Biology Homework Help
The trickiest part of learning biology is how to make students understand the microscopic world of biology, how to go inside cells and explore genes and molecules. However, with the development of information technology, biology homework help can play an important role when neither words nor pictures can fully explain biology points.
QuestionAI is an online biology learning software that helps you learn and master biology knowledge, including a variety of experiments and corresponding exercises, which is fundamentally different from the common biology questions helper. Here, you can simulate experiments to reproduce the experimental scenarios, from shallow to deep, layer by layer, to learn and understand the knowledge points.
of the following represent?the levels of organization in order from simple to complex. organ system orga system, orem b. Cell, tissue, organi-on organ C. Cell, tissue organism, an system, organism Body Systems Quiz Part 2. Which body system is responsible for controlling and transmitting signals between the Which bod the body? (LT 1) C Nervous a Muscular d. Cardiovascular b. Respiratory 3. Which body system is responsible for controlling movement in the human body?(I C Nervous a. Muscular d. Cardiovascular b.Skeletal 4. Which body system is responsible for providing support and structure for our (LT1) a. Muscular C.Nervous b. Skeletal d. Cardiovascular 5. Which body system is responsible for delivering oxygen nutrients, horr other important substances to cells and organs in the body?(LT 2) a. Muscular C. Nervous b. Respiratory d. Cardiovascular
Which goat breed is known for having a very rounded forehead and a Roman nose? Alpine Kinder Nubian Angora
STATE TWO properties of water-pick the two that make the most sense to you EXPLAIN WHY EACH ONE is important for living organisms. 0/10000 Word Lim square
Correct any words that are spelled incorrectly. If no corrections are needed submit the text without making any changes. A DNA test performed on Chris Darwin-a relative of the famous naturalist Charles Darwin-showed that Charles was apparantly a descendant of the Cro-Magnon people who moved to Europe thirty thousand years ago.
__ 36. A lizard sunning itself on a rock is an example of: C. Metabolism D. Homeostasis A. Carbohydrates B. pH
What type of Fe edba ck int ensifi es the varia ble an d pushe s the body to m ake m ore? Posit ive Fe edba ck Negat ive Feedb ack
Ch. 6: Reproduction at the Cellular Level 2. Describe the difference between sister chromatids and homologous chromosomes. 2. Describe the differences between haploid and diploid cells. 3. Compare the types of cell division in prokaryotic and eukaryotic cells. 4. Describe the key events that occur during each phase of the cell cycle and mitosis. Ch. 7: Cellular Basis of Inheritance 1. Describe the differences between gametes and somatic cells. 2. Describe the key events that occur during each phase of meiosis I and meiosis II. 3. Describe how independent assortment of chromosome s and crossing over contribute to genetic diversity in during meiosis. 4. Compare the overall similarities and differences between meiosis and mitosis.
11. Osteoblasts and osteoclasts only function until puberty is reached. True False
Complete the statements. Proto-oncogenes normally square cell division. Oncogenes are mutated proto -oncogenes that square cell division. Oncogenes can square cancer. Tumor-suppressor genes normally square cell division. Mutated forms of these genes that square cell division can square cancer.
Regulation of enzyme activity occurs at the start of translation. at the start of transcription. at any point on the enzymatic production pathway. posttranslationally.
Hot Questions
Questlon 9 of 10 Guppies are small fish that live in freshwater streams. There are many different variants of guppies. Colorful male variants are more likely to attract both females and predators. Dull variants are less likely to attract females and predators. Which two statements describe how a population of gupples is likely to change if a new predator is added to the stream? A. The dull variant will decline because they are less likely to survive long enough to reproduce. B. The colorful variant will increase because they are more likely to survive long enough to reproduce. C. The colorful variant will decline because they are less likely to survive long enough to reproduce. D. The dull varlant will increase because they are more able to survive long enough to reproduce.
