Answer the following question given this paragraph: From the collecting ducts of the kidneys, urine enters the ureters , two muscular tubes that move the urine by peristalsis to the bladder (see Figure above ). The bladder is a hollow, sac-like organ that stores urine. When the bladder is about half full, it sends a nerve impulse to a sphincter to relax and let urine flow out of the bladder and into the urethra. The urethra is a muscular tube that carries urine out of the body. Urine leaves the body through another sphincter in the process of urination . This sphincter and the process of urination are normally under conscious control. Q: What is the name of the muscular tube that carries urine out of the body? Choices: - rectum - uterus - bladder - urethra A:
urethra
Answer the following question given this paragraph: Q: What is it called when liquid water falls from the sky? Choices: - sedimentation - water cycling - erosion - precipitation A:
precipitation
Q: Answer the following question given this paragraph: Hydrocarbons are molecules that contain only carbon and hydrogen atoms. Because each carbon atom can form covalent bonds with up to four other atoms, very large and complex molecules can be formed just from these two elements. Hydrocarbons in which all carbons are connected by single bonds are known as alkanes . If a C=C double bond is present, the compound is now an alkene . A triple bond between two carbons (CC) makes the compound an alkyne . Hydrocarbons can also be broadly classified as either saturated , which means they contain no multiple bonds, or unsaturated , which means they contain at least one double or triple bond. Q: Hydrocarbons in which all carbons are connected by single bonds are called? Choices: - acids - enzymes - lipids - alkanes A:
A: alkanes
Question: Answer the following question given this paragraph: Invertebrates are animals that lack a vertebral column, or backbone. All the phyla in Table above , except the Phylum Chordata, consist only of invertebrates. Even the Phylum Chordata includes some invertebrate taxa. Invertebrates make up about 95 percent of all animal species. Q: Invertebrates make up what percentage of all animal species? Choices: - 90 percent - 50 percent - 30 percent - 95 percent A:
Answer: 95 percent
*Question*
Answer the following question given this paragraph: Solar energy is used to heat homes and water, and to make electricity. Scientists and engineers have many ways to get energy from the Sun ( Figure below ). One is by using solar cells. Solar cells are devices that turn sunlight directly into electricity. Lots of solar cells make up an individual solar panel. You may have seen solar panels on roof tops. The Sun's heat can also be trapped in your home by using south facing windows and good insulation. Q: Solar cells turn sunlight directly into what? Choices: - gas - water - cold - electricity A:
**Answer**
electricity
(Q).
Answer the following question given this paragraph: The nucleus is a membrane-enclosed organelle found in most eukaryotic cells. The nucleus is the largest organelle in the cell and contains most of the cell's genetic information (mitochondria also contain DNA, called mitochondrial DNA, but it makes up just a small percentage of the cell's overall DNA content). The genetic information, which contains the information for the structure and function of the organism, is found encoded in DNA in the form of genes. A gene is a short segment of DNA that contains information to encode an RNA molecule or a protein strand. DNA in the nucleus is organized in long linear strands that are attached to different proteins. These proteins help the DNA to coil up for better storage in the nucleus. Think how a string gets tightly coiled up if you twist one end while holding the other end. These long strands of coiled-up DNA and proteins are called chromosomes. Each chromosome contains many genes. Humans have about 20,000 to 22,000 genes scattered among 23 chromosomes. Q: Humans have about 20,000 to 22,000 genes scattered among 23 of these? Choices: - neutrons - ribosomes - atoms - chromosomes A:
(A).
chromosomes