Archive day

December 15, 2025

1,952 public questions were asked on this day.

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Which of the following is lacking in invertebrates?(1 point) Responses muscular system muscular system digestive system digestive system eyes eyes a spinal column a spinal column
Asked by Mathew Jameson 1 answer
Why is it difficult to create a vaccine against a common cold?(1 point) Responses It is impossible to create a vaccine against illnesses caused by proviruses. It is impossible to create a vaccine against illnesses caused...
Asked by Mathew Jameson 1 answer
A virus is made of a coat, called a capsid, and its genetic material. What material is the capsid made of?(1 point) Responses cell membrane cell membrane protein protein RNA RNA DNA DNA Skip to navigation
Asked by Mathew Jameson 1 answer
How is energy stored in ATP?(1 point) Responses ADP loses its extra energy to ATP with the help of glucose. ADP loses its extra energy to ATP with the help of glucose. ADP is given a third phosphate group, which stores e...
Asked by Mathew Jameson 1 answer
Which category of macromolecules provides the energy used directly in cells? (1 point) Responses proteins proteins nucleic acids nucleic acids carbohydrates carbohydrates lipids
Asked by Mathew Jameson 1 answer
Most structures in a cell are membrane-bound, but some are not. Which structure lacking a membrane is present in plant cells and not in animal cells?(1 point) Responses chloroplast chloroplast cell wall cell wall cytopla...
Asked by Mathew Jameson 1 answer
What is the similarity between a prokaryotic and a eukaryotic cell?(1 point) Responses Both prokaryotic and eukaryotic cells have a nucleus and cell organelles. Both prokaryotic and eukaryotic cells have a nucleus and ce...
Asked by Mathew Jameson 1 answer
What is a distinguishing feature between smooth endoplasmic reticulum and rough endoplasmic reticulum?(1 point) Responses Rough endoplasmic reticulum has vacuoles attached to its surface. Rough endoplasmic reticulum has...
Asked by Mathew Jameson 1 answer
What is the movement of water, containing no solute, across semi-permeable cellular membranes through proteins called aquaporins known?(1 point) Responses endocytosis endocytosis osmosis osmosis simple diffusion simple d...
Asked by Mathew Jameson 1 answer
Question Which of the following is related to water’s high specific heat capacity?(1 point) Responses It allows water to heat and cool more quickly than the surrounding land. It allows water to heat and cool more quickly...
Asked by Mathew Jameson 1 answer
What are condensation and evaporation components of?(1 point) Responses the carbon cycle the carbon cycle the water cycle the water cycle photosynthesis photosynthesis transpiration transpiration Skip to navigation
Asked by Mathew Jameson 1 answer
You find a blog post written by a student on a university website about photosynthesis. It cites multiple peer-reviewed journals, and has several comments from other students who agree with the findings. Which is a reaso...
Asked by Mathew Jameson 1 answer
How is “lock and key” used to describe the action of enzymes? (1 point) Responses Enzymes are able to create gaps in cell walls that allow products to leave cells. Enzymes are able to create gaps in cell walls that allow...
Asked by Mathew Jameson 1 answer
What are the building blocks that make up proteins?(1 point) Responses lipids lipids starches starches nucleic acids nucleic acids amino acids amino acids
Asked by Mathew Jameson 1 answer
How do plants and animals rearrange atoms in chemical reactions to support their functions?(1 point) Responses Plants and animals both take in carbon dioxide and release oxygen during cellular respiration. Plants and ani...
Asked by Mathew Jameson 1 answer
Nucleic acids are biomolecules that are made up of nucleotides. Nucleotides contain sugar, a phosphate group, and a nitrogen base. DNA is an example of a nucleic acid. Which of the following is a nitrogen base?(1 point)...
Asked by Mathew Jameson 1 answer
Which option best describes a scientific consensus?(1 point) Responses an observation made by a scientist that is supported by evidence and reasoning an observation made by a scientist that is supported by evidence and r...
Asked by Mathew Jameson 1 answer
Why are inferences a vital part of the scientific process?(1 point) Responses They are the facts and patterns that are studied. They are the facts and patterns that are studied. They are conclusions based on facts. They...
Asked by Mathew Jameson 1 answer
Divide 3.3×104 3.3 × 10 4 by 5.5×107 5.5 × 10 7 .(1 point) Responses 6×10−3 6 × 10 − 3 6 times 10 to the negative 3 power 6×10−4 6 × 10 − 4 6 times 10 to the negative 4 power 6×10−6 6 × 10 − 6 6 times 10 to the negative...
Asked by HYUJ 1 answer
What is 5.5×104 5.5 × 10 4 multiplied by 2.2×10−8 2.2 × 10 − 8 ? Write the answer in scientific notation.(1 point) Responses 12.1×10−4 12.1 × 10 − 4 12.1 times 10 superscript negative 4 baseline 1.21×10−5 1.21 × 10 − 5 1...
Asked by HYUJ 1 answer
In 1–2 sentences, answer the following prompt: What is an extraneous solution of a rational equation?
Asked by asdfgh 1 answer
Factor the denominator on the right side of the equation $$\frac{b}{b-5} - \frac{2}{b+5} = \frac{50}{(b-5)(b+5)}$$ Multiply both sides of the equation by the least common denominator (LCD), which is $$(b-5)(b+5)$$ $$(b-5...
Asked by asdfgh 1 answer
An insect population after x months can be modeled by the graph at left. Complete the table below and write the exponential function that describes this scenario. months, x: 0, 1, 2, 3 Population, y: 12, 18, 27, 41
Asked by nk 1 answer
Set the denominator to zero and solve for those values since any number that makes the denominator of a rational expression equal zero renders it undefined. Remember that even if a factor cancels when the expression is s...
Asked by asdfgh 1 answer
In 1–2 sentences, discuss how to determine the values that make a rational expression undefined
Asked by asdfgh 1 answer