Structure D , The term "contractile vacuole" refers to this structure. The vacuole gathers extra water from the cytoplasm and contracts to release it. As a result, paramecium doesn't swell and explode in hypotonic liquids.
Why are contractile vacuoles necessary for organisms?Specialized contractile vacuoles control the amount of water in cells. Its spherical form allows it to gather extra cell fluid and empty it outside. It is essential for preserving the osmotic pressure inside the cell. Protists are eukaryotes with only one cell and are found in wet and aqueous habitats.
The name "contractile vacuole" refers to what?As its name implies, the contractile vacuole expels water from the cell by contracting. The contractile vacuole periodically expands (collecting water) and contracts (releasing water). Several seconds are required for one cycle, depending on the species .
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Plants use the sun’s light energy to make their own Choose... , which they need to grow. This is an example of how light energy is converted to a form that can be stored for later use.
Answer:
plants make their own glucose
biological term for the germ layer that gives rise to the nervous system
How are eukaryotic cell walls different from bacterial cell walls?
HELP PLSSS !!
Based on this data, what can be concluded about the impact
seasonal changes have on these organisms around the Barents Sea?
A. The availability of solar energy limits photosynthetic productivity in winter months
B. Seasonal Changes have no impact on these organisms
C. During winter months the Diatom and zooplankton population completely die off due
to the lack of sunlight.
D. Due to the availability of solar energy, Diatom mass peaks in July.
Answer:
D. Due to the availability of solar energy, Diatom mass peaks in July.
Explanation:
Diatom are the photosynthetic algae which prepare food for themselves from the solar radiation just like plants. These diatoms produce more biomass or vegetation in the summer season mainly in July because availability of more sunlight in the Barents sea region while on the other hand, less biomass in the winter season due to low temperature and solar radiation which also effects the population of zooplankton organisms. So we can conclude that seasonal changes have a great impact on the organisms living around the Barents Sea.
Answer:
The availability of solar energy limits photosynthetic productivity in winter months
Explanation:
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Your friend runs out of gas and you have to help push his car. Discuss the sequence of bones and joints that convey the forces passing from your hand, through your upper limb and your pectoral girdle, and to your axial skeleton.?
Answer: The sequence of bones and joints that convey the forces include: From metacarpal bones --> carpal bones --> midcarpal and radiocarpal joints --> radius and ulna bones --> elbow joint --> humerus --> glenohumeral joint --> scapula --> acromioclavicular joint --> clavicle --> sternoclavicular joint --> sternum.
Note: the sign (-->) represents "into the".
Explanation:
The skeletal system is made up of bones of the skeleton, their joints and the skeletal muscles which acts together to bring about different movements in the body. The skeleton of a vertebrate had the following basic plan:
--> The axial skeleton: this forms the main central axis. This is made up of the skull,vertebral column, breastbone (sternum), and ribs.
--> The appendicular skeleton: this consists of parts that articulates with the axial skeleton. This is made up of the forelimbs, hindlimbs, pelvic and pectoral girdles.
From the question given, in an attempt to help push the friend's car, the sequence of bones and joints that convey the forces will pass from METACARPAL BONES of your hand into the CARPAL BONES at the base of your hand. Forces will then pass through the MIDCARPAL and RADIOCARPAL JOINTS into the RADIUS and ULNA bones of the forearm. These will pass the force through the ELBOW JOINT into the HUMERUS of the arm, and then through the GLENOHUMERAL JOINT into the SCAPULA. The force will travel through the ACROMIOCLAVICULAR JOINT into the CLAVICLE, and then through the STERNOCLAVICULAR joint into the STERNUM, which is part of the axial skeleton.
As one pushes against the car, the forces will pass in a sequential manner from the bones of the hand to the bones that are part of the axial skeleton.
• Forces will pass from the metacarpal bones of the hand into the carpal bones at the base of the hand, when one pushes against the car.
• After that the forces will then mediate via the radiocarpal and midcarpal joints into the ulna and the radius bones of the forearm.
• Then the force will move via the arm's humerus, and then via the glenohumeral joint into the scapula.
• The force then will mediate via the acromioclavicular joint into the clavicle, and then via the sternoclavicular joint into the sternum, that is, the part of the axial skeleton.
Thus, in the given case, force gets mediated through the bones of the hand and towards the bones of the axial skeleton in a sequential manner.
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HELP BIOLOGY 50 POINTS !!!!!!
Biology fill in the blanks
below i attatched the blanks you have to fill
heres the words you have to use
-
lactase
repressor
transcribe
dairy products
e.coli
rna polymerase
operator
transcription
repressor
operator
lactose intolerant
protein
enzymes
bases
--
in the answer just put - the # and the answer for each blank
WILL GIVE BRAINLIEST
Answer:
1. lactose intolerant
2. lactase
3. dairy products
4. e.coli
5. enzymes
6. protein
7. repressor
8. operator
9. rna polymerase
10. transcribe
11. bases
12. repressor
13. operator
14. transcription
Part 1: Include your answers to questions 1-4 and any Important facts about the cause and types of water erosion
Part 2: Include your answers to questions 1-7 and any Important facts about the effects of water erosion through your research.
