung collapses because air leaks into the space between lung and chest wall.
What is pneumothorax?pneumothorax can be regarded as one that occur when air leaks into the space between your lung and chest wall.
Then this air is been pushed on the outside of the lung then it will it collapses.
Learn more about pneumothorax at,:
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Describe the process that causes the cloud type
shown to reach heights of over 6000 m.
Answer:
Explanation:
Clouds are formed when air contains as much water vapor (gas) as it can hold. This is called the saturation point, and it can be reached in two ways. First, moisture accumulates until it reaches the maximum amount the volume of air can hold. The other method reduces the temperature of the moisture filled air, which in turn lowers the amount of moisture it can contain. Saturation, therefore, is reached through evaporation and condensation, respectively. When saturation occurs, moisture becomes visible water droplets in the form of fog and clouds.
Can someone help me with that question
Answer:
fine details such as the wings, legs and other fragile structures are preserved effectively giving us a window into how the preserved organism would have appeared in life. without the presence of amber, we wouldn't be able to examine a majority of small prehistoric organisms.
Explanation: amber is able to preserve a snapshot of the ancient world in ways that other forms of fossilization simple fails to do. while an imprint of a feather could be preserved in rock the actual feather could be captured within amber. Amber also preserves small organisms that otherwise would have been lost to time such as the insects seen in the photo above. And much like the gecko seen below it can show us how these organisms truly appeared in life.
Do you think you would best like to treat horses, cattle , or pigs ? Why do you think you’d like to work with that particular large mammal?
gaseous exchange in an insect
Answer:
The Spiracles is/are used for gaseous exchange in insects.
Explanation:
The Spiracles is a respiratory structure or an opening found on the exoskeleton of insects. It acts as a medium of gaseous exchange not only for Insects (Insecta) but also for some Arachnid (spiders and others).
What is the density of a mineral used for?
Answer:
Density is an intrinsic physical property of minerals that relates to the composition of the mineral and to the pattern in which the mineral’s atoms are arranged.
D/B magnetic substance and magnet
Explanation:
Substances that are attracted by a magnet are called magnetic substances. Example: Iron, cobalt, nickel, etc.
fresh water that flows or is stored in bodies of water on Earths surface
stored
picture resembles storage cubes
What process controls water loss by the plant, so that the plant will not wither up and die? Question 3 options: Respiration Transpiration Restoration Photosynthesis.
Answer:the awnser is trasperation
Explanation:
If you wanted to design a tissue that restricted the movement of water and other molecules between adjacent cells, which type of junction would you use to connect the cells?.
Answer:
Candy Land
Explanation:
I used to have it as a kid. Fun game! :D
Carbohydrates are polymers formed of structural units called __________. Select one or more: a. nucleotides b. monosaccharides c. amino acids d. fatty acids
Carbohydrates are polymers formed of structural units called monosaccharides.
What are Carbohydrates?These are chemical compounds which comprises of the elements Carbon.Hydrogen and oxygen and provide the required energy to the body cells.
It is known as a polysaccharide and is formed from the combination of structural units which are referred to as monosaccharides.
Read more about Carbohydrate here https://brainly.com/question/1178789
Choose the substances that can pass through the blood-brain barrier. Multiple select question. all hormones some anesthetics alcohol all metabolic waste all chemotherapy drugs nicotine
Based on the function of the blood-brain barrier, the substances that can pass through the blood-brain barrier are some anesthetics and all hormones.
What is the blood-brain barrier?The blood-brain barrier is a network of blood vessels and tissues which selectively allow the movement of certain substances in blood into the brain bit not others which are harmful to the brain.
Some of the substances that can pass through the blood-brain barrier include:
water,oxygen,carbon dioxide, andsome anestheticshormonesTherefore, from the given options, the substances that can pass through the blood-brain barrier are some anesthetics and all hormones.
Learn more about blood-brain barrier at: https://brainly.com/question/5081276
The effect of landforms on weather// predicting weather explore 4? I need all the answers to this
Answer:
Heating of the landmass during the day causes great convection of air and clouds quickly forms above it. This distinctive feature play a significant role in the production of winds, sea breezes to monsoon winds. hope this helps a little bit :)
Ram's father have 3 childrens first one is tina and second one is mina who is third one
In man, hitchhiker's thumb is domiant to a straight thumb, and brown eyes is dominat to blue eyes. If a man that has a straight thumb and brown eyes in the heterozygous form marries a woman that is heterozygous for hitchhiker's thumb and blue eyes, what is the chance that one of their children will have a straight thumb and blue eyes?
Answer:
25%
Explanation:
T = Hitchhiker's thumb
t = straight thumb
B = Brown eyes
b = blue eyes
The man's genotype is ttBb
The woman's genotype is Ttbb
Make a dihybrid punnett square to find the possible genotypes of the offspring
ttbb is straight thumb and blue eyes. There are 4 out of 16 genotypes with this phenotype so:
Divide 4 with 16 and multiply by 100 to get the percentage of offspring with that phenotype
4 ÷ 16 = 0.25
0.25 × 100 = 25%
How do gametes differ from other cells in the body?.
Answer:
How they are different is Somatic cells are any form of a biological cell, other than a reproductive cell.
If there are 108 Guanine (G) bases in a DNA sequence, how many Cytosine (C) bases are there?
Answer:
108 cytosine because they are complimentary base pairs
f. What happens to the PGAL molecule that does not continue on in the Calvin cycle?
Answer:
The cell uses it to produce glucose and other biomolecules.
Explanation:
The regeneration of significant quantities of RuBP using PGAL molecules allows the Calvin cycle processes to be repeated. The rearrangement of carbon atoms in three-carbon containing molecules to produce five-carbon molecules is required for RuBP regeneration from PGAL.
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Hope this helps!