Answer: average velocity = initial velocity + 1/2 acceleration* time
Explanation:Q8 unavailable, but at constant acceleration a
if initial velocity is v1, final velocity v2 and average velocity (v1+v2)/2 and the time interval t,
v2 = v1 + at and average velocity = v1 + 1/2at
Please help I’ll give brainliest to whoever helps :)
Answer:
1:Cell
2:organ
3:tissues
4:A tissue is a group of similar cells that work together to perform a specific job. Specialized cells form specialized tissues such as blood tissue. A group of tissues working together to perform a specific function is called an organ. Organs are the third level of organization.
Explanation:
Body cells are all I need help
Summary
Food is chemical energy stored in organic molecules.
Food provides both the energy to do life's work and the carbon to build life's bodies.
• Autotrophs make their own carbohydrate foods, transforming sunlight in photosynthesis
or transferring chemical energy from inorganic molecules in chemosynthesis.
Heterotrophs consume organic molecules originally made by autotrophs.
All life depends absolutely upon autotrophs to make food molecules.
Questions:
Use the text above to answer the following questions.
1. Water and carbon dioxide mdlecules are reactants in the process of photosynthesis. Does
this mean they are "food" for plants, algae, and blue-green bacteria? Use the definition of "food
to answer this question.
2. Compare autotrophs to heterotrophs, and describe the relationship between these two grou
3. Name and describe two types of food making found among autotrophs, and give an example of each. which is quantitatively more important to life on earth (Which are there more of)
What is the difference between the cell membrane and the cell wall?
Answer:
Cell membrane helps to enclose the cell organelles and cytosol inside a cell. ... A cell wall is a ridgid, protective layer and it covers the cell membrane. For plants, cell walls are mainly made up of cellulose, while a cell wall in bacteria is made up of peptidoglycan,and for fungi it is made up of chitin.
Explanation:
Which statement is true regarding the transmission of sex-linked traits in a population?
O Males cannot carry recessive alleles for sex-linked traits.
O Males cannot express dominant alleles on the X chromosome.
O Males cannot express recessive alleles on the X chromosome.
O Males cannot pass alleles for sex-linked traits to their daughters.
Answer: none of the statements are true
Explanation: Males can have a recessive copy of a X-linked gene, and can pass that on in the X containing gamete and so pass it on to daughters, but not to male offspring. Males will express whichever allele, dominant or recessive that they carry.
Cellular Respiration occurs in which organelle?
a. ribosome
B. golgi
c.nucleus
d.mitochondria
Answer:
the answer d. mitochondria
Which of the following is conical movement in which the distal end of a structure moves in a circle and the proximal end remains relatively fixed?
A. Protraction
B. Rotation
C. Circumduction
D. Retraction
Answer:
The correct answer is OPTION C (Circumduction)
Explanation:
Circumduction is motions without clear opposites of the part of the body, an example is rotating the hand from the wrist. The answer is circumduction because this type of movement ensures the distal end of a bone moves in a circle while the proximal end remains relatively stable is particularly found in bones where the movements of the joints are opposite to each other example is the ball and socket joint movement. For circumduction to take place, the degree of distance between two bones of the body has to be decreased and sometimes straightened to increase the level of movement or motion produced, there must be a movement towards the middle of the body and sometimes joint movement away from the middle of the body. All these movements are in order.
Which of the following will cause a decrease in ADH production?
(A) dehydration
(B) an increase in osmotic pressure of blood
(C) drinking water
(D) abnormally low blood pressure
A certain species of caterpillar has bright colors that signal that it produces a
highly poisonous substance. Why is this signal important to natural
selection?
A. Predators will know that this caterpillar is a good source of food,
B. Predators that ignore the markings will die from the poison.
C. The bright colors help the caterpillars find each other and mate,
ОО
D. The bright colors will make it easier to find this caterpillar.
Answer:
D. Predators that ignore the markings will die from the poison
Explanation:
The rest of the answers would be negative attribute of the bright colors. Though C may seem correct, the trait of being highly colorful to signal poison has been seen in many other species of animals as well.
Pretend you are a molecule of oxygen and you have reached the blood stream and attached to the hemoglobin on a red blood cell.
Describe as you travel through the different types of blood vessels (capillaries, arteries, and veins) as you make your journey through the different types of circulation (pulmonary/lungs, coronary/heart, and systemic/body) and reach the cells of the body.
Answer:
Blood flowing through the circulatory system transports nutrients, oxygen, and water to cells throughout the body. The journey might begin and end with the heart, but the blood vessels reach every vital spot along the way. These arteries, veins, and capillaries make for a vast network of pipes. If you were to lay out all the blood vessels of the body in a line, they would stretch for nearly 60,000 miles. That’s enough to circle the earth almost three times!
