Related questions in Biology
All living things are made of _______. A. Only one cell B. Many cells C. One or more cells D. Tissues
3. How are populations, ecosystems, and communities related? (1 point) A. A community consists of an ecosystem and its physical environment, and an ecosystem is made up of many different populations of organisms. B. A population consists of a community of organisms and its physical environment, and a community is made up of many different ecosystems. C. An ecosystem consists of a community of organisms and its physical environment, and a community is made up of many different populations of organisms. D. An ecosystem consists of a population of organisms and its physical environment, and a population is made up of many different communities of organisms.
A species is group of organisms with distinct characteristics that match others in a population true or false
Evolution not only explains how organisms are different, but also explains the similarities of all life forms on earth
The four basic needs of all living things are sunlight, air, water and food.
The pelvis bone functions as an attachment point for legs. So, the pelvis bone found in dolphins is an _______ organ. Information about this organ tells us that _______. 1) A. an analogous B. a homologous C. a vestigial 2) A.dolphins didn’t evolve from organisms with legs B. dolphins evolved from organisms with legs C. dolphins will have legs in the future .
C because vestigial means remnant of something that was once there
B because a pelvic bone is typically found in creatures that walk
Bats, birds, and humans are vertebrates. Birds and bats have wings that help them fly, and humans don’t have wings. But if you looked at the bone structure of all three organisms, you’d notice similarities in the arrangement of their bones. What can you infer from this information? A)Birds, bats, and humans share a common ancestor. B)Birds and bats have evolved from humans. C)Birds, bats, and humans are mammals. D)Humans are more related to birds than to bats. E)Birds are more related to bats than to humans.
The correct answer is A because not all mammals have a similar bone structure, bats and birds have not evolved from us... we evolved from monkeys, humans are actually more related to monkeys rather than bats and birds, and E doesn't really explain anything, but A, 'birds, bats and humans share a common ancestor is correct. It's an accurate answer, it makes sense, and it is true, birds bats and humans do share a common ancestor.
The arms of humans and the flippers of dolphins have a similar bone structure. So, they’re _______ organs. The legs of a kangaroo and the legs of a jumping spider allow both organisms to jump. However, spiders are invertebrates, and kangaroos are vertebrates. This difference makes their legs ______ structures. 1)A. analogous B. homologous C. vestigial 2)A. analogous B. homologous C. vestigial
1) B. homologous
2) A. analogous
The arms of humans and the flippers of dolphins are homologous organs as both are made of the same pentadactyle pattern of bone structure, but their function is different. Arms of humans perform the function of holding things and the flippers of dolphins are used for swimming. The legs of a kangaroo and the legs of a jumping spider are analogous organs because both organs are dissimilar in origin but perform the same function. They use for jumping.
Logging companies own significant amounts of land in the coastal ranges of California and typically hold onto their land for many decades. Their most important harvest is the redwood tree, which thrives, in moist, cool environments. The many small creeks that run through the coastal ranges support aquatic organisms including algae, fish, and invertebrates such as insect larvae and crustaceans. Because logging disturbs the soil, causing sediment to erode into the creeks, environmentalists have pushed for regulations preventing logging within a specified number of feet from all creeks. However, if the logging companies were given a choice, they would prefer to log the trees very close to the creeks. 1. Using the concepts of limiting factors and primary productivity, explain why the logging companies would like to be able to log next to the creeks. 2. Consider the effect that logging next to the creeks could have on the primary productivity within the creek. Explain two abiotic factors that could be changed by the logging and whether each of these changes would be expected to increase or decrease the primary productivity of the creek ecosystem.
Some bacteria living in the ocean floor can turn methane (a gas) into food. How would you classify these bacteria?
An it producers
A variety of different mechanisms in nature help create diversity in organism populations. The tundra found in the northernmost parts of the planet is the world’s youngest biome. The tundra is home to a variety of plants and animals. Organisms that can be found in the tundra include shrubs, mosses, caribou, polar bears, and wolves. Which mechanism do the different organism populations found across the tundra exemplify? A.) genetic diversity B.) ecosystem diversity C.) species diversity D.) variation
A researcher is monitoring a colony of single-celled organisms and notes that the colony is releasing carbon dioxide (CO2) and using up oxygen (O2) in the closed clear glass container in which it is being kept. Which of the following can be assumed about these organisms from these observations?
What happens to the other organisms in a food chain when an organism in the middle of the food chain is lost?
8. What is meant by a “natural library” of genetic information in reference to biodiversity? (1 point) A. The biodiversity of plants and animals is interesting to read about. B. All living organisms contain genetic information that humans can research. C.Species provide humans with many useful products to enhance our lives. D.We have much to admire in the many forms of life that surround us. 9. Using environmental resources in a way that does not cause long-term environmental harm is like (1 point) A. spending only as much money as you earn. B.borrowing money that you cannot pay back for a long time. C.printing more money when you need it. D.lending money to people who can’t pay it back.
8. Is B.) and 9. Is A.)
6. The nutrient availability of aquatic ecosystems is the (1 point) A.amount of nitrogen, oxygen, and other elements dissolved in the water. B.number of other organisms present in the water. C.amount of rainfall the water receives. D.number of different animal species living in the water. 7. In a logistic growth curve, exponential growth is the phase in which the population (1 point) A.reaches carrying capacity. B.grows quickly. C.growth begins to slow down. D.growth stops.
6. is A.) 7. Is B.) are the correct answers
Chemosynthesis is : the process of breaking down sugars to get energy the process of making organic food molecules in the absence of light the internal biochemistry used by organisms to make ATP the transfer of chemicals against or opposite the concentration gradient
Which statement best defines a cell? a crystal-like structure that exists in all living things an independent functional unit of life the smallest organelle of all living organisms the basic unit of structure and function in all living things
Answer and explanation;
-The belief that organisms originate from a common ancestor was much of the basis that the theory of natural selection was based on. Evidence of animals sharing the same trait, even though for some it appears to have no benefit to them, appears to have been at the root of this belief.
Charles Darwin was the first scientist to publish a coherent theory of Evolution by Natural selection. He wasn't the first to intuitively suspect that species evolved from a common ancestor, but he was the first to publish a coherent theory and bring forth evidence for it.