McGraw tal Part 5 ot 5 2.5 In animal cells, cell division is accomplished points In animal cells, cell division is accomplished by the formation of a cleavage furrow. ebook Aint References ebook Aint References True or False True False
How many breeds of pigs are there in the world, not counting wild pigs? A. about 4,000 B. around 500 C. less than 20 D. exactly 60
Question 11 (1 point) Elastic or Inelastic: Insulin for a person with diabetes. a elastic b inelastic
What is the name for the minimum strength of stimulus necessary to generate a muscle contraction? Threshold stimulus Minimal stimulus Tetanic stimulus
Which types of fertilizers have high amounts of nutrients? a. Organic b. Inorganic c. Nutrient Free d. None of the above
Which three things can cause DNA mutations? A. Repeated exposure to X -rays B. Exposure to certain pesticides and volatile compounds C. Chromosome assortment during meiosis D. Replication errors that are not repaired
Choose the best answer. What role do lichens and moss play in primary succession? They absorb organic matter and soil when they die. They add organic matter and build up soil when they die. They help break down rocks to form soil. They help break down soil to form rocks.
Species of bacteria can evolve more quickly than species of mammals because bacteria have A) lower mutation rates B) less competition C) higher rates of reproduction D) more chromosomes If the same antibiotic is used too many times, it can become less effective against a certain type of bacteria. This observation is best explained by the A) survival and reproduction of unaffected bacteria B) replication of viruses that attack bacteria C) presence of pathogens in antibiotics D) production of antibiotics by white blood cells Gene mutations can be caused by many things. These mutations are biologically important because they A) can result in a new variety of gene combinations in the species B) can be passed to the offspring if they occur in any cell of the body C) occur at a regular rate and therefore can be controlled D) are always harmful and therefore help to eliminate weak traits A change in genetic material that produces a variation in a species may be a result of A) a struggle for survival B) overproduction of a species C) competition D) a mutation When antibiotics were first developed, most infectious diseases could be controlled by them. Today, certain bacteria are resistant to many antibiotics. One possible explanation for this change is that A) the bacteria needed to change in order to produce more antibiotics B) some of the bacteria learned how to resist the antibiotics C) antibiotics have become weaker over the years D) the antibiotics killed most of the bacteria that did not have a genetic variation for resistance
Vhat organelle is called the "powerhouse" of a cell?
Question 6(Multiple Choice Worth 2 points) (05.02A MC) Estimates of current rates of extinction suggest that rates of extinction have globally decreased, but have locally increased suggest that one-half of all animal and plant species may be gone by the year 2100 indicate that rates may be greater than the background extinction rates seen in the fossil records indicate that rates of speciation equal extinction, so an equilibrium has been reached
What is cytokinesis, and when does it occur?
uestion 18 (1 point) During the first step of converting ATP to energy, which enzyme the bond between the second and third phosphates?
Which of the following best describes an ecosystem on a prairie in Nebraska? the red foxes the sand dunes, the prairie sandreed, and the greater prairie chickens the seeds, the leaves, and the insects
The process by which Isogamous organisms exchange genetic Information during fertilization is called meiosis conjugation fragmentation oogamous
Capillary puncture is done at the heel when (4 Points) kids are under 12 months old under 2 years old not walking A and C
Which below is the "third step" in the formation of a new species? a predation b gene mutation c isolation d adaptation Question 2 (1 point) Which below is the "second step" in the formation of a new species? a predation b isolation c gene mutation d adaptation Question 3 (1 point) Which below is the "fourth step" in the formation of a new species? a gene mutation b can no longer interbreed c isolation d adaptation
Question 1 0.7pt In the zone of , the cartilage matrix begin to calcify and chondrocytes die. proliferation reserve ossification calcification maturation and hypertrophy
Question 7 (1 point) What would happen if there were no predators in the forest? Would the colors of the meths change over time? Yes, different colored moths would compete and only one color would win. No, with no predators, there is no selection pressure against a particular color, so the percentages of dark and light moths would stay the same.
is the process by which plants lose water? Germination Respiration Photosynthesis Transpiration
IMAGES
VIDEO