Answer the following question given this paragraph: Scientists use the geologic time scale to illustrate the order in which events on Earth have happened. Q: Scientists use what scale to illustrate the order in which events on earth have happened? Choices: - ecological succession - fossil record - cataclysmic time scale - geologic time scale A:
geologic time scale
(Question)
Answer the following question given this paragraph: Some unexpected traits can appear in animal embryos. For example, human embryos have gill slits just like fish! In fish they develop into gills, but in humans they disappear before birth. The presence of the gill slits suggests that a long time ago humans and fish shared a common ancestor. Q: What does the presence of gill slits suggest about humans and fish? Choices: - Shared History - Common Cells - Same evolutionary chain - common ancestor A:
(Answer)
common ancestor
Ques: Answer the following question given this paragraph: Q: Restoring nitrogen to the soil is one reason for what agricultural practice? Choices: - irrigation - plowing - sowing - crop rotation A:
Ans: crop rotation
(Q).
Answer the following question given this paragraph: The nucleus of many cells also contains a non-membrane bound organelle called a nucleolus , shown in Figure below . The nucleolus is mainly involved in the assembly of ribosomes. Ribosomes are organelles made of protein and ribosomal RNA (rRNA), and they build cellular proteins in the cytoplasm. The function of the rRNA is to provide a way of decoding the genetic messages within another type of RNA (called mRNA), into amino acids. After being made in the nucleolus, ribosomes are exported to the cytoplasm, where they direct protein synthesis. Q: What are organelles made of protein and ribosomal rna (rrna)? Choices: - electrons - carbons - chromosomes - ribosomes A:
(A).
ribosomes
Ques:Answer the following question given this paragraph: The Krebs cycle and electron transport occur in the mitochondria. The Krebs cycle takes place in the matrix, and electron transport takes place on the inner membrane. Q: Where does the krebs cycle take place? Choices: - in the nitrogen - in the ozone - in the beam - in the matrix A:

Ans:in the matrix
Question: Answer the following question given this paragraph: Photosynthesis takes place in the organelle of the plant cell known as the chloroplasts. Chloroplasts are one of the main differences between plant and animal cells. Animal cells do not have chloroplasts, so they cannot photosynthesize. Photosynthesis occurs in two stages. During the first stage, the energy from sunlight is absorbed by the chloroplast. Water is used, and oxygen is produced during this part of the process. During the second stage, carbon dioxide is used, and glucose is produced. Q: What takes place in the organelle known as the chloroplast, which distinguishes animal from plant cells? Choices: - digestion - reproduction - perspiration - photosynthesis A:
Answer:
photosynthesis