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Cells are the specialized building blocks of your body.
Solid exists if particles do not have enough kinetic energy to overcome the force of attraction between them.
An octahedron is the shape formed by gluing together equilateral triangles four to a vertex. The eight sides of an octahedra are in the shape of a triangles.
What type of transport occurs when substances cross the plasma membrane without any input of energy from the cell?
Animals can not produce their own food making them heterotrophs
While spermatogenesis produces four haploid sperm cells, oogenesis produces one mature ovum.
What is the term for when the water of the ocean slowly rises and falls?
The longer a population group has existed, the more diverse will be their DNA because more mutations will have occurred. Mutations are changes to an organism鈥檚 dna and are an important driver of diversity in populations.
Vertebrates reproduce sexually.
Roundworms exemplify organ-level organization, where two or more types of tissues work together to perform a particular function as an organ.
The orbital is the area where an electron is most likely to be found.
Breast cancer is the most common type of cancer in adult females.
The sum of the kinetic and potential energies of a system鈥檚 atoms and molecules is called what?
Iceland sits on the mid-atlantic ridge.
Melanocytes are the melanin -producing cells and they are scattered along the bottom of the epidermis. Melanocytes are located in the bottom layer of the epidermis.
Scissors are compound machines.
During the early paleozoic, the amount of carbon dioxide in the atmosphere was much greater compared to today.
There are fewer than 24 hours of daylight in alaska during each day in april because earth鈥檚 rotation causes both day and night.
The third trimester is a time of rapid growth. The third trimester is associated with rapid fetal growth.
In what type of climate might one find deciduous trees?
Carbon 14 isotope of carbon is typically used to date ancient items.
People stopped adding lead to gasoline because of environmental pollution.
One large eggs are generated during oogenesis.
In natural selection the conditions of the environment make individuals possessing a particular trait better able to survive to produce descendants which inherit that trait . Natural selection is the process that allows organisms with better traits to survive and produce.
Atoms consist of a central nucleus, containing protons and neutrons, and an outer cloud of orbiting electrons. Protons and neutrons are located in the central nucleus.
Hemoglobin is a carrier molecule that becomes less effective at binding oxygen as temperature increases.
Distance is defined as the magnitude or size of displacement between two positions.
A pumpkin is a fruit.
What type of feedback intensifies a change in the body鈥檚 physiological condition rather than reversing it?
A weed is any plant growing where it isn't wanted, but usually these are the plants that emerge naturally following soil disturbance. Plants that grow where you don't want them are called weeds.
What is first year after birth is called?
There are two different main types of diabetes.
Element Atomic number - number of protons in nucleus, unique characteristic of each element Atomic mass- number of protons and neutrons in nucleus III. The mass of atoms is based on the number of protons and neutrons in nucleus.
Ectotherms undergo a variety of changes at the cellular level to acclimatize to shifts in temperature.
Formic acid is another bi-product of methanol which is the poison found in the sting of fire ants. Formic acid is found in the secretions of stinging ants.
Which proteins recognize and combine with harmful materials, including both toxic chemicals and invasive microorganisms?
Organisms are individual living things. Individual is the term for an organism, or single living thing.
What do we call the only light that people can see?
Which organelle is often compared to a post office, moving proteins and lipids to where they need to go?
Which food is a fruit?
By definition, the molar heat of reaction is the heat given off or absorbed by the reaction expressed in units of kilojoules per mole of one of the reagents in the reaction. Kilojoules are typically used to measure heats of reaction.
What sac, which was sitting on top of the flat embryo, envelops the embryo as it folds?
Producing light without a high temperature is called?
Continually increasing the pressure on the liquid will eventually cause the substance to solidify.
Which action forms a different chemical substance?
Adulthood is divided into how many stages?
What is the most common type of cancer developed in children?
Microevolution, or change beneath the species level, may be thought of as relatively small scale changes in the functional and genetic constituencies of populations of organisms correlated either with genetic drift or with adaptation in response to environmental fluctuations. Microevolution is the process by which organisms change in small ways over time.
opaque Describes the property of a material that does not allow visible light to pass through. Opaque is the term for matter that does not let any light pass through.
Supernovas are the source of elements heavier than iron.
