Biology

The genetically programmed death of cells is called:
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A rise in __________ released from the sarcoplasmic reticulum allows actin to bind to myosin and cause a contraction, which requires __________ energy.
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The last woman scientist discovered one gene that is unique in human, and she called it an Eureka moment. How many letters are different in that gene if you compare the chimp version with the human version
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4. how many axes of symmetry exist in this figure?
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how is the dna in a prokaryotic different from a eukaryote?
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Skin is an epithelial tissue.give reason.
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What is the correct sequence in the transmission of a neural impulse?
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PLEASE HELP!! MULTIPLE CHOICE
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Human cells have 46 chromosomes. Each chromosome consists of a pair of identical chromatids attached together by a structure called a centromere. Once the chromosome has split, each chromatid is called a daughter chromosome. At the end of cytokinesis, how many daughter chromosomes will be found in each cell? Explain.
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Do you think the vacuum hose is an effective way to remove sea urchins? Why? Explain at least one way this technology can be improved.
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I need some help pls1what is the function of an enzyme2 how are proteins made
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Energy flow through anecosystem isA. completely randomB. a one-way pathwayC. always towards the SunD. a dual-directional pathway
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How does the environment influence the traits of an individual?
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in the family the father is affected by a genetic disorder the son in the family has the same disease but the daughters do not have it. what type of inheritance is this ?
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NEED HELP ASAP PLZWrite T or True if the statement is true; write For False if the statement is false.1. The greenhouse effect is a natural process that supports life on the earth for millionsyears.2. The majority of the Earth's atmosphere is composed of nitrogen and oxygen,greenhouse gases comprise only a tiny fraction of the atmosphere.3. All greenhouse gases are created as a result of human activity.
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5. a. What technology produced the results illustrated here, and what is thistechnology used for? (1 point)Think about the methods used to analyze DNA.
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__________ is needed in the body to make vitamin D, bile acids, and cortisol. Group of answer choices Phospholipid Cholesterol Lipase Triglyceride
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8. Fish make use of _______ exchange in their gills. a. cross-current b. concurrent c. cocurrent d. countercurrent
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e. How would the sky look if we could see microwaves in space?
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Which statement is true of evergreen coniferous trees?
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1 Both viruses and cells have - A Lysosomes B Mitochondria C Chloroplasts D Proteins
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Look at the table for energy used in activities. Ella does 2 hours of dancing a week, plays football for 1 hour a week, and goes swimming for 0.5 hours a week. She has a mass of 55kg. How much extra energy will she need a week in order to do these activities?
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renewable energy makes up approximately how much of the total u.s. energy budget?
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what objects could we find in the troposphere
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