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100

Ancient stromatolites understand early life on Earth. Could these rock formations be significant in tracing the origins of life?

  • Yes – Stromatolites contain fossilized bacterial mats, providing clues about early microbial life.
100

Body system that involves in sending urine out of the body.

  • Endocrine and excretory systems
100

Two body systems are most useful in getting nutrients from the food that you eat.

  • Circulatory and digestive systems
100

Organ pumps blood to the rest of the body.

  • Heart
100

The digestive system is to absorbing nutrients as the circulatory system is to______

  • Distributing nutrients
200

It is a technique of creating an organism that is an exact genetic copy of others organism.

  • Cloning
200

It refers to the ability of an organism to maintain a stable internal environment

  • Homeostasis
200

When you touch a hot pot, you quickly withdraw your hand. This reaction occurs almost instantly after sensing the heat. Which characteristic of life does this situation show?

  • Response to stimuli
200

Sperm cells and egg cells are involved in sexual reproduction in animals. The collective term used to refer to both sperm and egg cells.

Gametes

200

In studying various species of plants in a tropical rainforest. They vary in size, shape, and color, all plants share certain fundamental characteristics, such as the ability to photosynthesize. What unifying theme does this observation exemplify

  • Unity and diversity
300

The concept of evolution helps explain the diversity of life. Which of the following best describes how evolution contributes to the survival of species?

  • Organisms that are best suited to their environment survive and reproduce.
300

Growing of yeast from the side of an existing one is what method of asexual reproduction?

  • Budding
300

What is Asexual Reproduction?

  • Asexual reproduction involves only one parent and produces genetically identical offspring.  
300

What could be the foremost disadvantage of this reproductive strategy where the female lays eggs in an external environment?

  • Increased risk of fertilization failure due to environmental factors
300

A zoo has bred a lion and a tiger to produce a liger. What breeding process does this illustrate?   

Hybridization

400

Define what is genetic engineering?

  • The direct manipulation of an organism's DNA to achieve specific traits
400

Potential application of genetic engineering

  • Genetic engineering creates pest-resistant crops, reducing chemical pesticide use.
400

What term describes an organism that has had its DNA modified to exhibit desirable traits, such as pest resistance or faster growth?

  • Genetically Modified Organism (GMO)
400

How many chambers of the heart of a mammal?

  • The heart has four chambers
400

Body systems is responsible for transmitting signals and processing information.

  • Nervous system
500

Is there is a Circulatory system present in primitive animals like sponges and hydra

  • They have no circulatory system.
500

Which body system is most likely affected if kidney failure, affects the body's ability to filter waste and regulate fluid balance?

  • Excretory system
500

Sofia and her classmates are observing animals at the pond. They notice that seagulls and crows both eat fish. Which of these describes the relationship between these two birds?

  • Competition
500

Joey saw tiny insects crawling on the old wooden fence and noticed the wood was damaged. Her dad explained, "Those are termites, and they live on and eat wood, causing it to break down." What relationship do you observe?

  • Parasitism
500

Humans and cats share common features, such as similar genes, similar skeletal structures in their limbs, and early-stage embryos that are very similar. While cats have a functional tail, humans have a vestigial tailbone. In evolutionary terms, what do these similarities exemplify?

  • Homologous structures