1. The Three Major Types of Blood Vessels: Arteries, Veins, and Capillaries
The different types of blood vessels and their layers
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. The capillaries also connect the branches of arteries and to the branches of veins. The walls of most blood vessels have three distinct layers: the tunica externa, the tunica media, and the tunica intima. These layers surround the lumen, the hollow interior through which blood flows.
2. Oxygenated Blood Flows Away from the Heart Through Arteries
The major arteries and branches of the body
The left ventricle of the heart pumps oxygenated blood into the aorta. From there, blood passes through major arteries, which branch into muscular arteries and then microscopic arterioles. The arterioles branch into the capillary networks that supply tissues with oxygen and nutrients. The walls of arteries are thicker than the walls of veins, with more smooth muscle and elastic tissue. This structure allows arteries to dilate as blood pumps through them.
3. Veins Carry Blood Back Toward the Heart
The superior and inferior vena cava
After the capillaries release oxygen and other substances from blood into body tissues, they feed the blood back toward the veins. First the blood enters microscopic vein branches called venules. The venules conduct the blood into the veins, which transport it back to the heart through the venae cavae. Vein walls are thinner and less elastic than artery walls. The pressure pushing blood through them is not as great. In fact, there are valves within the lumen of veins to prevent the backflow of blood.
4. Exchange of Gases, Nutrients, and Waste Between Blood and Tissue Occurs in the Capillaries
Click to play an animation of blood flow through capillaries
Capillaries are tiny vessels that branch out from arterioles to form networks around body cells. In the lungs, capillaries absorb oxygen from inhaled air into the bloodstream and release carbon dioxide for exhalation. Elsewhere in the body, oxygen and other nutrients diffuse from blood in the capillaries to the tissues they supply. The capillaries absorb carbon dioxide and other waste products from the tissues and then flow the deoxygenated blood into the veins.
5. The Constant Pumping of the Heart Maintains Blood Pressure and Supply Throughout the Body
Click to play an animation of blood pressure measurement
The blood moving through the circulatory system puts pressure on the walls of the blood vessels. Blood pressure results from the blood flow force generated by the pumping heart and the resistance of the blood vessel walls. When the heart contracts, it pumps blood out through the arteries. The blood pushes against the vessel walls and flows faster under this high pressure. When the ventricles relax, the vessel walls push back against the decreased force. Blood flow slows down under this low pressure.
Explain the Identification methods
So meiosis produces I need help
On your visit to New York City, you and your friend observed that the grey rats (Rattus norvegicus) in the New York subway are considerably larger than a typical West Coast rat. You decided to test whether this difference was genetic or environmental. You obtained a litter of 10 New York rat pups, and a litter of 10 California rat pups. Each of you took 5 pups from each litter and kept them in your room for 3 months, despite your roommates' protests. You fed your rats a balanced diet of dry cat food and fresh fruit and vegetables. Your friend, however, has a soft heart and gave her rats french fries, cheeseburger wraps, hot dogs, and other nostalgic New York fare. At the end of your experiment, you found that the New York and California rats that grew up in your home were exactly the same size. Your friend, however, found that her New York rats were larger than her California rats, and both were larger than your rats. So, is the difference genetic or environmental?
Explain why you concluded this.
a. Genetic
b. Environmental
c. Genotype environment interaction
d. a and b
e. b and c
f. a and c
g. a, b, and c
Answer:
d. a and b
Explanation:
The difference in the size of both rats are due to genetic and environmental because rats of both location increased in size which eats a lot of food as compared to those rats which eats balanced diet. This is due to the environment while on the the other hand, due to difference in genetics, New York rats grew larger than California rats of your friend which eats large number of food. So we can say that both genetic and environmental factors affect the rats size.
Describe how radiation fog forms.
Answer:
Radiation fog forms in the evening when heat absorbed by the Earth's surface during the day is radiated into the air. As heat is transferred from the ground to the air, water droplets form. Sometimes people use the term “ground fog” to refer to radiation fog.
I THINK ;)
Answer:
Radiation fog forms in the evening when heat absorbed by the Earth's surface during the day is radiated into the air.
Which type of echinoderm lacks tube feet that are used for movement?
O sea star
O brittle star
O sea urchin
O sea cucumber
Answer: B. brittle star
Explanation:
Help I will give brainliest I need help with 12
Answer: A
Explanation: I hope this helps!
18) What is the difference between eumelanin and pheomelanin?
Answer:
Eumelanin is black or brown pigment and pheomelanin is red or yellow pigment
Which statement describes a disruption that can occur in the cell cycle, leading to the development of
cancer?
A. A virus interferes with checkpoints within the cell cycle, resulting in slower cell proliferation.
B. A virus interferes with checkpoints within the cell cycle, resulting in uncontrolled cell apoptosis.
c. A gene mutation interferes with cell cycle control mechanisms, resulting in uncontrolled cell
proliferation.
D. A gene mutation interferes with cell cycle control mechanisms, resulting in an increased rate of cell
apoptosis.
Answer:
The correct answer is - option C. A gene mutation interferes with cell cycle control mechanisms, resulting in uncontrolled cell proliferation.