The surface of Earth is covered by a relatively thin layer of water called the
Elements are pure substances that make up what?
A liquid becomes a gas if its temperature is increased. A liquid becomes a solid if its temperature decreases. One way to change water from a liquid to a solid is to decrease the temperature.
The process of cytokinesis , where the cytoplasm is divided by cleavage, also starts sometime in late anaphase and continues through telophase. The cytoplasm is divided during cytokinesis.
Since carbohydrate has four calories per gram, that works out to 2,000 to as much as 3,200 calories per day from that one source alone. One gram of carbohydrates provides four calories of energy.
Through what method or methods of fertilization do amphibians sexually reproduce?
A(n) cell is the lowest level of organism that can perform all activities required for life.
Amphibians sexually reproduce through external or internal fertilization.
Nitrogen gas comprises about three-fourths of earth's atmosphere.
If a sedimentary rock layer is not horizontal, it is deformed.
Tornadoes can happen at any hour of the day and any time of the year, though they are most common in the spring, especially during May and June in North America. Tornadoes can occur in any.
Which primate group generally lives alone?
Upgrading the sight by adding an infra-red pulsing laser and infrared illuminator, the sight can be used in conjunction with night vision goggles to illuminate targets under the darkest conditions. You can use night goggles to see infrared light.
The complement system is a series of proteins constitutively found in the what?
The nitrogenous bases spell out specific amino acids with three-letter words, the genetic code. The genetic code works in series of three-letter codes.
Hydrogen is in gas form at room temperature.
The sun mostly made up of the element hydrogen.
Birds have four limbs.
Iguassu falls is the largest waterfall on the planet.
Adulthood is divided into how many stages?
Placental mammals give birth to relatively large fetuses.
What physical property of matter reflects how closely packed the particles of matter are?
Like mitochondria, plastids contain their own what?
When performing anaerobic exercise, your muscles work against what?
Weight pulls the object downward because of the gravity. Weight is the measure of the force of gravity pulling down on an object.
Mammals have four limbs and produce what kind of eggs?
X1014016807-00072-15066</DOCNO> Aortic Stenosis AORTIC STENOSIS The aorta is the major artery which carries &quot;red blood&quot;, high in oxygen, from the left side of the heart to the rest of the body. We call the major artery carrying recently oxygenated blood away from the heart the aorta.
Where do biochemical reactions take place?
The formula for carbon dioxide is CO 2 . Co 2 is the molecular formula of carbon dioxide.
What system consists of structures that produce eggs, secrete female sex hormones, and ultimately enable birth of a fetus?
What term is used to describe molecules that contain carbon-nitrogen bonds?
Sexual reproduction is when two haploid gametes, one from each parent, fuse to form a zygote, which develops into an offspring genetically different from the parents. Sexual reproduction involves combining genetic material from two parents to create distinct offspring.
Trichomoniasis is cause by what type of pathogen?
You can play a role in conserving water by becoming conscious of the amount of water your household is using, and by looking for ways to preserve whenever you can. The best way humans can conserve water is to use less.
Competition may occur between two different species (interspecific competition) or competition may occur among members of the same species (intraspecific competition). The two basic types of competition are called instraspecifc and interspecific competition.
Community interactions are important factors in what?
life on Earth is carbon-based Carbon is the basis of all life on earth.
The spines of a cactus help it survive because spines protect the cactus from animals.
How do fungus-like protists such as slime molds reproduce?
What do you call the lightless part of the ocean?
What planet has the most volcanoes?
What is the blastocyst called after implantation?
This means that it takes 24 hours for the Earth to spin, or rotate, completely around one time. It takes 24 hours for the earth to make a complete rotation of its axis.
Water molds mostly live in water or moist?
Reptiles typically reproduce sexually.
Cambrian is the name of a Period that marks the beginning of the Paleozoic Era, currently estimated at 570 million years ago (if you accept the estimates of geologists and geochemists). The first period of the paleozoic era was called cambrian.
What do you call the lightless part of the ocean?
Today, some 1,200 species of birds are threatened with extinction by human actions. Around 1200 species of birds are currently at risk of extinction due to human activity.
Work is done only if a force is exerted in the direction of what?
The name of film that polyester fibers form is mylar.