Mind the Gap Study Guide - Life Sciences Grade 12

This set of flashcards covers key concepts from the Mind the Gap Life Sciences Grade 12 study guide.

What is the main purpose of the Mind the Gap study guide for Grade 12 Life Sciences?

To assist learners in preparing for exams and improving their understanding of core concepts.

What is meiosis?

A type of cell division that produces four genetically diverse haploid cells from a diploid cell.

What are the two main types of cells involved in meiosis?

Gametes, which are sperm and egg cells.

What is the significance of crossing over during meiosis?

It introduces genetic variation in the offspring.

What is the function of auxins in plant growth?

Auxins promote cell elongation and are involved in plant responses to light (phototropism) and gravity (geotropism).

Define homeostasis.

The process by which organisms maintain a stable internal environment.

What are the results of an increase in carbon dioxide levels in the atmosphere?

It leads to the greenhouse effect, which contributes to global warming.

What is the role of insulin in the human body?

Insulin regulates blood glucose levels by facilitating the uptake of glucose into cells.

Name a key disadvantage of monoculture in agriculture.

It reduces biodiversity and makes crops more susceptible to pests and diseases.

What is the role of the placenta in human reproduction?

The placenta provides nutrients and oxygen to the fetus while removing waste products.