Explanation:
Genetic mutations resulting in the change or absence of any regulatory proteins that used during checkpoints can result in the mechanism of turning on or turning off the cell cycle or allow a cell to move further for the division. Due to this change, the checkpoints are not able to prevent it from division.
Uncontrolled multiplication or proliferation of the cell, resulting in tumor development or cancer.
I look in the mirror but i'm not there and instead i see a strange disoriented ghost like figure. Whats wrong with me. Is this a sign of death. Please help me.
Answer:
Science shows that if you stare at your face long enough your brain will get bored and make your face look distorted and ghost like
Explanation:
Answer:
try not to stare into the mirror so long or get some fresh air outside
What is a sand cats primary diet?
Answer and explanation:
Sand cats eat primarily small rodents, occasionally hares, birds, spiders, insects and reptiles. They are fearless snake hunters—their prey can include venomous vipers and other snakes. Living in a relatively desolate habitat, sand cats are opportunistic feeders out of necessity.
Fifty years ago, bed bugs were nearly eliminated in the United States by using of pesticides like DDT. Today bed bugs are back in beds and theaters. DDT is no longer used due to environmental issues. Pyrethrums are currently the top choice for bed bug infestations. Pyrethrums are especially useful to us because they generally have a stronger effect on bugs than on humans and animals.
Some bed bugs had mutations in their genetic code which allowed them to survive the chemical pesticide and they produced chemically resistant offspring. How can this be explained?
Question 5 options:
bed bugs chose other bugs to partner with who had the mutation
mutations involved in the genetic variation of the bugs were chosen by them
bed bugs chose other bugs to partner with who had no mutations
mutations involved in the genetic variation of the bugs are random
d
Explanation:
i looked up and it said mutation random
What step occurs in the cristae?
The crista of mitochondria, formed by invaginations of the inner mitochondrial membrane, is where oxidative phosphorylation occurs.
What is mitochondria?Mitochondria are cell organelles that generate the maximum of the chemical energy required to power the cell's biochemical reactions (mitochondrion, singular).
The mitochondrial energy is stored in a small molecule known as adenosine triphosphate (ATP).
The crista of mitochondria, formed by invaginations of the inner mitochondrial membrane, is where oxidative phosphorylation occurs.
Thus, the process name is oxidative phosphorylation.
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The skeleton muscle systems guided notes answer key
The Endoplasmic Reticulum ( ER ) was represented by string cheese in the Cell Pizza Lab video . What is the function of the small tubes in the ER ? Help
What type of duck only has 2 legs DONT LOOK IT UP
Answer:
dont all ducks have 2 legs?
Tell me one thing you know about replication.
Answer:
DNA replication is the process by which a double-stranded DNA molecule is copied to produce two identical DNA molecules. Replication is an essential process because, whenever a cell divides, the two new daughter cells must contain the same genetic information, or DNA, as the parent cell.
Thats one thing ;)
Which is one factor that describes a Mediterranean climate?
has many trees
is found in inland areas
has cool and rainy winters
has little to no precipitation
Answer:
C
Explanation:
<3
Mediterranean climate has cool and rainy winters. Therefore, option C is correct.
What is the Mediterranean climate?Mediterranean climate, a major Köppen climatic type with hot, dry summers and cool, wet winters, is found on the western sides of the continents between 30° and 45° latitude north and south of the equator. Seasonal changes occur because of changes in ocean currents.
Strong wind systems, severe precipitation, Mediterranean cyclones, and a significant seasonal difference in temperature and rainfall are some of the distinctive regional characteristics of the Mediterranean climate. This climate has only two seasons and that is summer and winter. Winters are shorter than summer.
Thus, the Mediterranean climate has cool and rainy winters. Therefore, option C is correct.
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Which of the following sequences
(on one strand of a double stranded
DNA molecule) is likely to be a
cleavage site for a restriction
enzyme? Explain your answer.
a. CGTACC
b. ATGTCG
c. GATATG
d. TGCGCA
Answer:
✧･ﾟ: *✧･ﾟ:* *:･ﾟ✧*:･ﾟ✧
Hello!
✧･ﾟ: *✧･ﾟ:* *:･ﾟ✧*:･ﾟ✧
❖ The correct answer is D) two double-stranded DNA molecules, each composed of one and one old strand. This is known as semi-conservative replication.
~ ʜᴏᴘᴇ ᴛʜɪꜱ ʜᴇʟᴘꜱ!! ♡
~ HAZEL
If you were to choose a career that
studied weather, geography, or
minerals, you would have a focus of
study for which branch of science?
A. Earth Science
B. Physical Science
C. Life Science
D. Animal Science
Answer:
Earth Science
Explanation:
Meteorologists, geologists, and cartographers all study sections of earth.
Which would most likely contribute to better digestion and respiration?
Answer: Energy is released when bonds in the food molecules are broken during digestion.
Explanation: