ATI TEAS 7 science review

ATI TEAS 7 science review Related

Review ATI TEAS 7 science review related questions and content

Why do emerging infectious diseases (EIDs) pose a significant public health threat?

  • A. Because they are well-understood by medical professionals
  • B. Because they are easily treatable with existing antibiotics
  • C. Because they are new, rapidly evolving, and can spread quickly
  • D. Because they primarily affect animals and not humans
Correct Answer: C

Rationale: Emerging infectious diseases (EIDs) are a significant public health threat because they are characterized by being new or newly identified diseases that are rapidly evolving. These diseases can spread quickly within populations due to factors such as globalization, travel, urbanization, and changes in climate. EIDs often present challenges to medical professionals as they may not be well-understood initially, making it difficult to develop effective treatments or preventive measures. While some EIDs can be treatable with existing antibiotics, the rapid evolution of these diseases can lead to the development of drug resistance, further complicating treatment efforts. Additionally, EIDs are not limited to affecting animals; they can also have serious implications for human health and well-being. Therefore, the correct answer is that EIDs pose a threat because they are new, rapidly evolving, and can spread quickly. Choices A, B, and D are incorrect because EIDs are not well-understood initially, may develop drug resistance, and can affect humans significantly, not just animals.

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What tool helps scientists identify and classify organisms based on their shared characteristics?

  • A. Binomial nomenclature
  • B. Cladistics
  • C. Dichotomous key
  • D. Domain-based classification
Correct Answer: C

Rationale: A) Binomial nomenclature is a system used to give each organism a two-part scientific name (genus and species) but does not help in identifying or classifying organisms based on shared characteristics. B) Cladistics is a method of classification based on evolutionary relationships and shared characteristics, but it is not a tool used for identifying organisms. C) A dichotomous key is a tool that helps scientists identify and classify organisms based on their shared characteristics by presenting a series of choices leading the user to the correct identification. D) Domain-based classification is a system of grouping organisms into three domains (Bacteria, Archaea, Eukarya) based on molecular and genetic similarities, but it is not a tool used for identifying organisms based on shared characteristics.

What is the primary function of the large intestine?

  • A. Digesting and absorbing nutrients
  • B. Storing and mixing food
  • C. Breaking down carbohydrates
  • D. Absorbing water and electrolytes
Correct Answer: D

Rationale: The primary function of the large intestine is to absorb water and electrolytes from the indigestible food matter that passes through it. This absorption process aids in the formation of solid waste (feces) before it is excreted from the body. Choices A, B, and C are incorrect because the large intestine does not primarily digest and absorb nutrients, store and mix food, or break down carbohydrates. These functions are primarily carried out by the small intestine.

Which hormone is responsible for the characteristic changes experienced during puberty, such as breast development and menstruation in females?

  • A. Follicle-stimulating hormone (FSH)
  • B. Luteinizing hormone (LH)
  • C. Estrogen
  • D. Progesterone
Correct Answer: C

Rationale: Estrogen is the hormone responsible for the characteristic changes experienced during puberty in females, such as breast development and menstruation. Estrogen plays a crucial role in the development of secondary sexual characteristics and the regulation of the menstrual cycle. Follicle-stimulating hormone (FSH) and luteinizing hormone (LH) are primarily involved in the regulation of the menstrual cycle and ovulation. Progesterone, on the other hand, is important for preparing the uterus for pregnancy and maintaining pregnancy, but it is not the primary hormone responsible for the changes seen during puberty in females.

What is the scientific term for the monthly cycle in females that prepares the body for potential pregnancy?

  • A. Ovulation cycle
  • B. Menstrual cycle
  • C. Implantation cycle
  • D. Gestation cycle
Correct Answer: B

Rationale: The correct answer is B: Menstrual cycle. The menstrual cycle is the scientific term for the monthly cycle in females that prepares the body for potential pregnancy. This cycle involves various phases, including the release of an egg from the ovary (ovulation), thickening of the uterine lining in preparation for a fertilized egg, and shedding of the uterine lining if pregnancy does not occur (menstruation). Choices A, C, and D are incorrect. Option A, Ovulation cycle, only refers to the specific phase of egg release from the ovary. Option C, Implantation cycle, pertains to the process of the fertilized egg attaching to the uterine wall. Option D, Gestation cycle, denotes the period of fetal development during pregnancy, which is distinct from the monthly cycle preparing the body for potential pregnancy.

What is the process of breaking down lipids into fatty acids and glycerol called?

  • A. Lipolysis
  • B. Gluconeogenesis
  • C. Krebs cycle
  • D. Oxidative phosphorylation
Correct Answer: A

Rationale: - Lipolysis is indeed the correct answer. It is the process of breaking down lipids (fats) into fatty acids and glycerol. This process occurs in adipose tissue and is important for releasing stored energy in the form of fatty acids.

- Gluconeogenesis is the process of synthesizing glucose from non-carbohydrate sources like amino acids and glycerol, not breaking down lipids.

- The Krebs cycle (also known as the citric acid cycle) is a series of chemical reactions that occur in the mitochondria to generate energy through the oxidation of acetyl-CoA derived from carbohydrates, fats, and proteins.

- Oxidative phosphorylation is the final stage of cellular respiration where ATP is produced through the transfer of electrons in the electron transport chain. It is not specifically related to the breakdown of lipids into fatty acids and glycerol.

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