Part 3: Include a visual display and any sources used when conducting your research.
Use the space below to submit your research.
Answer:
w
Explanation:
There are several buffer systems involved in maintaining blood pH, but one is more important than the others for maintaining acid-base homeostasis in blood. To understand why an acid-base imbalance in the blood results from respiratory depression, you must first identify the major buffer system responsible for controlling blood pH. Which equilibrium reaction is the most important for maintaining acid-base homeostasis in the blood?
Answer:
The Carbonic-Acid-Bicarbonate Buffer. In animals with lungs, the carbon / bicarbonate buffer system is especially effective. In these animals, the H2CO3 in the blood plasma is in equilibrium with the gaseous CO2 present in the airspace of the lungs, which represents a practically unlimited reserve of CO2 that can participate in the equilibrium.
Explanation:
In the Carbonic-Acid-Bicarbonate buffer system, 3 reversible equilibria take place between the CO2 gas in the lungs and the bicarbonate dissolved in the blood. The bicarbonate ion (HCO3-) can combine with a proton (H +) to form carbonic acid (H2CO3), thus absorbing protons from solution and raising blood pH. Carbonic acid, which can be formed from CO2 and water, can dissociate into H + and HCO3- to provide H + and lower blood pH. Carbonic acid, which can be formed from bicarbonate, is converted to CO2 and water by a very fast enzymatic reaction. CO2, being volatile, can be rapidly eliminated from the body in variable amounts through respiration.In the clinic, the system that is measured for the assessment of the acid-base status is the carbonic / bicarbonate system.
help match the words
1.urbanization
2.
deforestation
3.
burning Fossil Fuels
4.
mining
a.
removal and destruction of trees results in massive species extinctions and disrupts the balance of gases in Earth's atmosphere
b.
releases greenhouse gases that disrupt Earth's natural cycles and climate patterns causing rapid changes to habitats and weather that organisms cannot adapt to
c.
reduces populations and causes extinctions by forcing out native species and replacing their habitat with human civilizations, non-native, and invasive species
d.
poisons and destroys habitats by releasing toxic metals into the environment and destroying surface features
Which of the following is necessary for DNA replication to occur?
Answer:
all the above.
Explanation:
all the above
BIOLOGY CIRCULATORY SYSTEM!! WILL NAME BRAINLIEST IF YOU ANSWER CORRECTLY!!
Answer:
Q1)Heart,Lungs,Arteries,Veins,Vessels
Q2)Blood vessels flow blood throughout the body. Arteries transport blood away from the heart. Veins return blood back toward the heart. Capillaries surround body cells and tissues to deliver and absorb oxygen, nutrients, and other substances.
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Explanation:
Sickle cell anemia is a genetic condition that occurs because of a single point mutation in the DNA gene for hemoglobin. How is this mutation expressed in humans?
A.) The protein coded by the DNA has a different amino acid sequence
B.) The chromosome caring this gene changes shape during cell reproduction
C.) The hormones in the bladder change by increase differences in genes
D.) The carbohydrate code by the DNA has a different structure
Answer:
B.) The chromosome carrying this gene changes shape during cell reproduction
Explanation:
According to this question, Sickle cell anemia is a genetic condition that occurs when the HBB gene that codes for haemoglobin protein undergoes a point mutation. Mutation alters the genetic sequence of a gene.
This mutation expresses itself when the chromosome 11 carrying the mutated gene changes shape during cell reproduction. Normal Red Blood Cell has a disc-shaped structure, however, this mutation causes a change in shape of the chromosome involved.
Deforestation Although we are making some strides toward sustainable forestry, we are stil deforesting 13 million hectares (32 million acres) globally each year. When balanced against forest regrowth, this deforestation gives us an annual net loss of 7.3 milion hectares (18 million acres). While deforestation has a number of causes, there are steps we can take to reduce the loss of forests and the consequences of deforestation The following answers for the Causes and Consequences features are examples and are not intended to represent a comprehensive list. In addition, the sequence of items is not meant to connote relative importance. Sort the examples below into the appropriate bin substitution of other materials for wood products soil erosion growing demand for wood products increased tree planting change in hydrologic cycle with more surface runofl subsistence grazing recycling of paper products expansion of farming decreased carbon Causes Consequences Solutions
Answer:
Substitution of other materials for wood products
Recycling of paper products.
Expansion of farming
Explanation:
To decrease the rate of deforestation, we have to make a substitute of other materials for the wood products in order to lower the demands of wood. Recycling of paper and other wood products which can be used again that reduces the demands of wood and lowers the cutting of trees. If we expand the farming of trees for the wood purpose, so we can fulfill our needs of wood and there is no need for the cutting of trees for fulfilling the demand of the wood.