Answer:
False
Explanation:
Important parts of circulatory system are heart, capillaries, veins, and arteries. The arteries are responsible for carrying red blood from heart and deliver oxygen to capillaries. Then capillaries deliver the waste carrying blood or deoxygenated blood to veins back to the heart.
But not all arteries carry blood with oxygen, the pulmonary arteries carry deoxygenated blood and not all veins carry blood with carbon dioxide, the pulmonary veins carry blood with oxygen.
Hence, the given statement is true.
Prokaryotic cells NEVER have a nucleus
A. True
B. False
Answer:
false
Explanation:
Answer:
The answer is A. true
Explanation:
Please help me answer this
What are some ways another kind of natural disaster could change an environment and change the selective pressures felt by a species?
Answer:
Strong volcanic eruptions and fires can temporarily change regional weather, cooling or heating the air, changing winds, or causing rain. Volcanoes, storms, and floods can kill marine animals directly, or cause long-term problems by depositing debris and affecting the temperature and salinity of water.
Explanation:
Some ways through which natural disasters could change an environment and change the selective pressure felt by a species are volcanic eruptions, wildfires, floods, droughts, storms, acid rain, etc.
What is Species?Species may be defined as the collection of organisms that can significantly reproduce with one another in nature in order to produce fertile offspring. It is the basic unit of classification and a taxonomic rank of an organism.
According to the context of this question, effective and long-lasting volcanic eruptions and fires can significantly change regional weather. Apart from this, actions like cooling or heating the air, and alterations in wind patterns and directions that typically cause rain also change an environment and change the selective pressure felt by a species.
Therefore, some ways through which natural disasters could change an environment and change the selective pressure felt by a species are volcanic eruptions, wildfires, floods, droughts, storms, acid rain, etc.
To learn more about Selective pressure, refer to the link:
https://brainly.com/question/2315759
#SPJ6
What posture is a dog displaying if she is leaning away from your, body lowered, ears back, tail down, showing whites of her eyes and the corners of her mouth pulled back.
Answer: Fearful and worried posture
Explanation:
Since dogs cannot talk, their body languages are used to interpret whatever emotion or feeling they may be experiencing.
When a dog is afraid, she tries to look small. She lowers her body and and leans away so that her center of gravity is over her hind legs to make a quick retreat easy. She also puts her tail down and ears flattened back to her skull. Her eyes also look rounder than normal and she shows the whites of her eyes (whale eyes).
All these tell that a dog is scared and worried or feeling tense.
Answer:
Defensive Threat Posture
Explanation:
Whale eye (whites of eyes showing)
Tail down or fully tucked
Piloerection
Ears back or flatten against head
Pupils dilated
Corners of mouth pulled back
Body lowered
Body leaning backward
A defensive threat posture indicates a dog is being self-protective. This is seen in a dog who is fearful and would prefer to run away from the situation, but may bite if provoked or cornered. Stress signals were offered in the beginning, however ignored and the dog is showing extreme fear.
What type of solution is this red blood cell placed in?
A. Hypotonic
B. Isotonic
C. Hypertonic
what component of the blood does Warfarin affect
Answer: These drugs are often used to treat similar conditions.
Warfarin works by stopping your body from forming blood clots. It does this by blocking the formation of blood clotting factors, which are needed to make clots.
Which hypothesis helps to explain why all organisms share the same genetic code?
which of the following statements about extinction is true?
a) extinction is the ultimate fate of all species
b) extinction can occur in small areas
c) extinction can be caused by the introduction of exotic species
d) all of the above
Answer:
The answer is D. ALL OF THE ABOVE on PEX
Explanation:
i just took the quiz!
What is an astronomical unit or AU?
A)
A unit of time equal to one light year or 6 trillion miles.
B)
A unit of distance equal to the average distance from Earth to the Suntor
93 million miles.
A unit of distance equal to the size of the Milky Way Galaxy or 100,000
light years across
D)
A unit of time that is equal to the amount of time it takes light to travel
from the Sun to Earth,
Answer:
B
Explanation:
The correct option should be B.
The Astronomical Unit, AU, is a measurement unit for length in general astronomy and represents the mean or the average distance of the sun from the earth.
Mathematically, in astronomy,
1 astronomical unit = 150,000,000 km
But then, 1 km = 0.621371 mile
Hence,
150,000,000 km = 150,000,000 x 0.621371 miles
≈93,000,000 miles
Therefore, 1 astronomical unit can also said to be approximately equal to 93,000,000 miles.
The correct option is B
The following is the results of a genotype being "foiled" for a dihybrid cross: BS | Bs | bS | bs
Determine the parents genotype
A) BBSS
B) BBss
C) BbSs
D) BbSS
Answer:
C. BbSs
Explanation:
The foiled results of the genotype include both capital and lowercase versions of both letters, b and s.
This means the genotype has to be heterozygous for both the B and S traits, since the foiled results have both dominant and recessive alleles.
So, the genotype must be C, BbSs
The foiled results of the genotype for the offsprings include BS | Bs | bS | bs.
The parent's genotype will then be BbSs.
The genotype of both parents have to be heterozygous as a result of the
presence of its forms in the B and S traits. There is the presence of the
dominant (B,S) and recessive traits (bs).
The genotypes of the parent will however have both traits in them which
translates to the option C) BbSs being the most appropriate.
Read more on https://brainly.com/question/21102431
ASAP HELP ANSWER THIS QUESTION ILL GIVE COINS!
Which of the following is an example of a behavioral adaptation?
A possum playing dead when scared by a predator
Feathers of a bird regulate temperature
Earthworms use setae to move through the soil
Fish use gills to extract oxygen from the water
Answer:
a possum playing dead
Explanation:
only one that behavioral
Answer:
A
Explanation:
This is something the possum learned to do
What happens when light strikes a transparent object?
A All the light passes through the object
B. None of the light passes through the object
C. All of the light is reflected then reabsorbed
D. Some of the light is scattered or absorbed and some passes through
Answer: A. All of the light passes through the object.
Explanation:
The setup shows four test tubes. Tube 1 contains water only. Tube 2 contains a live snail. Tube 3 contains a live green water plant. Tube 4 contains both a live green water plant and a live snail. We know that plants can photosynthesize. We also know the product of photosynthesis is the reactant of cellular respiration.
In this setup, which tubes contains and organism(s) carrying on cellular respiration?
a) tubes 2 and 4, only
b) tubes 3 and 4, only
c) tubes 2, 3, and 4 only
d) tubes 1 and 2, only
pls help as fast as u can! <3
Answer:
c) tubes 2, 3, and 4 only
Explanation:
Cellular respiration is a metabolic process in which cells of living organisms break down organic molecules to synthesize or release energy in form of ATP. Because all cells require or need energy (ATP) for their functioning, cellular respiration is carried out by ALL LIVING ORGANISMS.
According to this question involving four test tubes that contain the following:
- Tube 1 contains water only.
- Tube 2 contains a live snail.
- Tube 3 contains a live green water plant.
- Tube 4 contains both a live green water plant and a live snail.
Cellular respiration will be carried out in the test tube that contains any living organisms. These test tubes are test tubes 2, 3 and 4 as they contain live green plants and snail.
8. There can only be one logical inference for any given observation. (T/ F)
7.
Students were investigating the movement of water through a semi-pern
with the salt concentration shown below.
Answer:
It depends on the salt concentration inside the cell.
Explanation:
The movement of water through a semi-permeable membrane with different salt concentrations depends on the amount of water and salt concentration in the cell. If the cell has more salt concentration so no more salt moves inside the cell but moves outside the cell while on the other hand, if the cell has low amount of salt than the outer environment then the salt moves inside the cell until its concentration are equal.
Describe the role of fermentation in maintaining ATP and NAD+ levels
Answer:
Please find the description of the role of fermentation in the production of ATP and NAD+ levels below.
Explanation:
Fermentation is a form of anaerobic respiration in which glucose is broken down in the absence of oxygen to produce carbon dioxide and alcohol or lactic acid depending on which type of fermentation it is.
Fermentation process makes use of the electron carrier, NADH, mad oxidizes it back to NAD+. This electron acceptor molecule is strictly required in the glycolysis process. Hence, fermentation helps convert NADH to NAD+ needed by glycolysis for the production of few ATP molecules. In summary, fermentation may not directly synthesize ATP but it helps produce the molecule (NAD+) needed to synthesize it.
If you crossed two heterozygous parents for a specific trait, what would the resulting genotype and phenotype ratio of offspring be?
20 POINTS
Which two statements describe how the bodies of most multicellular living things are organized?
Which of the following are by-products or left-overs of photosynthesis?
A. glucose, carbon dioxide, & water
B. ADP+P, ATP, & oxygen
C. oxygen, ADP+P, & NADP
D. carbon dioxide, water, & NADP
An example of a mineral needed in large amounts is ___________________.
Answer:
Some minerals are needed in larger amounts than others, e.g. calcium, phosphorus, magnesium, sodium, potassium and chloride
calcium, phosphorus, magnesium, sodium, potassium and chloride.
What are the 3 types of ocean pollution? And which one can make fish unsafe to eat?
Answer:
Oil, Plastic, and Noise pollution.
Explanation:
Plastic I'm thinking is unsafe for the fish, that or oil
Can I maybe have brain list if I'm right? Sorry if I'm wrong...
(GIVING BRAINLIEST!!!!)
Answer:
it's definitely saturn and jupiter
What do the decomposers do to return atoms back to the biogeochemical cycles
Answer:
i think it is none of your ssniper wolf
Explanation:
During early adulthood, significant hormonal changes continue. What is a result of this in some males?
a. beginning of production of testosterone by the testes
b. beginning of sperm production
c. beards grow thicker and their voices become slightly deeper and richer
d. increased body hair begins
Answer:
A
Explanation:
Answer:
c. beards grow thicker and their voices become slightly deeper and richer
Explanation:
Early adulthood scientifically lasts from age 20 to age 39, so, while you may be thinking puberty (hair growth, etc) it is more subtle changes such as the fact that the voice 'become slightly deeper and richer' . Both males and females continue to put on more weight (hormonal, not dietary!). Hope this helps! :)
The first is red cell (erythrocyte)
the second is white cell (leukocyte)
b) Which organelle is missing in the red blood cell?
c) Describe a feature that shows the difference between a red blood cell and other cells in the human body.
d) Explain how red blood cells are adapted to perform their function.
e) Describe the functions of white blood cells.
plzz plz help plz
Answer:
leukocyte
Explanation:
leukocyte is the organelle missing in the red blood cell.
What is the importance of a system of classification of living organisms? *
Answer:
It helps in the identification of living organisms as well as in understanding the diversity of living organisms. Classification helps us to learn about different kinds of plants and animals, their features, similarities and differences. It enables us to understand how complex organisms evolve from simpler organisms
Explanation:
Hope this helps
Maltase is an enzyme that is not able to catalyze the synthesis of lipids because maltase-
A.has a specific active site
B. Is a small molecule
C. Cannot attach to ribosomes
D. Is a simple sugar
Maltase is an enzyme that is not able to catalyze the synthesis of lipids because maltase has a specific active site.
ENZYME:
Enzymes are biological molecules that act as catalyst in living organisms. They are proteinous in nature. Enzymes have the following listed characteristics:Enzymes are not changed by the reactions which they catalyse. Enzymes are substrate-specific i.e. they act on specific substratesEnzymes functionality is dependent on pH and temperatureMaltase is an example of enzyme that specifically acts on maltose (a sugar molecule). Therefore, Maltase is an enzyme that is not able to catalyze the synthesis of lipids because maltase has a specific active site.Learn more at: https://brainly.com/question/23984210?referrer=searchResults
what characteristic do all minerals have
hi the answer is that minerals is from the earth
Answer:
Most minerals can be characterized and classified by their unique physical properties: hardness, luster, color, streak, specific gravity, cleavage, fracture, and tenacity.
Explanation:
In a lake ecosystem, the atmospheric sciences component of environmental science might deal with _______. A. air pollution B. study of lake organisms C. study of chemicals dissolved in the lake D. study of the impact of surface runoff
Answer:
C. study of chemicals dissolved in the lake. I think that's the answer
Explanation:
Which behavioural adaptation was shown by butterfly"
A. Mimicry
B.predation
C. Protection
D.camouflage
write difference between aerobic and anaerobic repiration?
Explanation:
Aerobic respiration takes place in the mitochondria and requires oxygen and glucose, and produces carbon dioxide, water, and energy.
Anaerobic respiration also produces energy and uses glucose, but it produces less energy and does not require oxygen